High-elasticity moisture-absorption cool-feeling fabric and preparation method and application thereof
Modified boron nitride was prepared by reacting polyolefins with 4-chloro-1-butene and N-methylindole and combining with boron oxide, vinyl trimethoxysilane and bis(4-methylphenyl)phosphine, which solved the shortcomings of existing high-elastic fabrics in terms of moisture absorption, coolness and antibacterial properties, and achieved comprehensive properties of high elasticity, moisture absorption, coolness, antibacterial and ultraviolet resistance.
Patent Information
- Application Number
- CN202510143352.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-03-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing high elastic fabrics have shortcomings in moisture absorption, coolness and antibacterial properties, and are difficult to meet the comprehensive needs of modern clothing for comfort, functionality and fashion.
Modified boron nitride was prepared by reacting polyolefins with 4-chloro-1-butene and N-methylindole to produce modified polyolefins, and combined with boron oxide, vinyl trimethoxysilane and bis(4-methylphenyl)phosphine and other materials, and then a highly elastic hygroscopic cool fabric was prepared by melt spinning process.
It achieves high elasticity, good moisture absorption and coolness performance of the fabric, and has good antibacterial and ultraviolet resistance, improving the comfort and functionality of the clothing.
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Abstract
Description
Technical Field
[0001] The invention relates to the field of fabrics, in particular to a high-elasticity moisture-absorbing cool fabric and a preparation method and application thereof. Background Art
[0002] High-elastic fabrics are usually made of polymers such as polyester, polyurethane, and polyolefin. These fabrics are favored for their excellent elasticity and recovery, and are ideal for making various types of high-elastic clothing. These high-elastic fabrics are widely used in a variety of scenarios, especially in situations that require a high degree of fit and flexibility. For example, in the fields of fitness, outdoor adventures, and daily leisure, high-elastic fabrics are often used to make tight sportswear, yoga clothes, swimsuits, running pants, and shaping underwear.
[0003] Since the human body produces a lot of sweat when it is active, it is easy for bacteria to grow. Highly hygroscopic fabrics can effectively absorb and diffuse sweat, keep the skin dry, avoid sweat stains and odors, and improve the comfort and hygiene of wearing. The cooling properties can meet the heat dissipation needs in high temperature environments or high-intensity exercise. Fabrics with antibacterial properties can kill bacteria and provide a safe environment for the human body. In addition, when high-elastic fabrics are used to make outdoor clothing, they are often exposed to ultraviolet rays, which gives the fabrics a certain degree of anti-ultraviolet ability, which can effectively block or reduce the damage of ultraviolet rays to the human body.
[0004] In summary, elastic fabrics with multiple functions meet the comprehensive needs of modern people for clothing comfort, functionality and fashion with their unique properties. They are widely used in the production of various types of high-elastic clothing, bringing people a more comfortable and healthy wearing experience. Summary of the invention
[0005] The object of the present invention is to provide a high-elasticity moisture-absorbing cool fabric and a preparation method and application thereof, so as to solve the problems existing in the prior art.
[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a method for preparing a highly elastic moisture-absorbing and cool fabric, comprising the following preparation steps: (1) Weighing polyolefin, 4-chloro-1-butene, and benzoyl peroxide in a mass ratio of 1: (0.3-0.5): 0.01, adding them into a twin-screw extruder for melt blending, and extruding and granulating to obtain a pre-modified polyolefin; mixing the pre-modified polyolefin, decalin, and N-methylindole in a mass ratio of 1: (50-60): (0.5-0.7), heating to 110-120° C. for reaction for 8-10 hours, and after the reaction, adding chloroform 3-4 times the mass of decalin, filtering, washing with chloroform 3-4 times, and vacuum drying to obtain a modified polyolefin; (2) Pretreated boron nitride, bis(4-methylphenyl)phosphine, 1,2-dichloroethane, and cesium carbonate were mixed in a mass ratio of 1: (0.3-0.5): (50-60): (0.1-0.2), heated to 50-60°C for reaction for 3-4 hours, filtered after the reaction, washed with pure water for 3 times, and vacuum dried to obtain pre-modified boron nitride; (3) Pre-modified boron nitride, manganese dioxide, and 70 wt% sulfuric acid solution are mixed in a mass ratio of 1: (1.2-1.3): (5-6), heated to 90°C, reacted for 2-3 hours, filtered after the reaction, washed with pure water three times, and vacuum dried to obtain modified boron nitride; (4) The modified polyolefin, modified boron nitride and dibromohydantoin are mixed in a mass ratio of 1: (0.05-0.07): 0.01 and then prepared into fibers through a melt spinning process. The fibers are then spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics.
[0007] As an optimization, the polyolefin model in step (1) is 8842, which was purchased from Dow Chemical, USA.
[0008] As an optimization, the main screw speed of the twin-screw extruder in step (1) is 175 r / min, and the temperatures of sections 1-7 of the twin-screw extruder are 130, 170, 190, 200, 190, 170, and 130°C.
[0009] As an optimization, the preparation method of the pretreated boron nitride in step (2) is as follows: under the condition of ammonia gas with a flow rate of 200 mL / min, boron oxide and ethylenediamine are mixed in a molar ratio of 1:2 for 1 hour, heated to 280°C for 1 hour, naturally cooled to room temperature, and then heated to 1300°C at a heating rate of 4°C / min, and kept warm for 2 hours to obtain porous boron nitride; porous boron nitride and 3.5wt% vinyltrimethoxysilane solution are weighed in a mass ratio of 1: (0.3-0.5), 3 A .5wt% vinyltrimethoxysilane solution is obtained by mixing a vinyltrimethoxysilane solution and anhydrous ethanol, wherein the mass fraction of vinyltrimethoxysilane in the vinyltrimethoxysilane solution is 3.5wt%; 3.5wt% vinyltrimethoxysilane solution and anhydrous ethanol are mixed in a mass ratio of 1:50, and porous boron nitride is added after stirring for 3 hours, and the temperature is raised to 50-60°C and stirring is continued for 3 hours. After the reaction is completed, the solution is filtered and washed with pure water for 3 times, and pretreated boron nitride is obtained by vacuum drying.
[0010] As an optimization, the melt spinning process parameters of step (4) are as follows: spinning temperatures: 297°C in zone 1, 305°C in zone 2, 295°C in zone 3, and 295°C in zone 4; spinneret temperature is 290°C; and spinning speed is 500 m / min.
[0011] As an optimization, the surface density of the fabric in step (4) is 170 g / m2 .
[0012] The present invention also provides a high-elasticity moisture-absorbing and cooling fabric prepared according to the preparation method of the high-elasticity moisture-absorbing and cooling fabric.
[0013] The present invention also provides an application of a high-elasticity moisture-absorbing and cooling fabric prepared according to the preparation method of the high-elasticity moisture-absorbing and cooling fabric in clothing.
[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: when preparing a high-elasticity moisture-absorbing and cooling fabric, the present invention firstly melt-grafts polyolefin with 4-chloro-1-butene, and then reacts with N-methylindole to generate a modified polyolefin; secondly, reacts boron oxide with ethylenediamine to prepare porous boron nitride, and then reacts with vinyltrimethoxysilane, and then reacts with bis(4-methylphenyl)phosphine, and then reacts with an oxidant to generate modified boron nitride; finally, the modified polyolefin and the modified boron nitride are mixed and melt-spun to form fibers, and then the fibers are woven into fabrics to obtain a high-elasticity moisture-absorbing and cooling fabric.
[0015] Firstly, under the action of an initiator, polyolefin is melt-grafted with 4-chloro-1-butene, so that a chloroalkyl group is grafted onto the side chain of the polyolefin, and the chloroalkyl group reacts with N-methylindole to generate an indole quaternary ammonium salt, which has not only good antibacterial properties but also good hygroscopic properties; secondly, boron oxide is reacted with ethylenediamine, and porous boron nitride is prepared by heat treatment, and the boron nitride has good thermal conductivity and can give the fabric a cool feeling, and the porous structure can give the fabric good air permeability, and after being treated with vinyl trimethoxysilane, the surface of the boron nitride has double bonds, and then the boron nitride undergoes a phosphine hydrogenation reaction with bis(4-methylphenyl)phosphine to graft bis(4-methylphenyl)phosphine onto the surface of the boron nitride. The modified polyolefin and the modified boron nitride are mixed and melt-spun into fibers, which are then spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics. The aldehyde groups on the surface of the modified boron nitride react with the indole structures on the modified polyolefins to generate bisindole structures, which can not only cross-link the polyolefins and improve the mechanical properties of the materials, but also the aromatic rings on the bisindole and bis(4-methylphenyl)phosphine form a large conjugated structure and have good ultraviolet absorption properties, thereby giving the fabrics good anti-ultraviolet properties.
[0016] The aldehyde group on the surface of the modified boron nitride reacts with the indole structure on the modified polyolefin to generate a bisindole structure. The bisindole and the aromatic ring on the bis(4-methylphenyl)phosphine form a large conjugated structure. The schematic diagram of the reaction is shown in the figure below: . DETAILED DESCRIPTION
[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0018] The polyolefin model of the following examples and comparative examples is 8842, purchased from Dow Chemical, USA; the mesh size of the boron oxide is 500 mesh; the 3.5wt% vinyl trimethoxysilane solution is obtained by mixing vinyl trimethoxysilane solution and anhydrous ethanol, and the mass fraction of vinyl trimethoxysilane in the vinyl trimethoxysilane solution is 3.5wt%; the surface density of the prepared fabric is 170g / m 2 .
[0019] Example 1 A method for preparing a highly elastic moisture-absorbing and cooling fabric, the method comprising the following preparation steps: (1) Weighing polyolefin, 4-chloro-1-butene, and benzoyl peroxide in a mass ratio of 1:0.3:0.01, adding them into a twin-screw extruder for melt blending, and obtaining pre-modified polyolefin after extrusion granulation. The speed of the twin-screw extruder main screw is 175 r / min, and the temperatures of the 1-7 sections of the twin-screw extruder are 130, 170, 190, 200, 190, 170, and 130°C; mixing the pre-modified polyolefin, decalin, and N-methylindole in a mass ratio of 1:50:0.5, heating to 120°C for reaction for 10 hours, adding chloroform 4 times the mass of decalin after the reaction, filtering, washing with chloroform 4 times, and vacuum drying to obtain modified polyolefin; (2) Under the condition of ammonia gas flowing at a flow rate of 200 mL / min, boron oxide and ethylenediamine were mixed in a molar ratio of 1:2 for 1 h, heated to 280°C for 1 h, naturally cooled to room temperature, and then heated to 1300°C at a heating rate of 4°C / min, and kept warm for 2 h to obtain porous boron nitride; porous boron nitride and 3.5 wt% vinyl trimethoxysilane solution were weighed in a mass ratio of 1:0.3, and the 3.5 wt% vinyl trimethoxysilane solution and anhydrous ethylenediamine were mixed. The alcohol was mixed in a mass ratio of 1:50, and porous boron nitride was added after stirring for 3 hours, and the temperature was raised to 60°C and the stirring was continued for 3 hours. After the reaction was completed, it was filtered and washed with pure water for 3 times, and then vacuum dried to obtain pretreated boron nitride; pretreated boron nitride, bis(4-methylphenyl)phosphine, 1,2-dichloroethane, and cesium carbonate were mixed in a mass ratio of 1:0.3:50:0.1, and the temperature was raised to 60°C for reaction for 4 hours. After the reaction was completed, it was filtered and washed with pure water for 3 times, and then vacuum dried to obtain pre-modified boron nitride; (3) Pre-modified boron nitride, manganese dioxide, and 70 wt% sulfuric acid solution were mixed in a mass ratio of 1:1.2:5, heated to 90°C, reacted for 3 hours, filtered after the reaction, washed with pure water 3 times, and vacuum dried to obtain modified boron nitride; (4) Modified polyolefin, modified boron nitride and dibromohydantoin were mixed in a mass ratio of 1:0.05:0.01 and prepared into fibers through a melt spinning process. The melt spinning process parameters were as follows: spinning temperatures: 297°C in zone 1, 305°C in zone 2, 295°C in zone 3 and 295°C in zone 4; spinneret temperature was 290°C; spinning speed was 500 m / min; and the fibers were spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics.
[0020] Example 2 A method for preparing a highly elastic moisture-absorbing and cooling fabric, the method comprising the following preparation steps: (1) Weighing polyolefin, 4-chloro-1-butene, and benzoyl peroxide in a mass ratio of 1:0.4:0.01, adding them into a twin-screw extruder for melt blending, and obtaining pre-modified polyolefin after extrusion granulation. The speed of the main screw of the twin-screw extruder is 175 r / min, and the temperatures of the 1-7 sections of the twin-screw extruder are 130, 170, 190, 200, 190, 170, and 130°C; mixing the pre-modified polyolefin, decalin, and N-methylindole in a mass ratio of 1:55:0.6, heating to 115°C for reaction for 9 hours, and after the reaction, adding chloroform 3 times the mass of decalin, filtering and washing with chloroform 3 times, and vacuum drying to obtain modified polyolefin; (2) Under the condition of ammonia gas flowing at a flow rate of 200 mL / min, boron oxide and ethylenediamine were mixed in a molar ratio of 1:2 for 1 h, heated to 280°C for 1 h, naturally cooled to room temperature, and then heated to 1300°C at a heating rate of 4°C / min, and kept warm for 2 h to obtain porous boron nitride; porous boron nitride and 3.5 wt% vinyl trimethoxysilane solution were weighed in a mass ratio of 1:0.4, and the 3.5 wt% vinyl trimethoxysilane solution and anhydrous ethanol were mixed. Mix in a mass ratio of 1:50, stir for 3 hours, then add porous boron nitride, heat to 55°C and continue stirring for 3 hours, filter after the reaction is completed, wash with pure water 3 times, and vacuum dry to obtain pretreated boron nitride; mix pretreated boron nitride, bis(4-methylphenyl)phosphine, 1,2-dichloroethane, and cesium carbonate in a mass ratio of 1:0.4:55:0.15, heat to 55°C and react for 3.5 hours, filter after the reaction is completed, wash with pure water 3 times, and vacuum dry to obtain pre-modified boron nitride; (3) Pre-modified boron nitride, manganese dioxide, and 70 wt% sulfuric acid solution were mixed in a mass ratio of 1:1.25:5.5, heated to 90°C, reacted for 2.5 hours, filtered after the reaction, washed with pure water three times, and vacuum dried to obtain modified boron nitride; (4) Modified polyolefin, modified boron nitride and dibromohydantoin were mixed in a mass ratio of 1:0.06:0.01 and prepared into fibers through a melt spinning process. The melt spinning process parameters were as follows: spinning temperatures: 297°C in zone 1, 305°C in zone 2, 295°C in zone 3 and 295°C in zone 4; spinneret temperature was 290°C; spinning speed was 500 m / min; and the fibers were spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics.
[0021] Example 3 A method for preparing a highly elastic moisture-absorbing and cooling fabric, the method comprising the following preparation steps: (1) Weighing polyolefin, 4-chloro-1-butene, and benzoyl peroxide in a mass ratio of 1:0.5:0.01, adding them into a twin-screw extruder for melt blending, and obtaining pre-modified polyolefin after extrusion granulation. The speed of the twin-screw extruder main screw is 175 r / min, and the temperatures of the 1-7 sections of the twin-screw extruder are 130, 170, 190, 200, 190, 170, and 130°C; mixing the pre-modified polyolefin, decalin, and N-methylindole in a mass ratio of 1:60:0.7, heating to 110°C for reaction for 8 hours, and after the reaction, adding chloroform 3 times the mass of decalin, filtering and washing with chloroform 3 times, and vacuum drying to obtain modified polyolefin; (2) Under the condition of ammonia gas flowing at a flow rate of 200 mL / min, boron oxide and ethylenediamine were mixed in a molar ratio of 1:2 for 1 h, heated to 280°C for 1 h, naturally cooled to room temperature, and then heated to 1300°C at a heating rate of 4°C / min, and kept warm for 2 h to obtain porous boron nitride; porous boron nitride and 3.5 wt% vinyltrimethoxysilane solution were weighed in a mass ratio of 1:0.5, and the 3.5 wt% vinyltrimethoxysilane solution and anhydrous ethylenediamine were mixed. The alcohol was mixed in a mass ratio of 1:50, and porous boron nitride was added after stirring for 3 hours, and the temperature was raised to 50°C and the stirring was continued for 3 hours. After the reaction was completed, the mixture was filtered and washed with pure water for 3 times, and then vacuum dried to obtain pretreated boron nitride; the pretreated boron nitride, bis(4-methylphenyl)phosphine, 1,2-dichloroethane, and cesium carbonate were mixed in a mass ratio of 1:0.5:60:0.2, and the temperature was raised to 50°C for reaction for 3 hours. After the reaction was completed, the mixture was filtered and washed with pure water for 3 times, and then vacuum dried to obtain pre-modified boron nitride; (3) Pre-modified boron nitride, manganese dioxide, and 70 wt% sulfuric acid solution were mixed in a mass ratio of 1:1.3:6, heated to 90°C, reacted for 2 hours, filtered after the reaction, washed with pure water three times, and vacuum dried to obtain modified boron nitride; (4) Modified polyolefin, modified boron nitride and dibromohydantoin were mixed in a mass ratio of 1:0.07:0.01 and prepared into fibers through a melt spinning process. The melt spinning process parameters were as follows: spinning temperatures: 297°C in zone 1, 305°C in zone 2, 295°C in zone 3 and 295°C in zone 4; spinneret temperature was 290°C; spinning speed was 500 m / min; and the fibers were spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics.
[0022] Comparative Example 1: The preparation method of the highly elastic moisture-absorbing and cooling fabric of Comparative Example 1 differs from that of Example 2 in that steps (2) to (3) are not included, and step (4) is modified as follows: the modified polyolefin and boron nitride are mixed in a mass ratio of 1:0.06 and then prepared into fibers by a melt spinning process, and the melt spinning process parameters are as follows: the spinning temperature is 297° C. in zone 1, 305° C. in zone 2, 295° C. in zone 3, and 295° C. in zone 4; the spinneret temperature is 290° C.; the spinning speed is 500 m / min; and the fibers are then spun into fabric to obtain a highly elastic moisture-absorbing and cooling fabric.
[0023] Comparative Example 2: The preparation method of the highly elastic moisture-absorbing and cooling fabric of Comparative Example 2 differs from that of Example 2 in that step (1) is not included, and step (4) is modified as follows: polyolefin and modified boron nitride are mixed in a mass ratio of 1:0.06 and then prepared into fibers by a melt spinning process, wherein the melt spinning process parameters are as follows: spinning temperatures are: 297° C. for zone 1, 305° C. for zone 2, 295° C. for zone 3, and 295° C. for zone 4; the spinneret temperature is 290° C.; the spinning speed is 500 m / min; and the fibers are then spun into fabric to obtain a highly elastic moisture-absorbing and cooling fabric.
[0024] Test Example 1: Flame retardant performance test: Test method: According to GB / T5454 standard, the fabrics prepared in each embodiment and comparative example were made into samples, and the limiting oxygen index of the samples was tested using a ZR-01 limiting oxygen index instrument. The results are shown in Table 1.
[0025]
[0026] From the comparison of the experimental data of Examples 1-3 and Comparative Examples 1-2 in Table 1, it can be found that the fabric prepared by the present invention has good flame retardant properties.
[0027] By comparison, the limiting oxygen index of Examples 1 to 3 is greater than that of Comparative Example 1, indicating that the porous boron nitride is prepared by reacting boron oxide with ethylenediamine and undergoing heat treatment, and then treated with vinyltrimethoxysilane to provide a double bond on the surface of the boron nitride, and then undergoes a hydrogenation reaction with bis(4-methylphenyl)phosphine, and bis(4-methylphenyl)phosphine is grafted on the surface of the boron nitride, and the phosphorus element has good flame retardant properties.
[0028] Test Example 2: UV resistance test: Test method: The UVA transmittance of the fabrics prepared in each embodiment and comparative example was tested according to the standard GBT18830-2009. The results are shown in Table 2.
[0029]
[0030] From the comparison of the experimental data of Examples 1-3 and Comparative Examples 1-2 in Table 2, it can be found that the fabric prepared by the present invention has good anti-ultraviolet performance.
[0031] By comparison, the transmittances of Examples 1 to 3 are lower than those of Comparative Examples 1 and 2, indicating that when the modified polyolefin and the modified boron nitride are mixed and melt-spun into fibers, which are then woven into fabrics, the aldehyde group on the surface of the modified boron nitride reacts with the indole structure on the modified polyolefin to generate a bisindole structure, and the aromatic rings on the bisindole and bis(4-methylphenyl)phosphine form a large conjugated structure with good ultraviolet absorption performance, thereby giving the fabrics good anti-ultraviolet performance.
[0032] Test Example 3: Antimicrobial performance testing Test method: The antibacterial properties of the moisture-absorbing and breathable fabrics prepared in each embodiment and comparative example were tested using the oscillation method in GB / T20944.3-2008 "Evaluation of Antibacterial Properties of Textiles". The results are shown in Table 3.
[0033]
[0034] From the comparison of the experimental data of Examples 1-3 and Comparative Examples 1-2 in Table 3, it can be found that the fabric prepared by the present invention has good antibacterial properties.
[0035] By comparison, the antibacterial rates of Examples 1 to 3 are greater than that of Comparative Example 2, indicating that under the action of the initiator, the polyolefin is melt-grafted with 4-chloro-1-butene, so that the polyolefin side chain is grafted with chloroalkyl, and the chloroalkyl reacts with N-methylindole to form indole quaternary ammonium salt. The quaternary ammonium salt has good antibacterial properties and can give the fabric good antibacterial properties.
[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any marking in a claim should not be considered as limiting the claim to which it relates.
Claims
1. A method for preparing a highly elastic moisture-absorbing and cool fabric, characterized in that: The method comprises the following preparation steps: (1) Weighing polyolefin, 4-chloro-1-butene, and benzoyl peroxide in a mass ratio of 1: (0.3-0.5): 0.01, adding them into a twin-screw extruder for melt blending, and extruding and granulating to obtain a pre-modified polyolefin; mixing the pre-modified polyolefin, decalin, and N-methylindole in a mass ratio of 1: (50-60): (0.5-0.7), heating to 110-120° C. for reaction for 8-10 hours, and after the reaction, adding chloroform 3-4 times the mass of decalin, filtering, washing with chloroform 3-4 times, and vacuum drying to obtain a modified polyolefin; (2) Pretreated boron nitride, bis(4-methylphenyl)phosphine, 1,2-dichloroethane, and cesium carbonate were mixed in a mass ratio of 1: (0.3-0.5): (50-60): (0.1-0.2), heated to 50-60°C for reaction for 3-4 hours, filtered after the reaction, washed with pure water for 3 times, and vacuum dried to obtain pre-modified boron nitride; (3) Pre-modified boron nitride, manganese dioxide, and 70 wt% sulfuric acid solution are mixed in a mass ratio of 1: (1.2-1.3): (5-6), heated to 90°C, reacted for 2-3 hours, filtered after the reaction, washed with pure water three times, and vacuum dried to obtain modified boron nitride; (4) The modified polyolefin, modified boron nitride and dibromohydantoin are mixed in a mass ratio of 1: (0.05-0.07): 0.01 and then prepared into fibers through a melt spinning process. The fibers are then spun into fabrics to obtain highly elastic, moisture-absorbing and cool fabrics.
2. The method for preparing a highly elastic moisture-absorbing and cool fabric according to claim 1, characterized in that: The polyolefin model in step (1) is 8842.
3. The method for preparing a highly elastic moisture-absorbing and cool fabric according to claim 1, characterized in that: The main screw speed of the twin-screw extruder in step (1) is 175 r / min, and the temperatures of sections 1-7 of the twin-screw extruder are 130, 170, 190, 200, 190, 170, and 130°C.
4. The method for preparing a highly elastic moisture-absorbing and cool fabric according to claim 1, characterized in that: The preparation method of the pretreated boron nitride in step (2) is as follows: under the condition of ammonia gas with a flow rate of 200 mL / min, boron oxide and ethylenediamine are mixed in a molar ratio of 1:2 for 1 hour, heated to 280°C for 1 hour, naturally cooled to room temperature, and then heated to 1300°C at a heating rate of 4°C / min, and kept warm for 2 hours to obtain porous boron nitride; porous boron nitride and 3.5wt% vinyltrimethoxysilane solution are weighed in a mass ratio of 1: (0.3-0.5), 3.5w t% vinyltrimethoxysilane solution is obtained by mixing vinyltrimethoxysilane solution and anhydrous ethanol, and the mass fraction of vinyltrimethoxysilane in the vinyltrimethoxysilane solution is 3.5wt%; 3.5wt% vinyltrimethoxysilane solution and anhydrous ethanol are mixed in a mass ratio of 1:50, and porous boron nitride is added after stirring for 3 hours, and the temperature is raised to 50-60°C and stirring is continued for 3 hours. After the reaction is completed, it is filtered and washed with pure water for 3 times, and pretreated boron nitride is obtained by vacuum drying.
5. The method for preparing a highly elastic moisture-absorbing and cool fabric according to claim 1, characterized in that: The melt spinning process parameters of step (4) are as follows: spinning temperatures: 297°C in zone 1, 305°C in zone 2, 295°C in zone 3, and 295°C in zone 4; spinneret temperature is 290°C; and spinning speed is 500 m / min.
6. The method for preparing a highly elastic moisture-absorbing and cool fabric according to claim 1, characterized in that: The surface density of the fabric in step (4) is 170 g / m 2 .
7. A highly elastic moisture-absorbing and cooling fabric prepared according to the method for preparing a highly elastic moisture-absorbing and cooling fabric according to any one of claims 1 to 6.
8. Use of the highly elastic moisture-absorbing and cooling fabric prepared by the method for preparing the highly elastic moisture-absorbing and cooling fabric according to any one of claims 1 to 6 in clothing.