Graphene multifunctional fiber as well as preparation method and application thereof

Abstract

The invention relates to a functional fiber, in particular to a graphene multifunctional fiber which is prepared by blending a fiber main body material and a graphene functional master batch, the weight ratio of the fiber main body material is 80%-98%, and the weight ratio of the graphene functional master batch is 2%-20%; the graphene functional master batch comprises the following components in parts by weight: 70-90 parts of a matrix material, 1-15 parts of graphene powder, 1-15 parts of a light-absorbing and heat-insulating material, 5-15 parts of an antibacterial material, 3-15 parts of an antistatic material, 0.1-2 parts of an auxiliary agent and 0.1-10 parts of an anti-mite material. The preparation method of the graphene multifunctional fiber comprises the steps of preparing graphene multifunctional master batch and melt spinning, and the graphene multifunctional fiber can be used for preparing flocculus or plush fabric. The function of the graphene multifunctional fiber does not decline along with use and washing, and the graphene multifunctional fiber has permanent functional characteristics and can be used for short fiber filling, spinning or filament weaving.

Description

Technical Field

[0001] The invention relates to functional fibers, and in particular to a graphene multifunctional fiber and a preparation method and application thereof. Background Art

[0002] At present, with the development of society, consumers' demand for textiles is no longer just warmth and beauty, but more and more demands for textile functions. The same product with multiple functions is becoming more and more popular in the market.

[0003] Graphene is a single-layer carbon atom material peeled off from graphite. It is a single-layer two-dimensional honeycomb lattice structure formed by tightly stacking carbon atoms. It has excellent mechanical, optical and electrical properties and a stable structure. Graphene materials can be applied to textile products, and the spinning or finishing process is combined with textiles to maximize the functions of graphene, such as antibacterial, anti-mite, antistatic, and anti-ultraviolet. For example, Chinese patent CN108385204A discloses a graphene polyester antistatic composite fiber and a preparation method thereof, which uses nylon fiber as the core and is coated with polyester. The nylon fiber contains graphene, and the polyester fiber contains an antistatic agent. The composite yarn has an antistatic effect. The fiber obtained in this way has a single function, and the fiber process of the composite structure is complicated. For example, Chinese patent CN107557900A discloses a method for preparing and using a multifunctional and efficient graphene functional fiber. In the post-finishing process, an anti-mite additive, a functional additive and a graphene-based polyester fiber are compounded together to form an anti-mite and functional graphene polyester composite fiber. Although this method is simple in process and the fiber has multiple composite functions, the function of the fiber is easily degraded or even disappears with the increase in the number of washings during the use of the product. Summary of the invention

[0004] In view of the problem that the functions of existing graphene-containing functional fibers decline or disappear after long-term use, the present invention provides a graphene multifunctional fiber, which is made by blending a fiber main material and a graphene functional masterbatch, wherein the weight of the fiber main material accounts for 80% to 98%, and the weight of the graphene functional masterbatch accounts for 2% to 20%; the graphene functional masterbatch includes the following components in parts by weight: 70 to 90 parts of matrix material, 1 to 15 parts of graphene powder, 1 to 15 parts of light-absorbing and heat-insulating material, 5 to 15 parts of antibacterial material, 3 to 15 parts of antistatic material, 0.1 to 2 parts of auxiliary agent, and 0.1 to 10 parts of anti-mite material.

[0005] Furthermore, the fiber main body material and the matrix material are high molecular polymers of the same material, selected from one of polyester, polyamide, polypropylene or polyolefin, and the masterbatch and the fiber material are of the same material so that there is no incompatibility during the mixing process, so that the functional material is dispersed more evenly. In order to ensure the spinnability, functionality and cost investment of the fiber, the number of layers of the graphene material used in the present invention is less than 10 layers, the shape is sheet-like, and the particle size D50 tested by a laser particle size analyzer is less than 10um, and it is obtained by physical stripping.

[0006] Specifically, the light-absorbing and heat-insulating material is a combination of one or more of antimony-doped tin dioxide, indium tin oxide, tungsten oxide, carbon compound, carbon nanotube or cesium tungsten bronze; the antibacterial material is an organic antibacterial material and / or an inorganic antibacterial material, the organic antibacterial material is polyhexamethylene guanidine, and the inorganic antibacterial agent is a silver-based antibacterial agent, a zinc-based antibacterial agent, or a copper-based antibacterial agent; the auxiliary agent is a coupling agent and / or a dispersant and / or a cross-linking agent, the coupling agent is one of vinyl triethoxysilane coupling agent, triisostearoyl titanate isopropyl coupling agent, aluminum-titanium composite coupling agent, stearate coupling agent or phosphate coupling agent, and the dispersant is one of pentaerythritol stearate or polyethylene wax; the anti-mite material is a pyrethroid.

[0007] The preparation of the graphene multifunctional fiber of the present invention comprises the following steps:

[0008] 1) Preparation of graphene multifunctional masterbatch

[0009] Weigh the components of the graphene multifunctional masterbatch according to weight percentage, place them in a vacuum drying oven respectively, dry them for 8 to 15 hours at a vacuum degree of less than 100 Pa and a temperature of 120 to 180° C., mix the dried graphene powder, light-absorbing and heat-insulating material, antibacterial material, antistatic material, dispersant, and anti-mite material, mix them with the base material, coupling agent, and cross-linking agent under high-speed stirring, mix them evenly, extrude and pelletize them through a twin-screw extruder;

[0010] 2) Preparation of graphene multifunctional fibers

[0011] The fiber main material and the graphene multifunctional masterbatch are weighed according to weight percentage, and the graphene multifunctional filaments or short fibers are prepared by a melt spinning process.

[0012] In step 2), graphene multifunctional fibers with circular, hollow, flat, triangular, trilobal, cross-shaped or double cross-shaped cross sections can be obtained by using different spinning plates.

[0013] The beneficial effects of the present invention are as follows: 1. The graphene multifunctional fiber of the present invention has multiple functions such as light absorption, heat generation and heat preservation, far infrared, antibacterial and anti-mite, antistatic, and high thermal conductivity; 2. The function of the graphene multifunctional fiber of the present invention will not decline with the increase of the number of uses and washings, and has permanent functional characteristics; 3. In the preparation process of the graphene multifunctional masterbatch of the present invention, the graphene material and various functional powders have good dispersibility in the matrix material, which meets the spinning requirements of short fibers and filaments, and has a wide range of uses. It can be used as short fiber filling and spinning, and can also be directly woven as filaments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the hollow cross-sectional structure of the graphene multifunctional fiber of Example 1.

[0015] Figure 2 This is a flat cross-sectional structure of the graphene multifunctional fiber of Example 2.

[0016] Figure 3 This is the circular cross-sectional structure of the graphene multifunctional fiber of Example 3.

[0017] Figure 4 This is a picture of the graphene multifunctional flakes of Application Example 1.

[0018] Figure 5 This is a picture of the graphene multifunctional flannel fabric of Application Example 2.

[0019] Figure 6 This is a picture of the graphene multifunctional sweat cloth of application example 3. DETAILED DESCRIPTION

[0020] The present invention is described below in conjunction with examples, which are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] Example 1

[0022] A graphene multifunctional polyester fiber is prepared by mixing 94wt% polyester chips and 6wt% graphene multifunctional masterbatch and then melt-spinning. The graphene multifunctional masterbatch comprises the following components in parts by weight: 80 parts of polyester powder, 2 parts of graphene material, 1.5 parts of antimony-doped tin dioxide, 5 parts of polyhexamethylene biguanide, 4 parts of silver-based antibacterial agent, 1 part of permethrin, 5 parts of ethoxylated alkylamine antistatic agent, 0.5 part of vinyl triethoxysilane coupling agent, 0.5 part of pentaerythritol stearate, and 0.5 part of BASF ADR4400 crosslinking agent.

[0023] The preparation method comprises the following steps:

[0024] 1. Preparation of graphene multifunctional polyester masterbatch

[0025] The polyester powder, graphene material, antimony-doped tin dioxide, polyhexamethylene biguanide, and silver-based antibacterial agent are dried in a vacuum drying oven respectively, the vacuum degree is controlled to be less than 100 Pa, the temperature is 150° C., and the drying is performed for 12 hours; the dried graphene material, antimony-doped tin dioxide, polyhexamethylene biguanide, silver-based antibacterial agent, permethrin, ethoxylated alkylamine, and pentaerythritol stearate are mixed, stirred at high speed, and then mixed with polyester powder, vinyl triethoxysilane coupling agent, and cross-linking agent; after high-speed stirring and mixing, the mixture is heated and melted by a twin-screw extruder, extruded, cooled, and pelletized to obtain a graphene multifunctional masterbatch;

[0026] 2. Preparation of graphene multifunctional polyester staple fibers

[0027] After the polyester chips and graphene multifunctional masterbatch are dried, they are controlled by a metering pump to enter the spinning machine screw for melting. The temperatures of zones 1 to 5 are controlled to be 280°C, 280°C, 285°C, 290°C, and 285°C, respectively. The melt is ejected through the annular spinneret hole, and the graphene multifunctional polyester staple fibers are obtained by side-blowing drying, bundling, winding, drawing, curling, oiling, cutting, drying, and packaging. The staple fiber specifications are 3D*64mm, and the cross section of the staple fiber is hollow, such as Figure 1 .

[0028] Example 2

[0029] A graphene multifunctional polyester fiber is prepared by mixing 95wt% polyester chips and 5wt% graphene multifunctional masterbatch and then melt-spinning. The graphene multifunctional masterbatch comprises the following components in parts by weight: 79.5 parts of polyester powder, 1.5 parts of graphene material, 2 parts of antimony-doped tin dioxide, 10 parts of polyhexamethylene biguanide, 0.5 parts of permethrin, 5 parts of ethoxylated alkylamine antistatic agent, 0.5 parts of vinyl triethoxysilane coupling agent, 0.5 parts of pentaerythritol stearate, and 0.5 parts of BASF ADR4400 crosslinking agent.

[0030] The preparation method comprises the following steps:

[0031] 1. Preparation of graphene multifunctional polyester masterbatch

[0032] The polyester powder, graphene material, antimony-doped tin dioxide, and polyhexamethylene biguanide are dried in a vacuum drying oven respectively, the vacuum degree is controlled to be less than 100 Pa, the temperature is 150° C., and the drying is performed for 12 hours. The dried graphene material, antimony-doped tin dioxide, polyhexamethylene biguanide, permethrin, ethoxylated alkylamine, and pentaerythritol stearate are mixed, stirred at high speed, and then mixed with polyester powder, vinyl triethoxysilane coupling agent, and crosslinking agent. After being stirred at high speed and mixed evenly, the mixture is heated and melted by a twin-screw extruder, extruded, cooled, and pelletized to obtain a graphene multifunctional masterbatch.

[0033] 2. Preparation of graphene multifunctional polyester filament

[0034] After the polyester chips and graphene multifunctional masterbatch are dried, they are controlled by a metering pump to enter the spinning machine screw for melting. The temperatures of zones 1 to 5 are controlled to be 280°C, 280°C, 285°C, 290°C, and 285°C, respectively. The melt is ejected through the annular spinneret hole, and then dried, oiled, and drawn by side air blowing before winding to obtain graphene multifunctional polyester filaments. The filament specifications are 150D / 228F, the glossiness is bright, and the cross section of the filament is flat, such as Figure 2 .

[0035] Example 3

[0036] A graphene multifunctional polyamide fiber is prepared by mixing 95wt% polyamide slices and 5wt% graphene multifunctional masterbatch and then melt-spinning. The graphene multifunctional masterbatch comprises the following components in parts by weight: 79.7 parts of polyamide powder, 5 parts of graphene material, 0.5 parts of antimony-doped tin dioxide, 8 parts of silver-based antibacterial agent, 0.5 parts of permethrin, 5 parts of ethoxylated lauryl amide antistatic agent, 0.5 parts of vinyl triethoxysilane coupling agent, 0.5 parts of pentaerythritol stearate, and 0.3 parts of BASF ADR4400 crosslinking agent.

[0037] The preparation method comprises the following steps:

[0038] 1. Preparation of graphene multifunctional nylon masterbatch

[0039] The graphene material, antimony-doped tin dioxide, silver-based antibacterial agent, polyhexamethylene biguanide, permethrin, ethoxylated lauryl amide and pentaerythritol stearate are mixed and stirred at high speed, and then mixed with polyamide powder, vinyl triethoxysilane coupling agent and cross-linking agent, and the mixture is stirred at high speed and evenly mixed, and then heated and melted by a twin-screw extruder, extruded, cooled and pelletized to obtain a graphene multifunctional masterbatch;

[0040] 2. Preparation of graphene multifunctional nylon filaments

[0041] After the polyamide slices and graphene multifunctional masterbatch are dried, they are controlled by a metering pump to enter the spinning machine screw for melting. The temperatures of zones 1 to 5 are controlled to be 230°C, 240°C, 245°C, 260°C, and 265°C, respectively. The melt is ejected through the annular spinneret hole, and then dried, oiled, and drawn before winding to obtain graphene multifunctional nylon filaments. The filament specifications are 140D / 196F, the glossiness is bright, and the cross section of the filament is circular, such as Figure 3 .

[0042] Comparative Example 1

[0043] A polyester staple fiber, the preparation method of which is as follows: polyester chips with a melting point of 280°C are dried and then controlled by a metering pump to enter a spinning machine for melt extrusion, the temperatures of zones one to five are controlled to be 280°C, 285°C, 285°C, 290°C and 285°C respectively, the melt is ejected through a circular spinneret hole, and the polyester staple fiber is obtained by side-blowing drying, bundling and winding, drawing, curling, cutting, oiling, cutting, drying and winding.

[0044] Comparative Example 2

[0045] A polyester filament, the preparation method of which is as follows: polyester chips with a melting point of 280°C are dried and then controlled by a metering pump to enter a spinning machine for melt extrusion, the temperatures of zones one to five are controlled to be 280°C, 285°C, 285°C, 290°C and 285°C respectively, the melt is ejected through a circular spinneret hole, and ordinary polyester filaments are obtained through side-blowing drying, oiling and drawing and winding, the filament specification is 150D / 228F, the glossiness is bright, and the cross section of the filament is circular.

[0046] Comparative Example 3

[0047] A nylon filament, the preparation method of which is as follows: polyamide chips with a melting point of 260°C are controlled by a metering pump to enter a spinning machine for melt extrusion, the temperatures of zones one to five are controlled to be 230°C, 240°C, 245°C, 260°C and 265°C respectively, the melt is ejected through a circular spinneret hole, and ordinary nylon filaments are obtained through side-blowing drying, oiling and drawing and winding. The filaments have a specification of 140D / 196F, a glossiness of glossy, and a circular cross section.

[0048] 1. Light absorption and heat preservation test

[0049] According to Japanese standard JIS L 1926, the graphene multifunctional polyester staple fiber of Example 1 and the ordinary polyester staple fiber of Comparative Example 1 were uniformly filled into a 15cm*15cm polyester pongee shell at a filling amount of 400g per square meter, and used as test samples and comparative samples for light absorption and heat preservation tests, respectively, wherein the test samples contained 30% of the staple fiber of Example 1 and 70% of ordinary polyester. Flannel with a gram weight of 280g was woven using Example 2 and Comparative Example 2, and cut into 15cm*15cm samples, respectively, as test samples and comparative samples for light absorption and heat preservation tests, wherein the test samples contained 30% of the filaments of Example 2. A thermocouple temperature sensor was placed at the center of the back of the sample, and the surface of the sample was irradiated with a reflector lamp. The temperature changes of the samples were measured when the light was turned on for 10 minutes and when the light was turned off and left to stand for 10 minutes. The temperature records are shown in Table 1. It can be seen that in the case of light exposure for the first 10 minutes, Examples 1 and 2 heated up faster than Comparative Examples 1 and 2, respectively, and in the last 10 minutes, Examples 1 and 2 cooled down slower than Comparative Examples 1 and 2, respectively, indicating that the sample with 30% of the graphene multifunctional fiber of the present invention can better absorb and store the heat energy of light and has obvious light absorption and heat preservation properties.

[0050] Table 1. Light absorption and heat preservation test

[0051]

[0052]

[0053] 2. Far-infrared thermal reradiation characteristics test

[0054] According to the evaluation standards of the Far Infrared Association of Japan, the graphene multifunctional polyester staple fiber of Example 1 and the ordinary polyester staple fiber of Comparative Example 1 were uniformly filled into a 10cm*7cm polyester pongee shell at a filling amount of 400g per square meter, and were used as test samples and comparative samples for far-infrared heat re-radiation characteristics test, wherein the test sample contained 30% of the staple fiber of Example 1 and 70% of ordinary polyester. Flannel with a gram weight of 280g was woven using Example 2 and Comparative Example 2, and cut into 10cm*7cm samples as test samples and comparative samples for far-infrared heat re-radiation characteristics test, wherein the test sample contained 30% of the filament of Example 2. The test sample and the control sample were placed side by side on a test bench tilted at 45°, and a hot plate (90°C) was placed parallel to each other 15cm in front of the sample. The surface temperatures of the two samples were measured using an infrared imager. As shown in Table 2, the graphene multifunctional polyester fibers of Examples 1 and 2 both have obvious far-infrared thermal properties. The graphene multifunctional fibers of the present invention can re-radiate the far-infrared rays emitted by the human body and have a better warming effect.

[0055] Table 2. Far infrared thermal characteristics test

[0056] Example 1 Example 2 Far infrared heat re-radiation characteristics (ΔT) 1.9℃ 2.2℃

[0057] 3. Antibacterial Test

[0058] According to Japanese standard JIS L1902, the antibacterial properties of the fibers of Examples 1 to 3 and Comparative Examples 1 to 3 were tested, and the results are shown in Table 3. It can be seen that Examples 1 to 3 have very good antibacterial properties before and after washing, because the antibacterial substances are added to the fibers by melt spinning and will not decay with the increase in the number of uses and washings. Comparative Examples 1 to 3 do not have antibacterial properties.

[0059] Table 3. Antibacterial test

[0060]

[0061]

[0062] 4. Thermal conductivity test

[0063] According to the national standard GB / T 10297-2015, the hot wire method for determining the thermal conductivity of non-metallic solid materials, a thermal conductivity tester was used to test the thermal conductivity of the fibers of Examples 1 to 3 and Comparative Examples 1 to 3 respectively at a temperature of 23±3°C and a humidity of 55±5%RH. The thermal conductivity test results are shown in Table 4. The thermal conductivity of ordinary polyester is 0.15 to 0.24 W / m·K, and the thermal conductivity of ordinary nylon is 0.26 to 0.35 W / m·K. The thermal conductivity of the graphene multifunctional polyester staple fibers and filaments of Examples 1 and 2 is significantly reduced, indicating that the addition of functional powders in the fibers and the design of hollow and flat structures give the fibers lower thermal conductivity and better warmth retention. The graphene multifunctional nylon filaments of Example 3 have higher thermal conductivity than ordinary nylon and are suitable for making cool products for summer use.

[0064] Table 4. Thermal conductivity test

[0065]

[0066] 5. Antistatic test

[0067] According to the standard GB / T 14342-2015 chemical fiber staple fiber specific resistance test method, the graphene multifunctional polyester staple fiber and the ordinary polyester staple fiber of Example 1 and Comparative Example 1 were tested for specific resistance, and the two fibers were washed and degreased before the test. The results are shown in Table 5, and it can be seen that the graphene multifunctional polyester staple fiber has a smaller specific resistance and better antistatic property than the ordinary polyester staple fiber.

[0068] Table 5. Specific resistance test

[0069]

[0070] The fibers of Example 2 and Comparative Example 2 were respectively woven into 280 g of flannel fabric, in which the filament content was 50 wt %. The half-life and friction voltage of the samples were tested according to standard JIS L 1094. The test results are shown in Table 6. It can be seen that the graphene multifunctional polyester filaments and nylon filaments of the present invention have better antistatic properties than fabrics woven from ordinary polyester filaments and nylon filaments.

[0071] Table 6. Half-life and friction voltage test

[0072]

[0073] Application Example 1

[0074] A graphene multifunctional flake comprises the graphene multifunctional polyester staple fiber obtained in Example 1, wherein the content of the graphene multifunctional staple fiber is 30wt%, and the flake is formed by opening, mixing and combing. Figure 4 .

[0075] Application Example 2

[0076] A graphene multifunctional flannel, comprising the graphene multifunctional polyester filaments obtained in Example 2, wherein the graphene multifunctional polyester filaments are distributed on the surface of the flannel fabric, accounting for 30wt% by weight, and are woven by a warp knitting machine. Figure 5 .

[0077] Application Example 3

[0078] A graphene multifunctional sweat cloth, comprising the graphene multifunctional nylon filaments obtained in Example 3, wherein the graphene multifunctional nylon filaments account for at least 50wt% of the multifunctional sweat cloth and are woven by a weft knitting machine. Figure 6 .

[0079] 6. Anti-mite test

[0080] According to the standard JIS L 1920 avoidance test method, the polyester staple fiber of comparative example 1 was made into flannel fabrics of the same specifications as those of application example 1, the polyester filament of comparative example 2 was made into flannel fabrics of the same specifications as those of application example 2, and the nylon filament of comparative example 3 was made into sweat cloths of the same specifications as those of application example 3, and anti-mite tests were carried out. The test results are shown in Table 7. It can be seen that the graphene multifunctional fiber of the present invention has a good anti-mite effect.

[0081] Table 7. Anti-mite test

[0082]

[0083]

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A graphene multifunctional fiber, characterized in that: The graphene multifunctional fiber is made by blending a fiber main material and a graphene functional masterbatch, wherein the weight of the fiber main material accounts for 80% to 98%, and the weight of the graphene functional masterbatch accounts for 2% to 20%; the graphene functional masterbatch includes the following components in parts by weight: 70 to 90 parts of matrix material, 1 to 15 parts of graphene powder, 1 to 15 parts of light-absorbing and heat-insulating material, 5 to 15 parts of antibacterial material, 3 to 15 parts of antistatic material, 0.1 to 2 parts of auxiliary agent, and 0.1 to 10 parts of anti-mite material.

2. The graphene multifunctional fiber according to claim 1, characterized in that: The fiber main body material and the matrix material are high molecular polymers of the same material, selected from one of polyester, polyamide, polypropylene or polyolefin.

3. The graphene multifunctional fiber according to claim 1, characterized in that: The light-absorbing and heat-insulating material is a combination of one or more of antimony-doped tin dioxide, indium tin oxide, tungsten oxide, carbon compound, carbon nanotube or cesium tungsten bronze.

4. The graphene multifunctional fiber according to claim 1, characterized in that: The antibacterial material is an organic antibacterial material and / or an inorganic antibacterial material. The organic antibacterial material is polyhexamethylene guanidine. The inorganic antibacterial agent is a silver-based antibacterial agent, a zinc-based antibacterial agent, or a copper-based antibacterial agent.

5. The graphene multifunctional fiber according to any one of claims 1 to 4, characterized in that: The auxiliary agent is a coupling agent and / or a dispersant and / or a cross-linking agent, the coupling agent is one of vinyl triethoxysilane coupling agent, triisostearoyl titanate isopropyl coupling agent, aluminum titanium composite coupling agent, stearate coupling agent or phosphate coupling agent, and the dispersant is one of pentaerythritol stearate or polyethylene wax.

6. The graphene multifunctional fiber according to claim 5, characterized in that: The anti-mite material is pyrethroid.

7. A method for preparing the graphene multifunctional fiber according to claim 6, characterized in that: The following steps are involved: 1) Preparation of graphene multifunctional masterbatch Weigh the components of the graphene multifunctional masterbatch according to weight percentage, place them in a vacuum drying oven respectively, dry them for 8-15 hours at a vacuum degree of <100Pa and a temperature of 120-180°C, mix the dried graphene powder, light-absorbing and heat-insulating material, antibacterial material, antistatic material, dispersant, and anti-mite material, mix them with the base material, coupling agent, and cross-linking agent under high-speed stirring, mix them evenly, extrude and pelletize them through a twin-screw extruder; 2) Preparation of graphene multifunctional fibers The fiber main material and the graphene multifunctional masterbatch are weighed according to weight percentage, and the graphene multifunctional filaments or short fibers are prepared by a melt spinning process.

8. The preparation method according to claim 7, characterized in that: The cross section of the obtained graphene multifunctional fiber is circular, hollow, flat, triangular, trilobal, cross-shaped or double cross-shaped.

9. A graphene multifunctional flake, characterized in that: The graphene multifunctional flakes include the graphene multifunctional short fibers having a hollow cross-section as claimed in claim 8.

10. A graphene multifunctional plush fabric, characterized in that: The graphene multifunctional plush fabric comprises the graphene multifunctional filaments of claim 8 having a triangular or flat cross section.

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