A heat-conducting cool-feeling thin-layer fabric, a preparation method and application thereof

Abstract

The application relates to the technical field of fabric finishing, and discloses a heat-conducting cool-feeling thin-layer fabric, a preparation method and application. The carboxyl-terminated modified hyperbranched polyester of a hydrophilic type is prepared, the heat-conducting material alkenyl-modified nano boron nitride and the polyether type moisture absorption and sweat releasing finishing agent are collectively configured to form a finishing liquid, the thin-layer fabric is finished by using a mercapto-alkene click reaction, the thin-layer fabric is endowed with excellent heat-conducting performance, moisture absorption and sweat releasing performance, and the cool-feeling effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of fabric finishing technology, specifically to a thermally conductive and cooling thin-layer fabric, its preparation method, and its application. Background Technology

[0002] The thermal and moisture comfort properties of fabrics are crucial for improving clothing comfort. In hot summer environments or after exercise, the human body tends to sweat profusely, so fabrics should have good moisture absorption, perspiration wicking, and heat dissipation properties. Moisture-wicking and cooling textiles provide a cooling sensation, rapidly lowering the body's surface temperature in hot environments to achieve a cooling feeling and enhance clothing comfort.

[0003] When the ambient temperature is slightly lower than skin temperature, fabrics with good thermal conductivity can quickly transfer heat from the skin to the fabric and dissipate it into the environment, giving the body a cooling sensation. Therefore, thermal conductivity is fundamental to a fabric's cooling function. Cooling finishes refer to surface modifications of fabrics, adding cooling agents containing inorganic or organic cooling factors to increase the thermal conductivity and heat dissipation of textiles, thus providing a cooling sensation and improving wearing comfort. Based on the principle behind the cooling function, finishing agents can be divided into three categories: first, moisture-wicking finishing to improve the moisture absorption and wicking properties of synthetic fibers, keeping the fabric dry and comfortable; second, adding inorganic nanoparticles to the finishing agent to enhance the thermal conductivity of the fabric; and third, increasing the specific heat capacity of the fabric, such as by using phase change materials, to give the fabric a two-way temperature regulation function.

[0004] However, existing cooling finishing techniques often focus on achieving a single function, and there is still room for improvement in the balance between durability, comfort, and functionality of the finished fabric. Therefore, developing a fabric finishing method that combines excellent thermal conductivity, moisture wicking properties, and long-lasting finishing effects has significant practical application value. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thermally conductive and cooling thin-layer fabric, its preparation method, and its application. The invention involves preparing a hydrophilic end-carboxyl-modified hyperbranched polyester, which is then combined with a thermally conductive alkenyl-modified nano-boron nitride and a polyether-type moisture-wicking finishing agent to form a finishing liquid. The mercapto-alkene click reaction is used to finish the mercapto-modified thin-layer fabric, endowing it with excellent thermal conductivity and moisture-wicking properties, thereby achieving a cooling effect.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A method for preparing a thermally conductive and cooling thin-layer fabric includes the following steps:

[0008] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react. After the reaction is completed, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and continue the reaction. After the reaction is completed, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and react again. After the reaction is completed, purify to obtain hyperbranched polyester.

[0009] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat, add maleic anhydride, react, and after the reaction is complete, purify to obtain carboxyl-terminated modified hyperbranched polyester.

[0010] Step (3): Heat polyethylene glycol and add isocyanate methacrylate dropwise. After the addition is complete, the reaction is carried out. After the reaction is completed, the temperature is lowered to obtain the moisture-wicking finishing agent.

[0011] A finishing solution is prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator, and 2-butanone.

[0012] Step (4): Immerse the thin fabric in an aqueous sodium hydroxide solution for pretreatment. After pretreatment, remove the fabric, wash and dry it to obtain the pretreated thin fabric.

[0013] Mix 3-mercaptopropyltriethoxysilane, ethanol, and water, adjust the pH value, and stir to obtain a mercaptosilane finishing solution; immerse the pretreated thin-layer fabric in the mercaptosilane finishing solution, remove it after immersion, and dry it to obtain a mercapto-modified thin-layer fabric.

[0014] The thiol-modified thin-layer fabric is immersed in a finishing solution and reacted. After the reaction is complete, it is removed, washed, and dried to obtain a thermally conductive and cooling thin-layer fabric.

[0015] Preferably, in step (1), the mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16-17:1.3-1.4:0.08-0.1:21-22:0.1-0.12:43-45:0.2-0.22.

[0016] Preferably, in step (1), the conditions for reaction, continued reaction, and second reaction are: reaction in a nitrogen atmosphere at a temperature of 140-170℃ for 2-3 hours, and after the reaction is completed, the pressure is reduced to 1-1.5kPa for polycondensation reaction for 2-3 hours.

[0017] Preferably, in step (1), the purification operation includes: adding acetone to dissolve and disperse, adding cyclohexane to precipitate, filtering to obtain the precipitate, repeating the dissolution, precipitation, and filtration operation once, and drying.

[0018] Preferably, in step (2), the mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:1.5-3:60-80; the reaction conditions are: reaction at 85-95℃ for 4-5 hours in a nitrogen atmosphere.

[0019] Preferably, in step (2), the purification operation includes: removing the solvent N,N-dimethylformamide by rotary evaporation, dissolving and dispersing with acetone, precipitating with diethyl ether, filtering to obtain the precipitate, and drying.

[0020] Preferably, in step (3), the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2; the reaction conditions are: reaction at 60-70℃ for 3-5 hours.

[0021] Preferably, in step (3), the mass ratio of moisture-wicking finishing agent, end-carboxyl hyperbranched polyester, alkenyl modified nano boron nitride, photoinitiator, and 2-butanone is 10-15:5-10:1-5:0.5-1:80.

[0022] Preferably, in step (3), the alkenyl-modified boron nitride nanoparticles are prepared by the following steps:

[0023] S1. Mix 1-pyrene methanol and dichloromethane, add a dichloromethane solution of acryloyl chloride dropwise, react, and after the reaction is complete, purify to obtain methyl 1-pyrene acrylate;

[0024] S2. Mix boron nanonitride and tetrahydrofuran, disperse by ultrasonication, add methyl 1-pyrene acrylate and stir to dissolve, continue ultrasonic dispersion, centrifuge, wash and dry to obtain alkenyl-modified boron nanonitride.

[0025] Preferably, in step (3), when preparing alkenyl-modified nano boron nitride, the molar ratio of 1-pyrene methanol, triethylamine, and acryloyl chloride in S1 is 13:16-20:15-20; the mass ratio of acryloyl chloride to dichloromethane in the dichloromethane solution of acryloyl chloride is 1:5-8; and the reaction conditions are: stirring at 0-5℃ for 6-10 h.

[0026] Preferably, in step (3), when preparing alkenyl-modified nano boron nitride, the purification operation in S1 is as follows: filter the filtrate, wash it with water and saturated sodium bicarbonate aqueous solution in sequence, separate the organic phase, remove water with anhydrous sodium sulfate, remove dichloromethane by rotary evaporation, and purify by column chromatography; wherein the eluent is prepared by mixing petroleum ether and ethyl acetate in a volume ratio of 5-10:1.

[0027] Preferably, in step (3), when preparing alkenyl-modified boron nitride nanoparticles, the mass ratio of boron nitride nanoparticles to methyl 1-pyrene acrylate in S2 is 3:0.8.

[0028] Preferably, in step (4): the bath ratio of the thin fabric to the sodium hydroxide aqueous solution is 30-50:1, and the concentration of the sodium hydroxide aqueous solution is 150-200g / L; the pretreatment conditions are: pretreatment at 70-80℃ for 30-40min.

[0029] Preferably, in step (4): the solid-liquid ratio of 3-mercaptopropyltriethoxysilane, ethanol, and water is 3-5:80:20; the pH value of the mercaptosilane finishing solution is 3-4; the bath ratio of the pretreated thin fabric to the mercaptosilane finishing solution is 50:1; and the immersion conditions are: immersion at room temperature for 3-5 minutes.

[0030] Preferably, in step (4), the ratio of the mercapto-modified thin-layer fabric to the finishing solution is 20-30:1; the reaction conditions are: click reaction at room temperature in ultraviolet light with a wavelength of 365nm for 1-3 hours.

[0031] Preferably, a thermally conductive and cooling thin-layer fabric is prepared using the method described above.

[0032] Preferably, an application of a thermally conductive and cooling thin-layer fabric as described above in a fabric.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] This invention prepares a hydrophilic end-carboxyl-modified hyperbranched polyester, which is then combined with thermally conductive nano-boron nitride and a polyether-type moisture-wicking finishing agent to form a finishing solution. The solution is then used to finish the thiol-modified thin-layer fabric using a thiol-olefin click reaction, thereby endowing the thin-layer fabric with excellent thermal conductivity and moisture-wicking properties, thus achieving a cooling effect.

[0035] This invention uses 2,2-dimethylolpropionic acid as a monomer and pentaerythritol as a core, and polymerizes it under the action of p-toluenesulfonic acid catalyst to synthesize a hyperbranched polyester containing terminal hydroxyl groups. Then, maleic anhydride is used to graft the hyperbranched polyester to form a carboxyl-terminated modified hyperbranched polyester with carbon-carbon double bonds. The carboxyl group, as the terminal group, improves the hydrophilicity of the hyperbranched polyester, while the carbon-carbon double bond, as a reactive group, further participates in the mercapto-alkene click reaction.

[0036] This invention utilizes the reaction of isocyanate methacrylate with polyethylene glycol to synthesize a polyether-type moisture-wicking finishing agent containing terminal carbon-carbon double bonds. This agent is then combined with carboxyl-terminated modified hyperbranched polyester and non-covalently modified alkenyl-modified nano-boron nitride to form a finishing solution. This solution is used to finish a thiol-modified thin-layer fabric, thereby giving the thin-layer fabric a cooling sensation and improving its wearing comfort by utilizing the combined effects of moisture wicking and heat conduction.

[0037] Among them, the carboxyl-terminated hyperbranched polyester and the moisture-wicking finishing agent synergistically improve the moisture-wicking performance of the fabric; the introduction of nano boron nitride increases the thermal conductivity of the fabric; during the finishing process of the fabric, the active carbon double bonds in the carboxyl-terminated hyperbranched polyester, the moisture-wicking finishing agent, and the alkenyl-modified nano boron nitride undergo a thiol-alkene click reaction with the thiol groups in the thiol-modified thin-layer fabric, which fixes the moisture-wicking functional components on the fabric surface and improves the wash resistance. Attached Figure Description

[0038] Figure 1 This is a SEM image of the thermally conductive and cooling thin-layer fabric prepared in this invention;

[0039] Figure 2 This is a photograph of the thermally conductive and cooling thin-layer fabric prepared in this invention.

[0040] Figure 3 These are line graphs of thermal conductivity in performance tests of Examples 1-5 and Comparative Examples 1-2 of this invention;

[0041] Figure 4 This is a bar chart showing the contact cooling coefficient of Examples 1-5 and Comparative Examples 1-2 in the performance test of this invention. Detailed Implementation

[0042] The present invention will be further illustrated below through specific embodiments. The following embodiments are specific implementations of the present invention, but the implementation of the present invention is not limited to the following embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and are included within the protection scope of the present invention.

[0043] Example 1

[0044] This embodiment discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0045] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0046] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16:1.3:0.08:21:0.1:43:0.2.

[0047] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0048] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0049] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0050] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0051] A finishing solution was prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator 1173, and 2-butanone in a mass ratio of 15:5:1:0.5:80.

[0052] The alkenyl-modified boron nitride nanoparticles are prepared by the following steps:

[0053] S1. Mix 1-pyrene methanol and dichloromethane at a solid-liquid ratio of 3g:25mL, add a dichloromethane solution of acryloyl chloride dropwise at 0℃, stir and react at 0℃ for 9h. After the reaction is completed, filter and take the filtrate. Wash it successively with water and saturated sodium bicarbonate aqueous solution. Separate the organic phase, remove water with anhydrous sodium sulfate, remove dichloromethane by rotary evaporation, and purify by column chromatography to obtain methyl 1-pyrene acrylate.

[0054] The molar ratio of 1-pyrene methanol, triethylamine, and acryloyl chloride is 13:17:15.5; the mass ratio of acryloyl chloride to dichloromethane in the dichloromethane solution is 1:5; and the eluent is prepared by mixing petroleum ether and ethyl acetate in a volume ratio of 8:1.

[0055] S2. Mix nano boron nitride and tetrahydrofuran at a solid-liquid ratio of 3g:400mL, sonicate for 20min, add methyl 1-pyrene acrylate and stir to dissolve, continue sonication for 2h, centrifuge to collect the precipitate, wash with tetrahydrofuran and ethanol in sequence, and dry at 50℃ for 12h to obtain alkenyl modified nano boron nitride.

[0056] The mass ratio of nano-boron nitride to methyl 1-pyrene acrylate is 3:0.8.

[0057] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0058] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0059] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0060] Example 2

[0061] This embodiment discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0062] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0063] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16.3:1.33:0.08:21.3:0.11:43.5:0.21.

[0064] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0065] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0066] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0067] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0068] A finishing solution was prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator 1173, and 2-butanone in a mass ratio of 14:6:2:0.5:80.

[0069] The preparation of alkenyl-modified boron nitride nanoparticles was the same as in Example 1;

[0070] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0071] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0072] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0073] Example 3

[0074] This embodiment discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0075] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0076] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16.5:1.35:0.08:21.5:0.11:44:0.21.

[0077] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0078] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0079] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0080] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0081] A moisture-wicking finishing agent, carboxyl-terminated hyperbranched polyester, alkenyl-modified nano boron nitride, photoinitiator 1173, and 2-butanone were mixed in a mass ratio of 12:8:3:0.5:80 to obtain a finishing solution.

[0082] The preparation of alkenyl-modified boron nitride nanoparticles was the same as in Example 1;

[0083] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0084] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0085] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0086] Example 4

[0087] This embodiment discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0088] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0089] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16.8:1.38:0.08:21.8:0.11:44.5:0.21.

[0090] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0091] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0092] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0093] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0094] A moisture-wicking finishing agent, carboxyl-terminated hyperbranched polyester, alkenyl-modified nano boron nitride, photoinitiator 1173, and 2-butanone were mixed in a mass ratio of 11:9:4:0.5:80 to obtain a finishing solution.

[0095] The preparation of alkenyl-modified boron nitride nanoparticles was the same as in Example 1;

[0096] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0097] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0098] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0099] Example 5

[0100] This embodiment discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0101] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0102] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 17:1.4:0.1:22:0.12:45:0.22.

[0103] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0104] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0105] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0106] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0107] A finishing solution was prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator 1173, and 2-butanone in a mass ratio of 10:10:5:0.5:80.

[0108] The preparation of alkenyl-modified boron nitride nanoparticles was the same as in Example 1;

[0109] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0110] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0111] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0112] In Comparative Example 1, the boron nanoparticles were not surface modified.

[0113] This comparative example discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0114] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0115] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16.3:1.35:0.08-01:21.8:0.12:43:0.22.

[0116] Step (2): Mix hyperbranched polyester and N,N-dimethylformamide, heat to 90°C, add maleic anhydride, and react at 90°C for 4 hours in a nitrogen atmosphere. After the reaction is complete, remove the solvent N,N-dimethylformamide by rotary evaporation, add acetone to dissolve and disperse, add diethyl ether to precipitate, filter to collect the precipitate, and dry at 40°C for 24 hours to obtain carboxyl-terminated modified hyperbranched polyester.

[0117] The mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:2:60.

[0118] Step (3): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool down to room temperature to obtain a moisture-wicking finishing agent.

[0119] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0120] A finishing solution was prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator 1173, and 2-butanone in a mass ratio of 15:5:1:0.5:80.

[0121] The alkenyl-modified boron nitride nanoparticles are prepared by the following steps:

[0122] S1. Mix 1-pyrene methanol and dichloromethane at a solid-liquid ratio of 3g:25mL, add a dichloromethane solution of acryloyl chloride dropwise at 0℃, stir and react at 8℃ for 9h. After the reaction is complete, filter and take the filtrate. Wash it successively with water and saturated sodium bicarbonate aqueous solution. Separate the organic phase, remove water with anhydrous sodium sulfate, remove dichloromethane by rotary evaporation, and purify by column chromatography to obtain methyl 1-pyrene acrylate.

[0123] The molar ratio of 1-pyrene methanol, triethylamine, and acryloyl chloride is 13:17:15.5; the mass ratio of acryloyl chloride to dichloromethane in the dichloromethane solution is 1:5; and the eluent is prepared by mixing petroleum ether and ethyl acetate in a volume ratio of 8:1.

[0124] S2. Mix nano boron nitride and tetrahydrofuran at a solid-liquid ratio of 3g:400mL, sonicate for 20min, add methyl 1-pyrene acrylate and stir to dissolve, continue sonication for 2h, centrifuge to collect the precipitate, wash with tetrahydrofuran and ethanol in sequence, and dry at 50℃ for 12h to obtain alkenyl modified nano boron nitride.

[0125] The mass ratio of nano-boron nitride to methyl 1-pyrene acrylate is 3:0.8.

[0126] Step (4): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0127] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0128] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0129] In Comparative Example 2, the hyperbranched polyester was not grafted with maleic anhydride.

[0130] This comparative example discloses a method for preparing a thermally conductive and cooling thin-layer fabric, including the following steps:

[0131] Step (1): Mix the first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of catalyst p-toluenesulfonic acid, and react them at 160°C for 2 hours under a nitrogen atmosphere. After the reaction, reduce the pressure to 1.2 kPa and perform polycondensation for 2 hours. After the reaction, add the second part of 2,2-dimethylolpropionic acid and the second part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add the third part of 2,2-dimethylolpropionic acid and the third part of catalyst p-toluenesulfonic acid, and repeat the reaction and polycondensation operation once. After the reaction, add acetone to dissolve and disperse, add cyclohexane to precipitate, filter to obtain the precipitate, and repeat the dissolution, precipitation, and filtration operation once. Dry at 60°C for 48 hours to obtain hyperbranched polyester.

[0132] The mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16.3:1.35:0.08-01:21.8:0.12:43:0.22.

[0133] Step (2): Heat polyethylene glycol to 65°C, add isocyanate methacrylate dropwise over 30 minutes, and after the addition is complete, react at 65°C for 4 hours. After the reaction is complete, cool to room temperature to obtain a moisture-wicking finishing agent.

[0134] In this case, the molar ratio of polyethylene glycol to isocyanate methacrylate is 1:2;

[0135] A finishing solution was prepared by mixing a moisture-wicking finishing agent, hyperbranched polyester, alkenyl-modified nano boron nitride, photoinitiator 1173, and 2-butanone in a mass ratio of 15:5:1:0.5:80.

[0136] The preparation of alkenyl-modified boron nitride nanoparticles was the same as in Example 1;

[0137] Step (3): Immerse the thin fabric in a 200 g / L sodium hydroxide aqueous solution with a bath ratio of 50:1, pre-treat at 80°C for 30 min, remove after pre-treatment, wash with water until neutral, and dry at 60°C for 12 h to obtain the pre-treated thin fabric.

[0138] 3-Mercaptopropyltriethoxysilane, ethanol, and water were mixed at a solid-liquid ratio of 5:80:20. The pH was adjusted to 4 by adding 1 mol / L acetic acid aqueous solution. The mixture was stirred and mixed at room temperature for 30 min to obtain a mercaptosilane finishing solution. The pretreated thin-layer fabric was then immersed in the mercaptosilane finishing solution at a bath ratio of 50:1 for 3 min at room temperature. After immersion, the fabric was removed and dried at 120℃ for 3 min to obtain a mercapto-modified thin-layer fabric.

[0139] The thiol-modified thin-layer fabric was immersed in a finishing solution with a liquor ratio of 20:1 and reacted at room temperature under ultraviolet light with a wavelength of 365nm for 1 hour. After the reaction was completed, the fabric was removed, washed with water, and dried at 60℃ for 24 hours to obtain a thermally conductive and cool-feeling thin-layer fabric.

[0140] In the above embodiments and comparative examples, the nano-boron nitride has a size of 100-500 nm; the thin-layer fabric is a polyester thin-layer knitted fabric with a weight of 90 g / m². 2 .

[0141] Test case

[0142] The thermally conductive and cooling thin-film fabrics prepared in Examples 1-5 and Comparative Examples 1-2 were subjected to performance tests. Specific test results are shown in Table 1.

[0143] Table 1

[0144]

[0145] The tests for each indicator in Table 1 were conducted according to the following standards: thermal conductivity was measured using a thermal conductivity meter; the contact cooling coefficient was measured using GB / T35263-2017 "Test and Evaluation of Instantaneous Cooling Performance of Textiles"; moisture permeability was measured using GB / T12704.1 "Textiles - Test Methods for Moisture Permeability of Fabrics - Part 1: Moisture Absorption Method"; and water droplet diffusion time was measured using GB / T 21655.1 "Evaluation of Moisture Absorption and Quick-Drying Properties of Textiles - Part 1: Single Combination Test Method".

[0146] As can be seen from the test results in Table 1, the thin-layer fabric prepared by this invention has good thermal conductivity, moisture absorption and perspiration wicking properties, and excellent cooling effect. This is because in this invention, hydrophilic end-carboxyl modified hyperbranched polyester is prepared, and it is combined with thermally conductive nano-boron nitride and polyether-type moisture-wicking finishing agent to form a finishing liquid. The mercapto-olefin click reaction is used to finish the mercapto-modified thin-layer fabric, so that the moisture-wicking functional components are fixed on the fabric surface. The combined effect of moisture absorption and perspiration wicking and thermal conductivity and heat dissipation gives the thin-layer fabric a cooling feeling, improving the wearing comfort and functional durability of the fabric.

[0147] In Comparative Example 1, the nano boron nitride did not undergo surface modification, resulting in reduced dispersibility. Furthermore, it could not be chemically bonded to the fabric during finishing. Therefore, the thermal conductivity and cooling effect after washing in Comparative Example 1 were not as good as those in the Example.

[0148] In Comparative Example 2, the hyperbranched polyester was not grafted with maleic anhydride, which reduced the hydrophilicity of the hyperbranched polyester. Furthermore, it could not be chemically bonded to the fabric during finishing, thus reducing the moisture-wicking performance of Comparative Example 2.

[0149] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. A method for preparing a thermally conductive and cooling thin-layer fabric, characterized in that, Includes the following steps: Step (1): Mix hyperbranched polyester and N,N-dimethylformamide, heat, add maleic anhydride, react, and after the reaction is complete, purify to obtain carboxyl-terminated modified hyperbranched polyester. Step (2): Heat polyethylene glycol and add isocyanate methacrylate dropwise. After the addition is complete, the reaction is carried out. After the reaction is completed, the temperature is lowered to obtain a moisture-wicking finishing agent. A finishing solution is prepared by mixing a moisture-wicking finishing agent, a carboxyl-terminated hyperbranched polyester, an alkenyl-modified nano boron nitride, a photoinitiator, and 2-butanone. Step (3): Immerse the thiol-modified thin-layer fabric in the finishing solution, react, remove it after the reaction is complete, wash it, and dry it to obtain the thermally conductive and cool-feeling thin-layer fabric.

2. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, The hyperbranched polyester in step (1) is prepared by the following steps: The first part of 2,2-dimethylolpropionic acid, pentaerythritol, and the first part of the catalyst p-toluenesulfonic acid were mixed and reacted. After the reaction was completed, the second part of 2,2-dimethylolpropionic acid and the second part of the catalyst p-toluenesulfonic acid were added and the reaction was continued. After the reaction was completed, the third part of 2,2-dimethylolpropionic acid and the third part of the catalyst p-toluenesulfonic acid were added and the reaction was repeated. After the reaction was completed, the mixture was purified to obtain hyperbranched polyester.

3. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 2, characterized in that, In step (1), when preparing the hyperbranched polyester, the mass ratio of the first part of 2,2-dimethylolpropionic acid, pentaerythritol, the first part of p-toluenesulfonic acid, the second part of 2,2-dimethylolpropionic acid, the second part of p-toluenesulfonic acid, the third part of 2,2-dimethylolpropionic acid, and the third part of p-toluenesulfonic acid is 16-17:1.3-1.4:0.08-0.1:21-22:0.1-0.12:43-45:0.2-0.

22. The conditions for the reaction, continued reaction, and second reaction are as follows: reaction in a nitrogen atmosphere at a temperature of 140-170℃ for 2-3 hours. After the reaction is completed, the pressure is reduced to 1-1.5 kPa for polycondensation reaction for 2-3 hours.

4. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, In step (1), the mass ratio of hyperbranched polyester, maleic anhydride, and N,N-dimethylformamide is 20:1.5-3:60-80; the reaction conditions are: reaction at 85-95℃ for 4-5 hours in a nitrogen atmosphere.

5. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, In step (2): the molar ratio of polyethylene glycol and isocyanate methacrylate is 1:2; the reaction conditions are: reaction at 60-70℃ for 3-5 hours; the mass ratio of moisture-wicking finishing agent, carboxyl-terminated hyperbranched polyester, nano boron nitride, photoinitiator, and 2-butanone is 10-15:5-10:1-5:0.5-1:

80.

6. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, In step (2), the alkenyl-modified boron nitride nanoparticles are prepared by the following steps: S1. Mix 1-pyrene methanol and dichloromethane, add a dichloromethane solution of acryloyl chloride dropwise, react, and after the reaction is complete, purify to obtain methyl 1-pyrene acrylate; The molar ratio of 1-pyrene methanol, triethylamine, and acryloyl chloride is 13:16-20:15-20; the mass ratio of acryloyl chloride to dichloromethane in the dichloromethane solution is 1:5-8; the reaction conditions are: stirring at 0-5℃ for 6-10 h. S2. Mix boron nanonitride and tetrahydrofuran, disperse by ultrasonication, add methyl 1-pyrene acrylate and stir to dissolve, continue ultrasonic dispersion, centrifuge, wash and dry to obtain alkenyl-modified boron nanonitride. The mass ratio of nano-boron nitride to methyl 1-pyrene acrylate is 3:0.

8.

7. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, The thiol-modified thin-layer fabric in step (3) is prepared by the following steps: The thin fabric is immersed in an aqueous sodium hydroxide solution for pretreatment. After the pretreatment is completed, it is taken out, washed, and dried to obtain the pretreated thin fabric. The ratio of the thin-layer fabric to the sodium hydroxide aqueous solution is 30-50:1, and the concentration of the sodium hydroxide aqueous solution is 150-200 g / L. The pretreatment conditions are: pretreatment at 70-80℃ for 30-40 min. Mix 3-mercaptopropyltriethoxysilane, ethanol, and water, adjust the pH value, and stir to obtain a mercaptosilane finishing solution; immerse the pretreated thin-layer fabric in the mercaptosilane finishing solution, remove it after immersion, and dry it to obtain a mercapto-modified thin-layer fabric. The solid-liquid ratio of 3-mercaptopropyltriethoxysilane, ethanol, and water is 3-5:80:20; the pH value of the mercaptosilane finishing solution is 3-4; the bath ratio of the pretreated thin fabric to the mercaptosilane finishing solution is 50:1; and the immersion conditions are: immersion at room temperature for 3-5 minutes.

8. The method for preparing a thermally conductive and cooling thin-layer fabric according to claim 1, characterized in that, In step (3): the ratio of mercapto-modified thin-layer fabric to finishing solution is 20-30:1; the reaction conditions are: click reaction at room temperature in ultraviolet light with a wavelength of 365nm for 1-3 hours.

9. A thermally conductive and cooling thin-layer fabric prepared by the method described in any one of claims 1-8.

10. The application of the thermally conductive and cooling thin-layer fabric as described in claim 9 in fabrics.

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