Graphene oxide modified multifunctional down jacket fabric and preparation method thereof

Abstract

The invention relates to a graphene oxide modified multifunctional down jacket fabric and a preparation method thereof, and belongs to the technical field of functional fabrics. The preparation method comprises the following steps: S1, under the action of laccase, graphene oxide, tannic acid and 4-phenyl-3-thiosemicarbazide are subjected to a reaction in a solvent, and modified graphene oxide is obtained; s2, grinding the modified graphene oxide, a defoaming agent and an adhesive in water to obtain a modified graphene oxide dispersion liquid; s3, a chinlon fabric is soaked in the modified graphene oxide dispersion liquid for two-time soaking and two-time rolling treatment, then pre-drying and baking are conducted, and the graphene oxide modified multifunctional down jacket fabric is obtained. The far infrared emissivity of the graphene oxide modified multifunctional down jacket fabric is 0.89-0.92, the far infrared radiation temperature rise is 2.9-3.3 DEG C, the antibacterial property is higher than 86.9%, the limit oxygen index is 29.1%-30.6%, the dry rubbing color fastness is level 4 or above, and the wet rubbing color fastness is level 3-4 or above.

Description

Technical Field

[0001] The invention belongs to the technical field of functional fabrics, and in particular relates to a multifunctional down jacket fabric modified by graphene oxide and a preparation method thereof. Background Art

[0002] Nylon fabrics are favored for their wear resistance, lightness and warmth, and are widely used in down jacket fabrics. However, nylon fabrics have poor antibacterial properties, average warmth retention, and poor flame retardancy. Therefore, it is of great significance to develop nylon down jacket fabrics with far-infrared warmth retention, antibacterial, and flame retardant functions. Graphene is a unique functional material with good far-infrared antibacterial properties. However, graphene is an inorganic nanopowder with poor dispersion in solution, easy to agglomerate, and poor binding ability with nylon fabrics. Therefore, the use of nanographene to prepare functional nylon fabrics is of great significance for improving the functionality and safety of down jacket fabrics, but there are still great challenges.

[0003] Chinese invention patent CN 114103298 A discloses a graphene antibacterial fabric for down jackets, wherein a graphene antibacterial finishing agent is prepared by using graphene powder, total alkaloids of Zanthoxylum bungeanum or alkaloids of Coptis chinensis, gallic acid or tartaric acid strong acid extractant, epoxy resin adhesive, etc., and then graphene antibacterial polyester fiber or polytetrafluoroethylene fiber is prepared by padding-baking. However, graphene has poor dispersion performance and is very easy to agglomerate. Moreover, when the functional additive is adhered to the functional fiber only by relying on epoxy resin adhesive, a large amount of adhesive is required, which affects the air permeability and feel of the fabric.

[0004] Chinese invention patent CN 113995189 A discloses a method for preparing graphene antibacterial down jacket fabric, which comprises treating graphene with strong acid gallic acid or citric acid, adding an adhesive, and then adhering the modified graphene to viscose fiber or polytetrafluoroethylene fiber through hot pressing, and then blending with natural fiber to obtain graphene antibacterial down jacket fabric. However, gallic acid or citric acid are both weak acids, and there are very few active groups on the surface of graphene, and the reaction performance between them is poor. It is difficult to effectively modify graphene with gallic acid or citric acid, so the dispersion performance of graphene on chemical fiber is poor.

[0005] References (Liu Jiangtao, Tang Haolong, Yang Yuanfeng, et al. Construction and properties of graphene aerogel flame-retardant polyester fabrics [J]. Polymer Materials Science and Engineering, 2022, 38(6): 79-86.) Graphene oxide dispersion was prepared by ultrasonic dispersion, and then the polyester fabric was assembled with silane coupling agent and graphene oxide dispersion in turn. After 5 assemblies, functional polyester fabric was prepared by freeze drying. However, the stability of the graphene oxide dispersion was poor and it was mainly treated by ultrasonic dispersion. In addition, the bonding ability of graphene oxide with polyester fabric was poor, and it was difficult to provide lasting performance only by layer-by-layer deposition.

[0006] Based on the above background, it is still necessary to develop multifunctional down jacket fabrics based on graphene. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a multifunctional down jacket fabric modified with graphene oxide and a preparation method thereof. Firstly, nano graphene oxide is modified by tannic acid and 4-phenyl-3-thiosemicarbazide to obtain modified graphene oxide; then the modified graphene oxide is ground to obtain a modified graphene oxide dispersion; finally, nylon fabric is modified by a padding-baking process to obtain a multifunctional down jacket fabric.

[0008] The first object of the present invention is to provide a method for preparing a multifunctional down jacket fabric modified by graphene oxide, comprising the following steps:

[0009] S1. Under the action of laccase, graphene oxide, tannic acid and 4-phenyl-3-thiosemicarbazide react in a solvent to obtain modified graphene oxide;

[0010] S2, the modified graphene oxide, defoaming agent and binder described in S1 are ground in water to obtain a modified graphene oxide dispersion;

[0011] S3, immersing the nylon fabric into the modified graphene oxide dispersion described in S2 for double dipping and double rolling treatment, and then pre-baking and baking to obtain the multifunctional down jacket fabric modified with graphene oxide.

[0012] In one embodiment of the present invention, in S1, the concentration of the laccase is 3g / L-5g / L, the concentration of the graphene oxide is 40g / L-60g / L, the concentration of the tannic acid is 30g / L-40g / L, and the concentration of the 4-phenyl-3-thiosemicarbazide is 30g / L-40g / L.

[0013] In one embodiment of the present invention, in S1, the reaction temperature is 50°C-60°C, and the reaction time is 5h-6h. The higher the reaction temperature, the more helpful it is to promote the polymerization reaction. However, if the temperature is too high, laccase is likely to lose its activity.

[0014] In one embodiment of the present invention, in S2, the concentration of the modified graphene oxide is 20 g / L-40 g / L, the concentration of the defoaming agent is 5 g / L-10 g / L, and the concentration of the adhesive is 70 g / L-120 g / L.

[0015] In one embodiment of the present invention, in S2, the defoamer is a polyether-modified polysiloxane defoamer, and the adhesive is acrylate.

[0016] In one embodiment of the present invention, in S2, the grinding speed is 600r / min-700r / min, and the grinding time is 3.5h-5h.

[0017] In one embodiment of the present invention, in S2, the average particle size of the modified graphene oxide dispersion is 200nm-300nm.

[0018] In one embodiment of the present invention, in S3, the liquid content of the fabric after the double dipping and double padding treatment is 100%-110%.

[0019] In one embodiment of the present invention, in S3, the pre-baking temperature is 90°C-100°C, and the time is 2min-3min.

[0020] In one embodiment of the present invention, in S3, the baking temperature is 160°C-170°C, and the baking time is 2 min-3 min.

[0021] The second object of the present invention is to provide a multifunctional down jacket fabric modified with graphene oxide prepared by the method described.

[0022] In one embodiment of the present invention, the far-infrared emissivity of the multifunctional down jacket fabric modified by graphene oxide is 0.89-0.92, the far-infrared radiation temperature rise is 2.9°C-3.3°C, the antibacterial performance is higher than 86.9%, the limiting oxygen index is 29.1%-30.6%, the dry friction color fastness is above level 4, and the wet friction color fastness is above level 3-4.

[0023] The technical solution of the present invention has the following advantages compared with the prior art:

[0024] (1) The preparation method of the present invention uses tannic acid and 4-phenyl-3-thiosemicarbazide to modify graphene oxide under the action of laccase to obtain modified graphene oxide. Tannic acid is a natural polyphenol compound. Under the action of laccase, free radicals are formed, and polymerization occurs between the free radicals to generate polytannic acid. In the presence of 4-phenyl-3-thiosemicarbazide, the amino group can participate in the free radical polymerization and promote the polymerization process to generate a high-adhesion polymer. On the one hand, the high-adhesion polymer has high adhesion and high selectivity for the substrate. Although the surface of graphene oxide contains only a small amount of active carboxyl groups, hydroxyl groups and other groups, the high-adhesion polymer can still be generated in situ on the surface of graphene oxide to coat the graphene oxide; on the other hand, the high-adhesion polymer is rich in anionic groups, and there is electrostatic repulsion between the modified graphene oxide. During the grinding process, the electrostatic repulsion of the defoaming agent helps to make the modified graphene oxide uniformly dispersed.

[0025] (2) The surface of the modified graphene oxide described in the present invention is rich in high-adhesion tannic acid structure, which can form covalent bonds with the amino group of nylon fiber, has high affinity with nylon fabric, and with the help of the film-forming effect of the adhesive, the modified graphene oxide is fixed on the nylon fabric, thereby giving the nylon fabric far-infrared, antibacterial, flame retardant multifunctional properties, and good water washing fastness.

[0026] (3) The modified graphene oxide described in the present invention is rich in sulfur / nitrogen-containing groups and has good flame retardant properties. In addition, the graphene oxide has strong charring properties under the action of the sulfur-containing groups. There is a synergistic flame retardant effect between the sulfur-containing groups, the nitrogen-containing flame retardant groups and the graphene oxide, and the flame retardant efficiency is high, thereby making the nylon fabric have good flame retardant properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 This is a particle size distribution diagram of the modified graphene oxide dispersion of Example 1 of the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific embodiments so that those skilled in the art can better understand the present invention and implement it. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. It should be understood that the specific embodiments are only used to explain the present invention, but the embodiments are not intended to limit the present invention.

[0030] In the present invention, unless otherwise explained, technical and scientific terms used in the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs.

[0031] In the present invention, unless otherwise stated, the term "and / or" used in the present invention includes any and all combinations of one or more of the associated listed items.

[0032] In the present invention, unless otherwise stated, the experimental methods used in the embodiments of the present invention are conventional methods unless otherwise stated, and the materials, reagents, etc. used are all commercially available unless otherwise stated.

[0033] In the present invention, unless otherwise specified, the graphene oxide used in the examples of the present invention was purchased from Wuxi Origin Technology Co., Ltd.

[0034] In the present invention, unless otherwise specified, the defoamer used in the embodiments of the present invention is a polyether-modified polysiloxane defoamer purchased from Xingrui (Shandong) Environmental Technology Co., Ltd., model number SGR1832.

[0035] In the present invention, unless otherwise specified, the adhesive used in the embodiments of the present invention is acrylate, purchased from Hefei Polymer Radiation Technology Co., Ltd., model number is hF-901.

[0036] In the present invention, unless otherwise specified, the volume ratio of water to ethanol in the water / ethanol mixed solution used in the embodiments of the present invention is 3:1.

[0037] Example 1

[0038] The multifunctional down jacket fabric modified with graphene oxide of this embodiment and the preparation method thereof specifically include the following steps:

[0039] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase, tannic acid and 4-phenyl-3-thiosemicarbazide, reacting at 55° C. for 5.5 h, centrifuging, washing and drying to obtain modified graphene oxide; wherein the amount of laccase is 4 g / L, the amount of graphene oxide is 50 g / L, the amount of tannic acid is 35 g / L, and the amount of 4-phenyl-3-thiosemicarbazide is 35 g / L;

[0040] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 650r / min for 3.5h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 250nm; wherein the amount of modified graphene oxide is 30g / L, the amount of defoamer is 8g / L, the amount of binder is 100g / L, and the amount of zirconium beads is 70g / L;

[0041] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 105%, and then pre-bake at 95° C. for 2.5 min and bake at 165° C. for 2.5 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0042] Example 2

[0043] The multifunctional down jacket fabric modified with graphene oxide of this embodiment and the preparation method thereof specifically include the following steps:

[0044] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase, tannic acid and 4-phenyl-3-thiosemicarbazide, reacting at 50° C. for 6 h, centrifuging, washing and drying to obtain modified graphene oxide; wherein the amount of laccase is 3 g / L, the amount of graphene oxide is 40 g / L, the amount of tannic acid is 30 g / L, and the amount of 4-phenyl-3-thiosemicarbazide is 30 g / L;

[0045] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 600r / min for 4h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 200nm; wherein the amount of modified graphene oxide is 20g / L, the amount of defoamer is 5g / L-10g / L, the amount of binder is 70g / L, and the amount of zirconium beads is 60g / L;

[0046] S3. Immerse the nylon 6 fabric in the modified graphene oxide dispersion for double dipping and double rolling treatment, with the liquid volume being 100%, and then pre-bake at 90° C. for 3 min and bake at 160° C. for 3 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0047] Example 3

[0048] The multifunctional down jacket fabric modified with graphene oxide of this embodiment and the preparation method thereof specifically include the following steps:

[0049] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase, tannic acid and 4-phenyl-3-thiosemicarbazide, reacting at 60° C. for 5 h, centrifuging, washing and drying to obtain modified graphene oxide; wherein the amount of laccase is 5 g / L, the amount of graphene oxide is 60 g / L, the amount of tannic acid is 40 g / L, and the amount of 4-phenyl-3-thiosemicarbazide is 40 g / L;

[0050] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 700r / min for 3h, then adding binder and continuing grinding for 0.5h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 300nm; wherein the amount of modified graphene oxide is 40g / L, the amount of defoamer is 10g / L, the amount of binder is 120g / L, and the amount of zirconium beads is 80g / L;

[0051] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 110%, and then pre-bake at 100° C. for 2 min and bake at 170° C. for 2 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0052] Comparative Example 1

[0053] The method is basically the same as Example 1, except that tannic acid is replaced with terephthalic acid when modifying graphene oxide, and specifically includes the following steps:

[0054] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase, terephthalic acid and 4-phenyl-3-thiosemicarbazide, reacting at 55° C. for 5.5 h, centrifuging, washing and drying to obtain modified graphene oxide; wherein the amount of laccase is 4 g / L, the amount of graphene oxide is 50 g / L, the amount of terephthalic acid is 35 g / L, and the amount of 4-phenyl-3-thiosemicarbazide is 35 g / L;

[0055] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 650r / min for 3.5h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 250nm; wherein the amount of modified graphene oxide is 30g / L, the amount of defoamer is 8g / L, the amount of binder is 100g / L, and the amount of zirconium beads is 70g / L;

[0056] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 105%, and then pre-bake at 95° C. for 2.5 min and bake at 165° C. for 2.5 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0057] Comparative Example 2

[0058] The method is basically the same as Example 1, except that tannic acid is not used to modify graphene oxide, and specifically comprises the following steps:

[0059] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase and 4-phenyl-3-thiosemicarbazide, reacting at 55° C. for 5.5 h, centrifuging, washing, and drying to obtain modified graphene oxide; wherein the amount of laccase is 4 g / L, the amount of graphene oxide is 50 g / L, and the amount of 4-phenyl-3-thiosemicarbazide is 35 g / L;

[0060] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 650r / min for 3.5h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 250nm; wherein the amount of modified graphene oxide is 30g / L, the amount of defoamer is 8g / L, the amount of binder is 100g / L, and the amount of zirconium beads is 70g / L;

[0061] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 105%, and then pre-bake at 95° C. for 2.5 min and bake at 165° C. for 2.5 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0062] Comparative Example 3

[0063] The method is basically the same as Example 1, except that when modifying graphene oxide, 4-phenyl-3-thiosemicarbazide is replaced with tetramethylthiourea, which specifically includes the following steps:

[0064] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase, tannic acid and tetramethylthiourea, reacting at 55° C. for 5.5 h, centrifuging, washing and drying to obtain modified graphene oxide; wherein the amount of laccase is 4 g / L, the amount of graphene oxide is 50 g / L, the amount of tannic acid is 35 g / L, and the amount of tetramethylthiourea is 35 g / L;

[0065] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 650r / min for 3.5h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 250nm; wherein the amount of modified graphene oxide is 30g / L, the amount of defoamer is 8g / L, the amount of binder is 100g / L, and the amount of zirconium beads is 70g / L;

[0066] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 105%, and then pre-bake at 95° C. for 2.5 min and bake at 165° C. for 2.5 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0067] Comparative Example 4

[0068] The method is basically the same as Example 1, except that 4-phenyl-3-thiosemicarbazide is not used to modify graphene oxide, and specifically comprises the following steps:

[0069] S1. Dispersing graphene oxide in a mixed solution of water / ethanol, then adding laccase and tannic acid, reacting at 55° C. for 5.5 h, centrifuging, washing, and drying to obtain modified graphene oxide; wherein the amount of laccase is 4 g / L, the amount of graphene oxide is 50 g / L, and the amount of tannic acid is 35 g / L;

[0070] S2, adding modified graphene oxide and defoamer into water, grinding at a speed of 650r / min for 3.5h, then adding binder and continuing grinding for 1h, filtering out zirconium beads, and obtaining a modified graphene oxide dispersion having an average particle size of about 250nm; wherein the amount of modified graphene oxide is 30g / L, the amount of defoamer is 8g / L, the amount of binder is 100g / L, and the amount of zirconium beads is 70g / L;

[0071] S3. Immerse the nylon 6 fabric in a modified graphene oxide dispersion for double dipping and double rolling treatment, with a liquid volume of 105%, and then pre-bake at 95° C. for 2.5 min and bake at 165° C. for 2.5 min to obtain a multifunctional down jacket fabric modified with graphene oxide.

[0072] Comparative Example 5

[0073] The method is basically the same as Example 1, except that graphene oxide is directly used to modify the nylon 6 fabric.

[0074] Comparative Example 6

[0075] The method is basically the same as Example 1, except that the nylon 6 fabric is not modified (unmodified down jacket fabric).

[0076] Test Example 1

[0077] The particle size distribution of the modified graphene oxide dispersion prepared in Example 1 was tested using a NKT-N9 nanometer laser particle size analyzer (Shandong Naikete Analytical Instrument Co., Ltd.). The results are as follows: Figure 1 As shown, from Figure 1 It can be seen that the average particle size of the modified graphene oxide dispersion is about 330 nm and is uniformly distributed.

[0078] Test Example 2

[0079] The far infrared properties of the multifunctional down jacket fabric (modified down jacket fabric) and the unmodified down jacket fabric (unmodified nylon 6 fabric) modified with graphene oxide obtained in Examples 1-3 and Comparative Examples 1-6 were tested:

[0080] Far infrared performance: Refer to GB / T 30127-2013 "Testing and evaluation of far infrared performance of textiles" to test the far infrared emissivity and heating performance of unmodified down jacket fabrics and modified down jacket fabrics;

[0081] Antibacterial performance: Refer to GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3: Oscillation method" standard to test the antibacterial rate of unmodified down jacket fabrics and modified down jacket fabrics;

[0082] Flame retardant performance: Refer to GB / T 5454-1997 "Textile Combustion Performance Test Oxygen Index Method" standard to test the limiting oxygen index of unmodified down jacket fabrics and modified down jacket fabrics;

[0083] Washing resistance: Refer to GB / T3920-2008 "Textile Color Fastness Test-Rubbing Color Fastness" and "GB251-1995 Grey Sample Scale for Staining Assessment" to test the rubbing color fastness of unmodified down jacket fabrics and modified down jacket fabrics;

[0084] Table 1 shows the final measured properties of unmodified down jacket fabric and modified down jacket fabric:

[0085] Table 1

[0086]

[0087] As can be seen from Table 1, the modified down jacket fabric has excellent far-infrared emission and far-infrared heating properties, antibacterial properties, flame retardant properties, and good rubbing color fastness, indicating that the modified graphene oxide can be evenly dispersed on the nylon fabric and produce a good combination;

[0088] By comparing Example 1 and Comparative Example 1, it can be seen that when terephthalic acid and 4-phenyl-3-thiosemicarbazide are used to modify graphene oxide, the far-infrared performance, antibacterial performance and flame retardant performance of the modified nylon 6 fabric are reduced, and the color fastness to friction is reduced. This is because the reaction of terephthalic acid and 4-phenyl-3-thiosemicarbazide cannot generate a high-adhesion polymer, and the modification of graphene oxide cannot be achieved;

[0089] Comparison of Example 1 and Comparative Example 2 shows that when only 4-phenyl-3-thiosemicarbazide is used to modify graphene oxide, the far-infrared performance, antibacterial performance and flame retardant performance of the modified nylon 6 fabric are reduced, and the color fastness to friction is reduced. This is because 4-phenyl-3-thiosemicarbazide cannot achieve the modification of graphene oxide;

[0090] Comparison of Example 1 and Comparative Example 3 shows that when graphene oxide is modified by tannic acid and tetramethylthiourea, the far-infrared performance, antibacterial performance and flame retardant performance of the modified nylon 6 fabric are reduced, and the color fastness to friction is reduced. This is because tetramethylthiourea cannot combine with the high-adhesion polymer and graphene oxide, resulting in a significant reduction in flame retardant performance;

[0091] Comparison of Example 1 and Comparative Example 4 shows that when only tannic acid is used to modify graphene oxide, the far infrared performance and antibacterial performance of the modified nylon 6 fabric are reduced, the color fastness to friction is reduced, and the flame retardant performance is significantly reduced. This is because the flame retardant efficiency of tannic acid-modified graphene oxide is low;

[0092] Comparison of Example 1 and Comparative Example 5 shows that the far infrared performance, antibacterial performance and flame retardant performance of the modified nylon 6 fabric are all reduced. This is because although graphene oxide has good far infrared and antibacterial properties, the dispersion performance of graphene oxide powder in water is poor, and there are very few reactive groups on the surface, which makes it difficult to combine with nylon 6 fabric. Therefore, the nylon 6 fabric is directly modified by graphene oxide, and the water washing resistance is poor. In addition, the functionality of the modified down jacket fabric of Comparative Example 5 is reduced, and the dry friction fastness is level 3 and the wet friction fastness is level 2. This is because the dispersion performance of graphene oxide is poor, and it is only fixed to the nylon 6 fabric by the action of acrylic adhesive.

[0093] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A method for preparing a multifunctional down jacket fabric modified with graphene oxide, characterized in that: The following steps are involved: S1. Under the action of laccase, graphene oxide, tannic acid and 4-phenyl-3-thiosemicarbazide react in a solvent to obtain modified graphene oxide; S2, the modified graphene oxide, defoaming agent and binder described in S1 are ground in water to obtain a modified graphene oxide dispersion; S3, immersing the nylon fabric into the modified graphene oxide dispersion described in S2 for double dipping and double rolling treatment, and then pre-baking and baking to obtain the multifunctional down jacket fabric modified with graphene oxide.

2. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S1, the concentration of the laccase is 3g / L-5g / L, the concentration of the graphene oxide is 40g / L-60g / L, the concentration of the tannic acid is 30g / L-40g / L, and the concentration of the 4-phenyl-3-thiosemicarbazide is 30g / L-40g / L.

3. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S1, the reaction temperature is 50°C-60°C, and the reaction time is 5h-6h.

4. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S2, the concentration of the modified graphene oxide is 20 g / L-40 g / L, the concentration of the defoaming agent is 5 g / L-10 g / L, and the concentration of the adhesive is 70 g / L-120 g / L.

5. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S2, the defoamer is a polyether-modified polysiloxane defoamer, and the adhesive is acrylate.

6. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S2, the grinding speed is 600r / min-700r / min, and the grinding time is 3.5h-5h.

7. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S3, the liquid content of the fabric after the double dipping and double padding treatment is 100%-110%.

8. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S3, the pre-baking temperature is 90°C-100°C, and the time is 2min-3min.

9. The method for preparing the multifunctional down jacket fabric modified by graphene oxide according to claim 1, characterized in that: In S3, the baking temperature is 160°C-170°C, and the baking time is 2min-3min.

10. A multifunctional down jacket fabric modified with graphene oxide prepared by the method according to any one of claims 1 to 9.

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