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

Abstract

The present 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 preparation method of the moisture-absorbing and quick-drying polyester fabric of the present invention comprises the following steps: blending super-hygroscopic polyester fiber and spandex fiber to obtain a blended yarn; weaving the blended yarn to obtain a moisture-absorbing and quick-drying polyester fabric; the super-hygroscopic polyester is obtained by melt-crosslinking PET slices and carboxylated three-layer core-shell particles; the carboxylated three-layer core-shell particles are obtained by carboxylating the three-layer core-shell particles with γ-aminopropyltriethoxysilane and pyromellitic dianhydride; the super-hygroscopic polyester fiber prepared by the present invention has water absorption and quick-drying properties, as well as fast thermal conductivity and certain ultraviolet protection properties. The polyester fabric prepared by the present invention is used in the preparation of sun-proof clothing and sportswear, greatly improving wearing comfort and functionality.

Description

Technical Field

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

[0002] The solar spectrum is primarily divided into visible light, infrared light, and ultraviolet light. Ultraviolet light has a wavelength of approximately 200-400nm. Prolonged exposure to ultraviolet light can cause sunburn and increase the risk of skin cancer. As people's health awareness continues to grow, they are placing increasing emphasis on UV protection. Sun-protective clothing has become increasingly popular in recent years.

[0003] Spandex (full name: polyurethane fiber), produced by the polymerization of diols and diisocyanate, is a highly elastic fiber often used in sun-protective clothing. Blended with polyester, spandex combines the durability of polyester with the stretchability of spandex. It is commonly used in sportswear and underwear, which require elasticity and shape retention, such as sweatpants and yoga pants. Existing sun-protective clothing also frequently uses blends of spandex and other fibers.

[0004] However, polyester has poor hygroscopicity, with a natural moisture regain of 0.4%, meaning it absorbs almost no water. This results in polyester fibers having good quick-drying properties in real life, but poor hygroscopicity, which can make people feel hot and dry, especially in the summer. Therefore, there is an urgent need to develop a moisture-absorbing and quick-drying polyester fabric to improve the wearing comfort of sun-protective clothing. 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, so as to solve the following technical problems:

[0006] Existing sun-protective clothing is obtained by blending spandex and polyester, but the resulting fabric has poor moisture absorption and quick-drying properties, and is not comfortable to wear as a sun-protective clothing fabric.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A method for preparing a moisture-absorbing and quick-drying polyester fabric comprises the following steps: weaving a blended yarn to obtain a moisture-absorbing and quick-drying polyester fabric;

[0009] The blended yarn is obtained by blending super absorbent polyester fiber and spandex fiber;

[0010] The preparation method of super absorbent polyester comprises the following steps:

[0011] S1: Add silica@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, and deionized water into a reactor and disperse them evenly. Add zinc nitrate hexahydrate, control the temperature to 50-55°C, add ammonia water to adjust the pH to 9-10, keep the reaction warm for 1-3 hours, filter, wash, dry, and calcine to obtain three-layer core-shell particles.

[0012] S2: γ-aminopropyltriethoxysilane, pyromellitic dianhydride, and N,N-dimethylformamide were added to a reaction kettle and dispersed evenly. The temperature was controlled at 50-60°C and the reaction was kept warm for 2-4 hours. The three-layer core-shell particles were mixed with deionized water and kept warm for 3-6 hours. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0013] S3: melt-extruding and granulating the hydroxyl-terminated polyester chips and the carboxylated three-layer core-shell particles to obtain a spinning material;

[0014] S4: melt-spinning, winding, and stretching the spinning raw materials to obtain super absorbent polyester fibers.

[0015] As a further embodiment of the present invention, the addition ratio of the silicon dioxide@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, deionized water, and zinc nitrate hexahydrate in S1 is 10 g: 2-4 g: 100-200 mL: 10-20 g.

[0016] As a further solution of the present invention: the addition ratio of γ-aminopropyltriethoxysilane, pyromellitic dianhydride, N,N-dimethylformamide, three-layer core-shell particles, and deionized water in S2 is 2-5g:2-5g:80-90mL:10g:10-20mL.

[0017] As a further solution of the present invention: the carboxylated three-layer core-shell particles in S3 account for 5-15% of the total mass of the spinning raw materials.

[0018] As a further embodiment of the present invention, the preparation method of silicon dioxide@aluminum nitride core-shell particles comprises the following steps:

[0019] A1: Place the nano-aluminum nitride particles in a phosphoric acid solution at room temperature for 24-32 hours, filter, and dry to obtain pretreated aluminum nitride powder;

[0020] A2: Add pretreated aluminum nitride powder, ethanol, deionized water, and ammonia water to a reaction flask and disperse evenly. Blend ethyl orthosilicate, a porogen, and anhydrous ethanol and add to the reaction flask. React at room temperature for 8-16 hours. Filter, wash, dry, and calcine to obtain silicon dioxide@aluminum nitride core-shell particles.

[0021] As a further embodiment of the present invention: the phosphoric acid solution in A1 is a 10-30 wt% phosphoric acid aqueous solution.

[0022] As a further embodiment of the present invention: in A2, the porogen is octadecyltrimethoxysilane, and the ammonia water is 25-30 wt % ammonia water;

[0023] The addition ratio of pretreated aluminum nitride powder, ethanol, deionized water, ammonia water, ethyl orthosilicate, porogen, and anhydrous ethanol is 10 g: 100-200 mL: 40-80 mL: 10-20 g: 15-30 g: 5-10 g: 30-60 g.

[0024] As a further embodiment of the present invention: the reaction temperature of the melt extrusion is 240-260°C.

[0025] As a further solution of the present invention: the melt spinning temperature is 290-300° C.; the winding rate is 600-900 m / mim; the stretching ratio is 3-5 times, and the stretching rate is 700-900 m / mim.

[0026] As a further solution of the present invention: the spandex content in the moisture-absorbing and quick-drying polyester fabric is 10-15wt%.

[0027] A moisture-absorbing and quick-drying polyester fabric is made by any of the above-mentioned preparation methods.

[0028] Beneficial effects of the present invention:

[0029] 1. Improve the hydrolysis resistance of aluminum nitride powder:

[0030] By passivating the nano-aluminum nitride particles with a phosphoric acid solution, an aluminum phosphate (AlPO4) protective layer is formed on the surface of the particles, effectively preventing them from undergoing hydrolysis reactions with water vapor in the air, thereby enhancing the stability of the aluminum nitride powder in practical applications.

[0031] 2. Construct a multi-layer core-shell structure to give multiple functions:

[0032] A mesoporous silica layer and a zinc oxide layer are sequentially constructed on the surface of the pretreated aluminum nitride powder to form three-layer core-shell structure particles, which realize the following multiple functions: the mesoporous silica layer has good capillary water absorption, giving the fiber excellent moisture absorption and quick-drying properties; the zinc oxide layer has excellent UV shielding performance, improving the UV protection function of the fabric; the silica layer can also isolate the inner and outer layers, avoiding direct contact between aluminum nitride and zinc oxide, and improving the overall stability of the material; the mesoporous structure and zinc oxide work synergistically to effectively reduce UV transmittance.

[0033] 3. Enhance thermal conductivity and cooling performance:

[0034] The aluminum nitride in the three-layer core-shell structure serves as the core thermal conductive medium. Combined with the 3D mesh mesoporous silica layer on the surface, it can construct a continuous thermal conductive path, allowing the fiber to quickly conduct heat, thereby giving the fiber excellent cooling properties.

[0035] 4. Achieve the unity of processability and washability:

[0036] The three-layer core-shell particles are carboxylated by using a polycarboxyl silane coupling agent modified with pyromellitic dianhydride, and then melt-crosslinked with terminal hydroxyl polyester chips to achieve a stable combination of the particles and the polyester matrix, thereby improving the fiber's wash resistance and the long-term stability of the fabric.

[0037] 5. Prepare functional textiles to improve comfort and practicality:

[0038] The modified fiber is blended with spandex to produce a fabric that not only has the properties of moisture absorption and quick drying, UV protection and a cool feeling, but also has enhanced breathability and wearing comfort due to the concave and convex structure of the fabric, making it suitable for the field of functional clothing.

[0039] In summary, the present invention constructs core-shell functional particles with a three-layer structure and introduces them into a polyester fiber system, which not only significantly improves the material's resistance to hydrolysis, moisture absorption and quick-drying properties, thermal conductivity and UV protection, but also effectively enhances the stability and comfort of the finished fabric, and has broad application prospects. DETAILED DESCRIPTION

[0040] 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.

[0041] Example 1: A super absorbent polyester fiber, the preparation method of which comprises the following steps:

[0042] S1: 10 g of nano-aluminum nitride particles (particle size: 50 nm) were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h. The mixture was filtered and dried to obtain pretreated aluminum nitride powder.

[0043] S2: 10 g of pretreated aluminum nitride powder, 100 mL of ethanol, 40 mL of deionized water, and 10 g of 28 wt% ammonia water were added to a reaction flask and dispersed evenly. 15 g of tetraethyl orthosilicate, 5 g of octadecyltrimethoxysilane, and 30 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 8 h, filtered, washed, and dried. The mixture was calcined at 550 °C in an argon atmosphere for 5 h to obtain silicon dioxide@aluminum nitride core-shell particles.

[0044] S3: 10 g of silica@aluminum nitride core-shell particles, 2 g of sodium dodecylbenzenesulfonate, and 100 mL of deionized water were added to a reactor and dispersed evenly. 10 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The mixture was kept warm for 1-3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0045] S4: 2 g of γ-aminopropyltriethoxysilane, 2 g of pyromellitic dianhydride, and 80 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 50°C and the reaction was kept warm for 2 h. 10 g of the three-layer core-shell particles and 10 mL of deionized water were mixed and kept warm for 3 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0046] S5: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0047] S6: The spinning raw materials are melt-spun, wound, and stretched to obtain super absorbent polyester fibers with a fineness of 75D.

[0048] Example 2: A super absorbent polyester fiber, the preparation method of which comprises the following steps:

[0049] S1: 10 g of nano-aluminum nitride particles (particle size: 50 nm) were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h. The mixture was filtered and dried to obtain pretreated aluminum nitride powder.

[0050] S2: 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water were added to a reaction flask and dispersed evenly. 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 12 h, filtered, washed, and dried. The mixture was calcined at 550 °C in an argon atmosphere for 5 h to obtain silicon dioxide@aluminum nitride core-shell particles.

[0051] S3: 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water were added to a reactor and dispersed evenly. 15 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The mixture was kept warm for 1-3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0052] S4: 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 55°C and the reaction was kept warm for 3 h. 10 g of the three-layer core-shell particles and 15 mL of deionized water were mixed and kept warm for 4.5 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0053] S5: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0054] S6: The spinning raw materials are melt-spun, wound, and stretched to obtain super absorbent polyester fibers with a fineness of 75D.

[0055] Example 3: A super absorbent polyester fiber, the preparation method of which comprises the following steps:

[0056] S1: 10 g of nano-aluminum nitride particles (particle size: 50 nm) were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h. The mixture was filtered and dried to obtain pretreated aluminum nitride powder.

[0057] S2: 10 g of pretreated aluminum nitride powder, 200 mL of ethanol, 80 mL of deionized water, and 20 g of 28 wt% ammonia water were added to a reaction flask and dispersed evenly. 30 g of tetraethyl orthosilicate, 10 g of octadecyltrimethoxysilane, and 60 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 16 h, filtered, washed, and dried. The mixture was calcined at 550 °C in an argon atmosphere for 5 h to obtain silicon dioxide@aluminum nitride core-shell particles.

[0058] S3: 10 g of silica@aluminum nitride core-shell particles, 4 g of sodium dodecylbenzenesulfonate, and 200 mL of deionized water were added to a reactor and dispersed evenly. 20 g of zinc nitrate hexahydrate was added, the temperature was controlled at 55°C, and ammonia water was added to adjust the pH to 10. The mixture was kept warm for 3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0059] S4: 5 g of γ-aminopropyltriethoxysilane, 5 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 60°C and the reaction was kept warm for 4 h. 10 g of the three-layer core-shell particles and 20 mL of deionized water were mixed and kept warm for 6 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0060] S5: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0061] S6: The spinning raw materials are melt-spun, wound, and stretched to obtain super absorbent polyester fibers with a fineness of 75D.

[0062] Example 4: A moisture-absorbing and quick-drying polyester fabric, the preparation method of which comprises the following steps:

[0063] A1: The super absorbent polyester fiber prepared in Example 1 and spandex fiber (fineness 40D) are blended in a mass ratio of 88:12 to obtain a blended yarn;

[0064] A2: Blended yarns are woven into a moisture-absorbing and quick-drying polyester fabric. The resulting fabric has a horizontal density of 90 wales / 5 cm, a vertical density of 140 rows / 5 cm, and a surface density of 140 g / cm 2 .

[0065] Example 5: A moisture-absorbing and quick-drying polyester fabric. Compared with Example 4, the preparation method thereof is that the super absorbent polyester fiber prepared in Example 1 used in Example 4 is replaced by an equal amount of the super absorbent polyester fiber prepared in Example 2. The remaining components and preparation method are exactly the same as those in Example 4.

[0066] Example 6: A moisture-absorbing and quick-drying polyester fabric. Compared with Example 4, the preparation method thereof is that the super absorbent polyester fiber prepared in Example 1 used in Example 4 is replaced by an equal amount of the super absorbent polyester fiber prepared in Example 3. The remaining components and preparation method are exactly the same as those in Example 4.

[0067] Comparative Example 1:

[0068] A super hygroscopic polyester, the preparation method of which comprises the following steps:

[0069] S1: 10 g of nano-aluminum nitride particles (particle size: 50 nm) were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h. The mixture was filtered and dried to obtain pretreated aluminum nitride powder.

[0070] S2: 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water were added to a reaction flask and dispersed evenly. 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 12 h, filtered, washed, and dried. The mixture was calcined at 550 °C in an argon atmosphere for 5 h to obtain silicon dioxide@aluminum nitride core-shell particles.

[0071] S3: 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water were added to a reactor and dispersed evenly. 15 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The mixture was kept warm for 1-3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0072] S4: 3.5 g of γ-aminopropyltriethoxysilane, 1.76 g of maleic anhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 55°C and the reaction was kept warm for 3 h. 10 g of the three-layer core-shell particles and 15 mL of deionized water were mixed and kept warm for 4.5 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0073] S5: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0074] S6: The spinning raw materials are melt-spun, wound, and stretched to obtain super absorbent polyester fibers with a fineness of 75D.

[0075] Comparative Example 2:

[0076] A super hygroscopic polyester, the preparation method of which comprises the following steps:

[0077] S1: 10 g of nano-aluminum nitride particles (particle size: 50 nm) were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h. The mixture was filtered and dried to obtain pretreated aluminum nitride powder.

[0078] S2: 10 g of pretreated aluminum nitride powder, 150 mL of ethanol, 60 mL of deionized water, and 15 g of 28 wt% ammonia water were added to a reaction flask and dispersed evenly. 22 g of ethyl orthosilicate and 45 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 12 h, filtered, washed, and dried. The mixture was calcined at 550 °C in an argon atmosphere for 5 h to obtain silicon dioxide@aluminum nitride core-shell particles.

[0079] S3: 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water were added to a reactor and dispersed evenly. 15 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The mixture was kept warm for 1-3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0080] S4: 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 55°C and the reaction was kept warm for 3 h. 10 g of the three-layer core-shell particles and 15 mL of deionized water were mixed and kept warm for 4.5 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0081] S5: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0082] S6: The spinning raw materials are melt-spun, wound, and stretched to obtain super absorbent polyester fibers with a fineness of 75D.

[0083] Comparative Example 3:

[0084] A super hygroscopic polyester, the preparation method of which comprises the following steps:

[0085] S1: 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 were added to a reaction flask and dispersed evenly. 22 g of tetraethyl orthosilicate, 7 g of octadecyltrimethoxysilane, and 45 g of anhydrous ethanol were blended and added to the reaction flask. The mixture was reacted at room temperature for 12 h, filtered, washed, and dried, and calcined at 550 °C in an argon atmosphere for 5 h to obtain silica@aluminum nitride core-shell particles.

[0086] S2: 10 g of silica@aluminum nitride core-shell particles, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water were added to a reactor and dispersed evenly. 15 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The mixture was kept warm for 1-3 h, filtered, washed, and dried. The mixture was calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0087] S3: 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 55°C and the reaction was kept warm for 3 h. 10 g of the three-layer core-shell particles and 15 mL of deionized water were mixed and kept warm for 4.5 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0088] S4: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0089] S5: melt-spinning, winding, and stretching the spinning raw materials to obtain super absorbent polyester fibers with a fineness of 75D.

[0090] Comparative Example 4:

[0091] A super absorbent polyester fiber, the preparation method of which comprises the following steps:

[0092] S1: 10 g of nano-aluminum nitride particles were placed in 100 mL of 20% phosphoric acid solution and treated at room temperature for 24 h, filtered, and dried to obtain pretreated aluminum nitride powder;

[0093] S2: 10 g of pretreated aluminum nitride powder, 3 g of sodium dodecylbenzenesulfonate, and 150 mL of deionized water were added to a reactor and dispersed evenly. 15 g of zinc nitrate hexahydrate was added, the temperature was controlled at 50°C, and ammonia water was added to adjust the pH to 9. The reaction was kept warm for 1-3 h, filtered, washed, and dried. The particles were calcined at 400°C for 2 h in an argon atmosphere to obtain three-layer core-shell particles.

[0094] S3: 3.5 g of γ-aminopropyltriethoxysilane, 4 g of pyromellitic dianhydride, and 90 mL of N,N-dimethylformamide were added to a reactor and dispersed evenly. The temperature was controlled at 55°C and the reaction was kept warm for 3 h. 10 g of the three-layer core-shell particles and 15 mL of deionized water were mixed and kept warm for 4.5 h. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles.

[0095] S4: 90 g of hydroxyl-terminated polyester chips (purchased from Tianjin Petrochemical Chemical Fiber Plant, [η] = 0.66 dL / g) and 10 g of carboxylated three-layer core-shell particles were melt-extruded to form pellets at a reaction temperature of 255°C to obtain a spinning material;

[0096] S5: melt-spinning, winding, and stretching the spinning raw materials to obtain super absorbent polyester fibers with a fineness of 75D.

[0097] Comparative Example 5:

[0098] A moisture-absorbing and quick-drying polyester fabric is disclosed. Compared with Example 5, only the super absorbent polyester fiber prepared in Example 2 used in Example 5 is replaced by the super absorbent polyester fiber prepared in Comparative Example 1 in equal amounts, and the remaining components and preparation method are completely consistent with those in Example 5.

[0099] Comparative Example 6:

[0100] A moisture-absorbing and quick-drying polyester fabric is disclosed. Compared with Example 5, only the super absorbent polyester fiber prepared in Example 2 used in Example 5 is replaced by the super absorbent polyester fiber prepared in Comparative Example 2 in equal amounts, and the remaining components and preparation method are completely consistent with those in Example 5.

[0101] Comparative Example 7:

[0102] A moisture-absorbing and quick-drying polyester fabric is disclosed. Compared with Example 5, only the super absorbent polyester fiber prepared in Example 2 used in Example 5 is replaced by the super absorbent polyester fiber prepared in Comparative Example 3 in equal amounts, and the remaining components and preparation method are completely consistent with those in Example 5.

[0103] Comparative Example 8:

[0104] A moisture-absorbing and quick-drying polyester fabric is disclosed. Compared with Example 5, only the super absorbent polyester fiber prepared in Example 2 used in Example 5 is replaced by the super absorbent polyester fiber prepared in Comparative Example 4 in equal amounts, and the remaining components and preparation method are completely consistent with those in Example 5.

[0105] Performance testing:

[0106] (1) Anti-ultraviolet performance: According to GB / T 18830-2009 “Evaluation of the anti-ultraviolet performance of textiles”, the YG(B)912E textile anti-ultraviolet performance tester was used, and the sun protection factor UPF and the average transmittance of ultraviolet rays A and B, T(UVA) were selected. AV and T(UVB) AV As the evaluation index of characterization; the test results are shown in Table 1; according to the 5A procedure of GB / T 8629-2001 "Household washing and drying procedure for textile testing", the drying procedure is oven drying method, and then tested again; the test results are shown in Table 1;

[0107] Table 1 Statistical table of ultraviolet protection performance test data of Examples 4-6 and Comparative Examples 5-8

[0108]

[0109] As shown in Table 1, the fabrics of Examples 4-6 of the present invention all exhibit excellent UV protection in their initial (unwashed) state, with UPF values ​​exceeding 50, and low average UVA transmittance (T(UVA)AV) and UVB transmittance (T(UVB)AV) values ​​of 3.2%-3.6% and 1.8%-2.2%, respectively. Even after 40 washes, these fabrics maintained their excellent protection, with only a slight increase in transmittance, demonstrating excellent washability and stable, reliable UV protection.

[0110] In contrast, although Comparative Examples 5-8 also have UPF values ​​of 50+ before washing, their transmittance is generally higher than that of the examples. Furthermore, the transmittance increases significantly after 40 washes. In particular, Comparative Example 8 sees its T(UVA)AV and T(UVB)AV increase to 7.7% and 8.7%, respectively, while its UPF value drops to 40+, demonstrating poor washability and protection stability.

[0111] The super absorbent polyester fiber prepared by cross-linking the carboxylated three-layer core-shell particles and the hydroxyl-terminated polyester chips has good ultraviolet protection performance and good water washing resistance due to cross-linking through chemical bonds.

[0112] (2) Moisture absorption and quick-drying property after washing: 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 property 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.

[0113] Table 2 Moisture absorption and quick-drying judgment criteria

[0114]

[0115] Table 3 Statistical table of moisture absorption performance test data of Examples 4-6 and Comparative Examples 5-8

[0116]

[0117] The experimental data in Table 3 show that Examples 4-6 outperformed Comparative Examples 5-8 in both water absorption rate and wetting time. Specifically, the wetting times of the Examples were generally controlled within 3.3-3.6 seconds, with rapid penetration and responsiveness, all achieving Level 4 performance. In contrast, the wetting times of the Comparative Examples were generally over 5.1 seconds, indicating a sluggish response. In particular, Comparative Example 8 exhibited significant lags, with the wetting and penetration times reaching 6.1 and 6.6 seconds, respectively.

[0118] In terms of water absorption rate, the examples all maintained rates above 43%, with the permeable surface reaching 55.8% / s to 56.8% / s, significantly exceeding the maximum value of 47.8% / s in the comparative example. The difference between comparative example 8 and the comparative example 8, which only achieved a rate of 33.4%, was particularly pronounced. While all samples received a water absorption rate rating of 3, the specific values ​​indicate that the examples exhibit superior overall performance.

[0119] Table 4 Surface water diffusion performance test statistics of Examples 4-6 and Comparative Examples 5-8

[0120]

[0121] As can be seen from Table 4, the experimental results show that the maximum wetting radius of Examples 4 to 6 on the penetration surface all reached more than 18.0 mm, and the liquid water diffusion rate was 3.5 to 3.7 mm / s. Both indicators were rated as level 4, showing excellent liquid water lateral diffusion performance, which can quickly guide moisture to a larger area of ​​the fabric, helping to achieve rapid drying.

[0122] In comparison, the maximum wetting radius of Comparative Examples 5 to 8 was significantly smaller, at only 11.6 to 14.2 mm, and the diffusion rate was only 2.1 to 3.0 mm / s. Some samples only reached Level 3, indicating low water diffusion efficiency, which affected the overall moisture absorption and quick-drying performance.

[0123] (3) Moisture regain: tested according to GB / T 9995-1997 “Textile materials - Determination of moisture content and moisture regain - Oven drying method”. The test results are shown in Table 5.

[0124] (4) Test of instant coolness upon contact (Q-max value)

[0125] Tested according to GB / T 35263-2017 "Testing and evaluation of instantaneous cooling properties of textiles".

[0126] Method: Use a hot plate cooling tester to simulate the heat flow when the skin contacts the fabric (unit:).

[0127] Eligibility threshold: Q-max ≥ can claim cooling function.

[0128] Key point: Before testing, the instrument must be equilibrated in a standard temperature and humidity environment (20±2℃, 65±4%) for 24 hours.

[0129] Thermal conductivity at 35°C was tested according to ASTM D5470 (steady-state heat flow method). The test results are shown in Table 1. The test was repeated according to the 5A procedure of GB / T8629-2001 "Household Washing and Drying Procedure for Textile Testing," using the oven drying method. The test results are shown in Table 5.

[0130] Table 5 Statistical table of cooling performance test data of Examples 4-6 and Comparative Examples 5-8

[0131]

[0132] As shown in 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 0.9% to 1.6% of Comparative Examples 5 to 8. This shows that the fabrics of the examples have stronger moisture absorption and water retention capabilities under normal temperature and humidity conditions, which helps to improve wearing comfort.

[0133] In terms of cooling performance, the Q-max value is used to evaluate the cooling intensity at the moment of contact. The Q-max value of the embodiment reaches 0.19-0.23 W·cm⁻² after 0 water washings, which is much higher than the 0.14-0.18 W·cm⁻² of most comparison examples, reflecting good initial cooling performance; even after 40 water washings, the embodiment still maintains a relatively high Q-max value (0.14-0.20), while the comparison examples generally drop to 0.09-0.12, indicating that the cooling effect of the comparison examples is more obviously attenuated.

[0134] Based on the above experimental results, the fabric provided by the present invention shows significant advantages in moisture absorption and quick-drying performance, UV protection ability, cooling performance and water washing stability, reflecting the core technical value of the carboxylated three-layer core-shell particles.

[0135] 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 method for preparing a moisture-absorbing and quick-drying polyester fabric, characterized in that: The steps include: Weaving the blended yarn to obtain a moisture-absorbing and quick-drying polyester fabric; The blended yarn is obtained by blending super absorbent polyester fiber and spandex fiber; The preparation method of the super absorbent polyester comprises the following steps: S1: Add silica@aluminum nitride core-shell particles, sodium dodecylbenzenesulfonate, and deionized water into a reactor and disperse them evenly. Add zinc nitrate hexahydrate, control the temperature to 50-55°C, add ammonia water to adjust the pH to 9-10, keep the reaction warm for 1-3 hours, filter, wash, dry, and calcine to obtain three-layer core-shell particles. S2: γ-aminopropyltriethoxysilane, pyromellitic dianhydride, and N,N-dimethylformamide were added to a reaction kettle and dispersed evenly. The temperature was controlled at 50-60°C and the reaction was kept warm for 2-4 hours. The three-layer core-shell particles were mixed with deionized water and kept warm for 3-6 hours. The mixture was centrifuged, washed, and dried to obtain carboxylated three-layer core-shell particles. S3: melt-extruding and granulating the hydroxyl-terminated polyester chips and the carboxylated three-layer core-shell particles to obtain a spinning material; S4: melt-spinning, winding, and stretching the spinning raw materials to obtain super absorbent polyester fibers; The preparation method of the silicon dioxide@aluminum nitride core-shell particles comprises the following steps: A1: Place the nano-aluminum nitride particles in a phosphoric acid solution at room temperature for 24-32 hours, filter, and dry to obtain pretreated aluminum nitride powder; A2: Add pretreated aluminum nitride powder, ethanol, deionized water, and ammonia water to a reaction flask and disperse evenly. Blend ethyl orthosilicate, a porogen, and anhydrous ethanol and add to the reaction flask. React at room temperature for 8-16 hours. Filter, wash, dry, and calcine to obtain silicon dioxide@aluminum nitride core-shell particles.

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

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

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

5. The method for preparing a moisture-absorbing and quick-drying polyester fabric according to claim 4, characterized in that: In A2, the porogen is octadecyltrimethoxysilane and the ammonia is 25-30 wt% ammonia; The addition ratio of pretreated aluminum nitride powder, ethanol, deionized water, ammonia water, ethyl orthosilicate, porogen, and anhydrous ethanol is 10 g: 100-200 mL: 40-80 mL: 10-20 g: 15-30 g: 5-10 g: 30-60 g.

6. The method for preparing 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.

7. The method for preparing a moisture-absorbing and quick-drying polyester fabric according to claim 1, characterized in that: The temperature of the melt spinning is 290-300° C.; the winding rate is 600-900 m / mim; the stretching ratio is 3-5 times, and the stretching rate is 700-900 m / mim.

8. The method for preparing 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%.

9. A moisture-absorbing and quick-drying polyester fabric, characterized in that: Prepared by the preparation method according to any one of claims 1 to 8.

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