Moisture-absorbing and sweat-conducting polyester fabric and method for manufacturing the same

Abstract

The application discloses a moisture-absorbing and sweat-conducting polyester fabric and a preparation method thereof, and relates to the technical field of high-performance fiber fabrics. The moisture-absorbing and sweat-conducting polyester fabric comprises moisture-absorbing and sweat-conducting polyester fibers; the moisture-absorbing and sweat-conducting polyester fibers contain 5-12 wt% cool particles; the modified particles are obtained by first using pretreated mica sheets as a base material surface deposition mesoporous silica; the core-shell particles are obtained by using binary phase change materials to coat the modified particles; and the cool particles are obtained by performing hydrophilic treatment on the surface of the core-shell particles; the cool particles are added in the polyester, which not only endows the polyester material with instantaneous cool performance, but also endows the polyester with moisture-absorbing and sweat-conducting performance. The polyester fabric prepared by spinning the moisture-absorbing and sweat-conducting polyester fibers has good wearability.

Description

Technical Field

[0001] This invention relates to the field of high-performance fiber fabric technology, specifically to a moisture-wicking polyester fabric and its preparation method. Background Technology

[0002] As people place greater emphasis on health and comfort in their lifestyles, the sports trend has gradually become one of the mainstream fashion cultures today. People's demands for the comfort of sportswear are also increasing, placing higher demands on the moisture-wicking properties of clothing fabrics. Natural fibers have good moisture absorption and are comfortable to wear, but when the body sweats heavily, the sweat cannot be wicked away in time, causing the clothing to cling to the body and causing discomfort. In terms of moisture wicking and permeability, chemical fibers have an advantage over natural fibers. Polyester fiber, as one of the largest chemical fibers produced both domestically and internationally, has excellent fiber-forming and mechanical properties, and is favored by the market for its easy washing, quick drying, and crispness. However, because polyester fiber is a highly crystalline fiber, its molecular backbone does not contain hydrophilic functional groups, thus exhibiting hydrophobicity. Its moisture absorption and permeability are poor, resulting in fabrics with poor breathability, especially when the body sweats, giving a stuffy and uncomfortable feeling. The poor moisture absorption of polyester fiber also brings a series of problems to weaving, such as easy accumulation of static electricity, easy attraction of dust, and difficulty in removing oil stains.

[0003] The moisture-wicking properties of fibers depend on their chemical and physical structures. Gaseous moisture evaporating from the skin surface is first absorbed by the fiber material, then released through the material's surface. The capillary effect created by the pores (capillaries, micropores, grooves) within the fiber and the gaps between fibers also allows moisture to be adsorbed, diffused, and released within the fiber. These two processes result in moisture migration; the former is mainly related to the chemical structure of the fiber macromolecules, while the latter is related to the fiber surface structure. Polyester fiber is currently the most widely used synthetic fiber, and improving its moisture-wicking properties is a topic of interest for researchers both domestically and internationally. When sweat (gas or liquid phase) excreted by the human body comes into contact with fabric, it must first wet the fabric. Then, the sweat is conducted and diffused through the gaps between the fibers that make up the fabric or through the fibers themselves. Finally, relying on the humidity difference between the sweat and the environment, the sweat evaporates and diffuses, allowing the fabric to dry quickly, thereby improving the comfort of wearing clothing. However, for polyester fibers that lack polar hydrophilic groups, it is almost impossible for them to be wetted by water. Before this, many related studies have basically focused on making polyester fibers into irregularly shaped fibers such as hollow, Y-shaped, +-shaped, and W-shaped fibers. Although the large specific area of ​​irregularly shaped fibers makes them more conducive to wetting than circular cross-sections, the lack of hydrophilic groups on the fiber surface means that the fabric's wettability to water is still insufficient. Summary of the Invention

[0004] The purpose of this invention is to provide a moisture-wicking polyester fabric and its preparation method, thereby solving the following technical problems:

[0005] Existing technologies improve the specific surface area of ​​polyester materials by making polyester fibers into irregularly shaped fibers, thereby enhancing the wettability of polyester. However, since the fibers themselves lack hydrophilic groups, the moisture absorption and wicking properties of the fabrics are still relatively poor.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A moisture-wicking polyester fabric, comprising moisture-wicking polyester fibers; the moisture-wicking polyester fibers contain 5-12 wt% cooling particles.

[0008] The preparation method of cooling particles includes the following steps:

[0009] S1: Add template agent, pretreated mica flakes, anhydrous ethanol, and deionized water to a reaction vessel and disperse them. Adjust the pH to 9-10, add tetraethyl orthosilicate and 3-aminopropyltriethoxysilane, control the temperature at 40-45℃, keep warm and stir for 18-24h, centrifuge, wash to remove template agent, and dry to obtain modified particles.

[0010] S2: Add sodium dodecyl sulfate and deionized water to a reaction flask and stir. Mix n-octadecane with methyl palmitate and heat to 60-70℃ before adding to the reaction flask. Add modified particles and chitosan acetate solution under stirring. Control the temperature at 40-50℃ and keep warm for 1-2 hours under stirring. Add glutaraldehyde and control the temperature at 45-55℃. Keep warm and cure for 1-2 hours. Dry to obtain core-shell particles.

[0011] S3: Add carboxycellulose nanocrystals and tetrahydrofuran to a reactor and disperse them by ultrasonication. Add core-shell particles, control the temperature at 70-80℃, and keep the reaction at this temperature for 4-8 hours. Centrifuge, wash, and dry to obtain cooling particles.

[0012] As a further aspect of the present invention: the template agent in S1 is hexadecyltrimethylammonium bromide;

[0013] The addition ratio of template agent, pretreated mica sheet, anhydrous ethanol, deionized water, tetraethyl orthosilicate, and 3-aminopropyltriethoxysilane is 1-1.5g: 10g: 80-90mL: 10-20mL: 5-7.5g: 1-1.5g.

[0014] As a further aspect of the present invention: the chitosan acetate solution in S2 is a 2-4 wt% chitosan acetate solution with pH 5.5;

[0015] The addition ratio of sodium dodecyl sulfate, deionized water, n-octadecane, methyl palmitate, modified particles, chitosan acetate solution, and glutaraldehyde is 0.5g-1g: 100mL-200mL: 5-15g: 5g: 1g: 50-100mL: 0.01-0.02g.

[0016] As a further aspect of the present invention: the addition ratio of carboxycellulose nanocrystals, tetrahydrofuran, and core-shell particles in S3 is 1-1.5g: 100-200mL: 10g.

[0017] As a further aspect of the present invention, the method for preparing pretreated mica sheets includes the following steps:

[0018] A1: The nano-mica sheets washed with isopropanol were placed in dilute nitric acid and soaked at room temperature for 0.5-1 h. After filtration, washing and drying, activated mica sheets were obtained.

[0019] A2: Place the activated mica sheets in a silane coupling agent solution and immerse them at room temperature for 0.5-1 hour. Then filter, wash, and dry to obtain pretreated mica sheets.

[0020] As a further aspect of the present invention: the dilute nitric acid is a 5-8 wt% aqueous nitric acid solution;

[0021] The silane coupling agent solution is an aqueous solution of ethanol containing 1-2 wt% 3-aminopropyltriethoxysilane; the volume ratio of ethanol to water is 4-5:1; the mass ratio of activated mica flakes to 3-aminopropyltriethoxysilane is 1:0.1-0.3.

[0022] As a further aspect of the present invention, the preparation method of moisture-wicking polyester fiber includes the following steps: blending terminal hydroxyl polyester and cooling particles into a melt-spun mixture, followed by post-treatment to obtain moisture-wicking polyester fiber.

[0023] As a further aspect of the present invention, the specific conditions for blend melt spinning are as follows: screw zone 1 temperature 275-280℃, zone 2 280-285℃, zone 3 285-290℃, zone 4 290-295℃, zone 5 285-290℃, zone 6 280-285℃, and box temperature 280-285℃.

[0024] As a further aspect of the present invention, the specific steps of the post-processing are: stretching temperature of 60-65℃, total stretching ratio of 3.2-3.6 times, and heat setting temperature of 175-180℃.

[0025] The method for preparing moisture-wicking polyester fabric as described above involves weaving moisture-wicking polyester fibers to obtain the moisture-wicking polyester fabric.

[0026] As a further aspect of the present invention, the moisture-wicking fabric can also be prepared by blending moisture-wicking polyester fiber with other fibers, which can be chemical fibers or natural fibers.

[0027] The beneficial effects of this invention are:

[0028] (1) Enhance the cooling effect and moisture-wicking properties of mica powder

[0029] This invention utilizes KH550 to surface-treat mica sheets, grafting organosilicon molecular chains and amino groups onto the mica sheet surface to obtain pretreated mica sheets. This invention then uses tetraethyl orthosilicate as a raw material and the pretreated mica sheet as a substrate to perform a soft-stencil reaction, depositing mesoporous silica on the mica sheet surface. The mesoporous silica in the mica sheet layers and surface not only utilizes its high specific area to increase the amount of sweat adsorbed and directionally guides moisture through capillary action, but also effectively achieves dynamic humidity balance under high humidity conditions, thus maintaining a prolonged cooling effect.

[0030] (2) Construct a core-shell structure to endow the fabric with multiple functions

[0031] This application uses an octadecane-methyl palmitate eutectic system as a binary phase change material. The binary phase change material is fixed on the surface of modified particles, and chitosan is used to initiate electrostatic adsorption and glutaraldehyde to cure and crosslink, thereby improving the uniformity and heat resistance of the shell layer to obtain core-shell particles. When body temperature rises, the binary phase change material absorbs heat, which accelerates the discharge and drying of sweat. This application uses a binary phase change material to make the material molecules more loosely arranged, increase the energy storage density, and improve the heat absorption capacity.

[0032] This application utilizes the amide reaction between the amino groups on the surface of core-shell particles and the carboxyl groups of carboxycellulose nanocrystals to coat the surface of the core-shell particles with a hydrophilic layer; the mica core conducts heat rapidly, the phase change shell absorbs heat and stores energy, and the hydrophilic layer instantly conducts moisture. The structural design of "core-shell energy storage + surface moisture conduction" breaks through the bottleneck of the incompatibility between hydrophobicity and hygroscopicity in traditional cooling materials.

[0033] (3) Water wash resistance to achieve the function

[0034] The hydrophilic layer on the surface of the cooling particles prepared in this application is composed of carboxycellulose nanocrystals. These nanocrystals are integrated and cross-linked with hydroxyl-terminated polyester chips to achieve a stable bond between the cooling particles and the polyester matrix, thereby improving the washability of the functional fibers and the durability of the fabric's cooling and moisture-wicking properties.

[0035] In summary, this invention prepares a moisture-wicking and quick-drying polyester fiber by adding the prepared cooling particles to polyester. Fabrics made entirely or primarily of polyester fiber not only have an instant and sustained cooling sensation, but also allow sweat to quickly wet the fabric. The sweat then forms capillary diffusion on the fabric surface and within the cooling particles. As the diffusion area increases, the sweat can quickly evaporate into the surrounding environment. The fabric wets, diffuses, and evaporates simultaneously, preventing the discomfort caused by clothing sticking to the body. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] The preparation method of pretreated mica sheets includes the following steps:

[0039] A1: The nano-mica sheets (purchased from Beijing Wuke Optoelectronic Technology Co., Ltd.) washed with isopropanol were placed in a 5wt% nitric acid aqueous solution and soaked at room temperature for 0.5h. After filtration, washing and drying, activated mica sheets were obtained.

[0040] A2: Prepare a 2wt% ethanol-water solution of 3-aminopropyltriethoxysilane by mixing 80mL ethanol, 20mL deionized water and 3-aminopropyltriethoxysilane, add 10g activated mica sheets, soak at room temperature for 1h, filter, wash and dry to obtain pretreated mica sheets.

[0041] The preparation method of cooling particles includes the following steps:

[0042] S1: 1g hexadecyltrimethylammonium bromide, 10g of pretreated mica flakes prepared in Example 1, 80mL of anhydrous ethanol, and 20mL of deionized water were added to the reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 9. 5g of tetraethyl orthosilicate and 1g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 18h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0043] S2: Add 5g sodium dodecyl sulfate and 1000mL deionized water to a reaction flask and stir. Mix 50g n-octadecane and 50g methyl palmitate, heat to 60℃, and then add to the reaction flask. Under stirring, add 10g modified particles and 500mL of 4wt% chitosan acetate solution with pH 5.5. Keep warm at 40℃ for 1h under stirring. Add 0.1g glutaraldehyde, keep warm at 45℃ for 1h, and dry to obtain core-shell particles.

[0044] S3: Add 1g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 100mL of tetrahydrofuran to a reaction vessel and disperse by ultrasonication. Add 10g of core-shell particles, control the temperature at 70℃, keep the reaction at this temperature for 4h, centrifuge, wash, and dry to obtain cooling particles.

[0045] Example 2

[0046] The preparation method of cooling particles includes the following steps:

[0047] S1: 1.2g of hexadecyltrimethylammonium bromide, 10g of pretreated mica sheets prepared in Example 1, 90mL of anhydrous ethanol, and 10mL of deionized water were added to a reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 10. 6g of tetraethyl orthosilicate and 1.2g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 24h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0048] S2: Add 8g sodium dodecyl sulfate and 1500mL deionized water to a reaction flask and stir. Mix 100g n-octadecane and 50g methyl palmitate, heat to 65℃, and then add to the reaction flask. Under stirring, add 10g modified particles and 700mL of 4wt% chitosan acetate solution with pH 5.5. Keep warm at 45℃ for 1.5h under stirring. Add 0.15g glutaraldehyde, keep warm at 50℃ for 1h, and dry to obtain core-shell particles.

[0049] S3: 1.3g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 150mL of tetrahydrofuran were added to the reactor and ultrasonically dispersed. 10g of core-shell particles were added, and the temperature was controlled at 75℃ for 6h. After centrifugation, washing and drying, cooling particles were obtained.

[0050] Example 3

[0051] The preparation method of cooling particles includes the following steps:

[0052] S1: 1.5g of hexadecyltrimethylammonium bromide, 10g of pretreated mica sheets prepared in Example 1, 90mL of anhydrous ethanol, and 20mL of deionized water were added to the reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 10. 7.5g of tetraethyl orthosilicate and 1.5g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 24h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0053] S2: Add 10g sodium dodecyl sulfate and 2000mL deionized water to a reaction flask and stir. Mix 150g n-octadecane and 50g methyl palmitate, heat to 70℃, and then add to the reaction flask. Under stirring, add 10g modified particles and 1000mL of 4wt% chitosan acetate solution (pH 5.5). Keep warm at 50℃ for 2 hours under stirring. Add 0.2g glutaraldehyde, keep warm at 55℃ for 2 hours, and then dry to obtain core-shell particles.

[0054] S3: 1.5g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 200mL of tetrahydrofuran were added to the reactor and ultrasonically dispersed. 10g of core-shell particles were added, and the temperature was controlled at 80℃. The reaction was kept at this temperature for 8h. After centrifugation, washing, and drying, the cooling particles were obtained.

[0055] Example 4

[0056] A method for preparing a moisture-wicking polyester fabric includes the following steps:

[0057] Hydroxyl-terminated polyester (purchased from Tianjin Petrochemical Fiber Plant, [η] = 0.66 dL / g) and the cooling particles prepared in Example 1 were blended, melt-spun, and post-treated to obtain a moisture-wicking polyester fiber with a cooling particle content of 10 wt%. The specific conditions for blending and melt spinning were: screw zone 1 temperature 275℃, zone 2 280℃, zone 3 285℃, zone 4 290℃, zone 5 285℃, zone 6 280℃, and chamber temperature 285℃.

[0058] The moisture-wicking polyester fiber was spun to obtain a unit mass of 220 g / m. 2 The fabric is made of moisture-wicking polyester.

[0059] Example 5

[0060] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Example 2. The remaining components and preparation methods are completely identical to those of Example 4.

[0061] Example 6

[0062] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Example 3. The remaining components and preparation methods are completely identical to those of Example 4.

[0063] Comparative Example 1

[0064] The preparation method of cooling particles includes the following steps:

[0065] S1: 1.2g of hexadecyltrimethylammonium bromide, 10g of pretreated mica sheets prepared in Example 1, 90mL of anhydrous ethanol, and 10mL of deionized water were added to a reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 10. 6g of tetraethyl orthosilicate and 1.2g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 24h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0066] S2: Add 8g sodium dodecyl sulfate and 1500mL deionized water to a reaction flask and stir. Mix 100g n-octadecane and 50g methyl palmitate, heat to 65℃, and then add to the reaction flask. Under stirring, add 10g modified particles and 700mL of 4wt% chitosan acetate solution with pH 5.5. Keep warm at 45℃ for 1.5h under stirring. Add 0.15g glutaraldehyde, keep warm at 50℃ for 1h, and dry to obtain cool-feeling particles.

[0067] Comparative Example 2

[0068] The preparation method of cooling particles includes the following steps:

[0069] S1: 1.2g of hexadecyltrimethylammonium bromide, 10g of pretreated mica sheets prepared in Example 1, 90mL of anhydrous ethanol, and 10mL of deionized water were added to a reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 10. 6g of tetraethyl orthosilicate and 1.2g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 24h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0070] S2: Add 8g sodium dodecyl sulfate and 1500mL deionized water to a reaction flask and stir. Mix 100g n-octadecane and 50g methyl palmitate, heat to 65℃ and then add to the reaction flask. Add 10g modified particles under stirring. Keep warm at 45℃ for 1.5h under stirring. Keep warm at 50℃ for 1h and then dry to obtain core-shell particles.

[0071] S3: 1.3g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 150mL of tetrahydrofuran were added to the reactor and ultrasonically dispersed. 10g of core-shell particles were added, and the temperature was controlled at 75℃ for 6h. After centrifugation, washing and drying, cooling particles were obtained.

[0072] Comparative Example 3

[0073] The preparation method of cooling particles includes the following steps:

[0074] S1: 1.2g of hexadecyltrimethylammonium bromide, 10g of pretreated mica sheets prepared in Example 1, 90mL of anhydrous ethanol, and 10mL of deionized water were added to a reaction vessel for dispersion. Sodium hydroxide was added to adjust the pH to 10. 6g of tetraethyl orthosilicate and 1.2g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40℃ and stirred for 24h. The mixture was centrifuged, washed to remove hexadecyltrimethylammonium bromide, and dried to obtain modified particles.

[0075] S2: Add 8g sodium dodecyl sulfate and 1500mL deionized water to a reaction flask and stir. Add 150g n-octadecane after mixing and heating to 65℃, then add to the reaction flask. Under stirring, add 10g modified particles and 700mL of 4wt% chitosan acetate solution with pH 5.5. Keep the temperature at 45℃ and stirring for 1.5h. Add 0.15g glutaraldehyde, keep the temperature at 50℃ and cure for 1h. Dry to obtain core-shell particles.

[0076] S3: 1.3g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 150mL of tetrahydrofuran were added to the reactor and ultrasonically dispersed. 10g of core-shell particles were added, and the temperature was controlled at 75℃ for 6h. After centrifugation, washing and drying, cooling particles were obtained.

[0077] Comparative Example 4

[0078] The preparation method of cooling particles includes the following steps:

[0079] S1: Add 8g sodium dodecyl sulfate and 1500mL deionized water to a reaction flask and stir. Mix 100g n-octadecane and 50g methyl palmitate, heat to 65°C, and then add to the reaction flask. Under stirring, add 10g of the pretreated mica sheet prepared in Example 1 and 700mL of 4wt% chitosan acetate solution with pH 5.5. Keep warm at 45°C for 1.5h under stirring. Add 0.15g glutaraldehyde, keep warm at 50°C for 1h, and dry to obtain core-shell particles.

[0080] S2: 1.3g of carboxycellulose nanocrystals (carboxyl content 1.4mmol / g) and 150mL of tetrahydrofuran were added to the reactor and ultrasonically dispersed. 10g of core-shell particles were added, and the temperature was controlled at 75℃ for 6h. After centrifugation, washing and drying, cooling particles were obtained.

[0081] Comparative Example 5

[0082] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Comparative Example 1. The remaining components and preparation methods are completely identical to those of Example 4.

[0083] Comparative Example 6

[0084] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Comparative Example 2. The remaining components and preparation methods are completely identical to those of Example 4.

[0085] Comparative Example 7

[0086] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Comparative Example 3. The remaining components and preparation methods are completely identical to those of Example 4.

[0087] Comparative Example 8

[0088] A moisture-wicking polyester fabric is prepared in a manner that differs from that of Example 4, except that the cooling particles prepared in Example 1 are replaced in equal amounts with the cooling particles prepared in Comparative Example 4, while the remaining components and preparation methods are completely identical to those of Example 4.

[0089] Performance testing:

[0090] (1) Continuous cooling performance upon contact: The test was conducted according to GB / T 35263-2017 "Test and evaluation of instantaneous cooling performance of textiles upon contact", with Roaches Q-Max as the testing instrument and polystyrene foam as the sample stage; the experimental conditions were: 20.1℃, humidity 65.1%, hot plate temperature 35℃, cold plate temperature 20℃, and the contact cooling coefficient of the material was tested; the fabrics prepared in Examples 4-6 and Comparative Examples 5-8 were washed 10 times according to the 4N procedure and hung to dry according to GB / T 8629-2017 "Domestic washing and drying procedures for textile testing", and the contact cooling coefficient was tested again; the test results are shown in Table 1;

[0091] Table 1: Statistical Table of Cooling Performance Test Data for Examples 4-6 and Comparative Examples 5-8

[0092]

[0093] As shown in Table 1, the experimental data indicate that the contact cooling coefficients of Examples 4-6 range from 0.23 to 0.27 J / (cm²). 2 The concentrations were between 0.14 and 0.19 J / (cm³), significantly higher than the 0.14–0.19 J / (cm³) in comparative examples 5–8. 2 The sample exhibits a good cooling sensation upon contact; even after 10 washes, the sample still maintains a high cooling coefficient (0.21-0.25 J / (cm²)). 2 The concentration of J / (cm³) generally decreased to 0.09-0.14 J / (cm³). 2 The result (˙s) indicates that the cooling performance of the comparative sample is significantly reduced, and the long-lasting cooling performance is poor.

[0094] (2) Moisture absorption and wicking properties: The fabrics prepared in Examples 4-6 and Comparative Examples 5-8 were tested according to GB / T 21655.2-2019 "Evaluation of moisture absorption and quick-drying properties of textiles - Part 2: Dynamic moisture transfer method", and the judgment criteria are shown in Table 2; The fabrics prepared in Examples 4-6 and Comparative Examples 5-8 were washed 5 times according to the 4N program and hung to dry according to GB / T 8629-2017 "Home washing and drying procedures for textile testing", and tested again; The test results are shown in Table 3-4;

[0095] Table 2: Criteria for Judging Moisture Absorption and Quick-Drying Properties

[0096]

[0097] Table 3: Statistical Table of Moisture Absorption Performance Test Data for Examples 4-6 and Comparative Examples 5-8

[0098]

[0099] As shown in Table 3, the experimental data show that the fabrics prepared in Examples 4-6 of this invention have shorter wetting times and higher water absorption rates, which are better than the fabrics prepared in Comparative Examples 5-8. The wetting time of Examples 4-6 is controlled at 3.3-3.5 seconds, and the wetting speed of the fabrics is fast, all reaching level 4 performance; while the wetting time of the fabrics in Comparative Examples 5-8 is all more than 5 seconds, and the wetting efficiency is significantly lagging.

[0100] Regarding the water absorption rate, the fabrics prepared in Examples 4-6 all maintained a water absorption rate above 43.5%, with the water absorption rate of the permeable surface reaching 55.5-57.3% / s, significantly higher than the maximum value of the comparative example (49.3% / s). Therefore, the fabric samples prepared in the embodiments of this invention possess excellent moisture absorption properties.

[0101] Table 4: Statistical Table of Sweat-wicking Performance Test Data for Examples 4-6 and Comparative Examples 5-8

[0102]

[0103] As shown in Table 4, the experimental results indicate that the maximum wetting radius on the soaking surface of Examples 4-6 all reached over 18.0 mm, and the liquid water diffusion rate was 3.6-3.8 mm / s. Both indicators were rated as level 4, demonstrating excellent lateral diffusion performance of liquid water, which can achieve rapid moisture conduction and help achieve quick drying of the fabric.

[0104] In contrast, the maximum wettability radius of comparative examples 5-8 was only 11.1-13.2 mm, and the diffusion rate was only 2.0-2.8 mm / s. The samples only reached level 3, with low moisture diffusion efficiency, which affected the overall moisture absorption and wicking performance.

[0105] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A moisture-wicking polyester fabric, characterized in that, The fabric comprises moisture-wicking polyester fiber; the moisture-wicking polyester fiber contains 5-12 wt% cooling particles; The method for preparing the cooling particles includes the following steps: S1: Add template agent, pretreated mica flakes, anhydrous ethanol, and deionized water to a reaction vessel and disperse them. Adjust the pH to 9-10, add tetraethyl orthosilicate and 3-aminopropyltriethoxysilane, control the temperature at 40-45℃, keep warm and stir for 18-24h, centrifuge, wash to remove template agent, and dry to obtain modified particles. S2: Add sodium dodecyl sulfate and deionized water to a reaction flask and stir. Mix n-octadecane with methyl palmitate and heat to 60-70℃ before adding to the reaction flask. Add modified particles and chitosan acetate solution under stirring. Control the temperature at 40-50℃ and keep warm for 1-2 hours under stirring. Add glutaraldehyde and control the temperature at 45-55℃. Keep warm and cure for 1-2 hours. Dry to obtain core-shell particles. S3: Carboxycellulose nanocrystals and tetrahydrofuran were added to a reaction vessel and ultrasonically dispersed. Core-shell particles were added, and the temperature was controlled at 70-80℃. The reaction was kept at this temperature for 4-8 hours. After centrifugation, washing, and drying, cooling particles were obtained. The template agent mentioned in S1 is hexadecyltrimethylammonium bromide; The method for preparing the pretreated mica sheet includes the following steps: A1: The nano-mica sheets washed with isopropanol were placed in dilute nitric acid and soaked at room temperature for 0.5-1 h. After filtration, washing and drying, activated mica sheets were obtained. A2: Place the activated mica sheets in a silane coupling agent solution and immerse them at room temperature for 0.5-1 hour. Then filter, wash, and dry to obtain pretreated mica sheets. S2 contains a 2-4 wt% chitosan acetate solution with a pH of 5.

5. The addition ratio of sodium dodecyl sulfate, deionized water, n-octadecane, methyl palmitate, modified particles, chitosan acetate solution, and glutaraldehyde is 0.5g-1g: 100mL-200mL: 5-15g: 5g: 1g: 50-100mL: 0.01-0.02g.

2. The moisture-wicking polyester fabric according to claim 1, characterized in that, The addition ratio of template agent, pretreated mica sheet, anhydrous ethanol, deionized water, tetraethyl orthosilicate, and 3-aminopropyltriethoxysilane is 1-1.5g: 10g: 80-90mL: 10-20mL: 5-7.5g: 1-1.5g.

3. The moisture-wicking polyester fabric according to claim 1, characterized in that, The addition ratio of carboxycellulose nanocrystals, tetrahydrofuran, and core-shell particles in S3 is 1-1.5g: 100-200mL: 10g.

4. The moisture-wicking polyester fabric according to claim 1, characterized in that, The dilute nitric acid is a 5-8 wt% aqueous nitric acid solution; The silane coupling agent solution is an aqueous solution of 1-2 wt% 3-aminopropyltriethoxysilane in ethanol; the volume ratio of ethanol to water is 4-5:1; the mass ratio of activated mica flakes to 3-aminopropyltriethoxysilane is 1:0.1-0.

3.

5. The moisture-wicking polyester fabric according to claim 1, characterized in that, The preparation method of the moisture-wicking polyester fiber includes the following steps: blending hydroxyl-terminated polyester and cooling particles into a melt-spun mixture, followed by post-treatment to obtain the moisture-wicking polyester fiber.

6. The moisture-wicking polyester fabric according to claim 5, characterized in that, The specific conditions for the blend melt spinning are as follows: screw zone 1 temperature 275-280℃, zone 2 280-285℃, zone 3 285-290℃, zone 4 290-295℃, zone 5 285-290℃, zone 6 280-285℃, and chamber temperature 280-285℃.

7. The moisture-wicking polyester fabric according to claim 5, characterized in that, The specific steps of the post-processing are as follows: stretching temperature 60-65℃, total stretching ratio 3.2-3.6 times, and heat setting temperature 175-180℃.

8. The method for preparing the moisture-wicking polyester fabric according to any one of claims 1-7, characterized in that, Moisture-wicking polyester fibers are woven to obtain moisture-wicking polyester fabric.

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