JP2010116632A - Apparatus and method for producing fine carbon fiber twisted yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for stably and continuously producing a fine carbon fiber twisted yarn having strength suitable for handling. <P>SOLUTION: The apparatus 1 for producing a fine carbon fiber twisted yarn is an apparatus for continuously producing a fine carbon fiber twisted yarn from a fine carbon fiber assembly of a chemical vapor growth on a substrate Z and includes a pulling out means 3 for pulling out a fine carbon fiber from the substrate and forming a fine carbon fiber sheet body, a spray means 5 for spraying an atomized liquid to a fine carbon fiber sheet body pulled out by the pulling out means 3 to form a fine carbon fiber aggregate and a twisting means 4 for twisting a fine carbon fiber aggregate formed by spraying the atomized liquid to form a twisted yarn. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus and a method for continuously producing fine carbon fiber twisted yarn by spinning fine carbon fibers such as single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes obtained by chemical vapor deposition.

  Fine carbon fibers are excellent in electrical characteristics, mechanical characteristics, and the like, and are expected to be used and applied in various industries such as field emission displays and conductive fillers.

  In recent years, fine carbon fibers made of carbon nanotubes and carbon nanotube sheets using the same have been proposed (Non-Patent Documents 1 and 2).

  Non-Patent Document 1 discloses a method of forming fine carbon fiber twisted yarns from an aggregate of fine carbon fibers grown in a high density and high orientation on a substrate by chemical vapor deposition.

  Non-Patent Document 2 proposes a method of forming a fine carbon fiber sheet from an aggregate of fine carbon fibers grown at a high density and high orientation on a substrate by chemical vapor deposition.

  The above-mentioned fine carbon fiber twisted yarn and sheet are expected to be used for new applications because of their non-existing forms, and are expected to be applied to various industries.

In industrial applications, it is essential that the fine carbon fiber twisted yarns and sheets as described above are continuously and uniformly produced and wound. In Non-Patent Document 1, a spindle (weight) made by a toothpick is attached to the tip of a rotating shaft of a motor, and a tip of the spindle is rotated while the spindle is rotated in a state where a plurality of fine carbon fibers are connected to the tip of the spindle. Makes a fine carbon fiber twisted yarn by separating from the aggregate substrate of fine carbon fibers.
Zhang et al., Science, 306, 1358-1361, 2004 Zhang et al., Science, 309, 1215-1219, 2005

  However, when the fine carbon fiber twisted yarn is manufactured using the method taught by the above-mentioned Non-Patent Document 1 or Non-Patent Document 2, the fine carbon fiber fiber drawn from the fine carbon fiber substrate is cut or the fine There was a problem that the strength of the carbon fiber twisted yarn was not sufficient. Moreover, since the yarn diameter was not controlled, the yarn was non-uniform, and the winding process was not taken into consideration, it was impossible to continuously produce a homogeneous fine carbon fiber twisted yarn.

  This invention is made | formed in view of the said situation, and it aims at providing the manufacturing apparatus and manufacturing method which can manufacture continuously the fine carbon fiber twisted yarn which has the intensity | strength suitable for handling stably.

  The above object of the present invention is an apparatus for continuously producing a fine carbon fiber twisted yarn from an aggregate of fine carbon fibers chemically vapor-deposited on a substrate, wherein the fine carbon fibers are drawn from the substrate to obtain fine carbon fibers. A drawing means capable of forming a fiber sheet body; a spraying means capable of forming a fine carbon fiber aggregate by spraying a mist-like liquid on the fine carbon fiber sheet body drawn by the drawing means; and a mist-like liquid. This is achieved by a fine carbon fiber twisted yarn manufacturing apparatus comprising twisting means for twisting the fine carbon fiber aggregate formed in this way to form a twisted yarn.

  Moreover, in this fine carbon fiber twisted-yarn manufacturing apparatus, it is preferable that the said mist liquid is an easily volatile liquid.

  The fine carbon fiber is preferably a carbon nanotube.

  Further, it further comprises a clamping means for clamping the fine carbon fiber sheet drawn out from the substrate, the clamping means is disposed between the substrate and the twisting means, and the spreading means, It is preferable that it is disposed between the substrate and the clamping means.

  The twisting means has a rotation axis along the drawing direction of the fine carbon fiber sheet drawn from the substrate, and rotates the fine carbon fiber sheet drawn from the substrate around the rotation axis. It is preferable that a rotating body for forming a twisted yarn is provided, and the drawing means is integrally attached to the rotating body.

  Another object of the present invention is a method of continuously producing a fine carbon fiber twisted yarn from an assembly of fine carbon fibers chemically vapor-grown on a substrate, wherein the fine carbon fibers are drawn from the substrate. A drawing step capable of forming a fine carbon fiber sheet body, a spraying step of spraying a mist liquid on the fine carbon fiber sheet body drawn by the drawing step to form a fine carbon fiber aggregate, and spraying the mist liquid This is achieved by a method for producing fine carbon fiber twisted yarn comprising a twisting step of twisting the fine carbon fiber aggregate formed in this manner to form a twisted yarn.

  The above-mentioned object of the present invention is a method for producing twisted yarns of fine carbon fibers from an aggregate of fine carbon fibers grown on the first substrate and the second substrate, respectively, by the first substrate. A first drawing step capable of drawing a fine carbon fiber from the first substrate to form a first fine carbon fiber sheet body, and a second drawing step capable of drawing a fine carbon fiber from the second substrate to form a second fine carbon fiber sheet body. A laminating step in which a laminated sheet body is formed by superimposing the first fine carbon fiber sheet body and the second fine carbon fiber sheet body; and a fine carbon fiber agglomerating lamination by spraying a mist liquid on the laminated sheet body Achieved by a fine carbon fiber twisted yarn manufacturing method comprising: a spreading step for forming a body; and a twisting step for twisting a fine carbon fiber agglomerated laminate formed by spraying a mist liquid to form a twisted yarn. Made.

  Moreover, in this fine carbon fiber twisted-yarn manufacturing method, it is preferable that the said lamination | stacking step is equipped with the cutting step which cut | disconnects any one of a 1st fine carbon fiber sheet body and a 2nd fine carbon fiber sheet body.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus and manufacturing method which can manufacture the fine carbon fiber twisted yarn which has the intensity | strength suitable for handling stably continuously can be provided.

  Hereinafter, a fine carbon fiber twisted yarn manufacturing apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram showing a basic configuration of a fine carbon fiber twisted yarn manufacturing apparatus according to the present invention. A fine carbon fiber twisted yarn production apparatus 1 according to the present invention is an apparatus for continuously producing fine carbon fiber twisted yarn from an aggregate of fine carbon fibers grown on a substrate by chemical vapor deposition, as shown in FIG. The substrate fixing means 2, the drawing means 3, the twisting means 4, the spreading means 5 and the clamping means 6 are provided.

  The substrate fixing means 2 is a fixing base for fixing the substrate Z on which an aggregate of fine carbon fibers grown by chemical vapor deposition is formed. For example, the substrate Z is fixed by sandwiching a part of the substrate Z. ing. The fine carbon fiber formed on the substrate Z fixed to the substrate fixing means 2 is a fiber that is a raw material of the fine carbon fiber twisted yarn, and is obtained by chemical vapor deposition, single-walled carbon nanotube, double-walled carbon nanotube, Vapor growth carbon fibers such as multi-walled carbon nanotubes and carbon fibers. Further, the form of these fine carbon fibers is not particularly limited, but is preferably formed with high density and high orientation on the substrate for reasons such as easy formation of fine carbon fiber twisted yarn. Single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes are desirable. Note that high density and high orientation means that the carbon nanotubes are adjacent to each other but are perpendicular to the substrate plane (vertical orientation). Specifically, the bulk density of the carbon nanotubes on the substrate is It is about 5 mg / cm3 or more (preferably about 10 to 500 mg / cm3). Such an assembly of fine carbon fibers that are vertically aligned at a high density by chemical vapor deposition is called a carbon nanotube forest or a vertically aligned structure of carbon nanotubes. The length of the fine carbon fiber formed by chemical vapor deposition may be 10 μm or more on average, and preferably 20 μm or more. The average diameter of the fine carbon fibers is not limited, and is usually about 0.4 to 500 nm, preferably about 0.7 to 200 nm, and more preferably about 0.7 to 150 nm. In addition, the number of carbon nanotubes in the fine carbon fiber may be one or more, and preferably 1 to 40.

  The fine carbon fiber used in the present invention can be produced in a highly dense and highly oriented state on a substrate by performing chemical vapor deposition using a hydrocarbon gas such as acetylene.

  The substrate Z is not limited, and a metal substrate such as a plastic substrate, a glass substrate, an Si substrate, iron, copper, or an alloy thereof can be used. In the present invention, iron is deposited or sputtered on the Si substrate. It is preferable to use an iron-coated Si substrate coated with iron. Thereby, a carbon nanotube aggregate formed with high density and high orientation can be produced.

  The temperature at the time of vapor phase growth may be any temperature, but it is particularly preferably high temperature, for example, about 600 to 1000 ° C. Further, the pressure during the vapor phase growth is not limited, but usually it may be performed at atmospheric pressure.

  The gas only needs to contain carbon, but usually a hydrocarbon such as acetylene may be used. A rare gas such as helium may be used as the carrier gas.

  Although reaction time can be suitably set according to manufacturing conditions, it should just be about 3 minutes-2 hours, for example.

  A photograph of an aggregate of carbon nanotubes, which are fine carbon fibers formed on the substrate as described above, is shown in FIG. FIG. 2 is an SEM photograph at a magnification of 300 times, and shows a state in which fine carbon fibers are vertically aligned at high density on the substrate Z. The carbon nanotubes are continuously pulled out from the substrate by holding a part of the carbon nanotubes grown with high density and high orientation on the substrate and pulling them away from the aggregate of carbon nanotubes.

  The drawing means 3 is an apparatus for drawing the fine carbon fibers from the substrate Z in the state of a fine carbon fiber sheet, and in the present embodiment, the winding means for winding the fine carbon fiber twisted yarn formed by the twisting means 4 The device 31 constitutes the extraction means 3. Here, the fine carbon fiber sheet means that the fine carbon fibers drawn from the aggregate of the fine carbon fibers formed on the substrate Z are continuously connected in one direction, for example, a width of 1 μm to 1 m, a thickness This means that a sheet state of 10 nm to 1 cm is formed.

  The winding device 31 includes a bobbin 311 around which a twisted yarn is wound, and a drive motor (not shown) that rotationally drives the bobbin 311. The rotation axis of the bobbin 311 is set to be parallel to an axis perpendicular to the drawing direction (direction indicated by arrow A in the drawing) of the fine carbon fiber drawn from the substrate Z. It is preferable to traverse the bobbin 311 in order to wind up the long fine carbon fiber twisted yarn. Moreover, in order to prevent the slip at the time of winding, the surface of the bobbin 311 may be subjected to anti-slip processing. The method of anti-slip processing is not limited, and examples thereof include a rubber lining, a resin coating, a plain fabric, and an embossing method.

  The twisting means 4 includes a ring-shaped rotating body 41 having a rotation axis along the drawing direction of the sheet-like fine carbon fiber drawn from the substrate Z, and a grip capable of sandwiching the fine carbon fiber drawn from the substrate Z. An apparatus 42 and a motor (not shown) that drives the rotating body 41 to rotate around the rotation axis are provided. The gripping device 42 is disposed at the center of the ring-shaped rotator 41 and includes a pair of rotatable rollers 421 and 421 that sandwich the fine carbon fiber drawn from the substrate Z. The rotation axis of each roller 421 is set to be parallel to an axis perpendicular to the drawing direction of the fine carbon fiber drawn from the substrate Z. With such a configuration, the produced twisted yarn can be led to the rear side (the drawing means 3 side) while producing the twisted yarn while twisting the fine carbon fiber drawn from the substrate Z.

  The spraying means 5 is a device for forming a fine carbon fiber aggregate by spraying a mist-like liquid on the fine carbon fiber sheet drawn by the pulling means 3, and examples thereof include an atomizer, a humidifier, and a nebulizer. be able to. In the present embodiment, a nebulizer that generates mist-like liquid by ultrasonic waves is employed. The liquid sprayed in a mist form by the spraying means 5 is preferably a highly volatile liquid (easily volatile liquid) from the viewpoint of rich quick drying. In the present embodiment, ethanol is adopted as the easily volatile liquid. The liquid sprayed in the form of mist is, for example, acetone, diethyl ether, chloroform, dichloromethane, ethyl acetate, tetrahydrofuran in addition to lower alcohols (methanol, ethanol, propanol, butanol, pentanol) having 1 to 5 carbon atoms. And a mixed solution or an aqueous solution thereof.

  The sandwiching means is a device for sandwiching the fine carbon fiber sheet body (fine carbon fiber aggregate) drawn by the pulling means 3 and sprayed with the easily volatile liquid by the spraying means 5, for example, as shown in FIG. And a pair of rotatable rollers 61 and 61 disposed above and below the fine carbon fiber aggregates, respectively. The rotation axis of each roller 61 is set to be parallel to an axis that is orthogonal to the drawing direction of the fine carbon fiber sheet drawn from the substrate Z. Since the yarn is not swayed when the holding means 6 is provided, the yarn can be sent to the twisting means 4 more stably without being broken. In addition, a drive motor that rotationally drives each roller 61 may be provided separately, and the pair of rollers 61 and 61 may be configured to draw the fine carbon fiber from the substrate Z. In the case of such a configuration, the pair of rollers as the clamping means 6 also has the function of the drawing means 3.

  The substrate fixing means 2, the drawing means 3, the twisting means 4, the spreading means 5 and the clamping means 6 having the above-described configuration are arranged as shown in FIG. 1. That is, the substrate fixing means 2, the spreading means 5, the clamping means 6, the twisting means 4, and the drawing means 3 are arranged in this order from the upstream side (left side in FIG. 1) along the drawing direction of the fine carbon fibers drawn from the substrate Z. The fine carbon fiber drawn from the substrate Z fixed to the substrate fixing means 2 passes through the region where the spraying means 5 is disposed, and then the clamping means 6, the twisting means 4, and the drawing means 3 in this order. Moving.

  A method for continuously producing fine carbon fiber twisted yarn using the fine carbon fiber twisted yarn production apparatus 1 configured as described above will be described below.

  First, a method for pulling out fine carbon fibers formed on the substrate Z and setting the fine carbon fibers in the fine carbon fiber twisted yarn manufacturing apparatus 1 will be described.

  First, the substrate Z on which the aggregate of fine carbon fibers subjected to chemical vapor deposition is formed is fixed to the substrate fixing means 2.

  Next, for example, the fine carbon fiber is pulled out from the side surface of the aggregate of the fine carbon fibers formed on the substrate Z using the drawing tool 7 shown in FIG. The drawing tool 7 has an ultrathin shaft portion 71, and the material thereof is iron, aluminum, stainless steel, plastic, wood, glass or the like, and is not particularly limited. The drawing tool 7 only needs to have an appropriate friction resistance with respect to the fine carbon fiber, and in order to cause friction to the drawing tool 7, the surface of the drawing tool 7 is formed by forming grooves and / or embossing. It is desirable to form fine protrusions. The diameter of the ultrathin shaft portion 71 of the extraction tool 7 is determined depending on the average height of the fine carbon fibers grown on the substrate Z. The diameter is preferably about 1/3 or less of the average height of the fine carbon fibers. If the diameter of the fine carbon fiber is about 1/3 or less, when the drawing tool 7 makes one turn in the aggregate of fine carbon fibers on the substrate Z, the fine carbon fiber is wound around the extra-fine shaft portion 71 for almost one turn. come. To pull out fine carbon fiber with high probability, it is important to keep it tight for more than one lap. Micro drills having a blade diameter of 0.03 mm or more are commercially available, and can be used for the drawing tool 7.

  In order to pull out the fine carbon fibers from the side surface of the aggregate of fine carbon fibers formed on the substrate Z using the drawing tool 7 having such a structure, first, the ultrafine shaft portion 71 of the drawing tool 7 is attached to the substrate. The fine carbon fiber growing on Z is pierced into the side surface of the fine carbon fiber. The depth of entry is preferably 0.01 mm or more. The height position at which the ultrathin shaft portion 71 of the drawing tool 7 is pierced is preferably a height of 1/2 or less of the average height of the fine carbon fibers growing on the substrate Z. At this time of entry, the drawing tool 7 may be rotating, or the rotation may be stopped. The entry is stopped when the ultrathin shaft portion 71 of the drawing tool 7 has entered 0.01 mm or more. With the drawing tool 7 remaining in this place, the drawing tool 7 is rotated at 1 to 1000 rpm for 1 second to 5 minutes to grip the fine carbon fiber, and then the rotation is stopped, and the drawing tool 7 is moved backward to spraying means. The pair of rollers 61 and 61 constituting the clamping means 6 are passed through the region where 5 is disposed. Then, it passes between the pair of rollers 421 and 421 of the twisting means 4 and moves onto the bobbin 311 of the winding device 31 which is the drawing means 3. Here, a desired twist is applied to the fine carbon fiber drawn by rotating the twisting means 4 at a high speed. Thereafter, the drawn fine carbon fiber twisted yarn is brought into contact with the bobbin 311, the bobbin 311 is rotated, the fine carbon fiber twisted yarn is fixed to the bobbin 311, and then the rotation of the bobbin 311 is temporarily stopped. Then, the setting of the apparatus is completed by sandwiching the fine carbon fibers drawn by the rollers 61 and 61 of the clamping means 6 and the rollers 421 and 421 of the twisting means 4.

  Next, the spinning means 5, the twisting means 4, and the drawing means 3 are driven to start continuous spinning of fine carbon fiber twisted yarn. The rotation speed of the twisting means 4 can be adjusted between 1 and 60000 rpm, for example. If the number of rotations is too small, the number of twists that can be applied to the fine carbon fiber twisted yarn is too small, which is not preferable because the yarn strength of the fine carbon fiber twisted yarn is insufficient. On the other hand, when the rotational speed is too large, the drawing stability of the fine carbon fiber twisted yarn from the fine carbon fiber is lowered, which is not preferable. Further, the spinning speed can be adjusted by adjusting the rotation speed of the bobbin 311 and / or the roller 61 and the roller 421. The spinning speed can be adjusted, for example, between 0.005 and 30 m / min. If the winding speed is too low, productivity is poor and it is not practical. On the other hand, if the winding speed is too high, the number of twists that can be applied to the fine carbon fiber twisted yarn is too small, which is not preferable because the yarn strength of the fine carbon fiber twisted yarn is insufficient.

  By rotating the bobbin 311 of the winding device 31 that is the drawing means 3, fine carbon fibers formed on the substrate Z are drawn. The drawn fine carbon fiber is not formed with a twist and has a sheet-like form. The sheet-like fine carbon fiber body (fine carbon fiber sheet body) is sprayed with a mist liquid by the spraying means 5, and each fine carbon fiber constituting the fine carbon fiber body by the spraying of the mist liquid. Are agglomerated with each other by wetting, and the interval between the fine carbon fibers is reduced. The amount of sprayed mist liquid is 0.01 to 10 ml / min.

  Thus, after the fine carbon fiber sheet body (fine carbon fiber aggregate) from which the space | interval between each fine carbon fiber became small and the density of the fine carbon fiber was raised passes the clamping means 6, A desired twist is applied by the high-speed rotation action, and the coil is wound around the bobbin 311 of the winding device 31 which is the drawing means 3.

  Next, a method for exchanging the substrate Z will be described with reference to FIG. In the case of continuously producing a twisted yarn by pulling out fine carbon fibers from the substrate Z, the amount of fine carbon fiber aggregates formed on the substrate Z is reduced, and the substrate Z needs to be replaced. First, the substrate Z is replaced as follows. First, when the amount of the fine carbon fiber aggregate formed on the substrate Z is reduced, the driving of the fine carbon fiber twisted yarn manufacturing apparatus 1 is once stopped. Next, the sandwiching means 6 is operated to move the pair of rollers sandwiching the fine carbon fibers in a direction away from each other. Thereafter, a new substrate is placed adjacent to the substrate (old substrate Z1) held by the substrate fixing means 2, and fine carbon fibers are drawn from the new substrate (new substrate Z2) (FIG. 4A). The fine carbon fiber drawn from the new substrate Z2 also has a sheet form. And after forming a laminated sheet body on the sheet-like fine carbon fiber body drawn out from the old substrate Z1, the spraying means 5 is driven to spray the mist liquid onto the laminated sheet body. The body is aggregated to form a fine carbon fiber aggregated laminate. Thereafter, the twisting means 4 is driven to twist the portions where the fine carbon fibers drawn from the old and new substrates Z1, Z2 overlap (FIG. 4 (b)). Next, the fine carbon fiber drawn from the old substrate Z1 is cut, and the old substrate Z1 is removed from the substrate fixing means 2 and replaced with the new substrate Z2 (FIG. 4C). Then, the clamping means 6 is operated to sandwich the fine carbon fiber drawn from the new substrate Z2 with a pair of rollers, and the replacement of the substrate is completed. After the substrate replacement is completed, the fine carbon fiber twisted yarn production apparatus 1 is driven to resume the yarn production using the new substrate Z2. As described above, the fine carbon fibers drawn from the old substrate Z1 and the fine carbon fibers drawn from the new substrate Z2 can be joined to produce yarns, so that there is no restriction on the yarn length of the twisted yarn.

  The fine carbon fiber twisted yarn manufacturing apparatus 1 according to the present embodiment includes a spraying means 5 for spraying a mist-like liquid on the fine carbon fiber body in a stage before the sheet-like fine carbon fiber body is twisted by the twisting means 4. Since it has, each fine carbon fiber which comprises a fine carbon fiber body can be aggregated mutually, and the closeness of a fine carbon fiber can be raised. As a result, the frictional resistance between the fine carbon fibers constituting the fine carbon fiber body is improved, and a desired twist is applied to the fine carbon fiber body to form a twisted yarn, so that it has a strength suitable for handling. Fine carbon fiber twisted yarn can be produced stably and continuously.

  In addition, the photograph of the fine carbon fiber body containing the area | region where the mist-like liquid of ethanol was sprayed by the spraying means 5 in FIG. From this photograph, in the fine carbon fiber body in which the atomized liquid is dispersed, the atomized liquid that permeates the fine carbon fiber body volatilizes instantaneously, so that the fine carbon fibers are aggregated to increase the density. You can see how they are.

  Moreover, since the easily volatile liquid such as alcohol is adopted as the liquid sprayed in the spray means 5, the sprayed easily volatile liquid sprayed on the sheet-like fine carbon fiber body is fine. After each fine carbon fiber which comprises a carbon fiber body is aggregated mutually, it vaporizes rapidly. Therefore, the sheet-like fine carbon fiber body can be quickly returned to the dried state in the stage where the twisting means 4 is twisted, and the situation where the twisted yarn is cut in the twisting process is surely prevented. be able to.

  Further, since the sandwiching means 6 for sandwiching the sheet-like fine carbon fiber body drawn from the substrate Z is disposed between the spraying means 5 and the twisting means 4, the spraying means 5 sprays the mist liquid. Thus, it is possible to prevent the fine carbon fiber body in a wet state from being twisted. As a result, it is possible to reliably prevent the fine carbon fiber body on which the mist-like liquid is sprayed by the spraying means 5 from being cut along the way.

  Moreover, when replacing | exchanging the board | substrate Z, by spraying a mist-like liquid on the lamination sheet body formed by superposing | stacking the sheet-like fine carbon fiber body each pulled out from the old and new board | substrates Z1 and Z2, a mist-like liquid When volatilizes, the fine carbon fibers constituting the fine carbon fiber bodies aggregate and the fine carbon fiber bodies can be closely stacked. In order to join the fine carbon fiber drawn from the old substrate Z1 and the fine carbon fiber drawn from the new substrate Z2 by twisting the fine carbon fiber bodies closely stacked in this way, It becomes possible to increase the yarn strength in the portion.

  As mentioned above, although one Embodiment of the fine carbon fiber twisted-yarn manufacturing apparatus 1 concerning this invention was described, the specific structure of this invention is not limited to the said embodiment. For example, as shown in FIG. 6, a through hole 81 through which the fine carbon fiber sheet drawn from the substrate Z is inserted is formed between the substrate Z held by the substrate fixing means 2 and the spreading means 5. A configuration in which the protective cover 8 is disposed may be employed. With such a configuration, the mist-like liquid sprayed from the spraying means 5 can be prevented from pouring onto the aggregate of fine carbon fibers on the substrate Z, and the fine carbon fibers can be reliably pulled out from the substrate Z. Can be maintained in a state.

  Moreover, in the said embodiment, although the twisting means 4 and the extraction means 3 are comprised as a different body, as shown in FIG. 7, instead of the holding | grip apparatus 42 with which the twisting means 4 is provided, the drawing means is provided, for example. You may comprise so that 3 may be attached to the rotary body 41 integrally. When such a configuration is adopted, both are arranged so that the rotation axis of the bobbin 311 constituting the extraction means 3 is orthogonal to the rotation axis of the rotating body 41 of the twisting means 4. Thus, by integrating the twisting means 4 and the drawing means 3, the fine carbon fiber twisted yarn manufacturing apparatus 1 can be miniaturized.

  Further, with respect to the configuration of the fine carbon fiber twisted yarn manufacturing apparatus 1 shown in FIG. 7, an auxiliary twisting means 9 is provided between a device in which the twisting means 4 and the drawing means 3 are integrated and the clamping means 6. Also good. FIG. 8 shows a fine carbon fiber twisted yarn manufacturing apparatus 1 having such a configuration. The auxiliary twisting means 9 shown in FIG. 8 has a rotation axis along the drawing direction of the sheet-like fine carbon fiber body drawn from the substrate Z, and the fine carbon fiber drawn from the substrate Z around the rotation axis. A ring-shaped auxiliary rotating body 91 that forms a twisted yarn by rotating the body is provided. The auxiliary rotating body 91 is provided with a feeding means 92 composed of a pair of rollers 921 and 921 for feeding the drawn sheet-like fine carbon fiber body from both sides to the rear side. The rotation axes of the rollers 921 and 921 are set so as to be parallel to an axis line orthogonal to the drawing direction of the fine carbon fiber body drawn from the substrate Z. In addition, a drive motor (not shown) that rotationally drives each roller may be provided, and the feeding unit 92 may be configured to have a function of pulling out fine carbon fibers from the substrate Z. The rotating directions of the twisting means 4 and the auxiliary twisting means 9 are opposite to each other. When the fine carbon fiber twisted yarn manufacturing apparatus 1 is configured as described above, the number of twists obtained by integrating the number of twists by the auxiliary twisting means 9 and the number of twists by the twisting means 4 is wound around the bobbin 311. Applied to fine carbon fiber twisted yarn. For example, when producing a fine carbon fiber twisted yarn having a twisting speed of 80000 T / m, if the rotational speed of the twisting means 4 is 1000 rpm and the rotational speed of the auxiliary twisting means 9 is 800 rpm, the spinning speed is 10 m / min. It becomes possible to produce a fine carbon fiber twisted yarn having a very large multiplication speed at a high speed.

  Moreover, as a modification of the fine carbon fiber twisted yarn manufacturing apparatus 1 shown in FIG. 8, a structure as shown in FIG. 9 can also be adopted. In this apparatus, as the drawing means 3 that is integrally attached to the twisting means 4, an apparatus similar to the feeding means 92 that is attached to the auxiliary twisting means 9 is adopted, and is manufactured on the rear side of the twisting means 4. A winding device 31 for winding the twisted yarn is disposed. The rotation directions of the twisting means 4 and the auxiliary twisting means 9 are the same. In the case of such a structure, the auxiliary twisting means 9 and the feeding means 92 in the twisting means 4 and the winding device 31 have the function of the drawing means 3 for pulling out the fine carbon fibers from the substrate Z. When the fine carbon fiber twisted yarn manufacturing apparatus 1 is configured in this manner, the number of twists obtained by integrating the number of twists by the auxiliary twisting means 9 and the number of twists by the twisting means 4 is wound around the bobbin 311. Applied to fine carbon fiber twisted yarn. For example, when producing a fine carbon fiber twisted yarn having a twisting speed of 80000 T / m, if the rotational speed of the twisting means 4 is 1000 rpm and the rotational speed of the auxiliary twisting means 9 is 800 rpm, the spinning speed is 10 m / min. It becomes possible to produce a fine carbon fiber twisted yarn having a very large multiplication speed at a high speed.

  Moreover, in the said embodiment, although the structure which draws out fine carbon fiber from the single board | substrate Z as shown in FIG. 1 and manufactures a twisted thread was demonstrated, for example, as shown in FIG. It is also possible to produce a twisted yarn by pulling out carbon fibers. In such a case, as shown in FIG. 10, sheet-like fine carbon fiber bodies drawn from the respective substrates Z are overlapped to form a laminated sheet body, and a mist liquid is applied to the laminated sheet body from the spraying means 5. The fine carbon fiber agglomerated laminate is formed by spraying, and then twisted by the twisting means 4. Each fine carbon fiber constituting each fine carbon fiber aggregates by agglomerating the sprayed liquid onto a laminated sheet formed by superimposing the sheet-like fine carbon fiber drawn from each substrate Z. The fine carbon fiber bodies can be laminated closely to each other. As a result, even when fine carbon fibers are drawn from a plurality of substrates Z to produce a twisted yarn, it is possible to reliably produce a twisted yarn having a strength suitable for handling.

  Hereinafter, the present invention will be described in detail using examples. In addition, this invention is not limited to the following Example.

  Measurement of size of droplet sprayed from spraying means 5: The droplet was sprayed using an OMRON ultrasonic nebulizer NE-U07. The particle size of the droplets was measured using a laser diffraction particle size distribution measuring device “Mastersizer 2000” manufactured by Malvern, England. The measurement principle is based on the laser diffraction / scattering method based on Mie theory. The volume-based cumulative particle size distribution of the droplets was created, and the 50% diameter (median diameter) was used as the particle diameter of the atomized liquid. Regardless of the type of solvent to be sprayed, the particle size of the mist liquid was 1 μm to 5 μm.

  Measurement of diameter of twisted yarn: Using a scanning electron microscope “JSM-7401F” manufactured by JEOL Ltd., a micrograph was taken to measure the yarn diameter.

  Measurement of tensile strength of twisted yarn: Using an automatic load tester “MAX-1KN-S” manufactured by Japan Measuring System Co., Ltd., a tensile test was performed at a yarn length of 1 cm and a tensile speed of 1 mm / min.

  By sputtering iron onto a silicon substrate (commercial product, 1 cm 2), a silicon substrate on which a catalyst layer made of an iron film having a thickness of 4 nm was laminated was manufactured. This substrate was placed in a thermal CVD apparatus, and a carbon nanotube aggregate was formed on the substrate by performing a thermal CVD method. The gas supplied into the thermal CVD apparatus was a mixed gas of acetylene gas and helium gas (acetylene gas 5.77 vol%). The thermal CVD conditions were temperature: 700 ° C., pressure: atmospheric pressure, acetylene gas concentration increase rate in the initial stage: 0.10 vol% / second, and reaction time: 10 minutes. The carbon nanotubes grown on the substrate had an average length of 180 μm, a thickness of 15 nm, a number of layers of 10 and a bulk density of 30 mg / cm 2, and were formed with high density and high orientation (FIG. 2).

  A carbon nanotube substrate Z in which a linear portion having a width of 100 μm is defined using a microknife (Feather Razor microsurgical blade K-715, tip angle 15 °) on the carbon nanotube aggregate obtained as described above. Was made.

  A part of the carbon nanotubes was scraped from the carbon nanotube substrate Z, a silicon portion necessary for holding the substrate was exposed, and the substrate was held by the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1).

  A drawing tool 7 (commercially available micro drill with a tip diameter of 30 μm) is pierced 0.1 mm deep on the side surface of the carbon nanotube aggregate having a width of 100 μm, rotated at 1000 rpm for 1 second, entangled and gripped with the carbon nanotubes, and then pulled. The rotation of the extraction tool 7 was stopped, and the extraction tool 7 was separated from the substrate Z by driving the motor, whereby the carbon nanotubes were continuously drawn out in a chain.

  The drawing tool 7 was moved backward to pass between a pair of rollers 61 and 61 constituting the clamping means 6 through a region where the spraying means 5 is disposed. Thereafter, the pair of rollers 421 and 421 of the twisting means 4 was passed through and moved onto the bobbin 311 of the winding device 31 as the drawing means 3, and the drawn fine carbon fiber was fixed to the bobbin 311.

  Thereafter, the fine carbon fiber was sandwiched between the pair of rollers 61 and 61 constituting the sandwiching means 6 and the pair of rollers 421 and 421 of the twisting means 4.

  From the spraying means 5 (Omron ultrasonic nebulizer NE-U07) disposed between the substrate fixing means 2 and the clamping means 6, ethanol mist having a particle diameter of 1 μm to 5 μm is applied to fine carbon fibers at a spray amount of 0.1 ml / min. While spraying, the twisting means 4 is rotated at 8000 rpm, and further wound at a winding speed of 0.1 m / min, and a continuous twisted yarn of 80000 T / m per 1 m is produced over 10 m without breaking the yarn. We were able to. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1233 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The average length of the carbon nanotubes grown on the substrate was 190 μm, the thickness was 20 nm, the number of layers was 15, the bulk density was 20 mg / cm 2, and the carbon nanotubes were formed with high density and high orientation. A carbon nanotube substrate Z in which a linear portion having a width of 250 μm was defined was prepared using a microknife for the aggregate of carbon nanotubes obtained as described above. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 1.5 μm and a tensile strength of 930 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The carbon nanotubes grown on the substrate had an average length of 200 μm, a thickness of 10 nm, a number of layers of 7, and a bulk density of 40 mg / cm 2, and were formed with high density and high orientation. A carbon nanotube substrate Z in which a linear portion having a width of 400 μm was defined was produced using a microknife for the aggregate of carbon nanotubes obtained as described above. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 2.3 μm and a tensile strength of 756 MPa.

  By sputtering iron on a silicon substrate (commercial product, 1 cm 2), a silicon substrate on which a catalyst layer made of an iron film having a thickness of 1 nm was laminated was manufactured. This substrate was placed in a thermal CVD apparatus, and a carbon nanotube aggregate was formed on the substrate by performing a thermal CVD method. The gas supplied into the thermal CVD apparatus was a mixed gas of acetylene gas and helium gas (acetylene gas 2.55 vol%). The thermal CVD conditions were temperature: 700 ° C., pressure: atmospheric pressure, acetylene gas concentration increase rate in the initial stage: 0.10 vol% / second, and reaction time: 10 minutes. The carbon nanotubes grown on the substrate had an average length of 180 μm, a thickness of 1 nm, a number of layers of 1 (single layer), a bulk density of 30 mg / cm 2, and a high density and high orientation. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  By sputtering iron on a silicon substrate (commercial product, 1 cm 2), a silicon substrate on which a catalyst layer made of an iron film having a thickness of 1.5 nm was laminated was manufactured. This substrate was placed in a thermal CVD apparatus, and a carbon nanotube aggregate was formed on the substrate by performing a thermal CVD method. The gas supplied into the thermal CVD apparatus was a mixed gas of acetylene gas and helium gas (acetylene gas 3.05 vol%). The thermal CVD conditions were temperature: 700 ° C., pressure: atmospheric pressure, acetylene gas concentration increase rate in the initial stage: 0.10 vol% / second, and reaction time: 10 minutes. The carbon nanotubes grown on the substrate had an average length of 180 μm, a thickness of 3 nm, a number of layers of 2 (two layers), a bulk density of 30 mg / cm 2, and a high density and high orientation. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 170 μm and a thickness of 40 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 35 layers and a bulk density of 35 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.5 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1170 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The average length of the grown carbon nanotubes was 210 μm and the thickness was 20 nm. The aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 15 layers and a bulk density of 50 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 1.0 ml / min, twisting means 4 is rotated at 8000 rpm, and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1250 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 185 μm and a thickness of 22 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 17 layers and a bulk density of 33 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying acetone mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm, and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1210 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 195 μm and a thickness of 10 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 6 layers and a bulk density of 27 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying methanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm, and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 205 μm and a thickness of 28 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 20 layers and a bulk density of 28 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While blowing the diethyl ether mist having a particle diameter of 1 μm to 5 μm from the spraying means 5 onto the fine carbon fiber at a spray amount of 0.1 ml / min, the twisting means 4 is rotated at 8000 rpm, and the winding speed is 0.1 m / min. A continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without winding or breaking. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1230 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 235 μm and a thickness of 25 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 18 layers and a bulk density of 19 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying dichloromethane mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1255 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 150 μm and a thickness of 31 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 21 layers and a bulk density of 41 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethyl acetate mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm, and the winding speed is 0.1 m / min. A continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without winding or breaking. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1120 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 205 μm and a thickness of 17 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 12 layers and a bulk density of 50 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying tetrahydrofuran mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 195 μm and a thickness of 35 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 28 layers and a bulk density of 28 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying a mixed solution mist of 50% ethanol and 50% acetone having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fibers at a spray rate of 0.1 ml / min, the twisting means 4 is rotated at 8000 rpm, and further wound It was wound at a take-up speed of 0.1 m / min, and a continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1225 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 190 μm and a thickness of 15 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 10 layers and a bulk density of 38 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying a mixed solution mist of 50% diethyl ether and 50% dichloromethane having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fibers at a spray rate of 0.1 ml / min, rotating twisting means 4 at 8000 rpm, Winding was performed at a winding speed of 0.1 m / min, and a continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1215 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 185 μm and a thickness of 10 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 8 layers and a bulk density of 38 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying 50% aqueous ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray rate of 0.1 ml / min, the twisting means 4 is rotated at 8000 rpm, and the winding speed is 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m per 1 m over 10 m or more without winding up in minutes. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1220 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 200 μm and a thickness of 20 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 18 layers and a bulk density of 35 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying a 50% aqueous solution mist of acetone having a particle diameter of 1 μm to 5 μm from the spraying means 5 onto the fine carbon fiber at a spray rate of 0.1 ml / min, the twisting means 4 is rotated at 8000 rpm, and the winding speed is 0.1 m / It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m per 1 m over 10 m or more without winding up in minutes. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 185 μm and a thickness of 22 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 17 layers and a bulk density of 33 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 16000 rpm and further wound at a winding speed of 0.2 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1210 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 195 μm and a thickness of 15 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 10 layers and a bulk density of 30 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 40000 rpm and further wound at a winding speed of 0.5 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1220 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 190 μm and a thickness of 18 nm. The aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 13 layers and a bulk density of 23 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 800 rpm and further wound at a winding speed of 0.01 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1215 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 150 μm and a thickness of 21 nm. The aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 15 layers and a bulk density of 29 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 7). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1115 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The average length of the grown carbon nanotubes was 170 μm and the thickness was 25 nm. The aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 13 layers and a bulk density of 43 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 8). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray amount of 0.1 ml / min, twisting means 4 is rotated at 100 rpm, auxiliary twisting means 9 is rotated at 80 rpm, Furthermore, it was wound up at a winding speed of 0.1 m / min, and a continuous twisted yarn having a twist of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1180 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 190 μm and a thickness of 18 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 14 layers and a bulk density of 23 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 8). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from the spraying means 5 onto the fine carbon fiber at a spray amount of 0.1 ml / min, the twisting means 4 is rotated at 400 rpm, the auxiliary twisting means 9 is rotated at 200 rpm, Furthermore, it was wound up at a winding speed of 1 m / min, and a continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The average length of the grown carbon nanotubes was 210 μm and the thickness was 15 nm. The aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 10 layers and a bulk density of 37 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 8). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray amount of 0.1 ml / min, twisting means 4 is rotated at 4000 rpm, auxiliary twisting means 9 is rotated at 200 rpm, Further, it was wound at a winding speed of 10 m / min, and a continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1230 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 160 μm and a thickness of 38 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 30 layers and a bulk density of 43 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 9). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spray amount of 0.1 ml / min, twisting means 4 is rotated at 100 rpm, auxiliary twisting means 9 is rotated at 80 rpm, Furthermore, it was wound up at a winding speed of 0.1 m / min, and a continuous twisted yarn having a twist of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1150 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 2050 μm and a thickness of 18 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 14 layers and a bulk density of 26 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 9). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 1000 rpm, auxiliary twisting means 9 is rotated at 800 rpm, Further, it was wound at a winding speed of 10 m / min, and a continuous twisted yarn having a twist number of 80000 T / m per 1 m could be produced over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1220 MPa.

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 250 μm and a thickness of 18 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 15 layers and a bulk density of 37 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. Two carbon nanotube substrates Z were fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 10). While spraying ethanol mist having a particle diameter of 1 μm to 5 μm from spraying means 5 onto fine carbon fiber at a spraying amount of 0.1 ml / min, twisting means 4 is rotated at 8000 rpm and further wound at a winding speed of 0.1 m / min. It was possible to produce a continuous twisted yarn having a twist number of 80000 T / m over 10 m or more without breaking the yarn. The produced twisted yarn had a diameter of 1.6 μm and a tensile strength of 900 MPa.

  In the fine carbon fiber twisted yarn production apparatus 1 (FIG. 1), once the amount of fine carbon fiber aggregates formed on the carbon nanotube substrate Z produced in the same manner as in Example 1 is reduced, the fine carbon fiber is temporarily used. The drive of the fiber twist production apparatus 1 was stopped. Next, the sandwiching means 6 was operated to move the pair of rollers sandwiching the fine carbon fiber in a direction away from each other.

  Thereafter, a new substrate (new substrate Z2) was placed adjacent to the substrate (old substrate Z1) held by the substrate fixing means 2. A drawing tool 7 (commercially available micro drill with a tip diameter of 30 μm) is inserted into the side surface of the carbon nanotube aggregate on the new substrate Z2 to a depth of 0.1 mm, and the carbon nanotubes are entangled by rotating at 1000 rpm for 1 second. By separating from the substrate Z2 by driving the motor, the carbon nanotubes were continuously drawn out in a chain.

  And after superposing on the sheet-like fine carbon fiber body pulled out from the old substrate Z1 to form a laminated sheet body, the spraying means 5 is driven and ethanol mist having a particle diameter of 1 μm to 5 μm is applied to the laminated sheet body. After spraying at a spray rate of 0.1 ml / min, the twisting means 4 is driven at 10000 rpm for 1 minute, and the portions where the fine carbon fibers drawn from the old and new substrates Z1 and Z2 overlap are twisted. It was.

  Next, the fine carbon fiber drawn from the old substrate Z1 was cut with a microknife, and the old substrate Z1 was removed from the substrate fixing means 2 and replaced with a new substrate Z2. And the clamping means 6 was operated and the fine carbon fiber pulled out from the new board | substrate Z2 was pinched with a pair of roller, and the replacement | exchange of a board | substrate was completed. After completion of the substrate replacement, the twisting means 4 is rotated at 8000 rpm, wound at a winding speed of 0.1 m / min, and continuously twisted at a twist number of 80000 T / m over 10 m without breaking the yarn. Was able to be produced. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

  In the fine carbon fiber twisted yarn production apparatus 1 (FIG. 1), when the amount of fine carbon fiber aggregates formed on the carbon nanotube substrate Z produced in the same manner as in Example 1 is reduced, the spreading means is first applied. One minute after stopping 5, the drive of the fine carbon fiber twist production apparatus 1 was stopped.

  The new substrate (new substrate Z2) was placed adjacent to the substrate (old substrate Z1) held by the substrate fixing means 2, with the rollers of the clamping means 6 unchanged. A drawing tool 7 (commercially available micro drill with a tip diameter of 30 μm) is inserted into the side surface of the carbon nanotube aggregate on the new substrate Z2 to a depth of 0.1 mm, and the carbon nanotubes are entangled by rotating at 1000 rpm for 1 second. By separating from the substrate Z2 by driving the motor, the carbon nanotubes were continuously drawn out in a chain.

  After superposing the fine carbon fiber sheet drawn from the new substrate Z2 on the sheet-like fine carbon fiber body drawn from the old substrate Z1 to form a laminated sheet body, the spreading means 5 is driven to drive the laminated sheet The spraying means 5 was driven on the body, and an ethanol mist having a particle diameter of 1 μm to 5 μm was sprayed on the laminated sheet body at a spray amount of 0.1 ml / min to integrate the laminated sheet body.

  Next, the fine carbon fiber drawn from the old substrate Z1 was cut with a microknife, the old substrate Z1 was removed from the substrate fixing means 2 and replaced with the new substrate Z2, and the replacement of the substrate was completed. After completion of the substrate replacement, the twisting means 4 is rotated at 8000 rpm, wound at a winding speed of 0.1 m / min, and continuously twisted at a twist number of 80000 T / m over 10 m without breaking the yarn. Was able to be produced. The produced twisted yarn had a diameter of 0.8 μm and a tensile strength of 1200 MPa.

Comparative Example 1

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 180 μm and a thickness of 15 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 10 layers and a bulk density of 30 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 100 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). Without spraying the ethanol mist from the spraying means 5 onto the fine carbon fiber, the twisting means 4 is rotated at 8000 rpm, wound at a winding speed of 0.1 m / min, and the number of twists per 1 m is 80000 T / m over 10 m or more. m continuous twisted yarn could be produced. The produced twisted yarn had a diameter of 0.9 μm and a tensile strength of 841 MPa.

Comparative Example 2

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 190 μm and a thickness of 20 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 15 layers and a bulk density of 20 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 250 μm was defined was prepared using a microknife for the aggregate of carbon nanotubes obtained as described above. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). Without spraying the ethanol mist from the spraying means 5 onto the fine carbon fiber, the twisting means 4 is rotated at 8000 rpm, wound at a winding speed of 0.1 m / min, and the number of twists per 1 m is 80000 T / m over 10 m or more. m continuous twisted yarn could be produced. The produced twisted yarn had a diameter of 1.7 μm and a tensile strength of 603 MPa.

Comparative Example 3

  A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 200 μm and a thickness of 10 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 7 layers and a bulk density of 40 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 400 μm was defined was produced using a microknife for the aggregate of carbon nanotubes obtained as described above. The carbon nanotube substrate Z was fixed to the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1). Without spraying the ethanol mist from the spraying means 5 onto the fine carbon fiber, the twisting means 4 is rotated at 8000 rpm, wound at a winding speed of 0.1 m / min, and the number of twists per 1 m is 80000 T / m over 10 m or more. m continuous twisted yarn could be produced. The produced twisted yarn had a diameter of 2.6 μm and a tensile strength of 451 MPa.

Comparative Example 4

A twisted yarn was produced using carbon nanotubes grown on a substrate produced in the same manner as in Example 1. The grown carbon nanotubes had an average length of 170 μm and a thickness of 40 nm, and the aggregate of carbon nanotubes on the substrate was formed with a high density and high orientation of 35 layers and a bulk density of 35 mg / cm 2. A carbon nanotube substrate Z in which a linear portion having a width of 1250 μm was defined on the aggregate of carbon nanotubes obtained as described above was produced using a microknife. The carbon nanotube substrate Z was held on the substrate fixing means 2 of the fine carbon fiber twisted yarn manufacturing apparatus 1 (FIG. 1).
As in Comparative Example 1, the twisting means 4 is rotated at 4000 rpm without blowing the ethanol mist from the spraying means 5 onto the fine carbon fiber, and further wound up at a winding speed of 0.1 m / min for over 10 m. A continuous twisted yarn having a twist number of 40000 T / m per 1 m could be produced. The produced twisted yarn had a diameter of 7.1 μm and a tensile strength of 148 MPa.

Comparative Example 5

A twisted yarn having a diameter of 7.1 μm produced in the same manner as in Comparative Example 4 was immersed in an ethanol solution and then dried. The tensile strength of the twisted yarn after drying was 148 MPa.

The graph created from the result of Table 1 is shown in FIGS.

  From these results, it can be seen that by spraying ethanol, the fine carbon fiber twisted yarn was tightened to increase the strength. Moreover, spraying is more effective than impregnating the twisted yarn with ethanol.

  As is clear from the above description, according to the method of the present invention, it is possible to continuously produce a carbon nanotube twisted yarn having a strength suitable for handling.

It is a schematic block diagram of the fine carbon fiber twisted-yarn manufacturing apparatus which concerns on one Embodiment of this invention. It is a SEM photograph of a substrate on which carbon nanotubes are grown with high density and high orientation. It is explanatory drawing for demonstrating the drawing tool for drawing out fine carbon fiber from a board | substrate. It is explanatory drawing explaining the method to replace | exchange the board | substrate with which fine carbon fiber was formed. It is principal part sectional drawing which shows the conventional screen printing plate. It is a schematic block diagram which shows the 1st modification of the fine carbon fiber twisted-yarn manufacturing apparatus shown in FIG. It is a schematic block diagram which shows the 2nd modification of the fine carbon fiber twisted-yarn manufacturing apparatus shown in FIG. It is a schematic block diagram which shows the 3rd modification of the fine carbon fiber twisted-yarn manufacturing apparatus shown in FIG. It is a schematic block diagram which shows the 4th modification of the fine carbon fiber twisted-yarn manufacturing apparatus shown in FIG. It is a schematic block diagram which shows the 5th modification of the fine carbon fiber twisted-yarn manufacturing apparatus shown in FIG. It is a graph which shows the relationship between the definition width | variety of the carbon nanotube twisted-yarn produced in Examples 1-3 and Comparative Examples 1-3, and a yarn average diameter. It is a graph which shows the relationship between the yarn average diameter of the carbon nanotube twisted yarn produced in Examples 1-3 and Comparative Examples 1-3, and tensile strength.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fine carbon fiber twisted-yarn manufacturing apparatus 2 Substrate fixing means 3 Pull-out means 4 Twisting means 41 Rotating body 42 Holding device 5 Scattering means 6 Holding means 7 Pull-out tool 8 Protective cover 9 Auxiliary twisting means

Claims (8)

An apparatus for continuously producing twisted yarns of fine carbon fibers from an aggregate of fine carbon fibers grown by chemical vapor deposition on a substrate,
A drawing means capable of drawing a fine carbon fiber from the substrate to form a fine carbon fiber sheet body;
A spraying means capable of forming a fine carbon fiber aggregate by spraying a mist-like liquid on the fine carbon fiber sheet pulled out by the pulling means;
A fine carbon fiber twisted yarn manufacturing apparatus comprising twisting means for twisting a fine carbon fiber aggregate formed by spraying a mist-like liquid to form a twisted yarn.   The fine carbon fiber twisted yarn manufacturing apparatus according to claim 1, wherein the mist liquid is a mist easily volatile liquid.   The apparatus for producing a fine carbon fiber twisted yarn according to claim 1 or 2, wherein the fine carbon fiber is a carbon nanotube. It further comprises clamping means for clamping the fine carbon fiber sheet body drawn from the substrate,
The clamping means is arranged between the substrate and the twisting means,
The fine carbon fiber twisted yarn manufacturing apparatus according to any one of claims 1 to 3, wherein the spreading means is disposed between the substrate and the clamping means. The twisting means has a rotating shaft along the drawing direction of the fine carbon fiber sheet drawn from the substrate, and twists the yarn by rotating the fine carbon fiber sheet drawn from the substrate around the rotating shaft. A rotating body that forms
The apparatus for producing a fine carbon fiber twisted yarn according to any one of claims 1 to 4, wherein the drawing means is integrally attached to the rotating body. A method for continuously producing a fine carbon fiber twisted yarn from an aggregate of fine carbon fibers grown on a substrate by chemical vapor deposition,
A drawing step capable of drawing a fine carbon fiber from the substrate to form a fine carbon fiber sheet body;
A spraying step of spraying a mist-like liquid on the fine carbon fiber sheet body pulled out by the pulling step to form a fine carbon fiber aggregate;
A fine carbon fiber twisted yarn manufacturing method comprising: a twisting step of twisting a fine carbon fiber aggregate formed by spraying a mist-like liquid to form a twisted yarn. A method for producing twisted yarns of fine carbon fibers from an aggregate of fine carbon fibers grown on a first substrate and a second substrate, respectively,
A first drawing step capable of forming a first fine carbon fiber sheet by drawing fine carbon fibers from the first substrate;
A second drawing step capable of forming a second fine carbon fiber sheet body by drawing fine carbon fibers from the second substrate;
A laminating step of superposing the first fine carbon fiber sheet body and the second fine carbon fiber sheet body to form a laminated sheet body;
A spraying step of spraying a mist liquid on the laminated sheet body to form a fine carbon fiber aggregated laminate,
A fine carbon fiber twisted yarn manufacturing method comprising: a twisting step of twisting a fine carbon fiber aggregated laminate formed by spraying a mist-like liquid to form a twisted yarn. The said lamination | stacking step is a fine carbon fiber twisted-yarn manufacturing method of Claim 7 provided with the cutting step which cut | disconnects any one of a 1st fine carbon fiber sheet body and a 2nd fine carbon fiber sheet body.