Moisture-absorbing sweat-guiding polyester fabric and preparation method thereof

Abstract

The invention discloses a moisture-absorbing and sweat-guiding polyester fabric and a preparation method thereof, and relates to the technical field of high-performance fiber fabrics. The invention discloses a moisture-absorbing and sweat-guiding polyester fabric which comprises moisture-absorbing and sweat-guiding polyester fibers. The moisture-absorbing and sweat-guiding polyester fiber contains 5-12wt% of cool-feeling particles; the preparation method comprises the following steps: firstly, depositing mesoporous silica on the surface of a base material by using a pretreated mica sheet to obtain modified particles; coating the modified particles with a binary phase change material to obtain core-shell particles; and finally, carrying out hydrophilic treatment on the surfaces of the core-shell particles to obtain the cool-feeling particles. The cool particles are added into polyester, so that the polyester material is endowed with instantaneous cool performance, and the polyester is endowed with moisture absorption and sweat guide performance. The polyester fabric prepared by weaving the moisture-absorbing and sweat-guiding polyester fibers has good wearability.

Description

Technical Field

[0001] The invention relates to the technical field of high-performance fiber fabrics, and in particular to a moisture-absorbing and sweat-conducting polyester fabric and a preparation method thereof. Background Art

[0002] As people's lifestyles prioritize health and comfort, and exercise trends become a mainstream fashion trend, demand for comfortable sportswear is increasing, placing higher demands on the moisture-wicking and perspiration-dispersing properties of clothing fabrics. Natural fibers have good moisture absorption and are comfortable to wear. However, when sweat is produced in high volumes, the sweat cannot be removed quickly, causing clothing to cling to the body and cause discomfort. Chemical fibers have advantages over natural fibers in terms of moisture-wicking and moisture-dispersing properties. Polyester fiber, one of the most widely produced chemical fibers in China and abroad, boasts excellent fiber-forming and mechanical properties and is highly favored for its easy-to-wash, quick-drying, and crisp feel. However, polyester fiber is a highly crystalline fiber with no hydrophilic functional groups on its molecular backbone, making it hydrophobic. This results in poor moisture-wicking properties, and fabrics made from it have poor breathability. This is especially true when sweating, resulting in a stuffy and uncomfortable feeling. Polyester fiber's poor moisture absorption also presents a series of weaving challenges, such as static electricity accumulation, dust attraction, and difficulty removing oil stains.

[0003] A fiber's moisture wicking properties depend on its chemical and physical structure. Vaporous moisture evaporated from the skin's surface is first absorbed by the fiber material and then released through the material's surface. The capillary effect created by the fiber's internal pores (capillaries, micropores, grooves) and the interstices between fibers also allows moisture to be absorbed, diffused, and released within the fiber. These two processes result in moisture migration, the former primarily related to the chemical structure of the fiber's macromolecules, while the latter is related to the fiber's surface structure. Polyester fiber is the largest synthetic fiber type today, and improving its moisture wicking properties is a topic of interest to researchers both domestically and internationally. When human sweat (in either vapor or liquid phase) comes into contact with a fabric, it first wets the fabric. The sweat then conducts and diffuses through the interstices between the fibers or through the fibers themselves. Evaporation and diffusion, driven by forces such as the humidity difference between the sweat and the surrounding environment, allow the fabric to dry quickly, thereby improving the comfort of the garment. However, for polyester fibers that lack polar hydrophilic groups, it is almost impossible for the fabric to be wetted by water. Prior to this, many related studies have based their basic idea on making polyester fibers into special-shaped fibers such as hollow, Y-shaped, +-shaped, and W-shaped. Although the large specific area of ​​special-shaped fibers makes them more conducive to wetting than circular cross-sections, the fiber surface lacks hydrophilic groups, and the wettability of the fabric to water is still insufficient. Summary of the Invention

[0004] The purpose of the present invention is to provide a moisture-absorbing and sweat-conducting polyester fabric and a preparation method thereof, to solve the following technical problems: Existing technology increases the specific surface area of ​​the material and improves the wettability of polyester by making polyester fibers into special-shaped fibers. However, the fibers themselves lack hydrophilic groups, and the moisture absorption and sweat conduction properties of the fabric are still poor.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A moisture-absorbing and sweat-conducting polyester fabric, comprising a moisture-absorbing and sweat-conducting polyester fiber; the moisture-absorbing and sweat-conducting polyester fiber contains 5-12 wt% of cooling particles; The preparation method of the cooling particles comprises the following steps: S1: Add the template agent, pretreated mica sheets, anhydrous ethanol, and deionized water into a reactor and disperse them. Adjust the pH to 9-10, add tetraethyl orthosilicate and 3-aminopropyltriethoxysilane, control the temperature to 40-45°C, keep warm and stir for 18-24 hours, centrifuge, wash to remove the template agent, and dry to obtain modified particles. S2: Sodium lauryl sulfate and deionized water were added to a reaction flask and stirred. Octadecane and methyl palmitate were mixed and heated to 60-70°C before being added to the reaction flask. Modified particles and chitosan acetate solution were added under stirring. The temperature was controlled at 40-50°C and kept under stirring for 1-2 hours. Glutaraldehyde was added and the temperature was controlled at 45-55°C. The mixture was kept under stirring for 1-2 hours to cure. The mixture was then dried to obtain core-shell particles. S3: Carboxycellulose nanocrystals and tetrahydrofuran are added to a reactor for ultrasonic dispersion, core-shell particles are added, the temperature is controlled at 70-80°C, the reaction is kept warm for 4-8 hours, centrifuged, washed, and dried to obtain cooling particles.

[0006] As a further embodiment of the present invention: the template agent in S1 is hexadecyltrimethylammonium bromide; The addition ratio of the template agent, pretreated mica sheet, anhydrous ethanol, deionized water, tetraethyl orthosilicate, and 3-aminopropyltriethoxysilane is 1-1.5 g: 10 g: 80-90 mL: 10-20 mL: 5-7.5 g: 1-1.5 g.

[0007] As a further embodiment of the present invention: the chitosan acetate solution in S2 is a 2-4 wt% chitosan acetate solution with a pH of 5.5; The addition ratio of sodium lauryl sulfate, deionized water, n-octadecane, methyl palmitate, modified particles, chitosan acetic acid solution, and glutaraldehyde is 0.5 g-1 g: 100 mL-200 mL: 5-15 g: 5 g: 1 g: 50-100 mL: 0.01-0.02 g.

[0008] As a further embodiment of the present invention, the addition ratio of carboxycellulose nanocrystals, tetrahydrofuran, and core-shell particles in S3 is 1-1.5 g: 100-200 mL: 10 g.

[0009] As a further embodiment of the present invention, the method for preparing the pretreated mica sheet comprises the following steps: A1: Place the nano-mica flakes washed with isopropyl alcohol in dilute nitric acid and soak at room temperature for 0.5-1 hour. Filter, wash, and dry to obtain activated mica flakes. A2: Place the activated mica sheet in a silane coupling agent solution, immerse it at room temperature for 0.5-1 hour, filter, wash, and dry to obtain a pretreated mica sheet.

[0010] As a further embodiment of the present invention: the dilute nitric acid is a 5-8 wt% nitric acid aqueous solution; The silane coupling agent solution is an ethanol aqueous solution containing 1-2wt% 3-aminopropyltriethoxysilane; the volume ratio of ethanol to water is 4-5:1; and the mass ratio of activated mica flakes to 3-aminopropyltriethoxysilane is 1:0.1-0.3.

[0011] As a further solution of the present invention: the preparation method of the moisture-absorbing and sweat-conducting polyester fiber comprises the following steps: blending the hydroxyl-terminated polyester and the cooling particles through melt spinning, and post-treating to obtain the moisture-absorbing and sweat-conducting polyester fiber.

[0012] As a further solution of the present invention: the specific conditions for blending melt spinning are: screw zone 1 temperature 275-280°C, zone 2 280-285°C, zone 3 285-290°C, zone 4 290-295°C, zone 5 285-290°C, zone 6 280-285°C, and box 280-285°C.

[0013] As a further solution of the present invention: the specific steps of post-treatment are: stretching temperature 60-65°C, total stretching ratio 3.2-3.6 times, and heat setting temperature 175-180°C.

[0014] In the preparation method of any of the above-mentioned moisture-absorbing and sweat-conducting polyester fabrics, the moisture-absorbing and sweat-conducting polyester fibers are woven to obtain the moisture-absorbing and sweat-conducting polyester fabric.

[0015] As a further solution of the present invention: the moisture-absorbing and sweat-conducting fabric can also be prepared by blending the moisture-absorbing and sweat-conducting polyester fiber with other fibers, and the other fibers can be chemical fibers or natural fibers.

[0016] Beneficial effects of the present invention: (1) Improve the cooling effect and moisture absorption of mica powder The present invention uses KH550 to perform surface treatment on mica sheets, grafts organic silicon molecular chains and amino groups on the surfaces of the mica sheets, and obtains pretreated mica sheets. The present invention then uses ethyl orthosilicate as a raw material and the pretreated mica sheets as a substrate to perform a soft template reaction, and deposits mesoporous silica on the surfaces of the mica sheets. The mesoporous silica in the mica sheet layers and on the surface can not only increase the amount of sweat adsorbed by its high specific area, but also conduct moisture directionally through the capillary effect. Moreover, the mesoporous silica can effectively achieve dynamic humidity balance when the humidity is high, thereby ensuring a sustained cooling sensation.

[0017] (2) Constructing a core-shell structure to give the fabric multiple functions This application uses an n-octadecane-methyl palmitate eutectic system as a binary phase change material, fixes the binary phase change material on the surface of the modified particles, and uses chitosan to induce electrostatic adsorption and glutaraldehyde to solidify and cross-link, thereby improving the uniformity and heat resistance of the shell layer to obtain core-shell particles; wherein, when body temperature rises, the binary phase change material absorbs heat, accelerating the extraction and drying of sweat. This application uses the binary phase change material to make the material molecules more loosely arranged, increase the energy storage density, and enhance the heat absorption capacity.

[0018] This application utilizes amino groups on the surface of core-shell particles to react with the carboxyl groups of carboxycellulose nanocrystals to form an amide layer, coating the core-shell particles with a hydrophilic layer. The mica core rapidly conducts heat, the phase-change shell absorbs heat and stores energy, and the hydrophilic layer instantly conducts moisture. This "core-shell energy storage + surface moisture conduction" structural design overcomes the bottleneck of traditional cooling materials, which suffer from the incompatibility between hydrophobicity and hygroscopicity.

[0019] (3) Water-resistant performance to achieve function The hydrophilic layer on the surface of the cooling particles prepared in the present application is composed of carboxycellulose nanocrystals, which are integrated with the end-hydroxyl polyester slices for cross-linking to achieve a stable combination of the cooling particles and the polyester matrix, thereby improving the washability of the functional fiber and the durability of the cooling, moisture absorption and sweat conduction properties of the fabric.

[0020] In summary, the present invention prepares a moisture-absorbing and quick-drying polyester fiber by adding the prepared cooling particles to polyester. The fabric prepared with polyester fiber as the entire material or as the main material not only has an instantaneous cooling feeling and a continuous cooling feeling; but also sweat can quickly moisten the fabric and form capillary diffusion of sweat on the surface of the fabric and the cooling particles inside. As the diffusion area increases, sweat can quickly evaporate to the surrounding environment, while wetting, diffusing, and evaporating, and there will be no discomfort caused by clothing sticking to the body. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1 The preparation method of the pretreated mica sheet comprises the following steps: A1: Nano-mica flakes (purchased from Beijing Wuke Optoelectronics Technology Co., Ltd.) washed with isopropyl alcohol were placed in a 5 wt% nitric acid aqueous solution at room temperature for 0.5 h, filtered, washed, and dried to obtain activated mica flakes; A2: Prepare a 2 wt% 3-aminopropyltriethoxysilane ethanol-water solution by adding 80 mL of ethanol, 20 mL of deionized water, and 3-aminopropyltriethoxysilane. Add 10 g of activated mica flakes and immerse them at room temperature for 1 hour. Filter, wash, and dry to obtain pretreated mica flakes.

[0023] The preparation method of the cooling particles comprises the following steps: S1: 1 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 80 mL of anhydrous ethanol, and 20 mL of deionized water were added to a reactor and dispersed. Sodium hydroxide was added to adjust the pH to 9. 5 g of tetraethyl orthosilicate and 1 g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40° C. and the mixture was stirred for 18 h. The mixture was centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles. S2: 5 g of sodium lauryl sulfate and 1000 mL of deionized water were added to a reaction flask and stirred. 50 g of n-octadecane and 50 g of methyl palmitate were mixed and heated to 60°C before being added to the reaction flask. 10 g of modified particles and 500 mL of a 4 wt% chitosan acetate solution with a pH of 5.5 were added under stirring. The temperature was controlled at 40°C and kept stirring for 1 h. 0.1 g of glutaraldehyde was added, the temperature was controlled at 45°C, kept warm for 1 h, and dried to obtain core-shell particles. S3: 1 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 100 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 70°C, the reaction was kept warm for 4 h, centrifuged, washed, and dried to obtain cooling particles.

[0024] Example 2 The preparation method of the cooling particles comprises the following steps: S1: 1.2 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 90 mL of anhydrous ethanol, and 10 mL of deionized water were added to a reaction kettle for dispersion, sodium hydroxide was added to adjust the pH to 10, 6 g of tetraethyl orthosilicate and 1.2 g of 3-aminopropyltriethoxysilane were added, the temperature was controlled at 40° C., the mixture was kept warm and stirred for 24 h, centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles; S2: 8 g of sodium lauryl sulfate and 1500 mL of deionized water were added to a reaction flask and stirred. 100 g of n-octadecane and 50 g of methyl palmitate were mixed and heated to 65°C before being added to the reaction flask. 10 g of modified particles and 700 mL of a 4 wt% chitosan acetate solution with a pH of 5.5 were added under stirring. The temperature was controlled at 45°C and kept stirring for 1.5 h. 0.15 g of glutaraldehyde was added, the temperature was controlled at 50°C, kept warm for 1 h, and dried to obtain core-shell particles. S3: 1.3 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 150 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 75°C, the reaction was kept warm for 6 h, centrifuged, washed, and dried to obtain cooling particles.

[0025] Example 3 The preparation method of the cooling particles comprises the following steps: S1: 1.5 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 90 mL of anhydrous ethanol, and 20 mL of deionized water were added to a reactor and dispersed. Sodium hydroxide was added to adjust the pH to 10. 7.5 g of tetraethyl orthosilicate and 1.5 g of 3-aminopropyltriethoxysilane were added. The temperature was controlled at 40° C. and the mixture was stirred for 24 h. The mixture was centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles. S2: 10 g of sodium lauryl sulfate and 2000 mL of deionized water were added to a reaction flask and stirred. 150 g of n-octadecane and 50 g of methyl palmitate were mixed and heated to 70°C before being added to the reaction flask. 10 g of modified particles and 1000 mL of a 4 wt% chitosan acetate solution with a pH of 5.5 were added under stirring. The temperature was controlled at 50°C and kept stirring for 2 h. 0.2 g of glutaraldehyde was added, the temperature was controlled at 55°C, kept warm for 2 h, and dried to obtain core-shell particles. S3: 1.5 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 200 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 80°C, the reaction was kept warm for 8 hours, centrifuged, washed, and dried to obtain cooling particles.

[0026] Example 4 A method for preparing a moisture-absorbing and sweat-conducting polyester fabric comprises the following steps: Hydroxyl-terminated polyester (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and the cooling particles prepared in Example 1 were blended and melt-spun, followed by post-treatment to produce a moisture-absorbing and sweat-wicking polyester fiber containing 10 wt% of the cooling particles. The specific conditions for the blended melt spinning were: screw zone 1 at 275°C, zone 2 at 280°C, zone 3 at 285°C, zone 4 at 290°C, zone 5 at 285°C, zone 6 at 280°C, and the box at 285°C. The moisture-absorbing and sweat-conducting polyester fiber is spun to obtain a unit mass of 220g / m 2 Moisture-wicking polyester fabric.

[0027] Example 5 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with that of Example 4, wherein only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Example 2 in equal amounts, and the remaining components and preparation method are completely consistent with those of Example 4.

[0028] Example 6 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with that of Example 4, wherein only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Example 3 in equal amounts, and the remaining components and preparation method are completely consistent with those of Example 4.

[0029] Comparative Example 1 The preparation method of the cooling particles comprises the following steps: S1: 1.2 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 90 mL of anhydrous ethanol, and 10 mL of deionized water were added to a reaction kettle for dispersion, sodium hydroxide was added to adjust the pH to 10, 6 g of tetraethyl orthosilicate and 1.2 g of 3-aminopropyltriethoxysilane were added, the temperature was controlled at 40° C., the mixture was kept warm and stirred for 24 h, centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles; S2: Add 8g of sodium dodecyl sulfate and 1500mL of deionized water to a reaction flask and stir. Blend 100g of n-octadecane and 50g of methyl palmitate, heat to 65°C, and then add to the reaction flask. Add 10g of modified particles and 700mL of 4wt% chitosan acetic acid solution with a pH of 5.5 under stirring. Control the temperature at 45°C and keep warm for 1.5h under stirring. Add 0.15g of glutaraldehyde, control the temperature at 50°C, keep warm and cure for 1h, and dry to obtain cooling particles.

[0030] Comparative Example 2 The preparation method of the cooling particles comprises the following steps: S1: 1.2 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 90 mL of anhydrous ethanol, and 10 mL of deionized water were added to a reaction kettle for dispersion, sodium hydroxide was added to adjust the pH to 10, 6 g of tetraethyl orthosilicate and 1.2 g of 3-aminopropyltriethoxysilane were added, the temperature was controlled at 40° C., the mixture was kept warm and stirred for 24 h, centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles; S2: 8 g of sodium dodecyl sulfate and 1500 mL of deionized water were added to a reaction flask and stirred. 100 g of n-octadecane and 50 g of methyl palmitate were mixed and heated to 65°C before being added to the reaction flask. 10 g of modified particles were added under stirring. The temperature was controlled at 45°C and kept under stirring for 1.5 h. The temperature was controlled at 50°C and kept under stirring for 1 h, and then dried to obtain core-shell particles. S3: 1.3 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 150 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 75°C, the reaction was kept warm for 6 h, centrifuged, washed, and dried to obtain cooling particles.

[0031] Comparative Example 3 The preparation method of the cooling particles comprises the following steps: S1: 1.2 g of hexadecyltrimethylammonium bromide, 10 g of the pretreated mica flakes prepared in Example 1, 90 mL of anhydrous ethanol, and 10 mL of deionized water were added to a reaction kettle for dispersion, sodium hydroxide was added to adjust the pH to 10, 6 g of tetraethyl orthosilicate and 1.2 g of 3-aminopropyltriethoxysilane were added, the temperature was controlled at 40° C., the mixture was kept warm and stirred for 24 h, centrifuged, washed to remove the hexadecyltrimethylammonium bromide, and dried to obtain modified particles; S2: 8 g of sodium dodecyl sulfate and 1500 mL of deionized water were added to a reaction flask and stirred. 150 g of n-octadecane was mixed and heated to 65°C before being added to the reaction flask. 10 g of modified particles and 700 mL of a 4 wt% chitosan acetate solution with a pH of 5.5 were added under stirring. The temperature was controlled at 45°C and kept stirring for 1.5 h. 0.15 g of glutaraldehyde was added, the temperature was controlled at 50°C, kept warm for 1 h, and dried to obtain core-shell particles. S3: 1.3 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 150 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 75°C, the reaction was kept warm for 6 h, centrifuged, washed, and dried to obtain cooling particles.

[0032] Comparative Example 4 The preparation method of the cooling particles comprises the following steps: S1: 8 g of sodium lauryl sulfate and 1500 mL of deionized water were added to a reaction flask and stirred. 100 g of n-octadecane and 50 g of methyl palmitate were blended and heated to 65° C. and then added to the reaction flask. 10 g of the pretreated mica flakes prepared in Example 1 and 700 mL of a 4 wt% chitosan acetate solution with a pH of 5.5 were added under stirring. The temperature was controlled at 45° C. and kept stirring for 1.5 h. 0.15 g of glutaraldehyde was added, the temperature was controlled at 50° C., the mixture was kept warm for 1 h, and dried to obtain core-shell particles. S2: 1.3 g of carboxycellulose nanocrystals (carboxyl content 1.4 mmol / g) and 150 mL of tetrahydrofuran were added to a reactor for ultrasonic dispersion, 10 g of core-shell particles were added, the temperature was controlled at 75°C, the reaction was kept warm for 6 h, centrifuged, washed, and dried to obtain cooling particles.

[0033] Comparative Example 5 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with Example 4, only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Comparative Example 1 in equal amounts, and the remaining components and preparation method are completely consistent with Example 4.

[0034] Comparative Example 6 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with that of Example 4, wherein only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Comparative Example 2 in equal amounts, and the remaining components and preparation method are completely consistent with those of Example 4.

[0035] Comparative Example 7 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with Example 4, only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Comparative Example 3 in equal amounts, and the remaining components and preparation method are completely consistent with Example 4.

[0036] Comparative Example 8 A moisture-absorbing and sweat-conducting polyester fabric, the preparation method of which is compared with that of Example 4, wherein only the cooling particles prepared in Example 1 used in Example 4 are replaced by the cooling particles prepared in Comparative Example 4 in equal amounts, and the remaining components and preparation method are completely consistent with those of Example 4.

[0037] Performance testing: (1) Continuous contact cooling performance: The test was conducted according to GB / T 35263-2017 "Test and evaluation of instantaneous cooling performance of textiles", using Roaches Q-Max as the test instrument and polystyrene foam as the sample carrier; experimental conditions: 20.1°C, humidity 65.1%, hot plate temperature 35°C, cold plate temperature 20°C, and the contact cooling coefficient of the test material; washing was carried out according to GB / T 8629-2017 "Household washing and drying procedures for textile testing", washing the fabrics prepared in Examples 4-6 and Comparative Examples 5-8 10 times according to the 4N procedure, hanging them to dry, and then testing the contact cooling coefficient again; the test results are shown in Table 1; Table 1: Statistical table of cooling performance test data of Examples 4-6 and Comparative Examples 5-8

[0038] As shown in Table 1, the experimental data show that the contact cooling coefficient of Examples 4-6 is between 0.23-0.27 J / (cm 2 ˙s), which is significantly higher than the 0.14-0.19 J / (cm2) of Comparative Examples 5-8. 2 ˙s), showing a good contact cool feeling; even after 10 washes, the embodiment still maintains a high contact cool coefficient (0.21-0.25J / (cm 2 ˙s)), while the control group generally dropped to 0.09-0.14J / (cm 2 ˙s), indicating that the cooling performance of the comparative example is obviously attenuated and the long-lasting cooling performance is poor.

[0039] (2) Moisture absorption and perspiration conduction performance: 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”. 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 procedure according to GB / T 8629-2017 “Household Washing and Drying Procedure for Textile Testing”, hung to dry, and tested again. The test results are shown in Tables 3-4. Table 2: Moisture absorption and quick-drying judgment criteria

[0040] Table 3: Statistical table of moisture absorption performance test data of Examples 4-6 and Comparative Examples 5-8

[0041] As can be seen from Table 3, the experimental data show that the fabrics prepared in Examples 4-6 of the present invention have a short wetting time and a high water absorption rate, which are superior to the fabrics prepared in Comparative Examples 5-8. The wetting time of Examples 4-6 is controlled within 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 more than 5 seconds, and the wetting efficiency is significantly lagging behind.

[0042] In terms of water absorption rate, the fabrics prepared in Examples 4-6 all maintained a water absorption rate above 43.5%, with the permeable surface reaching a water absorption rate of 55.5-57.3% / s, significantly higher than the maximum value of 49.3% / s in the comparative example. This demonstrates that the fabric samples prepared in Examples of the present invention possess excellent moisture absorption properties.

[0043] Table 4: Statistical table of sweat conduction performance test data of Examples 4-6 and Comparative Examples 5-8

[0044] As can be seen from Table 4, the experimental results show that the maximum wetting radius of Examples 4-6 on the penetration surface all reached more than 18.0 mm, and the liquid water diffusion rate was 3.6-3.8 mm / s. Both indicators were rated as level 4, showing excellent liquid water lateral diffusion performance, which can achieve rapid moisture conduction and help to achieve quick drying of the fabric.

[0045] In comparison, the maximum wetting radius of comparative examples 5-8 is only 11.1-13.2 mm, and the diffusion speed is only 2.0-2.8 mm / s. The samples only reach level 3, and the moisture diffusion efficiency is low, which affects the overall moisture absorption and sweat conduction performance.

[0046] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A moisture-absorbing and sweat-conducting polyester fabric, characterized in that: The fabric comprises a moisture-absorbing and sweat-conducting polyester fiber; the moisture-absorbing and sweat-conducting polyester fiber contains 5-12 wt% of cooling particles; The preparation method of the cooling particles comprises the following steps: S1: Add the template agent, pretreated mica sheets, anhydrous ethanol, and deionized water into a reactor and disperse them. Adjust the pH to 9-10, add tetraethyl orthosilicate and 3-aminopropyltriethoxysilane, control the temperature to 40-45°C, keep warm and stir for 18-24 hours, centrifuge, wash to remove the template agent, and dry to obtain modified particles. S2: Sodium lauryl sulfate and deionized water were added to a reaction flask and stirred. Octadecane and methyl palmitate were mixed and heated to 60-70°C before being added to the reaction flask. Modified particles and chitosan acetate solution were added under stirring. The temperature was controlled at 40-50°C and kept under stirring for 1-2 hours. Glutaraldehyde was added and the temperature was controlled at 45-55°C. The mixture was kept under stirring for 1-2 hours to cure. The mixture was then dried to obtain core-shell particles. S3: Carboxycellulose nanocrystals and tetrahydrofuran are added to a reactor for ultrasonic dispersion, core-shell particles are added, the temperature is controlled at 70-80°C, the reaction is kept warm for 4-8 hours, centrifuged, washed, and dried to obtain cooling particles.

2. The moisture-absorbing and sweat-conducting polyester fabric according to claim 1, characterized in that: The template agent in S1 is hexadecyltrimethylammonium bromide; The addition ratio of the template agent, pretreated mica sheet, anhydrous ethanol, deionized water, tetraethyl orthosilicate, and 3-aminopropyltriethoxysilane is 1-1.5 g: 10 g: 80-90 mL: 10-20 mL: 5-7.5 g: 1-1.5 g.

3. The moisture-absorbing and sweat-conducting polyester fabric according to claim 1, characterized in that: The chitosan acetate solution in S2 is a 2-4 wt% chitosan acetate solution with a pH of 5.5; The addition ratio of sodium lauryl sulfate, deionized water, n-octadecane, methyl palmitate, modified particles, chitosan acetic acid solution, and glutaraldehyde is 0.5 g-1 g: 100 mL-200 mL: 5-15 g: 5 g: 1 g: 50-100 mL: 0.01-0.02 g.

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

5. The moisture-absorbing and sweat-conducting polyester fabric according to claim 1, characterized in that: The preparation method of the pretreated mica sheet comprises the following steps: A1: Place the nano-mica flakes washed with isopropyl alcohol in dilute nitric acid and soak at room temperature for 0.5-1 hour. Filter, wash, and dry to obtain activated mica flakes. A2: Place the activated mica sheet in a silane coupling agent solution, immerse it at room temperature for 0.5-1 hour, filter, wash, and dry to obtain a pretreated mica sheet.

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

3.

7. The moisture-absorbing and sweat-conducting polyester fabric according to claim 1, characterized in that: The preparation method of the moisture-absorbing and sweat-conducting polyester fiber comprises the following steps: blending hydroxyl-terminated polyester and cooling particles, melt-spinning, and post-treating to obtain the moisture-absorbing and sweat-conducting polyester fiber.

8. The moisture-absorbing and sweat-conducting polyester fabric according to claim 7, characterized in that: The specific conditions of the blended melt spinning are: screw zone 1 temperature 275-280°C, zone 2 280-285°C, zone 3 285-290°C, zone 4 290-295°C, zone 5 285-290°C, zone 6 280-285°C, and box 280-285°C.

9. The moisture-absorbing and sweat-conducting polyester fabric according to claim 7, characterized in that: The specific steps of the post-treatment are: stretching temperature 60-65°C, total stretching ratio 3.2-3.6 times, and heat setting temperature 175-180°C.

10. The method for preparing the moisture-absorbing and sweat-conducting polyester fabric according to any one of claims 1 to 9, characterized in that: The moisture-absorbing and sweat-conducting polyester fibers are woven to obtain the moisture-absorbing and sweat-conducting polyester fabric.

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