Moisture-absorbing and quick-drying polyester fabric and preparation method thereof

Abstract

The invention discloses a moisture-absorbing and quick-drying polyester fabric and a preparation method thereof, and relates to the technical field of fabric fiber materials. The invention relates to a preparation method of a moisture-absorbing and quick-drying polyester fabric. The preparation method comprises the following steps: blending super-moisture-absorbing polyester fibers and spandex fibers to obtain blended yarns; weaving the blended yarn to obtain the moisture-absorbing and quick-drying polyester fabric. The super-moisture-absorption polyester is obtained by melting and cross-linking PET slices and carboxylated three-layer core-shell particles; the carboxylated three-layer core-shell particles are obtained by performing carboxylation treatment on the three-layer core-shell particles by gamma-aminopropyltriethoxysilane and pyromellitic dianhydride; the super-moisture-absorption polyester fiber prepared by the method has water-absorption quick-drying performance, high heat conductivity and certain ultraviolet protection performance, and the polyester fabric prepared by the method is applied to preparation of sun protection clothes and sportswear, so that the wearing comfort and functionality are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric fibers, and particularly to a moisture-absorbing and quick-drying polyester fabric and a preparation method thereof. Background Art

[0002] The solar spectrum is mainly divided into visible light, infrared light and ultraviolet light. Among them, the wavelength of ultraviolet light is about 200-400nm. Prolonged ultraviolet irradiation will cause sunburn of the human skin and increase the risk of skin cancer. With the continuous enhancement of people's health awareness, people pay more and more attention to the ultraviolet protection ability. In recent years, sunscreen clothes have been widely loved.

[0003] Spandex (fully named polyurethane fiber) is prepared by polymerization of diol and diisocyanate. It is a high-elasticity fiber and is often used as the fabric of sunscreen clothes. The fabric obtained by blending spandex and polyester has both the durability of polyester and the stretchability of spandex. It is common in sportswear, underwear and other clothes that require elasticity and shape retention, such as sports pants or yoga pants. Existing sunscreen clothes often adopt the blending of spandex and other fibers.

[0004] However, polyester has poor moisture absorption, with a natural moisture regain of 0.4% and hardly absorbs water. This results in good quick-drying performance but poor moisture absorption performance of polyester fibers in actual life use, especially giving people a feeling of heat in summer. Therefore, it is urgent to develop a moisture-absorbing and quick-drying polyester fabric to improve the wearing comfort of sunscreen clothes. Summary of the Invention

[0005] The purpose of the present invention is to provide a moisture-absorbing and quick-drying polyester fabric and a preparation method thereof, and solve the following technical problems: Existing sunscreen clothes are obtained by blending spandex and polyester, but the obtained fabric has poor moisture absorption and quick-drying performance, and poor wearing comfort as the fabric of sunscreen clothes.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A preparation method of a moisture-absorbing and quick-drying polyester fabric includes the following steps: weaving the blended yarn to obtain the moisture-absorbing and quick-drying polyester fabric; The blended yarn is obtained by blending super moisture-absorbing polyester fibers and spandex fibers; The preparation method of super moisture-absorbing polyester includes the following steps: S1: Add silica@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, and deionized water into a reaction kettle and disperse them evenly. Add zinc nitrate hexahydrate, control the temperature at 50-55°C, add ammonia water to adjust the pH to 9-10, keep the temperature for reaction for 1-3h, carry out suction filtration, washing, drying, and calcination to obtain three-layer core-shell particles; S2: Add γ-aminopropyltriethoxysilane, pyromellitic dianhydride, and N,N-dimethylformamide into a reaction kettle and disperse them evenly. Control the temperature at 50 - 60 °C and keep the reaction for 2 - 4 h. Mix the three-layer core-shell particles with deionized water, keep the reaction for 3 - 6 h, then centrifuge, wash, and dry to obtain carboxylated three-layer core-shell particles; S3: Melt-extrude and pelletize the hydroxyl-terminated polyester chips and the carboxylated three-layer core-shell particles to obtain the spinning raw material; S4: Melt-spin, wind, and stretch the spinning raw material to obtain the super-hydroscopic polyester fiber.

[0007] As a further scheme of the present invention: In S1, the addition ratio of the silicon dioxide@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, deionized water, and zinc nitrate hexahydrate is 10 g: 2 - 4 g: 100 - 200 mL: 10 - 20 g.

[0008] As a further scheme of the present invention: In S2, the addition ratio of γ-aminopropyltriethoxysilane, pyromellitic dianhydride, N,N-dimethylformamide, three-layer core-shell particles, and deionized water is 2 - 5 g: 2 - 5 g: 80 - 90 mL: 10 g: 10 - 20 mL.

[0009] As a further scheme of the present invention: In S3, the carboxylated three-layer core-shell particles account for 5 - 15% of the total mass of the spinning raw material.

[0010] As a further scheme of the present invention: The preparation method of the silicon dioxide@aluminum nitride core-shell particles includes the following steps: A1: Place the nano-aluminum nitride particles in a phosphoric acid solution and treat them at room temperature for 24 - 32 h. Filter by suction and dry to obtain the pretreated aluminum nitride powder; A2: Add the pretreated aluminum nitride powder, ethanol, deionized water, and ammonia water into a reaction flask and disperse them evenly. After mixing tetraethyl orthosilicate, pore-forming agent, and absolute ethanol, add them into the reaction flask and react at room temperature for 8 - 16 h. Filter by suction, wash, dry, and calcine to obtain the silicon dioxide@aluminum nitride core-shell particles.

[0011] As a further scheme of the present invention: In A1, the phosphoric acid solution is a 10 - 30 vt% phosphoric acid aqueous solution.

[0012] As a further scheme of the present invention: In A2, the pore-forming agent is octadecyltrimethoxysilane, and the ammonia water is 25 - 30 wt% ammonia water; The addition ratio of the pretreated aluminum nitride powder, ethanol, deionized water, ammonia water, tetraethyl orthosilicate, pore-forming agent, and absolute ethanol is 10 g: 100 - 200 mL: 40 - 80 mL: 10 - 20 g: 15 - 30 g: 5 - 10 g: 30 - 60 g.

[0013] As a further solution of the present invention: the reaction temperature for melt extrusion is 240 - 260 °C.

[0014] As a further solution of the present invention: the temperature for melt spinning is 290 - 300 °C; the winding speed is 600 - 900 m / min; the draw ratio is 3 - 5 times, and the draw speed is 700 - 900 m / min.

[0015] As a further solution of the present invention: the content of spandex in the moisture-absorbing and quick-drying polyester fabric is 10 - 15 wt%.

[0016] A moisture-absorbing and quick-drying polyester fabric is made by any of the above preparation methods.

[0017] The beneficial effects of the present invention: 1. Improve the hydrolysis resistance of aluminum nitride powder: By passivating the nano-aluminum nitride particles with phosphoric acid solution, a protective layer of aluminum phosphate (AlPO4) is formed on the particle surface, effectively preventing it from undergoing hydrolysis reaction with water vapor in the air, and enhancing the stability of aluminum nitride powder in practical applications.

[0018] 2. Construct a multi-layer core-shell structure to endow multiple functions: A mesoporous silica layer and a zinc oxide layer are successively constructed on the surface of the pretreated aluminum nitride powder to form three-layer core-shell structure particles, realizing the following multiple functions: the mesoporous silica layer has good capillary water absorption, endowing the fiber with excellent moisture-absorbing and quick-drying properties; the zinc oxide layer has excellent ultraviolet shielding performance, enhancing the ultraviolet protection function of the fabric; the silica layer can also isolate the inner and outer layers, preventing direct contact between aluminum nitride and zinc oxide, and improving the overall stability of the material; the mesoporous structure and zinc oxide act synergistically to effectively reduce the ultraviolet transmittance.

[0019] 3. Enhance the thermal conductivity and cool feeling performance: Aluminum nitride in the three-layer core-shell structure serves as the core heat conduction medium, combined with the 3D network mesoporous silica layer on the surface, can construct a continuous heat conduction path, enabling the fiber to quickly conduct heat, thus endowing the fiber with excellent cool feeling performance.

[0020] 4. Achieve the unity of processability and washability: By carboxylating the three-layer core-shell particles with a polycarboxyl silane coupling agent modified by pyromellitic dianhydride and then melt-crosslinking with hydroxyl-terminated polyester chips, stable bonding between the particles and the polyester matrix can be achieved, improving the washability of the fiber and the long-term use stability of the fabric.

[0021] 5. Prepare functional textiles to improve comfort and practicality: The modified fibers are blended and woven with spandex to produce a fabric that not only has the characteristics of moisture absorption and quick drying, ultraviolet protection, and cool feeling, but also has enhanced breathability and wearing comfort due to the concave-convex structure of the fabric texture, and is suitable for the field of functional clothing.

[0022] In summary, by constructing core-shell functional particles with a three-layer structure and introducing them into the polyester fiber system, the present invention not only significantly improves the hydrolysis resistance, moisture absorption and quick drying property, thermal conductivity, and ultraviolet protection ability of the material, but also effectively enhances the stability and comfort of the finished fabric, and has broad application prospects. Specific Embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Example 1: A super moisture-absorbing polyester fiber, and its preparation method includes the following steps: S1: Place 10 g of nano-aluminum nitride particles (particle size: 50 nm) in 100 mL of 20 vt% phosphoric acid solution and treat at room temperature for 24 h, then filter and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 100 mL of ethanol, 40 mL of deionized water, and 10 g of 28 wt% ammonia water into a reaction flask and disperse evenly. After mixing 15 g of tetraethyl orthosilicate, 5 g of octadecyltrimethoxysilane, and 30 g of absolute ethanol, add them into the reaction flask and react at room temperature for 8 h, then filter, wash, and dry. Calcinate at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S3: Add 10 g of silica@aluminum nitride core-shell particles, 2 g of sodium dodecylbenzenesulfonate, and 100 mL of deionized water into a reaction kettle and disperse evenly. Add 10 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, and keep the temperature for reaction for 1 - 3 h, then filter, wash, and dry. Calcinate at 400 °C for 2 h in an argon atmosphere to obtain three-layer core-shell particles; S4: Add 2 g of γ-aminopropyltriethoxysilane, 2 g of pyromellitic dianhydride, and 80 mL of N,N-dimethylformamide into a reaction kettle and disperse evenly. Control the temperature at 50 °C and keep the temperature for reaction for 2 h. Mix 10 g of three-layer core-shell particles and 10 mL of deionized water, keep the temperature for reaction for 3 h, then centrifuge, wash, and dry to obtain carboxylated three-layer core-shell particles; S5: Melt-extrude and pelletize 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η] = 0.66 dL / g) and 10 g of carboxylated core-shell particles with three layers. The reaction temperature for melt extrusion is 255 °C to obtain a spinning raw material; S6: Melt-spin, wind up, and stretch the spinning raw material to obtain super-absorbent polyester fibers with a fineness of 75 D.

[0025] Example 2: A super-absorbent polyester fiber, and its preparation method includes the following steps: S1: Place 10 g of nano-aluminum nitride particles (particle size: 50 nm) in 100 mL of 20 vt% phosphoric acid solution and treat at room temperature for 24 h. Filter by suction and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water into a reaction flask and disperse evenly. After mixing 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of absolute ethanol, add them into the reaction flask and react at room temperature for 12 h. Filter by suction, wash, and dry, and calcine at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S3: Add 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water into a reaction kettle and disperse evenly. Add 15 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, keep the temperature for reaction for 1 - 3 h, filter by suction, wash, and dry, and calcine at 400 °C for 2 h in an argon atmosphere to obtain core-shell particles with three layers; S4: Add 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide into a reaction kettle and disperse evenly. Control the temperature at 55 °C and keep the temperature for reaction for 3 h. Mix 10 g of core-shell particles with three layers and 15 mL of deionized water, keep the temperature for reaction for 4.5 h, centrifuge, wash, and dry to obtain carboxylated core-shell particles with three layers; S5: Melt-extrude and pelletize 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η] = 0.66 dL / g) and 10 g of carboxylated core-shell particles with three layers. The reaction temperature for melt extrusion is 255 °C to obtain a spinning raw material; S6: Melt-spin, wind up, and stretch the spinning raw material to obtain super-absorbent polyester fibers with a fineness of 75 D.

[0026] Example 3: A super-absorbent polyester fiber, and its preparation method includes the following steps: S1: Place 10 g of nano-aluminum nitride particles (particle size: 50 nm) in 100 mL of 20 vt% phosphoric acid solution and treat at room temperature for 24 h. Filter by suction and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 200 mL of ethanol, 80 mL of deionized water, and 20 g of 28 wt% ammonia water into a reaction flask and disperse them evenly. After mixing 30 g of tetraethyl orthosilicate, 10 g of octadecyltrimethoxysilane, and 60 g of absolute ethanol, add them into the reaction flask. React at room temperature for 16 h, then filter, wash, and dry. Calcinate at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S3: Add 10 g of silica@aluminum nitride core-shell particles, 4 g of sodium dodecylbenzenesulfonate, and 200 mL of deionized water into a reaction kettle and disperse them evenly. Add 20 g of zinc nitrate hexahydrate, control the temperature at 55 °C, add ammonia water to adjust the pH to 10, keep the temperature and react for 3 h, then filter, wash, and dry. Calcinate at 400 °C for 2 h in an argon atmosphere to obtain three-layer core-shell particles; S4: Add 5 g of γ-aminopropyltriethoxysilane, 5 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide into a reaction kettle and disperse them evenly. Control the temperature at 60 °C and keep the temperature and react for 4 h. Mix 10 g of three-layer core-shell particles and 20 mL of deionized water, keep the temperature and react for 6 h, then centrifuge, wash, and dry to obtain carboxylated three-layer core-shell particles; S5: Melt-extrude and pelletize 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η]=0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles. The reaction temperature for melt-extrusion is 255 °C to obtain spinning raw materials; S6: Melt-spin, wind, and stretch the spinning raw materials to obtain super-hydroscopic polyester fibers with a fineness of 75 D.

[0027] Example 4: A moisture-absorbing and quick-drying polyester fabric, and its preparation method includes the following steps: A1: Blended-spin the super-hydroscopic polyester fibers prepared in Example 1 and spandex fibers (fineness 40 D) with a mass ratio of 88:12 to obtain blended yarns; A2: Weave the blended yarns to obtain a moisture-absorbing and quick-drying polyester fabric; the obtained fabric has a horizontal density of 90 wales / 5 cm; a vertical density of 140 courses / 5 cm; and a surface density of 140 g / cm 2 .

[0028] Example 5: A moisture-absorbing and quick-drying polyester fabric, compared with Example 4, only replace the super-hydroscopic polyester fibers prepared in Example 1 used in Example 4 with the super-hydroscopic polyester fibers prepared in Example 2 in equal amounts, and the other components and preparation methods are exactly the same as those in Example 4.

[0029] Example 6: A moisture-absorbing and quick-drying polyester fabric, compared with Example 4, only replace the super-hydroscopic polyester fibers prepared in Example 1 used in Example 4 with the super-hydroscopic polyester fibers prepared in Example 3 in equal amounts, and the other components and preparation methods are exactly the same as those in Example 4.

[0030] Comparative Example 1: A super hygroscopic polyester, and its preparation method comprises the following steps: S1: Place 10 g of nano-aluminum nitride particles (particle size: 50 nm) in 100 mL of 20 vt% phosphoric acid solution, treat at room temperature for 24 h, filter by suction and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water into a reaction flask and disperse evenly. After mixing 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of absolute ethanol, add them into the reaction flask, react at room temperature for 12 h, filter by suction, wash, and dry. Calcinate at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S3: Add 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water into a reaction kettle and disperse evenly. Add 15 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, keep the temperature and react for 1 - 3 h, filter by suction, wash, and dry. Calcinate at 400 °C for 2 h in an argon atmosphere to obtain three-layer core-shell particles; S4: Add 3.5 g of γ-aminopropyltriethoxysilane, 1.76 g of maleic anhydride, and 90 mL of N,N-dimethylformamide into a reaction kettle and disperse evenly. Control the temperature at 55 °C and keep the temperature and react for 3 h. Mix 10 g of three-layer core-shell particles and 15 mL of deionized water, keep the temperature and react for 4.5 h, centrifuge, wash, and dry to obtain carboxylated three-layer core-shell particles; S5: Melt and extrude granulate 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η]=0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles. The reaction temperature for melt extrusion is 255 °C to obtain spinning raw materials; S6: Melt spin, wind, and stretch the spinning raw materials to obtain super hygroscopic polyester fibers with a fineness of 75 D.

[0031] Comparative Example 2: A super hygroscopic polyester, and its preparation method comprises the following steps: S1: Place 10 g of nano-aluminum nitride particles (particle size: 50 nm) in 100 mL of 20 vt% phosphoric acid solution, treat at room temperature for 24 h, filter by suction and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water into a reaction flask and disperse evenly. After mixing 22 g of tetraethyl orthosilicate and 45 g of absolute ethanol, add them into the reaction flask, react at room temperature for 12 h, filter by suction, wash, and dry. Calcinate at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S3: Add 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water into a reaction kettle and disperse evenly. Then add 15 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, keep the temperature for reaction for 1 - 3 h, carry out suction filtration, washing, and drying, and calcine at 400 °C for 2 h in an argon atmosphere to obtain three-layer core-shell particles; S4: Add 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide into a reaction kettle and disperse evenly. Control the temperature at 55 °C and keep the temperature for reaction for 3 h. Mix 10 g of three-layer core-shell particles and 15 mL of deionized water, keep the temperature for reaction for 4.5 h, carry out centrifugation, washing, and drying to obtain carboxylated three-layer core-shell particles; S5: Melt and extrude granulate 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η]=0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles. The reaction temperature for melt extrusion is 255 °C to obtain spinning raw materials; S6: Melt spin, wind up, and stretch the spinning raw materials to obtain super-hydroscopic polyester fibers with a fineness of 75 D.

[0032] Comparative Example 3: A super-hydroscopic polyester, and its preparation method includes the following steps: S1: Add 10 g of nano-aluminum nitride particles (particle size: 50 nm), 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water into a reaction flask and disperse evenly. Mix 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of absolute ethanol and then add them into the reaction flask, react at room temperature for 12 h, carry out suction filtration, washing, and drying, and calcine at 550 °C for 5 h in an argon atmosphere to obtain silica@aluminum nitride core-shell particles; S2: Add 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water into a reaction kettle and disperse evenly. Then add 15 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, keep the temperature for reaction for 1 - 3 h, carry out suction filtration, washing, and drying, and calcine at 400 °C for 2 h in an argon atmosphere to obtain three-layer core-shell particles; S3: Add 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide into a reaction kettle and disperse evenly. Control the temperature at 55 °C and keep the temperature for reaction for 3 h. Mix 10 g of three-layer core-shell particles and 15 mL of deionized water, keep the temperature for reaction for 4.5 h, carry out centrifugation, washing, and drying to obtain carboxylated three-layer core-shell particles; S4: Melt-extrude and pelletize 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η] = 0.66 dL / g) and 10 g of carboxylated core-shell particles with a melt-extrusion reaction temperature of 255 °C to obtain spinning raw materials; S5: Melt-spin, wind, and stretch the spinning raw materials to obtain super-hydroscopic polyester fibers with a fineness of 75 D.

[0033] Comparative Example 4: A super-hydroscopic polyester fiber, and its preparation method includes the following steps: S1: Place 10 g of nano-aluminum nitride particles in 100 mL of 20 vt% phosphoric acid solution and treat at room temperature for 24 h, then filter and dry to obtain pretreated aluminum nitride powder; S2: Add 10 g of pretreated aluminum nitride powder, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water into the reaction kettle and disperse evenly. Add 15 g of zinc nitrate hexahydrate, control the temperature at 50 °C, add ammonia water to adjust the pH to 9, keep the temperature for reaction for 1 - 3 h, then filter, wash, and dry. Calcinate at 400 °C for 2 h in an argon atmosphere to obtain core-shell particles; S3: Add 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide into the reaction kettle and disperse evenly. Control the temperature at 55 °C and keep the temperature for reaction for 3 h. Mix 10 g of core-shell particles and 15 mL of deionized water, keep the temperature for reaction for 4.5 h, then centrifuge, wash, and dry to obtain carboxylated core-shell particles; S4: Melt-extrude and pelletize 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Fiber Factory, [η] = 0.66 dL / g) and 10 g of carboxylated core-shell particles with a melt-extrusion reaction temperature of 255 °C to obtain spinning raw materials; S5: Melt-spin, wind, and stretch the spinning raw materials to obtain super-hydroscopic polyester fibers with a fineness of 75 D.

[0034] Comparative Example 5: A moisture-absorbing and quick-drying polyester fabric. Compared with Example 5, only the super-hydroscopic polyester fibers prepared in Example 2 used in Example 5 are replaced with the super-hydroscopic polyester fibers prepared in Comparative Example 1 in equal amounts, and the other components and preparation methods are exactly the same as those in Example 5.

[0035] Comparative Example 6: A moisture-absorbing and quick-drying polyester fabric. Compared with Example 5, only the super-hydroscopic polyester fibers prepared in Example 2 used in Example 5 are replaced with the super-hydroscopic polyester fibers prepared in Comparative Example 2 in equal amounts, and the other components and preparation methods are exactly the same as those in Example 5.

[0036] Comparative Example 7: A moisture-absorbing and quick-drying polyester fabric, compared with Example 5, only replaces the super-moisture-absorbing polyester fiber prepared in Example 2 used in Example 5 with the super-moisture-absorbing polyester fiber prepared in Comparative Example 3 in equal amounts, and the remaining components and preparation methods are exactly the same as those in Example 5.

[0037] Comparative Example 8: A moisture-absorbing and quick-drying polyester fabric, compared with Example 5, only replaces the super-moisture-absorbing polyester fiber prepared in Example 2 used in Example 5 with the super-moisture-absorbing polyester fiber prepared in Comparative Example 4 in equal amounts, and the remaining components and preparation methods are exactly the same as those in Example 5.

[0038] Performance testing: (1) Anti-ultraviolet performance: According to GB / T 18830-2009 "Evaluation of anti-ultraviolet performance of textiles", using a YG(B)912E type textile anti-ultraviolet performance tester, the sun protection factor UPF and the average transmittance T(UVA) AV and T(UVB) AV are used as the evaluation indicators for characterization; the test results are shown in Table 1; according to the 5A program of the standard GB / T 8629-2001 "Textiles - Domestic washing and drying procedures for testing", the drying procedure is dried by the oven drying method and tested again; the test results are shown in Table 1; Table 1 Statistical table of ultraviolet protection performance test data of Examples 4-6 and Comparative Examples 5-8

[0039] As can be seen from Table 1, the fabrics of Examples 4 to 6 of the present invention all have excellent ultraviolet protection performance in the initial state (unwashed), the UPF value reaches 50+, and the average transmittance of UVA (T(UVA)AV) and the average transmittance of UVB (T(UVB)AV) are respectively maintained at low levels of 3.2% to 3.6% and 1.8% to 2.2%. After 40 washes, the examples can still maintain good protection ability, and the transmittance only increases slightly, indicating that they have excellent wash resistance and stable and reliable ultraviolet protection effect.

[0040] In contrast, although the UPF values of Comparative Examples 5 to 8 are also 50+ when unwashed, the transmittance is generally higher than that of the examples, and the increase in transmittance is obvious after 40 washes. In particular, for Comparative Example 8, the T(UVA)AV and T(UVB)AV increase to 7.7% and 8.7% respectively, and the UPF value also drops to 40+, showing poor wash resistance and protection stability.

[0041] The carboxylated three-layer core-shell particles prepared by the present invention and the super-moisture-absorbing polyester fiber crosslinked with the hydroxyl-terminated polyester chips have good ultraviolet protection performance, and due to crosslinking by chemical bonds, they have good wash resistance.

[0042] (2)Moisture Absorption and Quick Drying Performance after Washing: The fabrics prepared in Examples 4-6 and Comparative Examples 5-8 were tested according to GB / T 21655.2-2019 "Textiles - Evaluation of moisture absorption and quick drying - 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 in accordance with GB / T 8629-2017 "Textiles - Home laundering and drying procedures for testing", hung to dry, and then tested again; The test results are shown in Tables 3-4; Table 2 Judgment Criteria for Moisture Absorption and Quick Drying Performance

[0043] Table 3 Statistical Table of Moisture Absorption Performance Test Data for Examples 4-6 and Comparative Examples 5-8

[0044] The experimental data in Table 3 show that Examples 4 to 6 are superior to Comparative Examples 5 to 8 in both water absorption rate and wetting time. Specifically, the wetting time of the examples is generally controlled within 3.3 to 3.6 seconds, with fast penetration and rapid response, all reaching a level of 4; while the wetting time of the comparative examples is generally above 5.1 seconds, with slow response. In particular, for Comparative Example 8, the wetting time of the wetted surface and the penetration surface are as high as 6.1 seconds and 6.6 seconds respectively, which is significantly lagged.

[0045] In terms of water absorption rate, the water absorption rates of the examples are all maintained above 43%, and the water absorption rate of the penetration surface reaches 55.8% / s to 56.8% / s, which is significantly higher than the maximum value of the comparative examples (47.8% / s). For Comparative Example 8, it is only 33.4% / s, and the gap is particularly obvious. The water absorption rate grades of all samples are rated as 3, but from the specific values, the overall performance of the examples is more excellent.

[0046] Table 4 Statistical Table of Surface Water Diffusion Performance for Examples 4-6 and Comparative Examples 5-8

[0047] As can be seen from Table 4, the experimental results show that the maximum wetting radius on the penetration surface of Examples 4 to 6 all reach above 18.0 mm, and the liquid water diffusion speed is 3.5 to 3.7 mm / s. Both indicators are rated as 4, demonstrating excellent lateral liquid water diffusion performance, which can quickly direct moisture to a larger area of the fabric, contributing to rapid drying.

[0048] In contrast, the maximum wetting radius of Comparative Examples 5 to 8 is significantly smaller, only 11.6 to 14.2 mm, and the diffusion speed is also only 2.1 to 3.0 mm / s, and some samples only reach the level of 3. The moisture diffusion efficiency is low, affecting the overall moisture absorption and quick drying performance.

[0049] (3) Moisture regain: Tested according to GB / T 9995-1997 "Determination of moisture content and moisture regain of textile materials - Oven drying method", and the test results are shown in Table 5; (4) Instantaneous cool feeling test upon contact (Q-max value) Tested according to GB / T 35263-2017 "Textiles - Detection and evaluation of instantaneous cool feeling performance upon contact", Method: Use a hot plate type cool feeling tester to simulate the heat flux when the skin contacts the fabric (unit: ).

[0050] Qualified threshold: Q-max ≥ can claim the cool feeling function.

[0051] Key point: It needs to be balanced for 24 hours in a standard temperature and humidity environment (20±2°C, 65±4%) before testing.

[0052] Test the thermal conductivity at 35°C according to ASTM D5470 (steady-state heat flow method), and the test results are shown in Table 1; according to the 5A program of the standard GB / T8629-2001 "Textiles - Domestic washing and drying procedures for testing", the drying procedure is dried by the oven drying method and tested again; the test results are shown in Table 5; Table 5 Statistical table of cool feeling performance test data for Examples 4-6 and Comparative Examples 5-8

[0053] As can be seen from Table 5, the experimental data show that the moisture regain of Examples 4 to 6 is between 1.8% and 2.0%, which is significantly higher than that of Comparative Examples 5 to 8, which is 0.9% to 1.6%. This shows that the fabric of the examples has stronger moisture absorption and water retention ability in normal temperature and humidity environment, which helps to improve wearing comfort.

[0054] In terms of cool feeling performance, the Q-max value is used to evaluate the instantaneous cool feeling intensity. When the number of water washes is 0, the Q-max value of the examples reaches 0.19 - 0.23 W·cm⁻², which is much higher than that of most comparative examples, which is 0.14 - 0.18 W·cm⁻², showing good initial cool feeling performance; even after 40 water washes, the examples still maintain a relatively high Q-max value (0.14 - 0.20), while the comparative examples generally drop to 0.09 - 0.12, indicating that the cool feeling effect of the comparative examples decays more significantly.

[0055] Based on the above experimental results, the fabric provided by the present invention shows significant advantages in moisture absorption and quick drying performance, ultraviolet protection ability, cool feeling performance and water wash resistance stability, reflecting the core technical value of carboxylated three-layer core-shell particles.

[0056] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A preparation method of a moisture-absorbing and quick-drying polyester fabric, characterized in that, It includes the following steps: Weave the blended yarn to obtain a moisture-absorbing and quick-drying polyester fabric; The blended yarn is obtained by blending super-moisture-absorbing polyester fibers and spandex fibers; The preparation method of the super-moisture-absorbing polyester includes the following steps: S1: Add silica@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, and deionized water into a reaction kettle and disperse them evenly. Add zinc nitrate hexahydrate, control the temperature at 50-55°C, add ammonia water to adjust the pH to 9-10, keep the temperature for reaction for 1-3h, filter, wash, dry, and calcine to obtain three-layer core-shell particles; S2: Add γ-aminopropyltriethoxysilane, pyromellitic dianhydride, and N,N-dimethylformamide into a reaction kettle and disperse them evenly. Control the temperature at 50-60°C and keep the temperature for reaction for 2-4h. Mix the three-layer core-shell particles with deionized water and keep the temperature for reaction for 3-6h. Centrifuge, wash, and dry to obtain carboxylated three-layer core-shell particles; S3: Melt-extrude and pelletize the hydroxyl-terminated polyester chips and the carboxylated three-layer core-shell particles to obtain spinning raw materials; S4: Melt-spin the spinning raw materials, wind them up, and perform stretching treatment to obtain super-moisture-absorbing polyester fibers.

2. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that In S1, the addition ratio of silica@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, deionized water, and zinc nitrate hexahydrate is 10g: 2-4g: 100-200mL: 10-20g.

3. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, In S2, the addition ratio of γ-aminopropyltriethoxysilane, pyromellitic dianhydride, N,N-dimethylformamide, three-layer core-shell particles, and deionized water is 2-5g: 2-5g: 80-90mL: 10g: 10-20mL.

4. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, In S3, the carboxylated three-layer core-shell particles account for 5-15% of the total mass of the spinning raw materials.

5. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, The preparation method of the silica@aluminum nitride core-shell particles includes the following steps: A1: Place the nano-aluminum nitride particles in a phosphoric acid solution and treat them at room temperature for 24-32h. Filter and dry to obtain pretreated aluminum nitride powder; A2: Add the pretreated aluminum nitride powder, ethanol, deionized water, and ammonia water into a reaction flask and disperse them evenly. After mixing tetraethyl orthosilicate, pore-forming agent, and absolute ethanol, add them into the reaction flask and react at room temperature for 8-16h. Filter, wash, dry, and calcine to obtain silica@aluminum nitride core-shell particles.

6. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 5, characterized in that, In A2, the pore-forming agent is octadecyltrimethoxysilane, and the ammonia water is 25-30wt% ammonia water; The addition ratio of pretreated aluminum nitride powder, ethanol, deionized water, ammonia water, tetraethyl orthosilicate, pore-forming agent, and absolute ethanol is 10g: 100-200mL: 40-80mL: 10-20g: 15-30g: 5-10g: 30-60g.

7. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, The reaction temperature of melt extrusion is 240-260°C.

8. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, The temperature of melt spinning is 290-300°C; the winding speed is 600-900m / min; the stretching multiple is 3-5 times, and the stretching speed is 700-900m / min.

9. The preparation method of a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that, The spandex content in the moisture-absorbing and quick-drying polyester fabric is 10-15wt%.

10. A moisture-absorbing and quick-drying polyester fabric, characterized in that, It is made by the preparation method described in any one of claims 1-9.

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