CN107881768A - A kind of stretchable strain transducer based on polyurethane fiber and preparation method thereof - Google Patents
A kind of stretchable strain transducer based on polyurethane fiber and preparation method thereof Download PDFInfo
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- CN107881768A CN107881768A CN201711229196.1A CN201711229196A CN107881768A CN 107881768 A CN107881768 A CN 107881768A CN 201711229196 A CN201711229196 A CN 201711229196A CN 107881768 A CN107881768 A CN 107881768A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
- D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/38—Polyurethanes
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- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
Abstract
The invention discloses a kind of stretchable strain transducer based on polyurethane fiber and preparation method thereof, it is the collaboration conductive mesh network layers for being enclosed with inner layer conductive structure graphite alkene nanoscale twins and outer layer conductive structure carbon black and single-walled carbon nanotube successively on the surface of matrix using polyurethane fiber as matrix.Gained strain transducer of the invention possess good lightweight flexible, tensile properties and can large-scale integrated characteristic, can be as the wearable device compatible with skin.
Description
Technical field
The invention belongs to sensor field, and in particular to a kind of stretchable strain transducer based on polyurethane fiber and its
Preparation method.
Background technology
Wearable strain transducer possesses high flexibility and draftability, has similar human body skin feeling function as a kind of
Sensing sensitivity, the artificial flexible electronic device that external environment information Perception function can be achieved, artificial intelligence, bioelectronics and
Medical treatment and field of human-computer interaction are with a wide range of applications.Conceive, design and prepare for human motion detection, life entity
Sign monitoring and voice signal or the strain transducer of gesture identification it is interesting recently, turn into flexible electronic, artificial skin with
And the study hotspot in the field such as health care.High draftability, flexible must be had based on sensor used in above-mentioned application
Property and good sensitivity.Metal mold and rigid semiconductor section bar material and human skin only with limited stretch not phase
Hold, at the same it is biologically also incompatible, as JL Tanner et al. have prepared a kind of strain sensing based on Pt nanoparticle
Device, but its rigidity is very big, can not be applied to the preparation of wearable device.At present, existing wearable strain transducer ductility it is low,
Poor durability, limit its application.Therefore, novel flexible substrate and sensitive material and corresponding preparation method are to be worthy of consideration
With probe into.
For stretchable strain transducer, from base material, Fillers selection and preparation technology etc., nearest state
Inside and outside researcher conducts extensive research, and develops a variety of strain transducers.For in general elastomer or polymer matrix
Bottom, metal nanoparticle or nano wire (such as silver, copper) and carbon nanomaterial (such as carbon black, CNT and graphene) pass through scattered
In polymeric matrix or parcel is widely used on the surface of the substrate.Xiaohui Guo et al. are based on spin coating proceeding, with poly-
Polymer substrates devise a kind of strain transducer with sandwich structure, available for movable at gesture identification and human synovial
Monitoring, but some problems be present in such method：On the one hand, the high concentration conductive material being added in matrix not only reduces
Pliability, and also limit the draftability of synthetic composite material；On the other hand, when apply strain when, strain transducer it is thin
Uniform micromechanism and form change to heterogeneous state in film or coating, resistance variations when causing continuous strain variation
Nonlinear response.Xiao Li et al. prepare a kind of graphene fabric strain sensors based on CVD techniques, although sensitivity is very
Height, but the microstructure of film causes nonlinear electrical response to non-homogeneous metamorphosis under extended state.Morteza
Amjadi et al. devises a kind of strain transducer based on copolyesters, carbon nanotube composite materials, maximum tension limit
Reach 500%, but limit its application in wearable devices field the problem of sensitivity is relatively low.More preferable linear properties table
Show that sensor can detect and the caused change with the strain of application of quantitative analysis resistance value.Nevertheless, consider simultaneously
Draftability, linear and sensitivity are still the challenge of most of strain transducers.
The ductility, elasticity, portability and the large-scale integrated that possess due to fabric, fiber and yarn etc. etc. are excellent
Characteristic performance, while in view of environmental protection and cost benefit, therefore drawn as the new substrates material of strain transducer
Play increasing concern.Fiber or fabric by modification are combined with sensitive material and transducing part to be integrated, can
It is prepared as the smart fabric sensor sensitive to physical quantity such as stress, elongation strain and temperature change.Although lack unified mark
Accurate and guideline, causes it not to be widely used, but this kind of material provides a kind of alternative for wearable electronic
Case.Recently, polyurethane-based material is employed by multi-form, and such as thermoplastic polyurethane, polyurethane sponge and polyurethane are fine
Dimension etc..Sensor has the sensitivity of improved tensility or enhancing made of above-mentioned material, is expected to solve wearable answer
Become the relevant issues of sensor.
The content of the invention
A kind of method of the invention based on dip-coating, it is proposed that stretchable strain transducer based on polyurethane fiber
And preparation method thereof, it is intended to solve existing strain transducer ductility is low, the linearity is not high, it is flexible difference and be difficult to compatible with skin
And the problem of poor durability, and improve ability of the strain transducer as wearable device.
The present invention solves technical problem, adopts the following technical scheme that：
Stretchable strain transducer of the invention based on polyurethane fiber, its feature are：The stretchable strain sensing
Device is using polyurethane fiber as matrix, and inner layer conductive structure and outer layer conductive structure are enclosed with successively on the surface of described matrix；
Described inner layer conductive structure is graphene nano lamella, and described outer layer conductive structure is the association of carbon black and single-walled carbon nanotube
With conductive mesh network layers.
There is the stretchable strain transducer double mode to cooperate with conductive mechanism：On the one hand it is carbon black in outer layer conductive structure
Conductive mechanism is cooperateed between single-walled carbon nanotube；On the other hand between inside and outside bilayer conductive structure in laminated construction
Cooperate with conductive mechanism, i.e. carbon black in outer layer conductive structure and single-walled carbon nanotube compounded mix and the stone in inner layer conductive structure
Synergy between black alkene.
The fracture strength of the urethane fibers is 0.03~0.09N/tex, elongation at break is 450%~800%.With
Other common fabric fibres contrasts, the elongation at break of urethane fibers is very high, but relatively low disconnected with one
Resistance to spalling, show that urethane fibers have excellent pliability and draftability concurrently.
The elongation at break of the stretchable strain transducer of the present invention reaches 350%, in 0-100% range of stretch
Strain resistor change curve, the fit value of its linear fit is between 0.990-1.
The preparation method of stretchable strain transducer, it is characterised in that comprise the following steps：
Step 1, prepare Aqueous Solutions of Polyethylene Glycol
Weighing 0.03~0.06g polyethylene glycol and be added to 15mL deionized waters, magnetic agitation extremely dissolves at 60~80 DEG C, then
0.5~1h of ultrasonic disperse, obtain the aqueous solution for the polyethylene glycol that concentration is 2~4mg/mL；
Step 2, the surface of polyurethane fiber are modified
With deionized water clean polyurethane fiber to remove surface impurity, it is subsequently placed in air after air drying, then soak
Stain 5~10min in polyglycol solution prepared by step 1, take out, it is normal with after deionized water rinsing, being placed in air again
Temperature is dried, and obtains poly ethyldiol modified polyurethane fiber；
Step 3, the compound aqueous solution for preparing graphene and poly (sodium 4-styrenesulfonate)
By 0.03~0.06g graphene nanometer sheets and 0.03~0.06g poly (sodium 4-styrenesulfonate)s in mass ratio 1：1 adds
It is mixed and stirred for uniformly, 0.5~1h of magnetic agitation again after 2~3h of gained mixed liquor ultrasonic disperse, obtaining into 15mL deionized waters
To graphene and the compound aqueous solution of poly (sodium 4-styrenesulfonate)；
The parcel of step 4, inner layer conductive structure
Poly ethyldiol modified polyurethane fiber is impregnated in 5~10min in compound aqueous solution prepared by step 3, taken out
Be placed in air drying in air, altogether repeated impregnations, dry 3~4 times, by the sulfonic group in poly (sodium 4-styrenesulfonate)-
SO3The hydrogen bonding formed between hydroxyl-OH in H and polyethylene glycol, i.e., uniformly superscribe stone on the surface of polyurethane fiber
Black alkene nanoscale twins；
The preparation of step 5, carbon black/single-walled carbon nanotube/silicon rubber composite conducting solution
By 0.1g carbon blacks and 0.05g single-walled carbon nanotubes in mass ratio 2：1 is dissolved in 15mL solvent naphthas, stirs
Afterwards, then successively 1~2h of ultrasonic disperse, 0.5~1h of magnetic agitation, 1.0~1.5g silicon rubber is subsequently added into, continues magnetic agitation 1
~2h, obtain the composite conducting solution for carbon black/single-walled carbon nanotube/silicon rubber that conductive filler mass fraction is 10~15%；
The parcel of step 6, outer layer conductive structure
The polyurethane fiber for being enclosed with internal layer graphene nano lamella is impregnated in composite conducting solution prepared by step 5
5~10min, it is subsequently placed in vacuum drying chamber at 50~70 DEG C and dries 2~3h, that is, obtain based on the stretchable of polyurethane fiber
Strain transducer.
In outer layer conductive structure, conductive filler is single-walled carbon nanotube and carbon black accounts for the total mass fraction of silicon rubber and needs to control
System.Too small mass fraction percolation threshold can be caused too low or drawing process in polymer filler conductive path fracture；Cross
The conductive filler of big mass fraction then not only can limiting sensor flexibility and also the draftability of composite can be limited, in addition when
When sensor bears strain by a relatively large margin, uniform microstructure possessed by the film or coating in sensor construction or
Configuration of surface can change towards uneven state, cause sensor for the nonlinear response that continuously strains.
Compared with the prior art, beneficial effects of the present invention are embodied in：
1st, the present invention makes conductive filler based on the theoretical combination of hydrogen bond by two kinds of intermolecular methods for forming hydrogen bond
It is attached in polyurethane fiber substrate, that is, passes through the sulfonic group (- SO in poly (sodium 4-styrenesulfonate)3H) and in polyethylene glycol
The mechanism of action of the hydrogen bond formed between hydroxyl (- OH), so as to be wrapped to form in urethane fibers substrate inner layer conductive structure-
Graphene nano lamella；Adhesive attraction strengthens between Hydrogenbond promotes interface between filler substrate, makes conductive filler uniformly tight
In flexible, the ultra-fine polyurethane fiber substrate of close being incorporated in.
2nd, the present invention is using double mode collaboration conductive mechanism：On the one hand it is carbon black and single in outer layer conductive structure
Pipe constitutes stable two-dimentional conductive network by way of point-line connection and line-line connection, and both realize collective effect
Good collaboration conductive mechanism；On the other hand it is the collaboration conduction in laminated construction between inside and outside bilayer conductive structure, i.e. outer layer
The synergy between graphene in conductive structure in carbon black/single-walled carbon nanotube compounded mix and inner layer conductive structure.It is double
Pattern collaboration electric action to have continued good conductive path under slightly wide-range strain, with reference to urethane fibers substrate material
Expect intrinsic excellent specific property, improve electric conductivity, the ductility of sensor, and the Linear Quasi for improving sensor is right.
3rd, strain transducer of the invention possesses high tensility, can apply in range of strain by a relatively large margin, such as hand
The big position of the palm, joint iso-curvature；Be provided simultaneously with preferable sensitivity, available for monitoring the deformation in range of strain by a small margin,
Such as monitor finger tip action, swallowing act and breathing；The linearity of strain-resistance change curves is excellent, linear fit degree
It is splendid；Durability is good, suitable for the reuse of long period.
4th, the present invention realizes the compound of conductive filler layer and urethane fibers using the method for dip-coating, without a large amount of
Using chemical reagent, compared with existing chemical method, process of the invention is green, operation is simple and cost is honest and clean
Valency.Compared with the rigid material sensor such as metal, semiconductor, the present invention makes strain transducer using urethane fibers as substrate
Possess good lightweight flexible, tensile properties and can large-scale integrated characteristic, wearable device can be widely used in.
Brief description of the drawings
Fig. 1 is the external structure schematic diagram of the stretchable strain transducer of the invention based on polyurethane fiber；
Fig. 2 is the cross-sectional structure schematic diagram of the stretchable strain transducer of the invention based on polyurethane fiber；
Fig. 3 is the schematic perspective view of the Hydrogenbond principle of the stretchable strain transducer of the invention based on urethane fiber；
Fig. 4 is the electronic photo of the stretchable strain transducer of the invention based on polyurethane fiber；
Fig. 5 is the scanning electron microscope diagram of the stretchable strain transducer of the invention based on polyurethane fiber；
Fig. 6 is the stress-strain characteristics curve of the stretchable strain transducer of polyurethane fiber of the present invention；
Fig. 7 be the stretchable strain transducer based on polyurethane fiber of the invention the stretching in range of strain by a small margin-
Conductive characteristic curve；
Fig. 8 is that sluggishness of the stretchable strain transducer of the invention based on polyurethane fiber during stretching-release is rung
Answer curve；
Fig. 9 is the stretching-conduction in 100% range of strain of the stretchable strain transducer based on polyurethane fiber of the invention
The fit value of characteristic curve and its corresponding linear fit；
Figure 10 is the electrical stability curve of the stretchable strain transducer of the invention based on polyurethane fiber；
Label in figure：1 is polyurethane fiber, and 2 be inner layer conductive structure, and 3 be outer layer conductive structure, 4 graphene nanometer sheets,
5 be single-walled carbon nanotube, and 6 be carbon black, and 7 be polyethylene glycol, and 8 be poly (sodium 4-styrenesulfonate), and 9 be hydrogen bond.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, following embodiments using technical solution of the present invention as
Under the premise of implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
As shown in figure 1, the structure of the stretchable strain transducer of the invention based on polyurethane fiber is：With polyurethane fiber
1 is matrix, and inner layer conductive structure 2 and outer layer conductive structure 3 are enclosed with successively on the surface of matrix；Wherein inner layer conductive structure is
Graphene nano lamella, outer layer conductive structure are the collaboration conductive mesh network layers of carbon black and single-walled carbon nanotube.It is to make signal in figure
It is apparent, both ends stripping is carried out, three-decker is equal length in practice, i.e., inside and outside layer conductive structure is completely covered poly-
Urethane fiber.
The preparation process of the stretchable strain transducer of the present invention is as follows：
Step 1, prepare Aqueous Solutions of Polyethylene Glycol
Weigh 0.03g polyethylene glycol and be added to 15mL deionized waters, magnetic agitation extremely dissolves at 70 DEG C, then ultrasonic disperse
30min, obtain the aqueous solution for the polyethylene glycol that concentration is 2mg/mL；
Step 2, the surface of polyurethane fiber are modified
With deionized water clean polyurethane fiber to remove surface impurity, it is subsequently placed in air after air drying, then soak
Stain 5min in polyglycol solution prepared by step 1, take out, done again with after deionized water rinsing, being placed in normal temperature in air
It is dry, obtain poly ethyldiol modified polyurethane fiber；
Step 3, the compound aqueous solution for preparing graphene and poly (sodium 4-styrenesulfonate)
0.03g graphene nanometer sheets and 0.03g poly (sodium 4-styrenesulfonate)s are added in 15mL deionized waters and mixed simultaneously
Stir, gained mixed liquor ultrasonic disperse magnetic agitation 30 minutes again after 2 hours, obtain graphene and poly- p styrene sulfonic acid
The compound aqueous solution of sodium；
The parcel of step 4, inner layer conductive structure
Poly ethyldiol modified polyurethane fiber is impregnated in 5min in compound aqueous solution prepared by step 3, takes out juxtaposition
The air drying in air, common repeated impregnations, dry 3~4 times, pass through the sulfonic group-SO in poly (sodium 4-styrenesulfonate)3H with
The hydrogen bonding formed between hydroxyl-OH in polyethylene glycol, i.e., uniformly superscribe graphene on the surface of polyurethane fiber and receive
Rice lamella；
The preparation of step 5, carbon black/single-walled carbon nanotube/silicon rubber composite conducting solution
0.1g carbon blacks and 0.05g single-walled carbon nanotubes are dissolved in 15mL solvent naphthas, after stirring, then surpassed successively
Sound disperses 1h, magnetic agitation 30min, is subsequently added into 1.5g silicon rubber, continues magnetic agitation 1h, obtains carbon black/single
The composite conducting solution of pipe/silicon rubber；
The parcel of step 6, outer layer conductive structure
The polyurethane fiber for being enclosed with internal layer graphene nano lamella is impregnated in composite conducting solution prepared by step 5
5min, it is subsequently placed in vacuum drying chamber at 50 DEG C and dries 3 hours, that is, obtain the stretchable strain sensing based on polyurethane fiber
Device.
As shown in Fig. 2 there is stretchable strain transducer double mode to cooperate with conductive mechanism：On the one hand it is outer layer conductive structure
In 3 conductive mechanism is cooperateed between carbon black 6 and single-walled carbon nanotube 5；On the other hand it is inside and outside bilayer conductive structure in laminated construction
Between collaboration conductive mechanism, i.e. carbon black in outer layer conductive structure and single-walled carbon nanotube compounded mix and inner layer conductive structure
In graphene nanometer sheet between synergy.
Wherein, as shown in Fig. 3 Hydrogenbond schematic diagram, the present invention passes through poly- pair based on the theoretical combination of hydrogen bond
Sulfonic group (- SO in SSS 83H the effect machine of the hydrogen bond 9 formed between the hydroxyl (- OH)) and in polyethylene glycol 7
Reason, so as to be wrapped to form inner layer conductive structure-graphene nanometer sheet 4 in urethane fibers substrate.
The electronic photo of stretchable strain transducer prepared by the present invention as shown in figure 4, in figure 3 kinds of products be followed successively by it is poly-
Urethane fiber, the polyurethane fiber for having wrapped up inner layer conductive structure and the polyurethane fibre for superscribing inside and outside bilayer conductive structure
Dimension (namely stretchable strain transducer of the present invention).As can be seen from the figure the sensor prepared has good flexibility and prolonged
Malleability, can be as the design and making of further wearable device.
Fig. 5 is the scanning electron microscope diagram of the stretchable strain transducer of the invention based on polyurethane fiber, wherein
(a), (b) is the urethane fibers of wrapping inner layer conductive structure graphene nanometer sheet, it can be seen that graphene uniform densification score
It is dispersed in around base material；(c), (d) is sensor surface, that is, is enclosed with the polyurethane fiber of inside and outside bilayer conductive structure, from
It can be seen from the figure that single-walled carbon nanotube and carbon black are good to be dispersed in silicone rubber matrix, and homogeneous close must be wrapped in base
Bottom and endothecium structure.
To test the maximum stretchable limit of the stretchable strain transducer of present invention gained, respectively to pure polyurethane fiber base
Bottom and sample sensor carry out stress-strain test, as a result as shown in Figure 6, it can be seen that urethane fibers substrate and sensor sample
The elongation at break of product is respectively 740% and 350%, and this shows that base material has excellent pliability and draftability, is prepared
Sensor also possess excellent tensility.
Fig. 7 is differently strained lower CYCLIC LOADING and the monitoring during release to sensor resistance change, indicates the device
The dynamic characteristic of part.It is differently strained for what is continuously loaded, excessive change and obvious drift are not found, present various answer
Become lower prominent pliability and repeatability.
Fig. 8 shows sluggish response when sensor bears dynamic load, it can be seen that sensor of the invention has basic
Insignificant sluggish response.
To characterize the linearity performance of the stretchable strain transducer of present invention gained, respectively to gained sensor 10%,
30%th, the strain resistor curve under 50% and 100% strain carries out linear fit, as a result as shown in Figure 9, it can be seen that sensing
Fit value of the device under 10%~100% strain shows that the linearity is excellent more than 0.990.
Figure 10 is under 25% elongation strain intensity, sensor with drawing numbers stability.It is seen that will sensing
After device stretches 2400 times, in 25% range of stretch, resistance is basicly stable, illustrate the repeatability of inventive sensor is prominent,
Excellent durability.
Claims (5)
- A kind of 1. stretchable strain transducer based on polyurethane fiber, it is characterised in that：Described stretchable strain transducer It is using polyurethane fiber as matrix, inner layer conductive structure and outer layer conductive structure is enclosed with successively on the surface of described matrix；Described inner layer conductive structure is graphene nano lamella, and described outer layer conductive structure is carbon black and single-walled carbon nanotube Collaboration conductive mesh network layers.
- 2. the stretchable strain transducer according to claim 1 based on polyurethane fiber, it is characterised in that：It is described to draw There is stretching strain sensor double mode to cooperate with conductive mechanism：On the one hand be in outer layer conductive structure carbon black and single-walled carbon nanotube it Between collaboration conductive mechanism；On the other hand be the collaboration conductive mechanism in laminated construction between inside and outside bilayer conductive structure, i.e., it is outer Work is cooperateed between carbon black and single-walled carbon nanotube compounded mix and the graphene in inner layer conductive structure in layer conductive structure With.
- 3. the stretchable strain transducer according to claim 1 based on polyurethane fiber, it is characterised in that：The poly- ammonia The fracture strength of fat fiber is 0.03~0.09N/tex, elongation at break is 450%~800%.
- 4. the stretchable strain transducer according to claim 1 based on polyurethane fiber, it is characterised in that：It is described to draw The elongation at break of stretching strain sensor reaches 350%, for the strain resistor change curve in 0-100% range of stretch, its The fit value of linear fit is between 0.990-1.
- A kind of 5. preparation method of stretchable strain transducer described in any one in Claims 1 to 4, it is characterised in that bag Include following steps：Step 1, prepare Aqueous Solutions of Polyethylene GlycolWeigh 0.03~0.06g polyethylene glycol and be added to 15mL deionized waters, magnetic agitation extremely dissolves at 60~80 DEG C, then ultrasound Scattered 0.5~1h, obtain the aqueous solution for the polyethylene glycol that concentration is 2~4mg/mL；Step 2, the surface of polyurethane fiber are modifiedWith deionized water clean polyurethane fiber to remove surface impurity, it is subsequently placed in air after air drying, then be impregnated in 5~10min in polyglycol solution prepared by step 1, take out, done again with after deionized water rinsing, being placed in normal temperature in air It is dry, obtain poly ethyldiol modified polyurethane fiber；Step 3, the compound aqueous solution for preparing graphene and poly (sodium 4-styrenesulfonate)By 0.03~0.06g graphene nanometer sheets and 0.03~0.06g poly (sodium 4-styrenesulfonate)s in mass ratio 1：1 is added to It is mixed and stirred for uniformly, 0.5~1h of magnetic agitation again after 2~3h of gained mixed liquor ultrasonic disperse, obtaining in 15mL deionized waters The compound aqueous solution of graphene and poly (sodium 4-styrenesulfonate)；The parcel of step 4, inner layer conductive structurePoly ethyldiol modified polyurethane fiber is impregnated in 5~10min in compound aqueous solution prepared by step 3, takes out juxtaposition The air drying in air, common repeated impregnations, dry 3~4 times, pass through the sulfonic group-SO in poly (sodium 4-styrenesulfonate)3H with The hydrogen bonding formed between hydroxyl-OH in polyethylene glycol, i.e., uniformly superscribe graphene on the surface of polyurethane fiber and receive Rice lamella；The preparation of step 5, carbon black/single-walled carbon nanotube/silicon rubber composite conducting solutionBy 0.1g carbon blacks and 0.05g single-walled carbon nanotubes in mass ratio 2：1 is dissolved in 15mL solvent naphthas, after stirring, 1~2h of ultrasonic disperse, 0.5~1h of magnetic agitation successively again, be subsequently added into 1.0~1.5g silicon rubber, continue magnetic agitation 1~ 2h, obtain the composite conducting solution for carbon black/single-walled carbon nanotube/silicon rubber that conductive filler mass fraction is 10~15%；The parcel of step 6, outer layer conductive structureThe polyurethane fiber for being enclosed with internal layer graphene nano lamella is impregnated in 5 in composite conducting solution prepared by step 5~ 10min, be subsequently placed in vacuum drying chamber at 50~70 DEG C dry 2~3h, that is, obtain based on polyurethane fiber it is stretchable should Become sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229196.1A CN107881768B (en) | 2017-11-29 | 2017-11-29 | Stretchable strain sensor based on polyurethane fibers and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229196.1A CN107881768B (en) | 2017-11-29 | 2017-11-29 | Stretchable strain sensor based on polyurethane fibers and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107881768A true CN107881768A (en) | 2018-04-06 |
| CN107881768B CN107881768B (en) | 2020-04-14 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108613622A (en) * | 2018-05-03 | 2018-10-02 | 南京工业大学 | A method of the monitoring deformation based on Conducting leather |
| CN108797099A (en) * | 2018-07-04 | 2018-11-13 | 广安欧奇仕电子科技有限公司 | A kind of composite and flexible conductive fabric, conductive fabric preparation method and its flexible sensor |
| CN108896217A (en) * | 2018-06-29 | 2018-11-27 | 大连理工大学 | A kind of preparation method and applications of silver nanowires/graphene/fabric carbon composite-type flexible strain gauge |
| CN109199339A (en) * | 2018-09-12 | 2019-01-15 | 合肥工业大学 | A kind of wearable flexibility temperature sensor and preparation method thereof for monitoring body temperature |
| CN110863352A (en) * | 2019-11-29 | 2020-03-06 | 合肥工业大学 | High-tensile flexible strain sensor based on double-component polyurethane wire and preparation method thereof |
| GB2580660A (en) * | 2019-01-21 | 2020-07-29 | Equinor Energy As | Pressure sensor |
| CN112697034A (en) * | 2021-03-25 | 2021-04-23 | 湖南大学 | Flexible strain sensor made of graphene composite material and preparation method of flexible strain sensor |
| CN114739280A (en) * | 2022-03-24 | 2022-07-12 | 苏州大学 | Multi-element nano carbon fiber yarn strain sensor and preparation method thereof |
| CN114739282A (en) * | 2022-04-01 | 2022-07-12 | 郑州大学 | Hydrophobic flexible conductive material, preparation method thereof, flexible sensor and wearable device |
| CN115418860A (en) * | 2022-08-19 | 2022-12-02 | 兰州大学 | Conductive fiber body, preparation method thereof and application thereof in preparing strain sensor |
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| CN106052544A (en) * | 2016-05-18 | 2016-10-26 | 郑州大学 | Flexible wearable strain sensor and preparation method thereof |
| CN106609396A (en) * | 2016-09-30 | 2017-05-03 | 郑州大学 | Elastic electric-conductive nano-fiber yarns and preparation method for same |
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| CN106052544A (en) * | 2016-05-18 | 2016-10-26 | 郑州大学 | Flexible wearable strain sensor and preparation method thereof |
| CN106609396A (en) * | 2016-09-30 | 2017-05-03 | 郑州大学 | Elastic electric-conductive nano-fiber yarns and preparation method for same |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613622A (en) * | 2018-05-03 | 2018-10-02 | 南京工业大学 | A method of the monitoring deformation based on Conducting leather |
| CN108896217A (en) * | 2018-06-29 | 2018-11-27 | 大连理工大学 | A kind of preparation method and applications of silver nanowires/graphene/fabric carbon composite-type flexible strain gauge |
| CN108797099A (en) * | 2018-07-04 | 2018-11-13 | 广安欧奇仕电子科技有限公司 | A kind of composite and flexible conductive fabric, conductive fabric preparation method and its flexible sensor |
| CN109199339A (en) * | 2018-09-12 | 2019-01-15 | 合肥工业大学 | A kind of wearable flexibility temperature sensor and preparation method thereof for monitoring body temperature |
| GB2580660A (en) * | 2019-01-21 | 2020-07-29 | Equinor Energy As | Pressure sensor |
| CN110863352B (en) * | 2019-11-29 | 2021-12-14 | 合肥工业大学 | High-tensile flexible strain sensor based on double-component polyurethane wire and preparation method thereof |
| CN110863352A (en) * | 2019-11-29 | 2020-03-06 | 合肥工业大学 | High-tensile flexible strain sensor based on double-component polyurethane wire and preparation method thereof |
| CN112697034A (en) * | 2021-03-25 | 2021-04-23 | 湖南大学 | Flexible strain sensor made of graphene composite material and preparation method of flexible strain sensor |
| CN114739280A (en) * | 2022-03-24 | 2022-07-12 | 苏州大学 | Multi-element nano carbon fiber yarn strain sensor and preparation method thereof |
| CN114739280B (en) * | 2022-03-24 | 2023-09-01 | 苏州大学 | Multi-element nano carbon fiber yarn strain sensor and preparation method thereof |
| CN114739282A (en) * | 2022-04-01 | 2022-07-12 | 郑州大学 | Hydrophobic flexible conductive material, preparation method thereof, flexible sensor and wearable device |
| CN114739282B (en) * | 2022-04-01 | 2024-04-05 | 郑州大学 | Hydrophobic flexible conductive material, preparation method thereof, flexible sensor and wearable device |
| CN115418860A (en) * | 2022-08-19 | 2022-12-02 | 兰州大学 | Conductive fiber body, preparation method thereof and application thereof in preparing strain sensor |
| CN115418860B (en) * | 2022-08-19 | 2023-10-31 | 兰州大学 | Conductive fiber body, preparation method thereof and application thereof in preparation of strain sensor |
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