A fabric composited with aerogel fabric and antistatic fabric

Abstract

The present invention discloses a fabric using aerogel fabric and antistatic fabric composite, comprising: an aerogel fabric layer, the aerogel fabric layer comprising a base fabric and an aerogel coating applied on one surface of the base fabric; an antistatic fabric layer, the antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface, and the modifier is mixed by flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 3‑4:1. The present invention integrates two functional materials, aerogel and graphene, into the fabric to produce an antistatic composite fabric with outstanding thermal insulation performance, good softness and light texture, which helps to achieve the lightness and thinness of down clothing; at the same time, it overcomes the problem that the antistatic performance of the graphene material is easily affected by the environment and is easily damaged by friction when it is applied to the antistatic fabric.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric preparation, and in particular to a fabric obtained by compounding an aerogel fabric with an antistatic fabric. Background Art

[0002] Anti-static fabrics typically incorporate conductive metal materials, such as aluminum foil or copper wire, to create a conductive grid. These conductive materials effectively direct static charges to the ground, neutralizing them and preventing the accumulation and discharge of static electricity. However, these anti-static fabrics are heavy and lack flexibility, making them particularly cumbersome when used in down garments filled with down. As lightweight down jackets become increasingly popular, reducing the weight of functional anti-static down jackets is crucial.

[0003] In order to achieve lightness and thinness, the existing anti-static fabrics can be improved in two aspects:

[0004] (1) Increase the warmth retention of the fabric itself. From this perspective, aerogel, as a nano-scale porous solid material, can significantly improve the warmth retention of down jackets by coating the surface of down jacket fabrics with an aerogel coating, thereby appropriately reducing the amount of down filling and making thin down jackets. At the same time, the fabric can maintain a soft feel, increasing wearing comfort.

[0005] (2) Improve the conductive material that has an anti-static effect. From this perspective, graphene, as a conductive material, has a very low resistivity, which is 5 times that of copper and 10 times that of silicon. This allows electrons to move freely on its surface, providing a solid foundation for anti-static protection. More importantly, the density of graphene is about 2.25 g / cm3, which is much lower than conventional conductive metals such as copper and silver. Therefore, by setting up a graphene fiber layer, the fabric can have excellent anti-static function. However, due to its single-layer structure, graphene is easily disturbed and oxidized by the surrounding environment. In fabric applications, this means that additional protection measures are needed to prevent the performance of graphene from being degraded due to environmental factors. In addition, its response to friction is low. In fabric applications, this means that graphene fabrics are more easily damaged when subjected to friction.

[0006] To this end, the present invention integrates two functional materials, aerogel and graphene, into the fabric to make an anti-static composite fabric, so as to solve the problems of heavy weight and poor softness of existing anti-static fabrics when applied to down clothing, realize the lightness and thinness of the fabric, and overcome some defects of graphene in the application process. Summary of the Invention

[0007] The purpose of the present invention is to provide a fabric that is a composite of aerogel fabric and antistatic fabric, which solves the problems of heavy weight and poor softness of existing antistatic fabrics when applied to down clothing, realizes the lightness and thinness of the fabric, and overcomes some defects of graphene in the application process.

[0008] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0009] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0010] an aerogel fabric layer, the aerogel fabric layer comprising a base fabric and an aerogel coating applied on one surface of the base fabric;

[0011] The antistatic fabric layer comprises a graphene fiber layer bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface. The modifier is a mixture of flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 3-4:1.

[0012] A further improvement is that the base fabric is selected from one of a cotton fiber layer, a bamboo fiber layer, an acrylic fiber layer or a polyester fiber layer.

[0013] A further improvement is that the raw materials for preparing the aerogel coating include 40-80 wt% of a coating matrix, 10-25 wt% of silica aerogel particles and 10-35 wt% of an auxiliary agent.

[0014] A further improvement is that the coating matrix is ​​selected from one or more of bisphenol A epoxy resin, hydroxyethyl methacrylate, acrylic emulsion, polyvinyl acetate emulsion, and melamine formaldehyde resin.

[0015] A further improvement is that the auxiliary agents include toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol and ethanol, and the mass ratio of the auxiliary agents is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2.

[0016] A further improvement is that the method for depositing the modifier on the surface of the graphene oxide fiber is: dispersing the modifier in 2-5 times the mass of ethanol to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane, vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180°, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then drying and curing.

[0017] A further improvement is that the drying and curing refers to: placing the graphene oxide fiber in a pressure environment of 0.2-0.4 MPa, heating it to 120-150°C at a heating rate of 5-8°C / min, and then keeping it warm for 2-5 hours.

[0018] A further improvement is that the preparation method of the graphene oxide fiber is:

[0019] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6-10, and obtaining a spinning solution;

[0020] S2. Preparing fibrils: The spinning solution is passed through a 0.5-1 mm spinneret and injected into a coagulation bath at a rate of 0.2-1 mL / min, followed by drying to obtain fibrils;

[0021] S3, stretching and shaping: placing the raw fibers in a protective atmosphere furnace, controlling the temperature to 200-400° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28-32%;

[0022] S4. Reduction: Take the stretched and shaped original fibers, place them in a reducing agent for reduction for 1-5 hours, wash and dry them to obtain graphene oxide fibers.

[0023] A further improvement is that the reducing agent is selected from one of hydrazine hydrate, hydrobromic acid, sodium borohydride or hydroiodic acid.

[0024] A further improvement is that the specific weaving process is: taking graphene oxide fiber with a twist of 3-4 twists / cm and twisting it into fiber yarn, and weaving the fiber yarn at intervals according to a warp density of 25-30 strands / cm and a weft density of 30-35 strands / cm.

[0025] The beneficial effects of the present invention are:

[0026] (1) The present invention integrates two functional materials, aerogel and graphene, into the fabric to produce an anti-static composite fabric with outstanding thermal insulation performance, good softness and light texture, which helps to achieve the lightness and thinness of down clothing.

[0027] (2) The present invention deposits a modifier composed of flaky nano-titanium carbide and flaky nano-cuprous selenide in a specific ratio on the surface of graphene oxide fibers, thereby reducing the friction coefficient of the fiber surface and improving the oxidation resistance and wear resistance, thereby overcoming the problems that the anti-static performance of graphene materials is easily affected by the environment and is easily damaged by friction when applied to anti-static fabrics. At the same time, it also helps to improve the conductive effect of the graphene fiber layer and enhance its overall anti-static performance. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with specific embodiments. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] 1. Main Materials

[0030] (1) Silica aerogel particles: purchased from Shandong Jiquan Biotechnology Co., Ltd.

[0031] (2) Graphene oxide solution: 100 g of graphite powder and 50 g of sodium nitrate were placed in a glass container, and 2.3 L of concentrated sulfuric acid was slowly added to the container. The mixture was stirred in an ice bath for 2.5 h. 600 g of potassium permanganate was weighed and slowly added to the container. The temperature was maintained at no more than 20 °C and the mixture was stirred for 1 h. The ice bath was then removed and the container was placed in a 35 °C water bath. The mixture was stirred for 2.5 h to obtain a dark brown paste. 4.8 L of hot water was added to the mixture and stirred. After the temperature reached 98 °C, the mixture was quickly transferred to a 98 °C hot water bath and stirred at a constant temperature for 5 min. The hot water bath was then removed and the mixture was transferred to an ordinary water bath and stirred for 30 min. 1.4 L of 50 °C deionized water and 1 L of 30% hydrogen peroxide, the reactant changes from brown to yellow, and after stirring for another 12 minutes, the reactant is taken out and filtered, and the filter cake is washed with 3% hydrochloric acid and centrifuged three times, and then redispersed in deionized water to obtain a brown suspension. After dialysis for 3 days, the graphene oxide solution is obtained.

[0032] (3) Flaky nano-titanium carbide: The ternary layered Ti3AlC2 ceramic powder was refined by high-energy ball milling (ball-to-material mass ratio 10:1, ball milling speed 500 r / min, time 3 h), and then the ball milled product was dried at 50 ° C to obtain Ti3AlC2 ceramic powder with a particle size of about 10 μm. The Ti3AlC2 ceramic powder was then immersed in a 40wt% HF acid solution at a ratio of 5g:100mg, and magnetically stirred for 24 h. It was then centrifuged and washed with deionized water to a pH of 6. Finally, the obtained solid sample was dried at room temperature to obtain flaky nano-titanium carbide.

[0033] (4) Flake-like nano-cuprous selenide: 40 g of selenium powder was placed in a container, and 1 L of hydrazine hydrate and 5 L of deionized water were weighed and added to the container. The container was placed in an ultrasonic cleaner for 20 min and then taken out. Copper foam was ultrasonically washed with deionized water and anhydrous ethanol for 15 min, and soaked in 2.4 mol / L dilute hydrochloric acid for 12 min, then placed in a container and reacted at room temperature for 3 min. The product obtained by the reaction was taken out, separated, and washed with deionized water and anhydrous ethanol, and then dried in a vacuum drying oven at room temperature to obtain flake-like nano-cuprous selenide.

[0034] 2. Implementation of the Experiment

[0035] Example 1

[0036] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0037] The aerogel fabric layer comprises a base fabric (cotton fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0038] The raw materials for preparing the aerogel coating include 40 wt% of bisphenol A epoxy resin, 25 wt% of silica aerogel particles, and 35 wt% of additives, including toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol, and ethanol. The mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2.

[0039] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0040] The modifier is prepared by mixing flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 3:1.

[0041] The preparation method of the graphene oxide fiber is:

[0042] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6, and obtaining a spinning solution;

[0043] S2. Preparing fibrils: The spinning solution is passed through a 0.5 mm spinneret and injected into a coagulation bath at a rate of 0.2 mL / min, followed by drying to obtain fibrils;

[0044] S3, stretching and shaping: placing the raw fibers in a nitrogen protective atmosphere furnace, controlling the temperature to 200° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28%;

[0045] S4. Reduction: Take the stretched and shaped original fibers, place them in a hydrazine hydrate reducing agent for reduction for 1 hour, wash and dry them to obtain graphene oxide fibers.

[0046] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in ethanol twice its mass to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.2 MPa, heating it to 120°C at a heating rate of 5°C / min, and then keeping it warm for 5 hours.

[0047] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 3 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 25 strands / cm and a weft density of 30 strands / cm.

[0048] Example 2

[0049] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0050] The aerogel fabric layer comprises a base fabric (polyester fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0051] The raw materials for preparing the aerogel coating include 60wt% acrylic emulsion, 20wt% silica aerogel particles and 20wt% additives, wherein the additives include toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol and ethanol, and the mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2;

[0052] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0053] The modifier is prepared by mixing flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 3.5:1.

[0054] The preparation method of the graphene oxide fiber is:

[0055] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 8, and obtaining a spinning solution;

[0056] S2. Preparing fibrils: The spinning solution is passed through a 0.8 mm spinneret and injected into a coagulation bath at a rate of 0.7 mL / min, followed by drying to obtain fibrils;

[0057] S3, stretching and shaping: placing the original fiber in an argon protective atmosphere furnace, controlling the temperature to 300° C., and applying tension to the original fiber to make the fiber length stretching rate reach 30%;

[0058] S4. Reduction: The original fibers after stretching and shaping are placed in a hydrobromic acid reducing agent for reduction for 3 hours, washed and dried to obtain graphene oxide fibers.

[0059] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in 3 times the mass of ethanol to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.3 MPa, heating it to 135° C. at a heating rate of 6° C. / min, and then keeping it warm for 3.5 hours.

[0060] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 4 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 28 strands / cm and a weft density of 32 strands / cm.

[0061] Example 3

[0062] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0063] The aerogel fabric layer comprises a base fabric (bamboo fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0064] The raw materials for preparing the aerogel coating include 80 wt% polyvinyl acetate emulsion, 10 wt% silica aerogel particles, and 10 wt% additives, wherein the additives include toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol, and ethanol, and the mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2;

[0065] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0066] The modifier is prepared by mixing flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 4:1.

[0067] The preparation method of the graphene oxide fiber is:

[0068] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 10, and obtaining a spinning solution;

[0069] S2. Preparing fibrils: The spinning solution is passed through a 1 mm spinneret and injected into a coagulation bath at a rate of 1 mL / min, followed by drying to obtain fibrils;

[0070] S3, stretching and shaping: placing the raw fibers in a nitrogen protective atmosphere furnace, controlling the temperature to 400° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 32%;

[0071] S4. Reduction: The original fibers after stretching and shaping are placed in a hydroiodic acid reducing agent for reduction for 5 hours, washed and dried to obtain graphene oxide fibers.

[0072] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in 5 times the mass of ethanol to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.4 MPa, heating it to 150° C. at a heating rate of 8° C. / min, and then keeping it warm for 2 hours.

[0073] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 4 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 30 strands / cm and a weft density of 35 strands / cm.

[0074] Comparative Example 1

[0075] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0076] The aerogel fabric layer comprises a base fabric (cotton fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0077] The raw materials for preparing the aerogel coating include 40 wt% of bisphenol A epoxy resin, 25 wt% of silica aerogel particles, and 35 wt% of additives, including toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol, and ethanol. The mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2.

[0078] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0079] The modifier is prepared by mixing granular nano-titanium carbide (prepared by self-propagating high-temperature synthesis, i.e., titanium powder and carbon powder are uniformly mixed in a mass ratio of 1:1, and plasma ball milling is performed at room temperature under an inert atmosphere using a plasma ball milling device) and granular nano-cuprous selenide (cuprous selenide material purchased from Shanghai Yingxin Laboratory Equipment Co., Ltd., obtained by direct grinding and screening) in a mass ratio of 3:1.

[0080] The preparation method of the graphene oxide fiber is:

[0081] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6, and obtaining a spinning solution;

[0082] S2. Preparing fibrils: The spinning solution is passed through a 0.5 mm spinneret and injected into a coagulation bath at a rate of 0.2 mL / min, followed by drying to obtain fibrils;

[0083] S3, stretching and shaping: placing the raw fibers in a nitrogen protective atmosphere furnace, controlling the temperature to 200° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28%;

[0084] S4. Reduction: Take the stretched and shaped original fibers, place them in a hydrazine hydrate reducing agent for reduction for 1 hour, wash and dry them to obtain graphene oxide fibers.

[0085] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in ethanol twice its mass to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.2 MPa, heating it to 120°C at a heating rate of 5°C / min, and then keeping it warm for 5 hours.

[0086] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 3 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 25 strands / cm and a weft density of 30 strands / cm.

[0087] Comparative Example 2

[0088] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0089] The aerogel fabric layer comprises a base fabric (cotton fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0090] The raw materials for preparing the aerogel coating include 40 wt% of bisphenol A epoxy resin, 25 wt% of silica aerogel particles, and 35 wt% of additives, including toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol, and ethanol. The mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2.

[0091] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0092] Wherein, the modifier is flaky nano-titanium carbide.

[0093] The preparation method of the graphene oxide fiber is:

[0094] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6, and obtaining a spinning solution;

[0095] S2. Preparing fibrils: The spinning solution is passed through a 0.5 mm spinneret and injected into a coagulation bath at a rate of 0.2 mL / min, followed by drying to obtain fibrils;

[0096] S3, stretching and shaping: placing the raw fibers in a nitrogen protective atmosphere furnace, controlling the temperature to 200° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28%;

[0097] S4. Reduction: Take the stretched and shaped original fibers, place them in a hydrazine hydrate reducing agent for reduction for 1 hour, wash and dry them to obtain graphene oxide fibers.

[0098] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in ethanol twice its mass to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.2 MPa, heating it to 120°C at a heating rate of 5°C / min, and then keeping it warm for 5 hours.

[0099] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 3 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 25 strands / cm and a weft density of 30 strands / cm.

[0100] Comparative Example 3

[0101] A fabric composited with aerogel fabric and antistatic fabric, comprising:

[0102] The aerogel fabric layer comprises a base fabric (cotton fiber layer) and an aerogel coating coated on one surface of the base fabric.

[0103] The raw materials for preparing the aerogel coating include 40 wt% of bisphenol A epoxy resin, 25 wt% of silica aerogel particles, and 35 wt% of additives, including toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol, and ethanol. The mass ratio of the additives is toluene: polyethylene glycol: sodium hexametaphosphate: polyvinyl alcohol: ethanol = 1:1.2:0.5:1.5:2.

[0104] The antistatic fabric layer adopts a graphene fiber layer, the graphene fiber layer is bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface.

[0105] Wherein, the modifier is flake-shaped nano-cuprous selenide.

[0106] The preparation method of the graphene oxide fiber is:

[0107] S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6, and obtaining a spinning solution;

[0108] S2. Preparing fibrils: The spinning solution is passed through a 0.5 mm spinneret and injected into a coagulation bath at a rate of 0.2 mL / min, followed by drying to obtain fibrils;

[0109] S3, stretching and shaping: placing the raw fibers in a nitrogen protective atmosphere furnace, controlling the temperature to 200° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28%;

[0110] S4. Reduction: Take the stretched and shaped original fibers, place them in a hydrazine hydrate reducing agent for reduction for 1 hour, wash and dry them to obtain graphene oxide fibers.

[0111] The method for depositing a modifier on the surface of a graphene oxide fiber comprises: dispersing the modifier in ethanol twice its mass to obtain a dispersion, evenly laying the graphene oxide fiber on a filter membrane (the mass ratio of the dispersion to the fiber is 5:1), vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fiber, then turning the graphene oxide fiber 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fiber, and then placing the graphene oxide fiber in a pressure environment of 0.2 MPa, heating it to 120°C at a heating rate of 5°C / min, and then keeping it warm for 5 hours.

[0112] The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist degree of 3 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 25 strands / cm and a weft density of 30 strands / cm.

[0113] In addition, based on Example 1, all other parameters were kept unchanged, and only the mass ratio of the flaky nano-titanium carbide to the flaky nano-cuprous selenide in the modifier was changed to form a comparative example as shown in Table 1 below:

[0114] Table 1: Mass ratio of flaky nano-titanium carbide to flaky nano-cuprous selenide in each comparative example

[0115]

[0116] 3. Performance Testing

[0117] The fabric samples prepared in Examples 1-3 and Comparative Examples 1-7 were taken, and a blank control group (the graphene fiber layer was made of ordinary graphene oxide fiber without deposition of a modifier) ​​was set up, and the following performance tests were performed on them:

[0118] (1) Antioxidant activity test:

[0119] Adopt ABTS free radical decolorization method, first ABTS is dissolved in water and prepared into a solution of 7mM concentration, then the prepared ABTS solution is reacted with potassium persulfate solution with a final concentration of 2.45mM to obtain ABTS free radical positive ions (ABTS +), and then this mixed solution is placed in a dark room for 12 to 16 hours for standby use. The free radical remains stable for more than two days under room temperature conditions in the dark room. Before use, the ABTS + solution is diluted with phosphate buffer solution (0.1M, pH 7.4) to an absorbance of 0.700 ± 0.025 at 734nm, and 10mg of the sample to be tested (the graphene fiber layer obtained by each embodiment and comparative example is selected as the sample here) is added to 10mL ABTS + solution. After 30min, the absorbance value of ABTS + is tested again, and the antioxidant activity of the sample to be tested is calculated using the following formula. The calculation results are statistically obtained in Table 2 below.

[0120] Antioxidant activity = (A2-A1) / A2×100(%)

[0121] Where A2 is the initial absorbance of ABTS·+, and A1 is the absorbance of ABTS·+ after the test sample has been immersed for 30 minutes.

[0122] (2) Wear resistance test:

[0123] Instrument: Y522 type fabric wear resistance tester, conditions: working disc speed of 70r / min, pressure of 500g, abrasive is medium A-150 grinding wheel, test method: a fabric sample (here the sample is the graphene fiber layer prepared in each embodiment and comparative example) is fixed on a working disc with a diameter of 90mm, and the disc rotates at a constant speed of 70r / min. The sample on each sample working disc contacts and moves relative to the two grinding wheels, so that the sample is subjected to multi-directional wear, forming a wear ring on the sample, and calculating the weight loss rate caused by wear for 20min. The calculation results are statistically obtained in Table 3 below.

[0124] (3) Antistatic test:

[0125] According to GB / T 12703.1-2021 "Textiles - Test Methods for Electrostatic Properties - Part 1: Corona Charging Method," the antistatic properties of the samples prepared in each Example and Comparative Example were tested, using the static voltage half-life as the test indicator (Excellent: half-life ≤ 10s; Good: 10 < half-life ≤ 30s; Fair: 30 < half-life ≤ 60s; Poor: > 60s). The test results are summarized in Table 4 below.

[0126] 4. Results Analysis

[0127] (1) Antioxidant activity:

[0128] Table 2: Antioxidant activity results of various examples and comparative examples

[0129]

[0130]

[0131] (2) Wear resistance:

[0132] Table 3: Wear resistance results of various examples and comparative examples

[0133]

[0134] (3) Antistatic properties:

[0135] Table 4: Antistatic results of various examples and comparative examples

[0136] Group half life Group half life Group half life Example 1 Excellent Comparative Example 2 better Comparative Example 6 better Example 2 Excellent Comparative Example 3 better Comparative Example 7 better Example 3 Excellent Comparative Example 4 better Blank control group generally Comparative Example 1 better Comparative Example 5 Excellent

[0137] Analysis: The fabrics prepared by Examples 1-3 of the present invention all performed well in terms of antioxidant activity, wear resistance, and antistatic properties, and all showed different degrees of improvement compared to the control group. In addition, since the flaky nano-titanium carbide and flaky nano-cuprous selenide were replaced with granular ones in Comparative Example 1, the antioxidant activity and wear resistance were significantly reduced, and the antistatic property was also changed from "excellent" to "good"; Comparative Examples 2-3, since only a single component of flaky nano-titanium carbide or flaky nano-cuprous selenide was used, the antioxidant activity and wear resistance were significantly reduced, and the antistatic property was also changed from "excellent" to "good"; Comparative Examples 4-7 adjusted the mass ratio of flaky nano-titanium carbide and flaky nano-cuprous selenide on the basis of Example 1, and found that after adjustment, the antioxidant activity and wear resistance were also inferior to Example 1 to a certain extent.

[0138] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A fabric made of aerogel fabric and antistatic fabric, characterized in that: include: an aerogel fabric layer, the aerogel fabric layer comprising a base fabric and an aerogel coating applied on one surface of the base fabric; The antistatic fabric layer comprises a graphene fiber layer bonded to the other surface of the base fabric, and the graphene fiber layer is woven from graphene oxide fibers with a modifier deposited on the surface. The modifier is a mixture of flaky nano-titanium carbide and flaky nano-cuprous selenide in a mass ratio of 3-4:

1.

2. The composite fabric of aerogel fabric and antistatic fabric according to claim 1, characterized in that: The basic fabric is selected from one of a cotton fiber layer, a bamboo fiber layer, an acrylic fiber layer or a polyester fiber layer.

3. The fabric composited with aerogel fabric and antistatic fabric according to claim 1, characterized in that: The raw materials for preparing the aerogel coating include 40-80 wt% of a coating matrix, 10-25 wt% of silicon dioxide aerogel particles and 10-35 wt% of an auxiliary agent.

4. The composite fabric of aerogel fabric and antistatic fabric according to claim 3, characterized in that: The coating matrix is ​​selected from one or more of bisphenol A epoxy resin, hydroxyethyl methacrylate, acrylic emulsion, polyvinyl acetate emulsion, and melamine formaldehyde resin.

5. The fabric composited with aerogel fabric and antistatic fabric according to claim 3, characterized in that: The auxiliary agents include toluene, polyethylene glycol, sodium hexametaphosphate, polyvinyl alcohol and ethanol, and the mass ratio of the auxiliary agents is toluene:polyethylene glycol:sodium hexametaphosphate:polyvinyl alcohol:ethanol=1:1.2:0.5:1.5:

2.

6. The fabric composited with aerogel fabric and antistatic fabric according to claim 1, characterized in that: The method for depositing a modifier on the surface of graphene oxide fibers comprises: dispersing the modifier in 2-5 times the mass of ethanol to obtain a dispersion, evenly laying the graphene oxide fibers on a filter membrane, vacuum filtering the dispersion to deposit it on one surface of the graphene oxide fibers, then turning the graphene oxide fibers 180 degrees, vacuum filtering the dispersion again to deposit it on the other surface of the graphene oxide fibers, and then drying and solidifying.

7. The composite fabric of aerogel fabric and antistatic fabric according to claim 6, characterized in that: The drying and curing process comprises placing the graphene oxide fiber in a pressure environment of 0.2-0.4 MPa, heating the fiber to 120-150° C. at a heating rate of 5-8° C. / min, and then maintaining the temperature for 2-5 hours.

8. The composite fabric of aerogel fabric and antistatic fabric according to claim 1, characterized in that: The preparation method of the graphene oxide fiber is: S1. Preparing a spinning solution: taking a graphene oxide solution, adjusting the pH to 6-10, and obtaining a spinning solution; S2. Preparing fibrils: The spinning solution is passed through a 0.5-1 mm spinneret and injected into a coagulation bath at a rate of 0.2-1 mL / min, followed by drying to obtain fibrils; S3, stretching and shaping: placing the raw fibers in a protective atmosphere furnace, controlling the temperature to 200-400° C., and applying tension to the raw fibers to make the fiber length stretching rate reach 28-32%; S4. Reduction: Take the stretched and shaped original fibers, place them in a reducing agent for reduction for 1-5 hours, wash and dry them to obtain graphene oxide fibers.

9. The composite fabric of aerogel fabric and antistatic fabric according to claim 8, characterized in that: The reducing agent is selected from one of hydrazine hydrate, hydrobromic acid, sodium borohydride or hydroiodic acid.

10. The composite fabric of aerogel fabric and antistatic fabric according to claim 1, characterized in that: The specific weaving process is: taking graphene oxide fiber and twisting it into fiber yarn with a twist of 3-4 twists / cm, and weaving the fiber yarn at intervals according to a warp density of 25-30 strands / cm and a weft density of 30-35 strands / cm.

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