An antibacterial and breathable yoga wear fabric and a preparation method thereof

Abstract

The present application relates to the field of yoga clothing fabric, in particular to an antibacterial and breathable yoga clothing fabric and a preparation method thereof, which is used to solve the problems of poor antibacterial property, insufficient breathability, and short antibacterial effect of the existing yoga clothing fabric; the composite modified bamboo fiber, the composite modified hollow nylon, and the modal fiber are respectively opened and impurity-removed, and are combined with the spandex core yarn to be carded, three ways are drawn, and the roving is processed, and then the spun yarn machine filament core-spun blending process is used to obtain the blended yarn, the blended yarn is used as the warp yarn, the mesh tissue fabric is knitted on the warp knitting machine, the fabric is subjected to pre-shrinking, liquid rolling, and setting treatment in sequence, and then is cooled to obtain the antibacterial and breathable yoga clothing fabric; the fabric has the core properties of long-acting antibacterial property, breathability, sweat-wicking, softness, skin-friendliness, washing resistance, and durability, is environmentally friendly and non-irritating, and perfectly meets the requirements of the yoga movement scene.

Description

Technical Field

[0001] This invention relates to the field of yoga wear fabrics, specifically to an antibacterial and breathable yoga wear fabric and its preparation method. Background Technology

[0002] Yoga, as a form of exercise that combines fitness and body shaping, has become increasingly popular among consumers in recent years. During yoga practice, the body sweats easily and the range of motion is large, which places extremely high demands on the breathability and antibacterial properties of yoga clothing fabrics.

[0003] Most yoga clothing fabrics currently available are made of pure cotton, ordinary polyester fiber, or spandex blends, which have several drawbacks: pure cotton fabrics are highly absorbent but have poor breathability, easily sticking to the skin after sweating and difficult to dry quickly, making them prone to bacterial growth and odor; ordinary polyester fiber fabrics have insufficient breathability and poor antibacterial properties, which can easily cause skin discomfort with long-term wear; some antibacterial fabrics achieve their antibacterial effect only by adding antibacterial agents in the finishing process, and these antibacterial agents are easily lost during washing, resulting in rapid decline in antibacterial performance, and there may be safety hazards due to chemical antibacterial agent residues.

[0004] Therefore, developing a yoga wear fabric that has a long-lasting antibacterial effect, good breathability, and comfortable wear has become an urgent technical problem to be solved in the textile industry. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide an antibacterial and breathable yoga clothing fabric and its preparation method.

[0006] The objective of this invention can be achieved through the following technical solutions: In a first aspect, this application provides an antibacterial and breathable yoga wear fabric, comprising the following components by weight: The composition includes 40-48 parts of composite modified bamboo fiber, 25-30 parts of composite modified hollow nylon, 15-18 parts of modal fiber, and 10-12 parts of spandex. The spandex is a 40D continuous filament; the modal fiber has a linear density of 1.1 dtex. The composite modified bamboo fiber is prepared by the following steps: Step a1: Immerse bamboo fiber in deionized water, add anhydrous ethanol, and stir for 30-35 minutes at a temperature of 25-30℃ and a stirring rate of 500 r / min. Then transfer it to a vacuum drying oven and dry it for 2-3 hours at a temperature of 80-85℃ and a vacuum degree of 0.08 MPa until the moisture content is ≤5%. Cool it to room temperature, then spread it evenly on the sample rack of the plasma treatment instrument with a thickness of 1 cm. Close the chamber door, introduce argon gas, and treat it for 8-10 minutes at a vacuum degree of 15 Pa and a power of 40 W. Start the equipment to perform surface activation treatment. After the treatment is completed, take out the fiber to obtain plasma-treated bamboo fiber. Step a2: Add ammonium persulfate and deionized water to a beaker and stir magnetically for 10-12 minutes at a stirring rate of 750-800 r / min. Then adjust the pH to 6.0 with sodium hydroxide solution. Immerse the plasma-treated bamboo fiber in the beaker and preheat at 50℃ for 15-17 minutes. Then add methacryloyloxyethyltrimethylammonium chloride and react at 60-65℃ and a stirring rate of 550-600 r / min for 2.5-2.7 hours. After the reaction is complete, rinse with deionized water at 55-60℃ 3-5 times for 10 minutes each time to obtain grafted bamboo fiber. Step a3: Add nano zinc oxide to deionized water, add polyethylene glycol, put it into an ultrasonic disperser, disperse for 40-44 min at a frequency of 60 kHz and a temperature of 40 ℃, let stand for 5-7 min, then immerse the grafted bamboo fiber, stir and adsorb for 30-32 min at a temperature of 35-40 ℃ and a stirring rate of 450-500 r / min, filter with gauze to obtain bamboo fiber loaded with nano zinc oxide; Step a4: Add glutaraldehyde and deionized water to a beaker and stir for 10-12 minutes at a temperature of 25-30℃ and a stirring rate of 280-300 r / min. Adjust the pH to 4.5 with hydrochloric acid. Then, immerse the bamboo fiber loaded with nano-zinc oxide into the beaker and stir for 30-35 minutes at a temperature of 45-50℃ and a stirring rate of 380-400 r / min. Remove the beaker, soak it in sodium bicarbonate solution for 10-12 minutes, and then rinse it with deionized water to adjust the pH to 6.5-7.5. Then place it in a vacuum drying oven and dry it for 1.5-2 hours at a temperature of 100-105℃ and a vacuum degree of 0.08 MPa. Cool it to room temperature to obtain composite modified bamboo fiber.

[0007] In a preferred embodiment of the present invention, the bamboo fiber in step a1 is recycled bamboo pulp fiber with a length of 38 mm and a linear density of 1.2 dtex.

[0008] In a preferred embodiment of the present invention, the ratio of bamboo fiber, deionized water and anhydrous ethanol in step a1 is 100-140g: 500-700mL: 5-7mL.

[0009] In a preferred embodiment of the present invention, the ratio of ammonium persulfate, deionized water, plasma-treated bamboo fiber, and methacryloyloxyethyltrimethylammonium chloride used in step a2 is 2-3g: 2000-3000mL: 100-150g: 16-24g.

[0010] In a preferred embodiment of the present invention, the concentration of the sodium hydroxide solution in step a2 is 0.1 mol / L.

[0011] In a preferred embodiment of the present invention, the ratio of nano zinc oxide, deionized water, polyethylene glycol and grafted bamboo fiber in step a3 is 1.6-2.1g: 2000-2250mL: 6-8g: 100-133g.

[0012] In a preferred embodiment of the present invention, the particle size of the nano zinc oxide in step a3 is 20-50 nm.

[0013] In a preferred embodiment of the present invention, the polyethylene glycol in step a3 has the product number P3265.

[0014] In a preferred embodiment of the present invention, the ratio of glutaraldehyde, deionized water, bamboo fiber loaded with nano zinc oxide, and sodium bicarbonate solution in step a4 is 24-26g: 1500-1625mL: 100-108g: 1500-1625mL.

[0015] In a preferred embodiment of the present invention, the mass fraction of glutaraldehyde in step a4 is 25%.

[0016] In a preferred embodiment of the present invention, the sodium bicarbonate solution in step a4 has a mass fraction of 0.5%.

[0017] In a preferred embodiment of the present invention, the concentration of hydrochloric acid in step a4 is 0.1 mol / L.

[0018] The composite modified hollow nylon is prepared by the following steps: Step b1: Immerse the hollow nylon in deionized water for 15-17 minutes, stirring manually twice during the process. Remove and squeeze dry, then place in a dryer and dry at 75-80℃ for 15-17 minutes until the moisture content is ≤5%. Cool to room temperature, then lay flat on the sample rack of the plasma treatment instrument with a thickness of 1 cm. Close the chamber door, introduce argon gas, adjust the vacuum degree to 15-20 Pa, set the power to 30 W and the treatment time to 6-8 minutes, and start the equipment for surface activation treatment. After the treatment is completed, remove the fiber to obtain plasma-treated hollow nylon. Step b2: Add chitosan and deionized water to a beaker, add glacial acetic acid dropwise while stirring, adjust the pH to 4.5-5.0, place the beaker in a constant temperature water bath, heat to 40℃, then immerse the plasma-treated hollow nylon in the beaker for 30-32 minutes, stirring once every 10 minutes, then place it in a rolling mill for rolling at a pressure of 0.1 MPa, controlling the rolling rate at 65-70%, then immerse it in sodium bicarbonate solution for 5-7 minutes, rinse with deionized water until the pH is 6.5-7.5, remove and squeeze dry, then spread it flat on a dryer tray and dry at 85-90℃ for 15-17 minutes, cool to room temperature to obtain composite modified hollow nylon.

[0019] In a preferred embodiment of the present invention, the ratio of hollow nylon to deionized water in step b1 is 50-52g: 800-1040mL.

[0020] In a preferred embodiment of the present invention, the hollow nylon in step b1 has a linear density of 1.0 dtex and a hollowness of 35%.

[0021] In a preferred embodiment of the present invention, the ratio of chitosan, deionized water, glacial acetic acid, plasma-treated hollow nylon, and sodium bicarbonate solution in step b2 is 5-6g: 1000-1200mL: 10-12mL: 50-60g: 500-900mL.

[0022] In a preferred embodiment of the present invention, the sodium bicarbonate solution in step b2 has a mass fraction of 0.5%.

[0023] Secondly, this application provides a method for preparing an antibacterial and breathable yoga wear fabric, comprising the following steps: Step 1: Weigh out 40-48 parts of composite modified bamboo fiber, 25-30 parts of composite modified hollow nylon, 15-18 parts of modal fiber and 10-12 parts of spandex according to the weight proportions. Step 2: The composite modified bamboo fiber, composite modified hollow nylon, and modal fiber are respectively placed into the opening machine and opened for 10-12 minutes to remove short fibers and impurities. Spandex does not need to be opened and is directly fed as the core yarn. The opened short fibers are then fed into the carding machine in conjunction with the core yarn feeding device and carded into a cotton web. The cotton web is then placed into the drawing frame and drawn three times at a drawing speed of 20m / min. The roving is then processed on the roving frame with a twist of 300 twists / m to obtain roving. The roving is then placed into the spinning frame with a twist of 900 twists / m, a spinning speed of 12m / min, and a core yarn feeding speed of 15m / min. The spinning process uses a long filament core-spun blended spinning process, with spandex as the core and other fibers as the sheath to obtain blended yarn. Step 3: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 8-10 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill, and the liquid extraction rate is controlled at 60-70%. Then, it is placed in a setting machine and treated for 4-5 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga clothing fabric is obtained.

[0024] The beneficial effects of this invention are: This invention discloses an antibacterial and breathable yoga wear fabric and its preparation method. The method involves separately opening and removing impurities from composite modified bamboo fiber, composite modified hollow nylon, and modal fiber, then combining them with spandex core yarn through carding, three-stage drawing, and roving processing. The resulting yarn is then spun using a core-spun filament blending process on a spinning machine to obtain 30S blended yarn. This blended yarn is used as warp yarn to weave a mesh fabric on a warp knitting machine. The fabric undergoes pre-shrinking, liquid-pressing, and setting treatments, followed by cooling to obtain the antibacterial and breathable yoga wear fabric. The composite modified bamboo fiber, as the core raw material of the fabric, achieves long-lasting antibacterial function through its loaded nano-zinc oxide, effectively inhibiting bacterial growth. Combined with its porous structure and increased specific surface area after plasma treatment, it significantly improves the fabric's breathability and sweat-wicking performance. Furthermore, through cation grafting and cross-linking curing treatment, it is combined with composite modified hollow nylon and modal fiber... The blended fabrics exhibit enhanced compatibility, superior structural stability, and outstanding washability, ensuring the fabric's softness and skin-friendliness while continuously providing yoga wear with the core advantages of long-lasting antibacterial properties and breathability. The composite modified hollow nylon, with its uniform chitosan loading, imparts natural and long-lasting antibacterial properties to the fabric, inhibiting bacterial growth and preventing odors. Its retained hollow structure, combined with more permeable pores after plasma treatment, significantly improves the fabric's breathability and sweat-wicking ability. Furthermore, plasma activation and neutralization treatment enhances the fiber's compatibility with other raw materials and improves structural stability, while retaining the abrasion-resistant and crisp characteristics of nylon itself. This enhances the washability and athletic suitability of yoga wear fabrics. Ultimately, this results in antibacterial and breathable yoga wear fabrics that combine long-lasting antibacterial properties, breathability, sweat-wicking, softness, skin-friendliness, and washability, while also being environmentally friendly and non-irritating, perfectly suited to the needs of yoga activities.

[0025] In the preparation of antibacterial and breathable yoga wear fabric, a composite modified bamboo fiber was first prepared. The bamboo fiber was first cleaned and dried to remove surface impurities, and then subjected to plasma surface activation. High-energy particles bombarded the bamboo fiber surface, breaking the C-C and CO bonds of the cellulose molecular chains, forming micro-etching pits, increasing the fiber's specific surface area. During the etching process, the hydroxyl groups on the cellulose surface were oxidized or broken, generating active groups. These active sites provide anchoring points for the subsequent grafting polymerization reaction, solving the problem of low grafting efficiency caused by the inertness of the bamboo fiber surface. Subsequently, cationic groups were introduced into the bamboo fiber surface, changing the surface potential from negative to positive, providing a potential for nano-polymerization. The electrostatic adsorption of zinc oxide provides the foundation, while ammonium persulfate serves as a water-soluble free radical initiator. The sulfate free radicals generated during decomposition are the key active species initiating polymerization. These sulfate free radicals abstract active hydrogen adjacent to the hydroxyl groups on the bamboo fiber cellulose molecular chain, causing the cellulose to form macromolecular free radicals. Methacryloxyethyltrimethylammonium chloride is a cationic graft monomer, introducing cationic groups to enhance the subsequent loading capacity of nano-zinc oxide. The macromolecular free radicals undergo an addition reaction with the carbon-carbon double bonds of the methacryloxyethyltrimethylammonium chloride monomer, initiating free radical polymerization. The methacryloxyethyltrimethylammonium chloride monomer continuously attaches to the cellulose molecular chain, forming grafts. The polymer is then polymerized, and the polymerization is terminated through free radical coupling or disproportionation. The grafted polymer chains are firmly bonded to the cellulose surface. Nano-zinc oxide is then uniformly loaded onto the fiber surface, imparting antibacterial properties. The grafted bamboo fiber surface is positively charged, while the nano-zinc oxide surface is weakly negatively charged in aqueous solution due to hydroxyl dissociation. The attraction between positive and negative charges allows the nano-zinc oxide to be rapidly adsorbed onto the fiber surface. The residual hydroxyl groups in the cellulose form hydrogen bonds with the hydroxyl groups on the nano-zinc oxide surface, further enhancing the loading stability. Subsequently, glutaraldehyde cross-linking and curing occur. The two aldehyde groups of glutaraldehyde can react with polyhydroxy compounds to form acetals, and also react with the hydroxyl groups of the bamboo fiber cellulose to form a fiber cross-linking structure. The cross-linking bonds between cellulose molecules enhance the stability of the fiber structure and react with the hydroxyl groups on the surface of nano-zinc oxide to anchor the nano-zinc oxide to the fiber surface, preventing it from falling off during subsequent use. Plasma activation provides active sites for graft polymerization, graft modification provides a charge basis for nano-load, and cross-linking curing ensures load stability and fiber performance. The synergistic effect of cationic grafting and electrostatic adsorption of nano-zinc oxide improves load uniformity. The synergistic effect of hydrogen bonding and cross-linking reaction strengthens load stability, ultimately achieving a balance between high antibacterial efficiency, structural stability, and breathability, perfectly meeting the core requirements of yoga wear fabrics for softness, breathability, washability, and long-lasting antibacterial properties.

[0026] In the preparation of antibacterial and breathable yoga wear fabric, a composite modified hollow nylon was first prepared. The hollow nylon was first cleaned and dried, then subjected to plasma surface activation. The core component of hollow nylon is polyamide, which has strong surface inertness. The core of plasma treatment is to break this inertness and construct reaction sites. High-energy electrons and argon ions in the argon plasma bombard the nylon surface, breaking the C / C bonds and amide bonds of the polyamide molecular chain, forming micro-etching pits. This increases the specific surface area of ​​the fiber and makes the pore channels of the hollow structure more permeable. During the etching process, amide bonds break to generate amino and carboxyl groups, while methylene groups on the molecular chain are oxidized to generate carbon free radicals and hydroxyl groups. These active groups provide anchoring points for the chitosan loading in step b2, solving the problem of poor chitosan adhesion and easy detachment caused by the inertness of the nylon surface. The surface of the plasma-treated hollow nylon contains -COOH, -NH2, and -OH, which interact with protonated chitosan through electrostatic adsorption. The -COOH on the nylon surface dissociates to generate -COO. - With chitosan's -NH3 + Electrostatic attraction is formed, enabling chitosan to quickly adhere to the fiber surface. Hydrogen bonding occurs, with the -OH and -NH2 groups on the nylon surface interacting with the -OH and -NH3 groups on the chitosan molecular chains. + Multiple hydrogen bonds are formed between them, further enhancing adsorption stability and preventing chitosan from falling off during subsequent sizing and washing processes. The sizinged fibers are then immersed in a sodium bicarbonate solution, where the sodium bicarbonate dissociates to generate HCO3-. - Neutralize the residual glacial acetic acid, after neutralization H + As the concentration decreases, the protonated amino groups of chitosan lose H+. + The chitosan is restored to a neutral amino group, transforming from a water-soluble to an insoluble state, forming a uniform chitosan film that firmly adheres to the nylon surface. Chitosan loading imparts antibacterial properties; the protonated amino groups combine with anionic groups on the bacterial cell membrane, disrupting cell membrane permeability and leading to bacterial lysis. Chitosan molecular chains adsorb onto the bacterial surface, hindering bacterial metabolism and reproduction. This process, through uniform loading, allows hollow nylon to possess both antibacterial properties and its original breathability. Plasma treatment only slightly etches the nylon surface without damaging its hollow structure, ensuring the fabric's breathability. Chitosan loading imparts antibacterial properties, achieving both breathability and antibacterial functions, while also meeting the fabric's environmental protection requirements. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: This embodiment describes a method for preparing an antibacterial and breathable yoga wear fabric, including the following steps: Step s1: Immerse 100g of bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex in linear density) in 500mL of deionized water, add 5mL of anhydrous ethanol, and stir for 30min at 25℃ and 500r / min. Then transfer it to a vacuum drying oven and dry it for 2h at 80℃ and 0.08MPa to make the moisture content ≤5%. Cool it to room temperature, then spread it flat on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, and treat it for 8min at 15Pa and 40W. Start the equipment for surface activation treatment. After the treatment is completed, take out the fiber to obtain plasma-treated bamboo fiber. Step s2: Add 2g of ammonium persulfate and 2000mL of deionized water to a beaker and stir magnetically for 10min at a stirring rate of 750r / min. Then adjust the pH to 6.0 with 0.1mol / L sodium hydroxide solution. Immerse 100g of plasma-treated bamboo fiber into the beaker and preheat at 50℃ for 15min. Then add 16g of methacryloyloxyethyltrimethylammonium chloride and react at 60℃ and a stirring rate of 550r / min for 2.5h. After the reaction is complete, rinse three times with deionized water at 55℃ for 10min each time to obtain grafted bamboo fiber. Step s3: Add 1.6g of nano zinc oxide (nano zinc oxide with a particle size of 20nm) to 2000mL of deionized water, add 6g of polyethylene glycol (polyethylene glycol product number P3265), put it into an ultrasonic disperser, disperse it for 40min at a frequency of 60kHz and a temperature of 40℃, let it stand for 5min, then immerse 100g of grafted bamboo fiber in it, stir and adsorb it for 30min at a temperature of 35℃ and a stirring rate of 450r / min, filter it with gauze to obtain bamboo fiber loaded with nano zinc oxide; Step s4: Add 24g of glutaraldehyde (25% by mass) and 1500mL of deionized water to a beaker. Stir the mixture at 25℃ and 280r / min for 10min. Adjust the pH to 4.5 with 0.1mol / L hydrochloric acid. Then, immerse 100g of bamboo fiber loaded with nano zinc oxide into the beaker and stir the mixture at 45℃ and 380r / min for 30min. Remove the beaker and soak it in 1500mL of sodium bicarbonate solution (0.5% by mass) for 10min. Rinse with deionized water until the pH reaches 6.5. Place the beaker in a vacuum drying oven and dry it at 100℃ and 0.08MPa for 1.5h. Cool to room temperature to obtain composite modified bamboo fiber. Step s5: Immerse 50g of hollow nylon (linear density of 1.0dtex and hollowness of 35%) in 800mL of deionized water for 15min, stirring manually twice during the soaking process. Remove and squeeze dry, place in a dryer, and dry at 75℃ for 15min until the moisture content is ≤5%. Cool to room temperature, then spread evenly on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, adjust the vacuum to 15Pa, set the power to 30W and the treatment time to 6min, and start the equipment for surface activation treatment. After the treatment is completed, remove the fiber to obtain plasma-treated hollow nylon. Step s6: Add 5g of chitosan and 1000mL of deionized water to a beaker, add 10mL of glacial acetic acid dropwise while stirring, adjust the pH to 4.5, place the beaker in a constant temperature water bath, heat to 40℃, then immerse 50g of plasma-treated hollow nylon in the beaker for 30min, stirring once every 10min during this period, then put it into a rolling mill for rolling at a pressure of 0.1MPa, with the rolling rate controlled at 65%, then immerse it in 500mL of sodium bicarbonate solution (sodium bicarbonate solution mass fraction of 0.5%) for 5min, rinse with deionized water until the pH is 6.5, take it out and squeeze dry, then spread it flat on a dryer tray and dry it at a temperature of 85℃ for 15min, cool to room temperature to obtain composite modified hollow nylon; Step s7: Weigh out 40 parts of composite modified bamboo fiber, 25 parts of composite modified hollow nylon, 15 parts of modal fiber and 10 parts of spandex according to the weight parts. Step s8: The composite modified bamboo fiber, composite modified hollow nylon, and modal fiber (modal fiber linear density is 1.1 dtex) are respectively put into the opening machine and opened for 10 minutes to remove short fibers and impurities. Spandex (spandex is 40D continuous filament) does not need to be opened and is directly fed as core yarn. The opened short fibers are then fed into the carding machine and carded into a cotton web. The cotton web is then put into the drawing frame and drawn three times at a drawing speed of 20 m / min. The roving is then processed on the roving frame with a twist of 300 twists / m to obtain roving. The roving is then put into the spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core yarn feeding speed of 15 m / min. The spinning adopts a filament core-spun blending process, with spandex as the core and other fibers as the sheath, to obtain blended yarn (linear density 30S). Step s9: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 8 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 60%. Then, it is placed in a setting machine and treated for 4 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0029] Example 2: This embodiment describes a method for preparing an antibacterial and breathable yoga wear fabric, including the following steps: Step s1: Immerse 120g of bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex in linear density) in 600mL of deionized water, add 6mL of anhydrous ethanol, and stir for 33min at 27℃ and 500r / min. Then transfer it to a vacuum drying oven and dry it for 2.5h at 83℃ and 0.08MPa to make the moisture content ≤5%. Cool it to room temperature, then spread it flat on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, and treat it for 9min at 15Pa and 40W. Start the equipment for surface activation treatment. After the treatment is completed, take out the fiber to obtain plasma-treated bamboo fiber. Step s2: Add 2.5g of ammonium persulfate and 2500mL of deionized water to a beaker and stir magnetically for 11min at a stirring rate of 770r / min. Then adjust the pH to 6.0 with 0.1mol / L sodium hydroxide solution. Immerse 120g of plasma-treated bamboo fiber into the beaker and preheat at 50℃ for 16min. Then add 20g of methacryloyloxyethyltrimethylammonium chloride and react at 63℃ and a stirring rate of 570r / min for 2.6h. After the reaction is complete, rinse four times with deionized water at 57℃ for 10min each time to obtain grafted bamboo fiber. Step s3: Add 1.85g of nano zinc oxide (30nm particle size) to 2125mL of deionized water, add 7g of polyethylene glycol (polyethylene glycol product number P3265), place in an ultrasonic disperser, disperse for 42min at a frequency of 60kHz and a temperature of 40℃, let stand for 6min, then immerse 116.5g of grafted bamboo fiber, stir and adsorb for 31min at a temperature of 37℃ and a stirring rate of 470r / min, filter with gauze to obtain bamboo fiber loaded with nano zinc oxide; Step s4: Add 25g of glutaraldehyde (25% by mass) and 1562mL of deionized water to a beaker. Stir the mixture at 27℃ and 290r / min for 11min. Adjust the pH to 4.5 with 0.1mol / L hydrochloric acid. Then, immerse 104g of bamboo fiber loaded with nano-zinc oxide into the beaker and stir the mixture at 47℃ and 390r / min for 33min. Remove the beaker and soak it in 1562mL of sodium bicarbonate solution (0.5% by mass) for 11min. Rinse with deionized water to pH 7. Then place the beaker in a vacuum drying oven and dry it at 103℃ and 0.08MPa for 1.7h. Cool to room temperature to obtain composite modified bamboo fiber. Step s5: Immerse 51g of hollow nylon (linear density of 1.0dtex and hollowness of 35%) in 920mL of deionized water for 16min, stirring manually twice during the soaking process. Remove and squeeze dry, place in a dryer, and dry at 77℃ for 16min until the moisture content is ≤5%. Cool to room temperature, then spread evenly on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, adjust the vacuum to 17Pa, set the power to 30W and the treatment time to 7min, and start the equipment for surface activation treatment. After the treatment is completed, remove the fiber to obtain plasma-treated hollow nylon. Step s6: Add 5.5g of chitosan and 1100mL of deionized water to a beaker, add 11mL of glacial acetic acid dropwise while stirring, adjust the pH to 4.7, place the beaker in a constant temperature water bath, heat to 40℃, then immerse 55g of plasma-treated hollow nylon in the beaker for 31min, stirring once every 10min during this period, then put it into a rolling mill for rolling at a pressure of 0.1MPa, with the rolling rate controlled at 67%, then immerse it in 700mL of sodium bicarbonate solution (sodium bicarbonate solution mass fraction of 0.5%) for 6min, rinse with deionized water until pH is 7, remove and squeeze dry, then spread it flat on a dryer tray, dry at 87℃ for 16min, cool to room temperature, and obtain composite modified hollow nylon; Step s7: Weigh out 44 parts of composite modified bamboo fiber, 27 parts of composite modified hollow nylon, 16.5 parts of modal fiber and 11 parts of spandex according to the weight parts. Step s8: The composite modified bamboo fiber, composite modified hollow nylon, and modal fiber (modal fiber linear density is 1.1 dtex) are respectively put into the opening machine and opened for 11 minutes to remove short fibers and impurities. Spandex (spandex is 40D continuous filament) does not need to be opened and is directly fed as core yarn. The opened short fibers are then fed into the carding machine and carded into a cotton web. The cotton web is then put into the drawing frame and drawn three times at a drawing speed of 20 m / min. The roving is then processed on the roving frame with a twist of 300 twists / m to obtain roving. The roving is then put into the spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core yarn feeding speed of 15 m / min. The spinning adopts a filament core-spun blending process, with spandex as the core and other fibers as the sheath, to obtain blended yarn (linear density 30S). Step s9: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain a knitted greige fabric. Then, the knitted greige fabric is placed in a pre-shrinking machine and treated for 9 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 65%. Then, it is placed in a setting machine and treated for 4.5 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0030] Example 3: This embodiment describes a method for preparing an antibacterial and breathable yoga wear fabric, including the following steps: Step s1: Immerse 140g of bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex in linear density) in 700mL of deionized water, add 7mL of anhydrous ethanol, and stir for 35min at 30℃ and 500r / min. Then transfer it to a vacuum drying oven and dry it for 3h at 85℃ and 0.08MPa vacuum to make the moisture content ≤5%. Cool it to room temperature, then spread it flat on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, and treat it for 10min at 15Pa vacuum and 40W power. Start the equipment for surface activation treatment. After the treatment is completed, take out the fiber to obtain plasma-treated bamboo fiber. Step s2: Add 3g of ammonium persulfate and 3000mL of deionized water to a beaker and stir magnetically for 12min at a stirring rate of 800r / min. Then adjust the pH to 6.0 with 0.1mol / L sodium hydroxide solution. Immerse 150g of plasma-treated bamboo fiber into the beaker and preheat at 50℃ for 17min. Then add 24g of methacryloyloxyethyltrimethylammonium chloride and react at 65℃ and a stirring rate of 600r / min for 2.7h. After the reaction is complete, rinse 5 times with deionized water at 60℃ for 10min each time to obtain grafted bamboo fiber. Step s3: Add 2.1g of nano zinc oxide (nano zinc oxide with a particle size of 50nm) to 2250mL of deionized water, add 8g of polyethylene glycol (polyethylene glycol product number P3265), put it into an ultrasonic disperser, disperse it for 44min at a frequency of 60kHz and a temperature of 40℃, let it stand for 7min, then immerse 133g of grafted bamboo fiber, stir and adsorb it for 32min at a temperature of 40℃ and a stirring rate of 500r / min, filter it with gauze to obtain bamboo fiber loaded with nano zinc oxide; Step s4: Add 26g of glutaraldehyde (25% by mass) and 1625mL of deionized water to a beaker. Stir the mixture at 30℃ and 300r / min for 12min. Adjust the pH to 4.5 with 0.1mol / L hydrochloric acid. Then, immerse 108g of bamboo fiber loaded with nano zinc oxide into the beaker and stir the mixture at 50℃ and 400r / min for 35min. Remove the beaker and soak it in 1625mL of sodium bicarbonate solution (0.5% by mass) for 12min. Rinse with deionized water to pH 7.5. Place the beaker in a vacuum drying oven and dry it at 105℃ and 0.08MPa for 2h. Cool to room temperature to obtain composite modified bamboo fiber. Step s5: Immerse 52g of hollow nylon (linear density of 1.0dtex and hollowness of 35%) in 1040mL of deionized water for 17min, stirring manually twice during the soaking process. Remove and squeeze dry, place in a dryer, and dry at 80℃ for 17min until the moisture content is ≤5%. Cool to room temperature, then spread evenly on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, adjust the vacuum to 20Pa, set the power to 30W and the treatment time to 8min, and start the equipment for surface activation treatment. After the treatment is completed, remove the fiber to obtain plasma-treated hollow nylon. Step s6: Add 6g of chitosan and 1200mL of deionized water to a beaker, add 12mL of glacial acetic acid dropwise while stirring, adjust the pH to 5.0, place the beaker in a constant temperature water bath, heat to 40℃, then immerse 60g of plasma-treated hollow nylon in the beaker for 32min, stirring once every 10min during this period, then put it into a rolling mill for rolling at a pressure of 0.1MPa and a rolling rate of 70%, then immerse it in 900mL of sodium bicarbonate solution (sodium bicarbonate solution mass fraction of 0.5%) for 7min, rinse with deionized water until the pH is 7.5, take it out and squeeze dry, then spread it flat on a dryer tray and dry it at a temperature of 90℃ for 17min, cool it to room temperature to obtain composite modified hollow nylon; Step s7: Weigh out 48 parts of composite modified bamboo fiber, 30 parts of composite modified hollow nylon, 18 parts of modal fiber and 12 parts of spandex according to the weight parts. Step s8: The composite modified bamboo fiber, composite modified hollow nylon, and modal fiber (modal fiber linear density is 1.1 dtex) are respectively put into the opening machine and opened for 12 minutes to remove short fibers and impurities. Spandex (spandex is 40D continuous filament) does not need to be opened and is directly fed as core yarn. The opened short fibers are then fed into the carding machine and carded into a cotton web. The cotton web is then put into the drawing frame and drawn three times at a drawing speed of 20 m / min. The roving is then processed on the roving frame with a twist of 300 twists / m to obtain roving. The roving is then put into the spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core yarn feeding speed of 15 m / min. The spinning is done using a filament core-spun blending process, with spandex as the core and other fibers as the sheath, to obtain blended yarn (linear density 30S). Step s9: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 10 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 70%. Then, it is placed in a setting machine and treated for 5 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0031] Comparative Example 1: This comparative example illustrates a method for preparing an antibacterial and breathable yoga wear fabric, comprising the following steps: Step s1: Immerse 50g of hollow nylon (linear density of 1.0dtex and hollowness of 35%) in 800mL of deionized water for 15min, stirring manually twice during the soaking process. Remove and squeeze dry, place in a dryer, and dry at 75℃ for 15min until the moisture content is ≤5%. Cool to room temperature, then spread evenly on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, adjust the vacuum to 15Pa, set the power to 30W and the treatment time to 6min, and start the equipment for surface activation treatment. After the treatment is completed, remove the fiber to obtain plasma-treated hollow nylon. Step s2: Add 5g of chitosan and 1000mL of deionized water to a beaker, add 10mL of glacial acetic acid dropwise while stirring, adjust the pH to 4.5, place the beaker in a constant temperature water bath, heat to 40℃, then immerse 50g of plasma-treated hollow nylon in the beaker for 30min, stirring once every 10min during this period, then put it into a rolling mill for rolling at a pressure of 0.1MPa, with the rolling rate controlled at 65%, then immerse it in 500mL of sodium bicarbonate solution (sodium bicarbonate solution mass fraction of 0.5%) for 5min, rinse with deionized water until the pH is 6.5, take it out and squeeze dry, then spread it flat on a dryer tray and dry it at a temperature of 85℃ for 15min, cool to room temperature to obtain composite modified hollow nylon; Step s3: Weigh out 40 parts bamboo fiber, 25 parts composite modified hollow nylon, 15 parts modal fiber and 10 parts spandex according to the weight parts. Step s4: Bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex linear density), composite modified hollow nylon, and modal fiber (modal fiber linear density 1.1dtex) are respectively fed into the opening machine and opened for 10 minutes to remove short fibers and impurities. Spandex (40D continuous filament) does not need to be opened and is directly fed as the core yarn. The opened short fibers are then fed into the carding machine in conjunction with the core yarn feeding device. The cotton web is formed and fed into a drawing frame. Three drawing passes are performed at a drawing speed of 20 m / min. The web is then processed on a roving frame to produce a roving with a twist of 300 twists / m. This roving is then fed into a spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core feed speed of 15 m / min. The spinning process employs a core-spun filament blending technique, using spandex as the core and other fibers as the sheath, to produce a blended yarn (linear density 30S). Step s5: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 8 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 60%. Then, it is placed in a setting machine and treated for 4 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0032] Comparative Example 2: This comparative example illustrates a method for preparing an antibacterial and breathable yoga wear fabric, comprising the following steps: Step s1: Immerse 100g of bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex in linear density) in 500mL of deionized water, add 5mL of anhydrous ethanol, and stir for 30min at 25℃ and 500r / min. Then transfer it to a vacuum drying oven and dry it for 2h at 80℃ and 0.08MPa to make the moisture content ≤5%. Cool it to room temperature, then spread it flat on the sample rack of the plasma treatment instrument with a thickness of 1cm. Close the chamber door, introduce argon gas, and treat it for 8min at 15Pa and 40W. Start the equipment for surface activation treatment. After the treatment is completed, take out the fiber to obtain plasma-treated bamboo fiber. Step s2: Add 2g of ammonium persulfate and 2000mL of deionized water to a beaker and stir magnetically for 10min at a stirring rate of 750r / min. Then adjust the pH to 6.0 with 0.1mol / L sodium hydroxide solution. Immerse 100g of plasma-treated bamboo fiber into the beaker and preheat at 50℃ for 15min. Then add 16g of methacryloyloxyethyltrimethylammonium chloride and react at 60℃ and a stirring rate of 550r / min for 2.5h. After the reaction is complete, rinse three times with deionized water at 55℃ for 10min each time to obtain grafted bamboo fiber. Step s3: Add 1.6g of nano zinc oxide (nano zinc oxide with a particle size of 20nm) to 2000mL of deionized water, add 6g of polyethylene glycol (polyethylene glycol product number P3265), put it into an ultrasonic disperser, disperse it for 40min at a frequency of 60kHz and a temperature of 40℃, let it stand for 5min, then immerse 100g of grafted bamboo fiber in it, stir and adsorb it for 30min at a temperature of 35℃ and a stirring rate of 450r / min, filter it with gauze to obtain bamboo fiber loaded with nano zinc oxide; Step s4: Add 24g of glutaraldehyde (25% by mass) and 1500mL of deionized water to a beaker. Stir the mixture at 25℃ and 280r / min for 10min. Adjust the pH to 4.5 with 0.1mol / L hydrochloric acid. Then, immerse 100g of bamboo fiber loaded with nano zinc oxide into the beaker and stir the mixture at 45℃ and 380r / min for 30min. Remove the beaker and soak it in 1500mL of sodium bicarbonate solution (0.5% by mass) for 10min. Rinse with deionized water until the pH reaches 6.5. Place the beaker in a vacuum drying oven and dry it at 100℃ and 0.08MPa for 1.5h. Cool to room temperature to obtain composite modified bamboo fiber. Step s5: Weigh out 40 parts of composite modified bamboo fiber, 25 parts of hollow nylon, 15 parts of modal fiber and 10 parts of spandex according to the weight parts. Step s6: The composite modified bamboo fiber, hollow nylon (linear density 1.0 dtex, hollowness 35%), and modal fiber (linear density 1.1 dtex) are respectively fed into the opening machine and opened for 10 minutes to remove short fibers and impurities. Spandex (40D continuous filament) does not require opening and is directly fed as the core yarn. The opened short fibers, along with the core yarn feeding device, are then transferred to the carding machine and carded into cotton. The cotton web is fed into a drawing frame and drawn three times at a drawing speed of 20 m / min. It is then processed on a roving frame with a twist of 300 twists / m to produce roving. The roving is then fed into a spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core feeding speed of 15 m / min. The spinning process uses a long filament core-spun blended spinning process, with spandex as the core and other fibers as the sheath, to produce blended yarn (linear density 30S). Step s7: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 8 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 60%. Then, it is placed in a setting machine and treated for 4 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0033] Comparative Example 3: This comparative example illustrates a method for preparing an antibacterial and breathable yoga wear fabric, comprising the following steps: Step s1: Weigh out 40 parts bamboo fiber, 25 parts hollow nylon, 15 parts modal fiber and 10 parts spandex according to the weight parts. Step s2: Bamboo fiber (recycled bamboo pulp fiber, 38mm in length, 1.2dtex linear density), hollow nylon (1.0dtex linear density, 35% hollowness), and modal fiber (1.1dtex linear density) are placed into an opening machine and opened for 10 minutes to remove short fibers and impurities. Spandex (40D continuous filament) does not need to be opened and is directly fed as the core yarn. The opened short fibers and core yarn are fed into the feeding device. The yarn is then fed into a carding machine to form a cotton web. The web is then fed into a drawing frame and drawn three times at a speed of 20 m / min. The yarn is then processed on a roving frame to produce a twist of 300 twists / m. The roving is then fed into a spinning frame with a twist of 900 twists / m, a spinning speed of 12 m / min, and a core feed speed of 15 m / min. The spinning process uses a core-spun filament blending technique, with spandex as the core and other fibers as the sheath, to produce a blended yarn (linear density 30S). Step s3: Using a warp knitting machine, blended yarn is used as the warp yarn for knitting. The knitting structure is a mesh structure with a mesh diameter of 0.3mm. The stitch length is set to 14 stitches / inch and the knitting speed is 22r / min to obtain the knitted fabric. Then, the knitted fabric is placed in a pre-shrinking machine and treated for 8 minutes at a temperature of 85℃ and a pressure of 0.25MPa. After that, it is squeezed by a roller mill with the liquid extraction rate controlled at 60%. Then, it is placed in a setting machine and treated for 4 minutes at a temperature of 130℃ and a speed of 18m / min. After cooling, the antibacterial and breathable yoga wear fabric is obtained.

[0034] Performance testing The antibacterial and breathable yoga fabrics of Examples 1-3 and Comparative Examples 1-3 were tested for antibacterial properties according to GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3: Vibration method". The 24-hour inhibition rate against Escherichia coli and Staphylococcus aureus was tested, and the inhibition rate after 30 washes was also tested.

[0035] The air permeability was tested according to GB / T 5453-1997 "Determination of air permeability of textile fabrics". A digital air permeability meter was used to test the air permeability of the fabric under 100Pa pressure, and the average value of 5 measuring points was taken.

[0036] The test results are shown in the table below: Table 1: Test Results (Illustrated)

[0037] Referring to Table 1, based on the comparison between Examples 1-3 and Comparative Examples 1-3, it can be seen that the antibacterial and breathable yoga clothing fabric has the core properties of long-lasting antibacterial and breathable sweat-wicking.

[0038] Based on the comparison between Example 1 and Comparative Example 1, it can be seen that Example 1 uses bamboo fiber modified by plasma activation, cationic grafting, nano-zinc oxide loading, and glutaraldehyde crosslinking. Its core principle is as follows: plasma treatment breaks the cellulose molecular chains of the regenerated bamboo pulp fiber, forming etching pits and generating active groups, providing anchoring points for cationic grafting; methacryloyloxyethyltrimethylammonium chloride grafting introduces cationic groups, promoting uniform loading of nano-zinc oxide through electrostatic adsorption and hydrogen bonding; and glutaraldehyde crosslinking anchors the nano-zinc oxide to the fiber surface. This method not only endows the fiber with photocatalytic antibacterial properties but also optimizes the fiber's pore structure. In contrast, Comparative Example 1 uses unmodified recycled bamboo pulp fiber, which has a strong surface inertness and lacks active sites, making it impossible to achieve effective loading and stable anchoring of nano-zinc oxide. It relies solely on the chitosan antibacterial properties of the composite modified hollow nylon, and the fiber structure is dense and not optimized. Therefore, the antibacterial rate of Escherichia coli and Staphylococcus aureus, the antibacterial retention rate after 30 washes, and the air permeability of Example 1 are all significantly better than those of Comparative Example 1, fully demonstrating that the introduction of composite modified bamboo fiber is the key to improving the antibacterial efficacy of the fabric.

[0039] Based on the comparison between Example 1 and Comparative Example 2, it can be seen that Example 1 uses hollow nylon modified by plasma activation, chitosan loading, and neutralization curing. Its core principle is: argon plasma treatment breaks the surface inertia of the polyamide molecular chains, forming etching pits and generating active groups such as amino and carboxyl groups; after the chitosan is protonated and dissolved by glacial acetic acid, it is uniformly loaded onto the fiber surface through electrostatic adsorption and hydrogen bonding. After neutralization and curing, a stable antibacterial film is formed, which retains the hollow, breathable structure of the hollow nylon while endowing it with natural antibacterial properties. Yes; while Comparative Example 2 uses unmodified hollow nylon, which lacks active groups on its surface, and chitosan cannot achieve effective loading and stable adhesion. It only relies on the nano zinc oxide of the composite modified bamboo fiber for antibacterial properties, and the pores of the hollow structure are not further cleared. Therefore, Example 1 has a more comprehensive antibacterial spectrum. After 30 washes, the antibacterial rate still reaches 94.8% and 95.1%, and the air permeability is also better, significantly better than Comparative Example 2. This proves that the introduction of composite modified hollow nylon can form a synergistic antibacterial effect with composite modified bamboo fiber, while optimizing the fabric's air permeability and structural stability.

[0040] Based on the comparison between Example 1 and Comparative Example 3, it can be seen that Example 1 adopts a dual-modification synergistic scheme of composite modified bamboo fiber and composite modified hollow nylon. Its core principle is: the composite modified bamboo fiber achieves photocatalytic antibacterial properties through nano-zinc oxide, and plasma etching optimizes fiber pores; the composite modified hollow nylon achieves natural antibacterial properties through chitosan, retaining and unblocking the hollow breathable structure. The two work together to form a double antibacterial and double breathable function superposition. At the same time, the active groups on the surface of the modified fiber improve the compatibility with blending with modal fiber and spandex, and enhance the softness and elasticity of the fabric. In contrast, Comparative Example 3 uses unmodified bamboo fiber and hollow nylon, without any functional modification, relying only on the weak natural antibacterial properties of the fiber itself. Moreover, the fiber surface is highly inert and the structure is dense, lacking antibacterial synergy and pore optimization effects. Therefore, Example 1 shows an overwhelming advantage in all core performance aspects.

[0041] 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.

[0042] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in this application, they should all fall within the protection scope of the present invention.

Claims

1. An antibacterial and breathable yoga wear fabric, characterized in that, Includes the following components by weight: The composite modified bamboo fiber consists of 40-48 parts, the composite modified hollow nylon consists of 25-30 parts, the modal fiber consists of 15-18 parts, and the spandex consists of 10-12 parts. The spandex is a 40D continuous filament; the modal fiber has a linear density of 1.1 dtex. The composite modified bamboo fiber is prepared by the following steps: Step a1: Immerse bamboo fiber in deionized water, add anhydrous ethanol, stir, then dry, cool, and then spread it flat on the sample rack of the plasma treatment instrument for surface activation treatment to obtain plasma-treated bamboo fiber. Step a2: Add ammonium persulfate and deionized water to a beaker and stir magnetically. Then adjust the pH, immerse the plasma-treated bamboo fiber in the beaker, preheat it, then add methacryloyloxyethyltrimethylammonium chloride to react, rinse, and obtain grafted bamboo fiber. Step a3: Add nano zinc oxide to deionized water, add polyethylene glycol, ultrasonically disperse, let stand, then immerse grafted bamboo fiber, stir to adsorb, filter, and obtain bamboo fiber loaded with nano zinc oxide. Step a4: Add glutaraldehyde and deionized water to a beaker, stir to react, adjust the pH, then immerse the bamboo fiber loaded with nano zinc oxide into the beaker, stir to react, take it out, soak it in sodium bicarbonate solution, rinse it, then dry it and cool it to obtain composite modified bamboo fiber.

2. The antibacterial and breathable yoga wear fabric according to claim 1, characterized in that, The ratio of bamboo fiber, deionized water, and anhydrous ethanol used in step a1 is 100-140g: 500-700mL: 5-7mL; the bamboo fiber is recycled bamboo pulp fiber with a length of 38mm and a linear density of 1.2dtex.

3. The antibacterial and breathable yoga wear fabric according to claim 1, characterized in that, The ratio of ammonium persulfate, deionized water, plasma-treated bamboo fiber, and methacryloyloxyethyltrimethylammonium chloride used in step a2 is 2-3g: 2000-3000mL: 100-150g: 16-24g.

4. The antibacterial and breathable yoga wear fabric according to claim 1, characterized in that, In step a3, the ratio of nano zinc oxide, deionized water, polyethylene glycol, and grafted bamboo fiber is 1.6-2.1g: 2000-2250mL: 6-8g: 100-133g; the particle size of the nano zinc oxide is 20-50nm.

5. The antibacterial and breathable yoga wear fabric according to claim 1, characterized in that, In step a4, the ratio of glutaraldehyde, deionized water, bamboo fiber loaded with nano zinc oxide, and sodium bicarbonate solution is 24-26g: 1500-1625mL: 100-108g: 1500-1625mL; the mass fraction of glutaraldehyde is 25%; and the mass fraction of sodium bicarbonate solution is 0.5%.

6. The antibacterial and breathable yoga wear fabric according to claim 1, characterized in that, The composite modified hollow nylon is prepared by the following steps: Step b1: Immerse hollow nylon in deionized water, dry, cool, and then lay it flat on the sample holder of the plasma treatment instrument for surface activation treatment to obtain plasma-treated hollow nylon. Step b2: Add chitosan and deionized water to a beaker, add glacial acetic acid to adjust the pH, place the beaker in a constant temperature water bath, heat it up, then immerse the plasma-treated hollow nylon in the beaker, then roll it, then immerse it in sodium bicarbonate solution, rinse it, take it out and squeeze it dry, then dry it and cool it to obtain composite modified hollow nylon.

7. The antibacterial and breathable yoga wear fabric according to claim 6, characterized in that, In step b1, the ratio of hollow nylon to deionized water is 50-52g:800-1040mL; the linear density of the hollow nylon is 1.0dtex, and the hollowness is 35%.

8. The antibacterial and breathable yoga wear fabric according to claim 6, characterized in that, In step b2, the ratio of chitosan, deionized water, glacial acetic acid, plasma-treated hollow nylon, and sodium bicarbonate solution is 5-6g: 1000-1200mL: 10-12mL: 50-60g: 500-900mL; the mass fraction of the sodium bicarbonate solution is 0.5%.

9. A method for preparing an antibacterial and breathable yoga wear fabric, characterized in that, The preparation of the antibacterial and breathable yoga wear fabric as described in any one of claims 1-8 includes the following steps: Step 1: Weigh out 40-48 parts of composite modified bamboo fiber, 25-30 parts of composite modified hollow nylon, 15-18 parts of modal fiber and 10-12 parts of spandex according to the weight proportions. Step 2: Open the composite modified bamboo fiber, composite modified hollow nylon, and modal fiber separately. Spandex is directly fed in as the core yarn. The opened short fibers are then fed into the carding machine to form a cotton web. The cotton web is then drawn in three passes and processed by a roving frame to produce roving. The roving is then fed into a spinning frame to produce blended yarn. Step 3: Use a warp knitting machine to produce knitted fabric. Then, put the knitted fabric into a pre-shrinking machine for treatment, followed by liquid injection through a roller mill, and then into a setting machine for treatment and cooling to obtain antibacterial and breathable yoga wear fabric.

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