CN112397046A - Sound insulating material and method for producing sound insulating material - Google Patents
Sound insulating material and method for producing sound insulating material Download PDFInfo
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- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- NCLFWRGBSGFNNA-UHFFFAOYSA-N trimethoxy-(3-methyloxiran-2-yl)silane Chemical compound CO[Si](OC)(OC)C1OC1C NCLFWRGBSGFNNA-UHFFFAOYSA-N 0.000 description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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Abstract
The invention provides a sound insulation material and a method for preparing the same, wherein the sound insulation material has a honeycomb structure, the honeycomb structure contains modified graphene and a high polymer material, and the size of the modified graphene is 0.3-50 microns. Therefore, the honeycomb structure and the micro-honeycomb structure of the sound insulation material jointly improve the noise insulation effect of the material.
Description
Technical Field
The invention relates to the field of sound insulation, in particular to a sound insulation material and a method for preparing the sound insulation material.
Background
Automobiles become an essential part of people in life and travel, the amount of the automobiles is gradually increased, but meanwhile, the influence of vehicle noise on the life of people is larger and larger. 75% of the urban noise originates from traffic noise, which is mainly car noise. With the increasing impact of noise on people's life, work and health, sound insulation materials have also become an important concern.
Therefore, the current soundproofing material and the method for preparing the soundproofing material still need to be improved.
Disclosure of Invention
The present invention aims to alleviate or solve at least to some extent at least one of the above mentioned problems.
In one aspect of the invention, the invention provides a sound insulation material, which has a honeycomb structure, wherein the honeycomb structure contains modified graphene and a high polymer material, and the size of the modified graphene is 0.3-50 microns. Therefore, the honeycomb structure and the micro-honeycomb structure of the sound insulation material jointly improve the noise insulation effect of the material.
According to an embodiment of the invention, the honeycomb structure is composed of structural repeating units comprising regular hexagons, squares and cylinders. This further improves the noise isolation effect.
According to the embodiment of the present invention, the honeycomb structure in which the structural repeating unit is a regular hexagon has a honeycomb thickness of 5 to 100 mm. This further improves the noise isolation effect.
According to an embodiment of the present invention, the honeycomb panel thickness of the honeycomb structure in which the structural repeating unit is a regular hexagon is 0.5 to 10 mm. This further improves the noise isolation effect.
According to the embodiment of the invention, the honeycomb structure of which the structural repeating unit is a regular hexagon has the side length of the inclined core of 2-50 mm. This further improves the noise isolation effect.
According to an embodiment of the present invention, the honeycomb structure in which the structural repeating unit is a regular hexagon has a thickness of a honeycomb wall of 0.2 to 4 mm. This further improves the noise isolation effect.
According to the embodiment of the invention, the mass fraction of the modified graphene in the sound insulation material is 0.5-20%. The isolation effect on different frequency band noises is realized by mixing the modified graphene and the high polymer material.
According to an embodiment of the present invention, the polymer material is an olefin or alkyne polymer material. Thus, the performance of the sound insulating material can be further improved by utilizing the intrinsic properties of the polymer material.
In another aspect of the present invention, the present invention provides a method for preparing the aforementioned soundproofing material, the method comprising: mixing the modified graphene and a high polymer material to form a sound insulation material master batch; and (3) carrying out a molding process on the sound insulation material master batch to obtain the honeycomb sound insulation material. Thus, the mixture sound insulation material of the polymer material with the honeycomb structure and the modified graphene is formed through a molding process.
According to an embodiment of the invention, the molding process is injection molding. Thereby, the formation of the sound insulating material having the honeycomb structure is facilitated.
According to the embodiment of the invention, the temperature of the injection molding is 110-150 ℃. Thereby, the formation of the sound insulating material having the honeycomb structure is facilitated.
According to an embodiment of the present invention, the modified graphene is prepared by modifying graphene oxide, and a method for preparing the modified graphene includes: adding the graphene oxide into an acyl chlorination reagent to react to form graphene oxide acyl chloride; adding the graphene oxide acyl chloride into an initiator solution to form a graphene initiator suspension; adding the graphene initiator into a high-molecular monomer solution to form a pre-modified graphene solution; adding a capping agent to the pre-modified graphene solution to form a modified graphene solution. Therefore, the binding force between the modified graphene and the high polymer material is further improved by introducing the high polymer monomer to the surface of the graphene and forming the polymer.
According to an embodiment of the present invention, the acid chlorination reagent comprises at least one of thionyl chloride, phosphorus oxychloride, phosphorus pentachloride, oxalyl chloride, and phosgene. Thus, the graphene oxide is acyl-chlorinated by the acyl chlorination reagent.
According to an embodiment of the invention, the initiator is a free radical polymerization initiator. Thus, the graphene oxide acid chloride is activated by the initiator.
According to an embodiment of the present invention, the polymer monomer solution includes the graphene initiator and the polymer monomer. Therefore, the bonding force between the modified graphene and the high polymer material is further improved.
According to an embodiment of the present invention, the polymer monomer is a polyolefin-based polymer monomer. Therefore, the bonding force between the modified graphene and the high polymer material is further improved.
According to an embodiment of the present invention, the polyolefin-based polymer monomer includes one or more of styrene, vinyl chloride, and acrylamide. Therefore, the bonding force between the modified graphene and the high polymer material is further improved.
According to an embodiment of the invention, the blocking agent contains a silane structure. Therefore, the end capping agent is used for introducing a silane structure on the surface of the graphene while terminating the polymerization reaction of the high molecular monomer.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic flow diagram for preparing an acoustical insulation material according to the present invention;
FIG. 2 shows a schematic partial flow diagram for making an acoustical insulation according to the present invention;
FIG. 3 shows a schematic structural view of an acoustic barrier material according to the present invention;
fig. 4 shows a schematic view of a partial structure of a sound-insulating material according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In one aspect of the invention, the invention provides a sound insulation material, which has a honeycomb structure, wherein the honeycomb structure contains modified graphene and a high polymer material, and the size of the modified graphene is 0.3-50 microns. Therefore, the honeycomb structure and the micro-honeycomb structure of the sound insulation material jointly improve the noise insulation effect of the material. In addition, the sound insulation material formed by mixing the modified graphene and the high polymer material also has the advantages of intrinsic high-strength high modulus of the high polymer material, good thermal stability, low expansion coefficient, light weight and the like.
For convenience of understanding, the following first briefly explains the principle that the transparent organic light emitting display panel can achieve the above beneficial effects: the honeycomb material is composed of a plurality of honeycomb net structures, can effectively control air vibration, and reduces noise transmission generated when vehicles run on roads and engines work. The honeycomb material prepared by mixing and molding the modified graphene and the high polymer material has a unique hole surface combination structure, is uniformly distributed on the hole wall of the honeycomb core layer, and further distributes micro-honeycomb systems with different sizes and intervals, so that more refraction and offset can be carried out on the vibration of air, and the noise can be better isolated. When the size of the honeycomb structure is smaller and the arrangement density is denser, the noise of a low frequency band can be better counteracted; when the size of the honeycomb structure is larger and the arrangement density is wider, the effect of offsetting high-frequency band noise is better. In this application, through the modified graphene who piles up the formation microcellular structure with the layer and macromolecular material hybrid forming forms honeycomb's sound insulation material, the honeycomb network material that has density combination can carry out better offset to high low frequency noise simultaneously, has effectively improved the isolation effect to the noise.
According to some embodiments of the present invention, the structural repeating unit of the honeycomb structure is not particularly limited, for example, the structural repeating unit of the honeycomb structure may be one or more of a regular hexagon, a square, and a cylinder. This further improves the noise isolation effect.
Referring to fig. 3 and 4, according to some embodiments of the present invention, it can be seen that the honeycomb structure has a honeycomb thickness a and a honeycomb core wall thickness d. In a common sandwich structure, for example, a honeycomb core of a honeycomb sandwich structure, the volume of the solid material is only 50% of the total volume. The shape of the honeycomb structure is not particularly limited, and specifically, the shape of the honeycomb structure may be a hexagon. When the honeycomb structure is a hexagon, the maximum distance between two corresponding sides of the hexagon is the honeycomb thickness a. Specifically, when the honeycomb structure is a regular hexagon, the honeycomb thickness a is the distance between two corresponding parallel sides in the regular hexagon. The thickness b of the honeycomb panel is consistent with the height of the inclined edge of the honeycomb core, namely the thickness of the honeycomb panel is consistent with the height of the honeycomb core of any honeycomb structure on the honeycomb panel.
According to some embodiments of the present invention, referring to fig. 3 and 4, the honeycomb thickness a of the honeycomb structure is not particularly limited. Specifically, the honeycomb thickness a of the honeycomb structure may range from 5 to 100 mm. Therefore, the using amount of the sound insulation material and the difficulty of the forming process can be reduced while the sound insulation effect is improved. When the thickness a of the honeycomb structure is less than 5mm, the forming process is complicated, which is not favorable for mass production. When the thickness of the honeycomb structure is larger than 100mm, the number of the honeycomb structures which can be arranged on the unit area is small, and the improvement of the sound insulation effect of the material is not facilitated. According to some embodiments of the present invention, the honeycomb panel thickness b of the honeycomb structure is not particularly limited, and in particular, the honeycomb panel thickness b of the honeycomb structure may range from 0.5 to 10 mm. Therefore, the bearing capacity of the honeycomb panel can be further improved, and the compression stability of the honeycomb structure is improved.
According to some embodiments of the present invention, referring to fig. 3 and 4, the shape of the honeycomb structure is not particularly limited, and in particular, when the honeycomb structure is a regular hexagon, since the regular hexagon is a polygon having six equal sides and six equal internal angles, the core hypotenuse length c of the honeycomb structure may be the length of any one side of the regular hexagon. The length of the core oblique side length c of the honeycomb structure is not particularly limited, and specifically, the core oblique side length c of the honeycomb structure may range from 2 to 50 mm. From this, the accessible is to the adjustment of honeycomb size, when promoting syllable-dividing effect, sets up honeycomb as much as possible on unit area, promotes sound insulation material's overall stability. According to some embodiments of the present invention, the honeycomb core wall thickness d of the honeycomb structure is not particularly limited, and in particular, the honeycomb core wall thickness d of the honeycomb structure may range from 0.2 to 4 mm.
According to some embodiments of the present invention, the mass fraction of the modified graphene in the soundproofing material is not particularly limited, and in particular, the mass fraction of the modified graphene in the soundproofing material may range from 0.5 to 20%. The proportion of the honeycomb structure and the microcellular structure in the sound insulation material is further adjusted by adjusting the mass fraction of the modified graphite in the honeycomb structure, and then the high-low frequency offset performance of the sound insulation material is adjusted. When the mass fraction of the modified graphene in the sound insulation material is less than 0.5%, the distribution density of the modified graphene in the sound insulation material is sparse, an effective microcellular structure cannot be formed, the blocking and refracting power of sound is greatly reduced, and the sound absorption index of the sound insulation material cannot meet the use requirement. When the mass fraction of the modified graphene in the sound insulation material is greater than 20%, the concentration of the modified graphene in the sound insulation material is too high, the modified graphene is agglomerated, and the nano-size effect of the modified graphene is damaged, so that the structural form of the modified graphene is damaged, the whole modified graphene microcellular structure is damaged, and the noise reduction effect is influenced.
According to some embodiments of the present invention, the kind of the polymer material is not particularly limited, and in particular, the polymer material may be selected from commonly used polymer materials based on olefin or alkyne polymerization. The olefin or alkyne polymer material has lower density and better corrosion resistance, and is beneficial to improving the practicability and weather resistance of the sound insulation material in practical application.
In another aspect of the present invention, the present invention provides a method of preparing the foregoing sound insulating material, the method comprising:
mixing the modified graphene and a high polymer material to form a sound insulation material solution; and (3) carrying out a molding process on the sound insulation material solution to obtain the sound insulation material. Thus, the polymer and modified graphene mixture sound insulation material with the honeycomb structure is formed through a molding process.
Specifically, the method comprises the following steps: referring to fig. 1, the method may include the steps of:
s100: mixing modified graphene and high polymer material to form sound insulation material master batch
According to one embodiment of the present invention, the modified graphene is mixed with a high molecular material at this step. The time for mixing and stirring the modified graphene and the polymer material is not particularly limited, and specifically, the time for mixing and stirring the modified graphene and the polymer material may be in a range of 4 to 12 hours.
According to an embodiment of the present invention, a stirring speed of mixing and stirring the modified graphene and the polymer material is not particularly limited, and specifically, the stirring speed of mixing and stirring the modified graphene and the polymer material may be 300 r/min.
S200: obtaining the honeycomb sound insulation material by molding the sound insulation material master batch
According to some embodiments of the invention, the honeycomb-structured acoustic insulation is formed at this step by a molding process. The molding process is not particularly limited, and specifically, the molding process may be injection molding.
According to some embodiments of the present invention, the temperature of injection molding is not particularly limited, and specifically, the temperature range of injection molding may be 110-. The person skilled in the art can adjust the softening temperature of the polymer material selected in the mixing step.
According to some embodiments of the present invention, a modification method of the modified graphene is not particularly limited, and in particular, the modified graphene may be prepared by modifying graphene oxide.
Specifically, the method comprises the following steps: referring to fig. 2, a method of preparing modified graphene may include the steps of:
s110: adding graphene oxide into an acyl chlorination reagent to react to form graphene oxide acyl chloride
According to some embodiments of the present invention, the graphene oxide is added to an acylchlorination reagent at this step to form graphene oxide acylchloride, so that the hydroxyl group on the surface of the graphene oxide is subjected to acylchlorination treatment, replacing the hydroxyl group with a chlorine atom. The kind of the acid chlorination agent is not particularly limited, and specifically, the acid chlorination agent may be at least one of thionyl chloride, phosphorus oxychloride, phosphorus pentachloride, oxalyl chloride, and phosgene.
In order to further improve the reaction effect and reaction rate of the acyl chlorination, the acyl chlorination reagent can be heated after the graphene oxide is added into the acyl chlorination reagent. According to an embodiment of the present invention, the temperature at which the acyl chlorination reagent is heated is not particularly limited, and specifically, the temperature at which the acyl chlorination reagent is heated may be 80 degrees celsius. According to some embodiments of the present invention, the time for heating the acyl chlorination reagent is not particularly limited, for example, the time for heating the acyl chlorination reagent may range from 12h to 24 h.
S120: adding graphene oxide acyl chloride into initiator solution to form graphene initiator suspension
According to some embodiments of the present invention, graphene oxide acyl chloride is added to the initiator solution at this step to form a graphene initiator suspension, for example, the initiator is dissolved in tetrahydrofuran to form an initiator solution, and the graphene oxide acyl chloride is activated by the initiator to improve the activity of the high molecular polymerization reaction on the surface of the graphene oxide suspension.
According to some embodiments of the present invention, the kind of the initiator is not particularly limited, and in particular, the initiator may be a radical polymerization initiator. For example, the initiator may include 4-hydroxy-2, 2,6, 6-tetramethylpiperidine nitroxide radical and p-dimethylaminopyridine.
To further increase the reactivity of the graphene initiator, the graphene initiator suspension may be heated after forming the graphene initiator suspension. According to some embodiments of the present invention, the temperature at which the graphene initiator suspension is heated is not particularly limited, for example, the temperature at which the graphene initiator suspension is heated may range from 70-80 degrees celsius. According to some embodiments of the present invention, the time for heating the graphene initiator suspension is not particularly limited, for example, the time for heating the graphene initiator suspension may range from 36 to 48 hours.
S130: adding a graphene initiator into a high-molecular monomer solution to form a pre-modified graphene solution
According to some embodiments of the present invention, a graphene initiator is added to the polymer monomer solution to form a pre-modified graphene solution at this step, for example, the polymer monomer and cuprous bromide are dissolved in anhydrous toluene to form a polymer monomer solution, and the polymer monomer and the graphene initiator are mixed and reacted to obtain the pre-modified graphene with polymer monomer chains on the surface.
According to some embodiments of the present invention, in order to further improve the uniformity of the polymer chains on the surface of the pre-modified graphene, a first blocking agent may be further included in the polymer monomer solution. In the polycondensation reaction, active functional groups are generally present at both ends of the formed polymer, and when the appropriate functional groups are present, the molecular chain ends of the polymer can still continue to participate in the reaction to grow the chain, and an end-capping agent can be added to eliminate the activity of the end groups to terminate the polymerization reaction. The kind of the first end-capping agent is not particularly limited, and for example, the first end-capping agent may be pentamethyldiethylenetriamine.
According to some embodiments of the present invention, the kind of the polymer monomer is not particularly limited, and for example, the polymer monomer may be a polyolefin-based polymer monomer. Specifically, the high molecular monomer may be one or more of styrene, vinyl chloride and acrylamide.
In order to further increase the reaction rate of the polymerization reaction, the pre-modified graphene solution may be heated after the pre-modified graphene solution is formed. According to an embodiment of the present invention, the temperature at which the pre-modified graphene solution is heated is not particularly limited, and in particular, the temperature at which the pre-modified graphene solution is heated may range from 90 to 100 degrees celsius. According to some embodiments of the present invention, the time for heating the pre-modified graphene solution is not particularly limited, for example, the time for heating the pre-modified graphene solution may range from 3 to 4 days.
S140: adding a capping agent to the pre-modified graphene solution to form a modified graphene solution
According to some embodiments of the present invention, the properties of the polymer chains on the surface of the modified graphene are further adjusted by adding the blocking agent at this step, and other functional groups beneficial to the combination of the modified graphene and the polymer material are introduced.
According to some embodiments of the present invention, the kind of the blocking agent is not particularly limited as long as it contains a silane structure. For example, the blocking agent may be (3-epoxypropyl) trimethoxysilane or (3-aminopropyl) trimethoxysilane. Therefore, silane functional groups can be introduced to the surface of the modified graphene through the segment sealing agent, and the binding force between the modified graphene and the high polymer material is further improved.
The following embodiments are provided to illustrate the present application, and should not be construed as limiting the scope of the present application. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1:
1. preparation of modified graphene Material
1g of graphene oxide 1 micron in size was added to 1LSOCl220ml of anhydrous DMF, refluxing for 20h at 80 ℃, filtering and washing to obtain the graphene oxide acyl chloride.
100ml of anhydrous THF is poured into a round-bottomed flask under nitrogen protection, and 2.5g of 4-hydroxy-2, 2,6, 6-tetramethylpiperidine nitroxide radical and 1.6g of p-dimethylaminopyridine are added and mixed uniformly. Then 1g of graphene oxide acyl chloride is added, and the reflux reaction is carried out for 48 hours at the temperature of 75 ℃. And filtering, washing and drying for later use to obtain the graphene initiator.
Under the protection of argon, 0.15g of purified CuBr, 0.2g of pentamethyldiethylenetriamine, 10g of styrene and 1g of graphene initiator are sequentially added into 50ml of anhydrous toluene. And stirring and refluxing for 4 days at 95 ℃ under the argon protection atmosphere to obtain the pre-modified graphene solution.
1g of (3-epoxypropyl) trimethoxysilane (GPTS) is added into the pre-modified graphene solution, and the mixture is stirred for 1 hour and then quenched by liquid nitrogen. And centrifuging and washing until the filtrate is colorless to obtain the modified graphene.
2. Preparation of Sound insulating Material
Mixing and stirring 50g of the modified graphene and 950g of the polypropylene material for 2 hours at a mixing speed of 300R/min, injection molding the mixed and stirred material at 120 ℃ to form a honeycomb structure, wherein the process parameters of the injection molding honeycomb structure are as follows: the thickness a of the regular hexagon honeycomb is 10mm, the side length c of the inclined honeycomb core is 5mm, the wall thickness of the honeycomb core is 1mm, and the thickness b of the honeycomb panel is 2 mm.
Example 2
The method for preparing the modified graphene material and the process parameters for preparing the sound insulation material in the embodiment are the same as those in embodiment 1, except that the size of the adopted graphene is 5 micrometers.
Example 3
The method for preparing the modified graphene material and the process parameters for preparing the sound insulation material in the embodiment are the same as those in embodiment 1, except that the addition amount of the modified graphene material is 100g, the addition amount of polypropylene is 900g, and the length c of the bevel edge of the honeycomb core is 8 mm.
Example 4
The method for preparing the modified graphene material and the process parameters for preparing the sound insulation material in the embodiment are the same as those in embodiment 1, except that the length c of the bevel edge of the honeycomb core is 8mm, and the thickness of the panel is 1 mm.
Comparative example 1
In this embodiment, the graphene modified material is not added, 950g of polypropylene material is used for injection molding at 120 ℃ to form the honeycomb structure, and the process parameters of the injection molding honeycomb structure are as follows: the thickness a of the regular hexagon honeycomb is 10mm, the side length c of the inclined honeycomb core is 5mm, the wall thickness of the honeycomb core is 1mm, and the thickness b of the honeycomb panel is 2 mm.
The noise attenuation test of the prepared honeycomb material is carried out according to GB/T19889.3.
The test results were as follows:
the result shows that the sound insulation performance of the honeycomb structure sound insulation material prepared by mixing the modified graphene and the high polymer material is superior to that of the sound insulation material which is not doped with the modified graphene and is formed by the high polymer material and has a honeycomb structure. For the sound insulation material formed by mixing the modified graphene and the high polymer material with the same honeycomb structure and the same addition ratio of the modified graphene, the more the number of formed microcellular structures is, the better the noise transmission attenuation performance is.
In the description of the present invention, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, references to the description of "one embodiment," "another embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The sound insulation material is characterized by having a honeycomb structure, wherein the honeycomb structure contains modified graphene and a high polymer material, and the size of the modified graphene is 0.3-50 micrometers.
2. The sound insulating material of claim 1, wherein the honeycomb structure is comprised of structural repeating units comprising regular hexagons, squares, and cylinders.
3. The sound insulating material as claimed in claim 2, wherein the honeycomb structure in which the structural repeating units are regular hexagons has a honeycomb thickness of 5 to 100 mm;
optionally, the honeycomb panel thickness of the honeycomb structure with the structural repeating units being regular hexagons is 0.5-10 mm;
optionally, the honeycomb structure with the structural repeating units in the shape of a regular hexagon has a honeycomb core inclined side length of 2-50 mm;
optionally, the honeycomb structure with the structural repeating units in the shape of regular hexagons has a thickness of the honeycomb core wall of 0.2-4 mm.
4. The sound-insulating material according to claim 1, wherein the modified graphene is present in the sound-insulating material in an amount of 0.5 to 20% by mass.
5. The sound insulating material according to claim 1, wherein the polymer material is an olefin-based or alkyne-based polymer material.
6. A method of making the sound-insulating material of any of claims 1-5, comprising:
mixing the modified graphene and a high polymer material to form a sound insulation material master batch;
and (3) carrying out a molding process on the sound insulation material master batch to obtain the honeycomb sound insulation material.
7. The method of claim 6, wherein the molding process is injection molding.
8. The method as claimed in claim 7, wherein the injection molding temperature is 110-150 ℃.
9. The method according to claim 6, wherein the modified graphene is prepared by modifying graphene oxide, and the method for preparing the modified graphene comprises:
adding the graphene oxide into an acyl chlorination reagent to react to form graphene oxide acyl chloride;
adding the graphene oxide acyl chloride into an initiator solution to form a graphene initiator suspension;
adding the graphene initiator into a high-molecular monomer solution to form a pre-modified graphene solution;
adding a capping agent to the pre-modified graphene solution to form a modified graphene solution.
10. The method of claim 9, wherein the acid chlorination reagent comprises at least one of thionyl chloride, phosphorus oxychloride, phosphorus pentachloride, oxalyl chloride, and phosgene;
optionally, the initiator is a free radical polymerization initiator;
optionally, the polymer monomer solution comprises the graphene initiator and the polymer monomer;
optionally, the polymer monomer is a polyolefin polymer monomer;
preferably, the polyolefin polymer monomer comprises one or more of styrene, vinyl chloride and acrylamide;
optionally, the capping agent contains a silane structure.
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