Preparation method of sweat-releasing and moisture-absorbing textile fabric

Abstract

The invention belongs to the technical field of textile fabrics, and discloses a preparation method of a sweat-releasing and moisture-absorbing textile fabric. The method comprises the following steps: preparing covering yarns by taking polyethylene fibers as cores and polylactic acid rough yarns as skins, then preparing covering yarn woven fabrics, and padding the covering yarns by using finishing liquid to obtain inner layers; doubling polyethylene fibers and bamboo yarns to prepare a doubled winder fabric, and padding the doubled winder fabric with the finishing liquid to obtain a middle layer; finally, the inner layer, the hot melt adhesive net film, the polyester microporous film, the hot melt adhesive net film and the middle layer are sequentially aligned and stacked, after hot pressing, the hot melt adhesive net film and the outer layer are sequentially stacked on the side of the middle layer and are subjected to hot pressing, and after balancing, the sweat-releasing and moisture-absorbing textile fabric is obtained. Wherein the outer layer is a pure cotton fabric, and a synergistic coating is arranged on the surface, which is not attached to the hot melt adhesive net film, of the outer layer. By introducing the composite nanoparticles and microcapsule particles in the synergistic coating, the tear resistance, air permeability, radiation refrigeration and self-cleaning capability of the sweat-releasing and moisture-absorbing textile fabric are effectively improved. Therefore, the method has a wider application prospect.

Description

Technical Field

[0001] This invention belongs to the field of textile fabric technology, specifically relating to a method for preparing a sweat-wicking and moisture-absorbing textile fabric. Background Technology

[0002] In the hot summer, the human body often sweats a lot due to the combined effects of high temperatures and daily activities. While traditional natural fiber fabrics like cotton and linen have some moisture-wicking capacity, their strong water retention and slow sweat evaporation mean that absorbed sweat cannot be quickly released. Instead, a persistent damp layer forms between the fabric and the skin, clinging tightly and causing a sticky, stuffy feeling that severely restricts movement. This damp environment can also breed bacteria, leading to local skin inflammation and unpleasant odors. To address the core problem of traditional fabrics' inability to wick away sweat, engineers have developed lightweight synthetic fibers and blended materials, with polyester fibers (polyester) becoming the mainstream. These fabrics utilize hydrophobic fiber structures and capillary effects to quickly transfer sweat from the skin to the fabric surface, where it evaporates over a large area, effectively alleviating the problem of dampness and stickiness.

[0003] However, lightweight, quick-drying synthetic fiber fabrics have poor tear resistance and abrasion resistance. To further alleviate the problem of sweating in summer, technicians have proposed combining radiative cooling technology with textile fabrics. However, to ensure the radiative cooling effect, the coating often needs to have a certain continuity and thickness, which can clog the original fiber gaps and pores of the fabric, making it difficult for air and water vapor to circulate and significantly reducing breathability. At the same time, most radiative cooling coatings have high surface energy and insufficient hydrophobicity, making them prone to absorbing dust, oil, sweat residue, and other stains during daily use, affecting reflection and radiation performance, clogging pores, and creating a vicious cycle of decreased breathability, stain adhesion, and functional degradation. Therefore, there is an urgent need to develop a sweat-wicking and moisture-absorbing textile fabric that simultaneously possesses excellent tear resistance, high breathability, efficient radiative cooling capacity, and strong self-cleaning ability. Summary of the Invention

[0004] To address the shortcomings mentioned in the background section, the present invention aims to provide a method for preparing a moisture-wicking textile fabric, thereby solving the following technical problems: Existing moisture-wicking textile fabrics still cannot simultaneously possess excellent tear resistance, high breathability, high radiative cooling capacity, and strong self-cleaning ability.

[0005] The objective of this invention can be achieved through the following technical solutions: A method for preparing a sweat-wicking and moisture-absorbing textile fabric includes the following steps: S1: Core-spun yarn is made by using polyethylene fiber as the core and polylactic acid roving as the sheath to produce core-spun yarn woven fabric. After being treated with finishing solution and dried, the inner layer is obtained. S2: Polyethylene fiber and bamboo yarn are combined to form a cross-woven fabric, which is then treated with finishing liquid and dried to obtain the middle layer. S3: Align and stack the inner layer, hot melt adhesive web, polyester microporous membrane, hot melt adhesive web, and middle layer in that order. After hot pressing, stack the hot melt adhesive web on the middle layer side, then stack the outer layer and hot press. After balancing, you will get a sweat-wicking and moisture-absorbing textile fabric. The outer layer is a pure cotton fabric with an enhancement coating on the side not bonded to the hot melt adhesive film; The enhancement coating is made of a coating slurry; The coating slurry is prepared from titanium aluminum carbide dispersion, fluorinated polyurethane resin, composite nanoparticles, microcapsule particles, hydroxyethyl cellulose, and polyoxyethylene octylphenol ether. The composite nanoparticles are composite particles with sodium fluoroyttrium doped with ytterbium ions and erbium ions as the core and sodium fluoroyttrium as the shell. The microcapsule particles are microcapsules with octadecane as the core material and cross-linked polymethyl methacrylate (PMMA) formed by free radical polymerization of methyl methacrylate and divinylbenzene as the wall material.

[0006] Preferably, the preparation method of the titanium aluminum carbide dispersion is as follows: Hydrofluoric acid and hydrochloric acid were mixed, cooled, and then lithium chloride and titanium aluminum carbide were added. The mixture was stirred at 40-50℃ for 24-26 hours. After centrifugation and washing of the precipitate, the precipitate was dispersed in deionized water and sonicated at 0-10℃ under an argon atmosphere for 1-1.5 hours. After centrifugation at 3000-3500 r / min for 30-40 minutes, the supernatant was collected to obtain a titanium aluminum carbide dispersion.

[0007] Preferably, the ratio of hydrofluoric acid, hydrochloric acid, lithium chloride, titanium aluminum carbide, and deionized water is 40mL:10mL:2g:2g:180-200mL; The hydrofluoric acid has a mass fraction of 49%. The hydrochloric acid has a mass fraction of 37%.

[0008] Preferably, the method for preparing the composite nanoparticles is as follows: A1: Dissolve yttrium chloride hexahydrate, ytterbium chloride hexahydrate, and erbium chloride hexahydrate in deionized water to obtain a mixed solution; A2: Dissolve sodium hydroxide and ammonium fluoride in methanol to obtain solution 1; A3: Dissolve yttrium chloride hexahydrate and sodium fluoride in methanol to obtain solution 2; A4: Oleic acid and 1-octadecene were mixed, vacuumed, and heated to 120°C for 30-40 min. After cooling to 45-50°C, the mixed solution was added under a nitrogen atmosphere and heated to 110°C for 30-40 min. Then, the temperature was increased to 310°C, and solution 1 was injected and kept at that temperature for 1-1.5 h. After cooling to 280°C, solution 2 was injected and kept at that temperature for 1-1.5 h. After cooling, anhydrous ethanol was added, and the mixture was centrifuged, the precipitate was washed, and vacuum dried to obtain composite nanoparticles.

[0009] Preferably, the mass ratio of yttrium chloride hexahydrate, ytterbium chloride hexahydrate, erbium chloride hexahydrate, and deionized water in A1 is 2.96:0.86:0.075:10-15; The ratio of sodium hydroxide, ammonium fluoride, and methanol used in A2 is 0.16g:0.19g:20-25mL; The ratio of yttrium chloride hexahydrate, sodium fluoride, and methanol described in A3 is 0.5g:0.2g:10-15mL; The volume ratio of oleic acid, 1-octadecene, mixed solution, solution 1, solution 2, and anhydrous ethanol in A4 is 8:15:10-15:20-25:10-15:50-70.

[0010] Preferably, the microcapsule particles are prepared as follows: B1: Dissolve sodium dodecyl sulfate in deionized water to obtain a sodium dodecyl sulfate solution; B2: Mix octadecane, methyl methacrylate, divinylbenzene, and azobisisobutyronitrile evenly, then pour into sodium dodecyl sulfate solution and emulsify at 8000-9000 r / min for 5-7 min at 0-10℃. Then stir at 75℃ under nitrogen atmosphere for 6-7 h, centrifuge, wash with deionized water 3-5 times, wash with anhydrous ethanol 1-2 times, and vacuum dry at 60℃ for 8-10 h to obtain microcapsule particles.

[0011] Preferably, the mass ratio of sodium dodecyl sulfate to deionized water in B1 is 0.5:190-200; The mass ratio of octadecane, methyl methacrylate, divinylbenzene, azobisisobutyronitrile, and sodium dodecyl sulfate solution in B2 is 10:5:0.5:0.1:190-200.

[0012] Preferably, the preparation method of the coating slurry is as follows: The titanium aluminum carbide dispersion was mixed with fluorinated polyurethane resin, then composite nanoparticles and microcapsule particles were added and ultrasonicated for 30-50 minutes. Then hydroxyethyl cellulose and polyoxyethylene octylphenol ether were added and stirred for 1-2 hours. After standing for 15-30 minutes, the coating slurry was obtained. The mass ratio of the titanium aluminum carbide dispersion, fluorinated polyurethane resin, composite nanoparticles, microcapsule particles, hydroxyethyl cellulose, and polyoxyethylene octylphenol ether is 100-120:66.7:0.5:5:2:1. The solid content of the fluorinated polyurethane resin is 30%.

[0013] Preferably, the finishing solution is prepared as follows: Add sodium fatty alcohol polyoxyethylene ether carboxylate and ethylene glycol diglycidyl ether to deionized water and stir well to obtain the finishing solution; The mass ratio of the deionized water, sodium fatty alcohol polyoxyethylene ether carboxylate, and ethylene glycol diglycidyl ether is 900-1000:20:10.

[0014] Preferably, the immersion and rolling process is a two-dip and two-roll process with a roll residue of 78%-82%, a temperature of 40°C, and an immersion time of 10-12 minutes each time. The equilibration process involves equilibrating at 20-25℃ and 65%RH for 20-30 hours. The moisture-permeable surface of the polyester microporous membrane faces the middle layer.

[0015] The beneficial effects of this invention are: This invention provides a method for preparing a moisture-wicking textile fabric. The method effectively improves the tear resistance, breathability, radiative cooling capacity, and self-cleaning ability of the moisture-wicking textile fabric.

[0016] (1) In the titanium aluminum carbide dispersion of the present invention, titanium aluminum carbide itself has a certain rigidity, which can support the coating structure, reduce the tensile fracture of the coating during the tearing process, and improve the tear resistance of the outer coating. Its micro- and nano-particles can improve the interfacial bonding force between fluorinated polyurethane resin and pure cotton substrate, reduce the tearing failure caused by the peeling of the coating and substrate, and further improve the tear resistance of the fabric. Titanium aluminum carbide has natural reflectivity to the solar spectrum, which can supplement the reflectivity of the composite nanoparticles, improve the overall solar spectrum reflectivity, and reduce the absorption of solar radiation. Its inorganic components have a certain infrared emissivity in the atmospheric window, which can assist the infrared radiation of the composite nanoparticles, improve the overall atmospheric window emissivity, enhance the radiative transfer of heat to the outside, and improve the radiative cooling effect. Titanium aluminum carbide itself is a weakly hydrophobic material. After its addition, it can improve the overall hydrophobicity of the coating and assist fluorinated polyurethane in improving the contact angle of the outer coating surface. Its micro- and nano-sized particles can build a micro-rough structure on the coating surface, enhance the hydrophobic effect, reduce the roll-off angle, make water droplets roll off more easily, remove surface stains, and improve the self-cleaning ability.

[0017] (2) The composite nanoparticles of this invention can serve as stress dispersion points, enhancing the bonding force within the coating and simultaneously improving the adhesion between the coating and the pure cotton substrate, thereby enhancing the fabric's tear resistance. Sodium yttrium fluorocarbonate is an excellent rare-earth fluoride optical material, with a reflectivity to the solar spectrum far exceeding that of pure fluorinated polyurethane coatings. The ion doping of ytterbium and erbium ions further enhances the scattering and reflection of visible light and near-infrared light, increasing the overall solar reflectivity of the fabric and significantly reducing solar radiation absorption. The 4f electron transitions of ytterbium and erbium ions possess specific infrared radiation characteristics, enhancing the fabric's infrared emission capability at atmospheric windows and accelerating the radiative dissipation of heat from the fabric's interior to the outside. The composite nanoparticles form a slightly rough microstructure. Combined with the hydrophobic properties of fluorinated polyurethane itself, the microstructure further increases the surface contact angle and reduces the roll-off angle, making it easier for water droplets to roll off the coating surface and reducing the adhesion of dust and stains.

[0018] (3) The micron-sized particles of the microcapsules of this invention will form interparticle gaps inside the coating, becoming additional channels for water vapor to pass through; at the same time, the core material octadecane and the wall material crosslinked polymethyl methacrylate will not absorb water vapor, avoiding blockage of pores due to water absorption and expansion, ensuring the stability of the moisture permeability channels, and further improving the moisture permeability of the fabric. The hydrophobic properties of the microcapsules will also prevent liquid water (such as rainwater) from seeping into the outer layer, but will not affect the water vapor discharged from the inner layer to pass through, forming a one-way moisture permeability effect of inner layer moisture release and outer layer water repellency. After the microcapsules are dispersed in the coating, they will break the density of the pure resin coating, and the gaps between the particles will connect with the tiny pores of the resin itself, forming richer air permeability channels; at the same time, the hydrophobic properties of the core material octadecane will prevent the pores from absorbing water and blocking in humid environments, further ensuring the stability of air permeability and improving air permeability. The core material of the microcapsules, octacosane, has high reflectivity for visible and near-infrared light, while the wall material, cross-linked polymethyl methacrylate (CMA), also has high reflectivity for visible light. The combined microcapsules, dispersed within the coating, act as micron-sized reflective particles, significantly enhancing solar spectral reflectivity and reducing solar energy absorption by the fabric. When the fabric temperature rises to its phase transition point due to sunlight, octacosane absorbs heat and melts from a solid to a liquid state, achieving passive cooling. When the temperature drops, it releases heat and solidifies, maintaining a stable fabric temperature. This process, synergistic with radiative cooling, significantly enhances the fabric's cooling effect. Both the CMA and octacosane core materials are hydrophobic. Dispersed within the fluorinated polyurethane coating, they further enhance the overall hydrophobicity of the coating, making it more difficult for water droplets to spread on the surface. The micron-sized particles of the microcapsules create a rough structure with micro-protrusions and depressions on the coating surface, amplifying hydrophobicity, reducing the water roll-off angle, and making it easier for water droplets to roll off. Simultaneously, they remove surface dust, oil, and other stains, improving the fabric's self-cleaning efficiency.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. The embodiments described below 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Unless otherwise specified, the following information pertains to some of the raw materials used in the following embodiments and comparative examples of this invention: Polyethylene fiber was purchased from Zhejiang Changxing Tiansheng Chemical Fiber Co., Ltd., specification: 75D / 72f, round cross-section; polylactic acid roving was purchased from Weifang Qimian Spinning Co., Ltd., specification: 513tex; bamboo yarn was purchased from Langfang Runfengda Textile Co., Ltd., specification: 100% recycled bamboo fiber, 60 count; the hot melt adhesive web was a low melting point polyester hot melt adhesive web, with a basis weight of 20g / m². 2 Polyester ultrathin microporous membrane, 20μm thick, with a moisture permeability of 15000g / m³. 2 / 24h; the weight of pure cotton fabric is 105-115g / m². 2 Specifications: 40S×40S.

[0022] Example 1: A method for preparing a sweat-wicking and moisture-absorbing textile fabric is as follows: S1: In a fume hood, 40 mL of 49% hydrofluoric acid and 10 mL of 37% hydrochloric acid were mixed. After cooling, 2 g of lithium chloride and 2 g of titanium aluminum carbide were added and stirred at 40 °C for 24 h. Then, the mixture was centrifuged and the precipitate was washed with deionized water until the pH of the supernatant was 6. The precipitate was then dispersed in 180 mL of deionized water and ultrasonically dispersed for 1 h under argon protection at 0 °C. After centrifugation at 3000 r / min for 30 min, the supernatant was collected to obtain titanium aluminum carbide dispersion. S2: Dissolve 2.96g of yttrium chloride hexahydrate, 0.86g of ytterbium chloride hexahydrate, and 0.075g of erbium chloride hexahydrate in 10mL of deionized water to obtain a mixed solution; S3: Dissolve 0.16g sodium hydroxide and 0.19g ammonium fluoride in 20mL methanol to obtain solution 1; S4: Dissolve 0.5g of yttrium chloride hexahydrate and 0.2g of sodium fluoride in 10mL of methanol to obtain solution 2; S5: Mix 8 mL of oleic acid and 15 mL of 1-octadecene, then vacuum and heat to 120 °C for 30 min. After cooling to 45 °C, add 10 mL of the mixed solution under a nitrogen atmosphere and heat to 110 °C while stirring. After holding for 30 min, heat to 310 °C. Then, inject 20 mL of solution 1 at 1 mL / min and hold for 1 h. After cooling to 280 °C, inject 10 mL of solution 2 at 1 mL / min and hold for 1 h. After cooling, add 50 mL of anhydrous ethanol and centrifuge. Wash and centrifuge three times with a 1:1 volume ratio of cyclohexane and ethanol mixture. Vacuum dry at 60 °C for 12 h to obtain composite nanoparticles. S6: Dissolve 0.5g of sodium dodecyl sulfate in 190-200mL of deionized water to obtain a sodium dodecyl sulfate solution; S7: Mix 10g octadecane, 5g methyl methacrylate, 0.5g divinylbenzene, and 0.1g azobisisobutyronitrile evenly, then pour into 190g sodium dodecyl sulfate solution and emulsify at 8000r / min for 5min at 0℃. Then stir at 75℃ under nitrogen atmosphere for 6h, centrifuge, wash 3 times with deionized water, wash once with anhydrous ethanol, and vacuum dry at 60℃ for 8h to obtain microcapsule particles. S8: Mix 100g of titanium aluminum carbide dispersion with 66.7g of fluorinated polyurethane resin with a solid content of 30% and stir for 2h. Then add 0.5g of composite nanoparticles and 5g of microcapsule particles and sonicate for 30min. Then add 2g of hydroxyethyl cellulose and 1g of polyoxyethylene octylphenol ether and stir for 1h. After standing for 15min, the coating slurry is obtained. S9: Add 20g of sodium fatty alcohol polyoxyethylene ether carboxylate and 10g of ethylene glycol diglycidyl ether to 900mL of deionized water and stir for 10min to obtain the finishing solution; S10: A core-spun yarn with a twist of 120 twists / m is prepared using polyethylene fiber as the core layer and polylactic acid roving as the sheath layer. The core-spun yarn is then processed to a weight of 115 g / m. 2 The core-spun yarn woven fabric is then subjected to a finishing solution with a 78% padding rate, a temperature of 40°C, and a immersion time of 10 min each time. It is then dried at 100°C for 2 min and baked at 150°C for 3 min. After cooling, the inner layer is obtained. S11: Polyethylene fiber and bamboo yarn are combined with a twist of 100 twists / m, and then the combined yarn is made into a weight of 95g / m². 2 The interwoven yarn fabric is then subjected to a finishing solution with a two-dip, two-nip process at a residual rate of 78%, a temperature of 40°C, and a immersion time of 10 min each time. It is then dried at 100°C for 2 min and baked at 150°C for 3 min. After cooling, the intermediate layer is obtained. S12: Coat one side of a pure cotton fabric with a 100μm thick coating paste, then bake it at 80℃ for 5 minutes, then at 150℃ for 2 minutes, and obtain the outer layer after cooling. S13: Align and stack the inner layer, hot melt adhesive web, polyester ultra-thin microporous membrane (moisture-permeable side facing the middle layer), hot melt adhesive web, and middle layer in that order. Then, hot press at 105℃ and 0.3MPa for 30s. Next, stack a low-melting-point polyester hot melt adhesive web on one side of the middle layer, and then stack the outer layer (uncoated side is bonded to the adhesive web). Then, hot press at 105℃ and 0.3MPa for 30s. After cooling, equilibrate at 20℃ and 65%RH for 20h to obtain the sweat-wicking and moisture-absorbing textile fabric.

[0023] Example 2: A method for preparing a sweat-wicking and moisture-absorbing textile fabric is as follows: S1: In a fume hood, 40 mL of 49% hydrofluoric acid and 10 mL of 37% hydrochloric acid were mixed. After cooling, 2 g of lithium chloride and 2 g of titanium aluminum carbide were added and stirred at 45 °C for 25 h. The mixture was then centrifuged and the precipitate was washed with deionized water until the pH of the supernatant was 6.5. The precipitate was then dispersed in 190 mL of deionized water and ultrasonically dispersed at 5 °C under argon protection for 1.3 h. After centrifugation at 3300 r / min for 35 min, the supernatant was collected to obtain a titanium aluminum carbide dispersion. S2: Dissolve 2.96g of yttrium chloride hexahydrate, 0.86g of ytterbium chloride hexahydrate, and 0.075g of erbium chloride hexahydrate in 13mL of deionized water to obtain a mixed solution; S3: Dissolve 0.16g sodium hydroxide and 0.19g ammonium fluoride in 23mL methanol to obtain solution 1; S4: Dissolve 0.5g of yttrium chloride hexahydrate and 0.2g of sodium fluoride in 13mL of methanol to obtain solution 2; S5: Mix 8 mL of oleic acid and 15 mL of 1-octadecene, then vacuum and heat to 120 °C for 35 min. After cooling to 47 °C, add 13 mL of the mixed solution under a nitrogen atmosphere and heat to 110 °C while stirring. After holding for 35 min, heat to 310 °C. Then, inject 23 mL of solution 1 at 1 mL / min and hold for 1.2 h. After cooling to 280 °C, inject 13 mL of solution 2 at 1 mL / min and hold for 1.2 h. After cooling, add 60 mL of anhydrous ethanol and centrifuge. Wash with a 1:1 mixture of cyclohexane and ethanol and centrifuge 4 times. Dry under vacuum at 60 °C for 14 h to obtain composite nanoparticles. S6: Dissolve 0.5g of sodium dodecyl sulfate in 195mL of deionized water to obtain a sodium dodecyl sulfate solution; S7: Mix 10g octadecane, 5g methyl methacrylate, 0.5g divinylbenzene, and 0.1g azobisisobutyronitrile evenly, then pour into 195g sodium dodecyl sulfate solution and emulsify at 8500r / min for 6min at 5℃. Then stir at 75℃ under nitrogen atmosphere for 6.5h, centrifuge, wash 4 times with deionized water, wash 2 times with anhydrous ethanol, and vacuum dry at 60℃ for 9h to obtain microcapsule particles; S8: Mix 110g of titanium aluminum carbide dispersion with 66.7g of fluorinated polyurethane resin with a solid content of 30% and stir for 2h. Then add 0.5g of composite nanoparticles and 5g of microcapsule particles and sonicate for 40min. Then add 2g of hydroxyethyl cellulose and 1g of polyoxyethylene octylphenol ether and stir for 1-2h. After standing for 23min, the coating slurry is obtained. S9: Add 20g of sodium fatty alcohol polyoxyethylene ether carboxylate and 10g of ethylene glycol diglycidyl ether to 950mL of deionized water and stir for 15min to obtain the finishing solution; S10: A core-spun yarn with a twist of 120 twists / m is prepared using polyethylene fiber as the core layer and polylactic acid roving as the sheath layer. The core-spun yarn is then processed to a weight of 120 g / m. 2 The core-spun yarn woven fabric is then subjected to a finishing solution with a two-dip, two-nip process at a residual rate of 80%, a temperature of 40°C, and a immersion time of 11 minutes each time. The fabric is then dried at 100°C for 2.5 minutes and baked at 150°C for 3.5 minutes. After cooling, the inner layer is obtained. S11: Polyethylene fiber and bamboo yarn are combined with a twist of 100 twists / m, and then the combined yarns are made into yarns with a weight of 100g / m. 2 The interlaced yarn woven fabric is then subjected to a finishing solution for two dips and two nips at a residual rate of 80%, a temperature of 40°C, and a immersion time of 11 min each time. It is then dried at 100°C for 2.5 min and baked at 150°C for 3.5 min. After cooling, the intermediate layer is obtained. S12: Coat one side of a pure cotton fabric with a 150μm thick coating paste, then bake it at 80℃ for 6 minutes, then at 150℃ for 3 minutes, and obtain the outer layer after cooling. S13: Align and stack the inner layer, hot melt adhesive web, polyester ultra-thin microporous membrane (moisture-permeable side facing the middle layer), hot melt adhesive web, and middle layer in that order. Then, hot press at 110℃ and 0.3MPa for 33s. Next, stack a low-melting-point polyester hot melt adhesive web on one side of the middle layer, and then stack the outer layer (uncoated side is bonded to the adhesive web). Then, hot press at 110℃ and 0.3MPa for 33s. After cooling, equilibrate at 23℃ and 65%RH for 25h to obtain the sweat-wicking and moisture-absorbing textile fabric.

[0024] Example 3: A method for preparing a sweat-wicking and moisture-absorbing textile fabric is as follows: S1: In a fume hood, 40 mL of 49% hydrofluoric acid and 10 mL of 37% hydrochloric acid were mixed. After cooling, 2 g of lithium chloride and 2 g of titanium aluminum carbide were added and stirred at 50 °C for 26 h. The mixture was then centrifuged and the precipitate was washed with deionized water until the pH of the supernatant was 7. The precipitate was then dispersed in 200 mL of deionized water and ultrasonically dispersed at 10 °C under argon protection for 1.5 h. After centrifugation at 3500 r / min for 40 min, the supernatant was collected to obtain a titanium aluminum carbide dispersion. S2: Dissolve 2.96g of yttrium chloride hexahydrate, 0.86g of ytterbium chloride hexahydrate, and 0.075g of erbium chloride hexahydrate in 15mL of deionized water to obtain a mixed solution; S3: Dissolve 0.16g sodium hydroxide and 0.19g ammonium fluoride in 25mL methanol to obtain solution 1; S4: Dissolve 0.5g of yttrium chloride hexahydrate and 0.2g of sodium fluoride in 15mL of methanol to obtain solution 2; S5: Mix 8 mL of oleic acid and 15 mL of 1-octadecene, then vacuum and heat to 120 °C for 40 min. After cooling to 50 °C, add 15 mL of the mixed solution under a nitrogen atmosphere and heat to 110 °C while stirring. After holding for 40 min, heat to 310 °C. Then, inject 25 mL of solution 1 at 1 mL / min and hold for 1.5 h. After cooling to 280 °C, inject 15 mL of solution 2 at 1 mL / min and hold for 1.5 h. After cooling, add 70 mL of anhydrous ethanol and centrifuge. Wash with a 1:1 mixture of cyclohexane and ethanol and centrifuge 5 times. Dry under vacuum at 60 °C for 15 h to obtain composite nanoparticles. S6: Dissolve 0.5g of sodium dodecyl sulfate in 200mL of deionized water to obtain a sodium dodecyl sulfate solution; S7: Mix 10g octadecane, 5g methyl methacrylate, 0.5g divinylbenzene, and 0.1g azobisisobutyronitrile evenly, then pour into 200g sodium dodecyl sulfate solution and emulsify at 9000r / min for 7min at 10℃. Then stir at 75℃ under nitrogen atmosphere for 7h, centrifuge, wash 5 times with deionized water, wash 2 times with anhydrous ethanol, and vacuum dry at 60℃ for 8-10h to obtain microcapsule particles. S8: Mix 120g of titanium aluminum carbide dispersion with 66.7g of fluorinated polyurethane resin with a solid content of 30% and stir for 2h. Then add 0.5g of composite nanoparticles and 5g of microcapsule particles and sonicate for 50min. Then add 2g of hydroxyethyl cellulose and 1g of polyoxyethylene octylphenol ether and stir for 1-2h. After standing for 30min, the coating slurry is obtained. S9: Add 20g of sodium fatty alcohol polyoxyethylene ether carboxylate and 10g of ethylene glycol diglycidyl ether to 1000mL of deionized water and stir for 20min to obtain the finishing solution; S10: A core-spun yarn with a twist of 120 twists / m is prepared using polyethylene fiber as the core layer and polylactic acid roving as the sheath layer. The core-spun yarn is then processed to a weight of 125 g / m. 2 The core-spun yarn woven fabric is then subjected to a finishing solution with a two-dip, two-nip process at a nip rate of 82%, a temperature of 40°C, and a immersion time of 12 minutes each time. The fabric is then dried at 100°C for 3 minutes and baked at 150°C for 4 minutes. After cooling, the inner layer is obtained. S11: Polyethylene fiber and bamboo yarn are combined with a twist of 100 twists / m, and then the combined yarn is made into a weight of 105g / m. 2 The interlaced yarn woven fabric is then subjected to a finishing solution for two dips and two nips at a pick-up rate of 82%, a temperature of 40°C, and a immersion time of 12 minutes each time. It is then dried at 100°C for 3 minutes and baked at 150°C for 4 minutes. After cooling, the intermediate layer is obtained. S12: Coat one side of a pure cotton fabric with a 200μm thick coating paste, then bake it at 80℃ for 7 minutes, then at 150℃ for 4 minutes, and obtain the outer layer after cooling. S13: Align and stack the inner layer, hot melt adhesive web, polyester ultra-thin microporous membrane (moisture-permeable side facing the middle layer), hot melt adhesive web, and middle layer in that order. Then, hot press at 115℃ and 0.3MPa for 35s. Next, stack a low-melting-point polyester hot melt adhesive web on one side of the middle layer, and then stack the outer layer (uncoated side is bonded to the adhesive web). Then, hot press at 115℃ and 0.3MPa for 35s. After cooling, equilibrate at 25℃ and 65%RH for 30h to obtain the sweat-wicking and moisture-absorbing textile fabric.

[0025] Comparative Example 1: Compared with Example 1, this comparative example only replaces the "titanium aluminum carbide dispersion" added in the preparation process of S8 with "deionized water". All other steps and parameters are the same, and will not be repeated in this comparative example. Finally, a sweat-wicking and moisture-absorbing textile fabric is obtained.

[0026] Comparative Example 2: Compared with Example 1, this comparative example only did not add "composite nanoparticles" in the preparation process of S8. All other steps and parameters were the same, and will not be repeated here. The final product is a sweat-wicking and moisture-absorbing textile fabric.

[0027] Comparative Example 3: Compared with Example 1, this comparative example only did not add "microcapsule particles" in the preparation process of S8. All other steps and parameters were the same, and will not be repeated here. The final product is a sweat-wicking and moisture-absorbing textile fabric.

[0028] Performance testing: Determination of moisture permeability: Referring to GB / T 12704.1—2009 "Textiles - Test Methods for Moisture Permeability of Fabrics - Part 1: Moisture Absorption Method", the moisture permeability (g·m³) of the wicking and moisture-absorbing textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention was determined using a moisture permeability analyzer (FX3180-CM15, Textest, Switzerland). -2 ·d -1 The test results are shown in Table 1.

[0029] Test of tear resistance: Referring to GB / T 3917.3-2025 "Textiles - Tear Properties - Part 3: Determination of Tear Strength of Trapezoidal Specimens", the maximum force (N) required to tear the moisture-wicking textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention was determined, and the test results are shown in Table 1.

[0030] Air permeability testing: Referring to GB / T 5453—1997 "Textiles - Determination of Air Permeability of Fabrics", an automatic air permeability tester (YG461E-III, China) was used to determine the air permeability of the moisture-wicking textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention in a test area of ​​20 cm². 2 The air permeability (mm / s) was tested at a pressure of 100 Pa, and the test results are shown in Table 1.

[0031] Table 1: Basic performance test results of Examples 1-3 and Comparative Examples 1-3

[0032] Measurement of radiative cooling capacity: Solar spectral reflectance: Diffuse reflectance spectral analysis was performed using a high-precision UV-Vis-NIR spectrophotometer (Shimadzu UV-3600i Plus, Japan) with an integrating sphere attachment, and the average solar reflectance (%) of the moisture-wicking textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention in the wavelength range of 250-2500 nm was calculated. The results are shown in Table 1.

[0033] Atmospheric window emissivity: The infrared spectral emissivity in the 8-13 μm atmospheric window band was measured using a Fourier transform infrared spectrometer with a gold-plated integrating sphere (ThermoScientific, model Nicolet iS50, USA), and the atmospheric window emissivity (%) of the moisture-wicking textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention at the 8-13 μm atmospheric window was calculated. The measurement results are shown in Table 1.

[0034] Determination of self-cleaning ability: Referring to GB / T 42694-2023 "Detection and evaluation of the surface anti-wetting properties of textiles - contact angle and roll-off angle method", the water contact angle and roll-off angle (°) of the outer surface (coated surface) of the moisture-wicking textile fabrics prepared in Examples 1-3 and Comparative Examples 1-3 of this invention were measured. The results are shown in Table 1.

[0035] Table 2: Performance test results of Examples 1-3 and Comparative Examples 1-3

[0036] Data Analysis: As can be seen from Tables 1 and 2, the moisture-wicking textile fabric prepared in the embodiments of the present invention has excellent moisture permeability, tear resistance, air permeability, radiative cooling capacity, and self-cleaning ability.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for preparing a sweat-wicking and moisture-absorbing textile fabric, characterized in that, Includes the following steps: S1: Core-spun yarn is made by using polyethylene fiber as the core and polylactic acid roving as the sheath to produce core-spun yarn woven fabric. After being treated with finishing solution and dried, the inner layer is obtained. S2: Polyethylene fiber and bamboo yarn are combined to form a cross-woven fabric, which is then treated with finishing liquid and dried to obtain the middle layer. S3: Align and stack the inner layer, hot melt adhesive web, polyester microporous membrane, hot melt adhesive web, and middle layer in that order. After hot pressing, stack the hot melt adhesive web on the middle layer side, then stack the outer layer and hot press. After balancing, you will get a sweat-wicking and moisture-absorbing textile fabric. The outer layer is a pure cotton fabric with an enhancement coating on the side not bonded to the hot melt adhesive film; The enhancement coating is made of a coating slurry; The coating slurry is prepared from titanium aluminum carbide dispersion, fluorinated polyurethane resin, composite nanoparticles, microcapsule particles, hydroxyethyl cellulose, and polyoxyethylene octylphenol ether. The composite nanoparticles are composite particles with sodium fluoroyttrium doped with ytterbium ions and erbium ions as the core and sodium fluoroyttrium as the shell. The microcapsule particles are microcapsules with octadecane as the core material and cross-linked polymethyl methacrylate (PMMA) formed by free radical polymerization of methyl methacrylate and divinylbenzene as the wall material.

2. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The preparation method of the titanium aluminum carbide dispersion is as follows: Hydrofluoric acid and hydrochloric acid were mixed, cooled, and then lithium chloride and titanium aluminum carbide were added. The mixture was stirred at 40-50℃ for 24-26 hours. After centrifugation and washing of the precipitate, the precipitate was dispersed in deionized water and sonicated at 0-10℃ under an argon atmosphere for 1-1.5 hours. After centrifugation at 3000-3500 r / min for 30-40 minutes, the supernatant was collected to obtain a titanium aluminum carbide dispersion.

3. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 2, characterized in that, The ratio of hydrofluoric acid, hydrochloric acid, lithium chloride, titanium aluminum carbide, and deionized water is 40mL:10mL:2g:2g:180-200mL. The hydrofluoric acid has a mass fraction of 49%. The hydrochloric acid has a mass fraction of 37%.

4. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The preparation method of the composite nanoparticles is as follows: A1: Dissolve yttrium chloride hexahydrate, ytterbium chloride hexahydrate, and erbium chloride hexahydrate in deionized water to obtain a mixed solution; A2: Dissolve sodium hydroxide and ammonium fluoride in methanol to obtain solution 1; A3: Dissolve yttrium chloride hexahydrate and sodium fluoride in methanol to obtain solution 2; A4: Oleic acid and 1-octadecene were mixed, vacuumed, and heated to 120°C for 30-40 min. After cooling to 45-50°C, the mixed solution was added under a nitrogen atmosphere and the temperature was raised to 110°C and held for 30-40 min. Then the temperature was raised to 310°C, and solution 1 was injected and held for 1-1.5 h. After cooling to 280°C, solution 2 was injected and held for 1-1.5 h. After cooling, anhydrous ethanol was added, and the mixture was centrifuged, washed, and dried to obtain composite nanoparticles.

5. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 4, characterized in that, The mass ratio of yttrium chloride hexahydrate, ytterbium chloride hexahydrate, erbium chloride hexahydrate, and deionized water in A1 is 2.96:0.86:0.075:10-15; The ratio of sodium hydroxide, ammonium fluoride, and methanol used in A2 is 0.16g:0.19g:20-25mL; The ratio of yttrium chloride hexahydrate, sodium fluoride, and methanol described in A3 is 0.5g:0.2g:10-15mL; The volume ratio of oleic acid, 1-octadecene, mixed solution, solution 1, solution 2, and anhydrous ethanol in A4 is 8:15:10-15:20-25:10-15:50-70.

6. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The microcapsule particles are prepared as follows: B1: Dissolve sodium dodecyl sulfate in deionized water to obtain a sodium dodecyl sulfate solution; B2: Mix octadecane, methyl methacrylate, divinylbenzene, and azobisisobutyronitrile evenly, then pour into sodium dodecyl sulfate solution and emulsify at 8000-9000 r / min for 5-7 min at 0-10℃. Then stir at 75℃ under nitrogen atmosphere for 6-7 h, centrifuge, wash with deionized water 3-5 times, wash with anhydrous ethanol 1-2 times, and vacuum dry at 60℃ for 8-10 h to obtain microcapsule particles.

7. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 6, characterized in that, The mass ratio of sodium dodecyl sulfate to deionized water in B1 is 0.5:190-200; The mass ratio of octadecane, methyl methacrylate, divinylbenzene, azobisisobutyronitrile, and sodium dodecyl sulfate solution in B2 is 10:5:0.5:0.1:190-200.

8. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The preparation method of the coating slurry is as follows: The titanium aluminum carbide dispersion was mixed with fluorinated polyurethane resin, then composite nanoparticles and microcapsule particles were added and ultrasonicated for 30-50 minutes. Then hydroxyethyl cellulose and polyoxyethylene octylphenol ether were added and stirred for 1-2 hours. After standing for 15-30 minutes, the coating slurry was obtained. The mass ratio of the titanium aluminum carbide dispersion, fluorinated polyurethane resin, composite nanoparticles, microcapsule particles, hydroxyethyl cellulose, and polyoxyethylene octylphenol ether is 100-120:66.7:0.5:5:2:

1. The solid content of the fluorinated polyurethane resin is 30%.

9. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The finishing solution is prepared as follows: Add sodium fatty alcohol polyoxyethylene ether carboxylate and ethylene glycol diglycidyl ether to deionized water and stir well to obtain the finishing solution; The mass ratio of the deionized water, sodium fatty alcohol polyoxyethylene ether carboxylate, and ethylene glycol diglycidyl ether is 900-1000:20:

10.

10. The method for preparing the sweat-wicking and moisture-absorbing textile fabric according to claim 1, characterized in that, The immersion and rolling process is a two-dip and two-roll process with a roll residue of 78%-82%, a temperature of 40°C, and a immersion time of 10-12 minutes each time. The equilibration process involves equilibrating at 20-25℃ and 65%RH for 20-30 hours. The moisture-permeable surface of the polyester microporous membrane faces the middle layer.

Images