Moisture absorption and sweat releasing braid and preparation method and application thereof in underwear shoulder straps

Abstract

The invention relates to the technical field of high-performance polyester, and discloses a moisture-absorbing and sweat-releasing braid, a preparation method thereof and application of the moisture-absorbing and sweat-releasing braid in underwear shoulder straps. The preparation method of the moisture-absorbing and sweat-releasing braid comprises the following steps: combining a guanidyl polymer with a modified quaternary ammonium salt compound to obtain a bi-component organic antibacterial agent; grafting a bi-component organic antibacterial agent to the modified composite inorganic antibacterial material to obtain an antibacterial modifier; mixing the polyester master batch and the antibacterial modifier, and carrying out melt spinning to obtain the modified profiled polyester fiber; the modified profiled polyester fibers are spun into modified polyester yarns, the nylon 6 fibers are spun into nylon yarns, and then the moisture absorption and sweat releasing braid is woven. The moisture absorption and sweat releasing braid made of the modified polyester fibers and the nylon fibers not only has the advantages of being good in mechanical property, high in elasticity, resistant to wear and skin-friendly, but also has excellent moisture absorption and sweat releasing performance and lasting antibacterial performance, and when the braid is used in underwear shoulder straps, comfortable, healthy and safe wearing experience can be provided for wearers.

Description

Technical Field

[0001] This invention relates to the field of high-performance polyester technology, specifically to a moisture-wicking webbing, its preparation method, and its application in underwear shoulder straps. Background Technology

[0002] Bras are one of the most basic everyday underwear items for women, serving to support, protect, and enhance the appearance of the breasts. The shoulder straps are a crucial component, and when purchasing bras for everyday wear, comfort and a good fit often depend on the shoulder straps. Besides aesthetics, the material of the shoulder straps is also very important. Polyester fiber (polyester) has advantages such as high strength, good elasticity, quick-drying properties, and abrasion resistance, and also possesses excellent spinnability and mechanical properties, making it suitable for use in bra shoulder straps. However, polyester has poor moisture-wicking properties. In hot summers, if sweat cannot be wicked away quickly, it can breed a large number of bacteria, seriously affecting women's comfort and health. Therefore, solving the problems of poor moisture absorption and antibacterial properties of polyester is of great significance.

[0003] For example, Chinese patent CN116180266B provides a moisture-wicking polyester fiber and its preparation method, which improves the moisture-wicking performance of polyester fibers. Another example is Chinese patent application CN108301066A, which provides an antibacterial polyester fiber, improving its antibacterial properties. However, these patents can only achieve single-function modification of polyester fibers and cannot simultaneously improve both moisture-wicking and antibacterial properties. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a method for preparing a moisture-wicking webbing, comprising the following steps: Step 1: 3-Diamino-2-propanol reacts with 4-vinylbenzoic acid to obtain an intermediate product; the intermediate product reacts with guanidine hydrochloride to obtain a guanidine polymer; N,N-dimethylethylenediamine reacts with 1-bromotetradecane to obtain a quaternary ammonium salt compound; the quaternary ammonium salt compound reacts with 3-mercapto-2-methylpentanal to obtain a modified quaternary ammonium salt compound; the guanidine polymer is combined with the modified quaternary ammonium salt compound to obtain a two-component organic antibacterial agent. Step 2: The composite inorganic antibacterial material is co-modified with polydopamine and silane coupling agent KH-560 to obtain a modified composite inorganic antibacterial material; a two-component organic antibacterial agent is attached to the modified composite inorganic antibacterial material to obtain an antibacterial modifier; Step 3: Mix polyester masterbatch and antibacterial modifier at a mass ratio of 100:(8-15), melt spin to obtain modified profiled polyester fiber; after the modified profiled polyester fiber is spun into modified polyester yarn, it is blended with nylon yarn and woven into moisture-wicking webbing.

[0005] Preferably, in step one, the method for preparing the guanidine polymer specifically includes: mixing 3-diamino-2-propanol, 4-vinylbenzoic acid, p-toluenesulfonic acid, and cyclohexane in a mass ratio of (4.5-9):(7.4-14.8):(0.09-0.15):(15-25) under a nitrogen atmosphere, reacting at 150-160°C for 3.5-4.5 h, purifying to obtain an intermediate product; mixing guanidine hydrochloride with the intermediate product in a molar ratio of (1-1.2):1 under a nitrogen atmosphere, heating to 160-170°C and stirring for 50-70 min, then raising the temperature to 190-200°C and continuing the reaction for 3-5 h, then maintaining under vacuum for 1 h, and cooling to room temperature. A guanidine polymer is obtained; in the above process, p-toluenesulfonic acid is used as a catalyst, and 3-diamino-2-propanol and 4-vinylbenzoic acid are combined through esterification to obtain an intermediate product; guanidine hydrochloride polymerizes with the two amino groups on the intermediate product to obtain the guanidine polymer; preferably, in step one, the preparation method of the modified quaternary ammonium salt compound specifically includes: mixing N,N-dimethylethylenediamine, 1-bromotetradecane, and N,N-dimethylformamide in a mass ratio of (10.6-21.2):(22.7-45.4):(80-120), reacting at 70-80℃ for 8-14 h, purifying to obtain the quaternary ammonium salt compound; the quaternary ammonium salt compound, 3-mercapto-2-methylpentanal, and ethanol are mixed in a specific manner... The mixture is prepared by mixing (3.3-6.6):(1.3-2.6):(50-80) in a mass ratio and reacting at 60-66℃ for 2.5-3.5 h. After purification, a modified quaternary ammonium salt compound is obtained. In the above process, N,N-dimethylethylenediamine and 1-bromotetradecane are combined through a quaternization reaction to obtain the quaternary ammonium salt compound. The amino group of the quaternary ammonium salt compound is combined with the aldehyde group of 3-mercapto-2-methyl-pentanal to form a Schiff base bond and introduce a thiol group. Preferably, in step one, the preparation method of the two-component organic antibacterial agent specifically includes: adding the guanidine polymer to N,N-dimethylformamide, sonicating, heating to 60-70℃, then adding the modified quaternary ammonium salt compound and azobisisobutyronitrile, and stirring. After 3-5 hours of purification, a two-component organic antibacterial agent is obtained; wherein the mass ratio of guanidine polymer, N,N-dimethylformamide, modified quaternary ammonium salt compound, and azobisisobutyronitrile is (8.3-12.1):(150-200):(1.2-2.8):(0.3-0.5); in the above process, the guanidine polymer and modified quaternary ammonium salt compound are combined through a click reaction between carbon-carbon double bonds and thiol groups to obtain a two-component organic antibacterial agent; the guanidine polymer, quaternary ammonium salt compound, and Schiff base bonds all have excellent antibacterial effects, and the guanidine polymer and quaternary ammonium salt compound also have good hydrophilicity; preferably, in step two, the preparation method of the composite inorganic antibacterial material includes the following steps: Step S1: Melamine, urea, ammonium chloride, and tungsten phosphate are mixed in a mass ratio of 6:3:1:(0.1-0.15), ground evenly, and heated to 540-560℃ in air at a heating rate of 5℃ / min, and sintered for 3.5-4.5h to obtain doped modified graphitic carbon nitride. In the above process, tungsten and phosphorus co-doped modified graphitic carbon nitride is synthesized in one step by using a simple thermal polymerization method with phosphotungstic acid as the only precursor of tungsten and phosphorus. The introduction of tungsten and phosphorus into the graphitic carbon nitride increases the pore volume and pore size on the surface of the graphitic carbon nitride nanosheets, improves the specific surface area, and thus provides more active sites. Moreover, tungsten and phosphorus can also reduce the thickness of the graphitic carbon nitride nanosheets. The doping of tungsten and phosphorus enhances its antibacterial activity by improving the physical and chemical interaction between graphitic carbon nitride and bacteria. Step S2: Mix corn stalk powder, ferric citrate, and ultrapure water at a mass ratio of 10:(6.4-7.8):(200-300), sonicate for 20-40 min, then react at 195-205℃ for 11-13 h, filter, wash, and dry to obtain magnetic biochar; In the above process, using corn stalk powder and ferric citrate as raw materials, γ-Fe2O3 is combined with biochar through a hydrothermal method to obtain magnetic biochar; Step S3: Mix magnetic biochar, doped modified graphitic carbon nitride, and 75% ethanol / water solution at a mass ratio of (0.7-1.5):13.5:300, sonicate for 15-25 min, then stir for 25-35 min, filter, grind, and then heat to 490-500℃ at a heating rate of 5℃ / min for 100-140 min to calcify and purify to obtain the composite inorganic antibacterial material. In the above process, magnetic biochar and doped modified graphitic carbon nitride are bonded through hydrogen bonding, loading the magnetic biochar onto the doped modified... Composite inorganic antibacterial materials are obtained by combining magnetic biochar with doped and modified graphitic carbon nitride. The combination of magnetic biochar and doped and modified graphitic carbon nitride increases the specific surface area and generates more active sites, giving the composite inorganic antibacterial material excellent photocatalytic antibacterial properties. Furthermore, the magnetic biochar in the composite inorganic antibacterial material enriches bacteria and microorganisms on the surface of the composite inorganic antibacterial material through its strong adsorption capacity, thereby improving the capture rate of bacteria and microorganisms and enhancing the antibacterial effect. In addition, the formation of Z-shaped heterojunctions between magnetic biochar and doped and modified graphitic carbon nitride further improves the antibacterial performance of the composite inorganic antibacterial material.

[0006] Preferably, in step two, the preparation method of the antibacterial modifier specifically includes: adding the composite inorganic antibacterial material to a Tris buffer solution, then adding dopamine hydrochloride, sonicating, adding silane coupling agent KH-560, adjusting the pH to 8.5, stirring at 600-700 r / min for 5-7 h, purifying, and obtaining the modified composite inorganic antibacterial material; wherein, the composite inorganic antibacterial material, Tris buffer solution, dopamine hydrochloride, and silane... The dosage ratio of coupling agent KH-560 is (3-5) g : (400-500) mL : (0.1-0.2) g : (0.4-0.6) g; the modified composite inorganic antibacterial material is added to N,N-dimethylformamide, sonicated, and then a two-component organic antibacterial agent is added. The mixture is reacted at 75-85℃ for 20-30 h, purified, and the antibacterial modifier is obtained; the mass ratio of the modified composite inorganic antibacterial material, N,N-dimethylformamide, and the two-component organic antibacterial agent is... The ratios are (2.5-4.5): (200-300): (4.7-7.5). In the above process, the composite inorganic antibacterial material is co-modified by polydopamine and silane coupling agent KH-560. Polydopamine structure and epoxy groups are introduced into the composite inorganic antibacterial material, which improves the antibacterial performance of the composite inorganic antibacterial material and makes it superhydrophilic. Then, the two-component organic antibacterial agent is combined with the composite inorganic antibacterial material through the reaction of epoxy groups and amino groups. This makes the antibacterial modifier of the present invention not only exert the synergistic antibacterial effect of organic-inorganic antibacterial agents, but also has excellent hydrophilicity. In addition, the two-component organic antibacterial agent in the antibacterial modifier can combine with polyester through strong cation-π interaction, hydrogen bonding, and π-π stacking interaction. The antibacterial modifier and polyester form strong non-covalent bond interaction, which can make the antibacterial modifier more uniformly dispersed, avoid the migration of the antibacterial modifier, and make the modified shaped polyester fiber have a long-lasting antibacterial effect.

[0007] Preferably, in step three, the melt spinning conditions are: temperature 230-250℃, spinning speed 3000-3500m / min; the melt spinning adopts a spinning method using a shaped spinneret, wherein the shaped spinneret is a hollow spinneret; in the above process, the polyester material has the advantages of high strength, good elastic recovery performance, quick drying, and wear resistance, and also has good spinnability and mechanical properties. The antibacterial modifier is blended with the polyester masterbatch and melt spun to improve the moisture absorption and antibacterial properties of the polyester fiber; furthermore, the polyester fiber is processed into a hollow shaped structure, so that the polyester fiber has good moisture absorption and perspiration wicking properties.

[0008] Preferably, in step three, the modified polyester yarn and nylon yarn have a yarn count of 15-18 Nm; and the moisture-wicking webbing has a weight of 180-200 g / m². 2 .

[0009] In the above process, nylon material has the advantages of high strength, good toughness, wear resistance, high elasticity, good moisture absorption, and skin-friendliness. Modified polyester yarn and nylon yarn are woven into moisture-wicking webbing, so that the webbing not only has the advantages of good mechanical properties, high elasticity, wear resistance, and skin-friendliness, but also has the advantages of long-lasting antibacterial and moisture-wicking properties.

[0010] The moisture-wicking webbing prepared using the aforementioned method is described.

[0011] The application of the moisture-wicking webbing in underwear shoulder straps.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention combines a modified composite inorganic antibacterial material with a two-component organic antibacterial agent to obtain an antibacterial modifier. This modifier is then mixed with polyester masterbatch and melt-spun through a hollow spinneret to obtain modified profiled polyester fibers with excellent moisture absorption and wicking properties and antibacterial properties. Furthermore, the antibacterial modifier and polyester form strong non-covalent bonds through strong cation-π interactions, hydrogen bonds, and π-π stacking interactions, resulting in more uniform dispersion of the antibacterial modifier and preventing its migration. This gives the modified profiled polyester fibers a long-lasting antibacterial effect. 2. This invention uses modified polyester and nylon fibers to create moisture-wicking webbing, giving the webbing excellent mechanical properties, high elasticity, wear resistance, and skin-friendliness. It also possesses superior moisture-wicking and long-lasting antibacterial properties. Therefore, using this moisture-wicking webbing in underwear shoulder straps provides wearers with a comfortable, healthy, and safe wearing experience. Attached Figure Description

[0013] Figure 1 This is a comparison chart of the water absorption rate tests of the moisture-wicking webbing prepared in Examples 2-4 and Comparative Examples 2-5 of the present invention; Figure 2 This is a comparison chart of the wicking height test results of the moisture-wicking webbing prepared in Examples 2-4 and Comparative Examples 2-5 of the present invention; Figure 3 This is a comparison chart of the water droplet diffusion time test results of the moisture-wicking webbing prepared in Examples 2-4 and Comparative Examples 2-5 of the present invention; Figure 4 This is a comparison chart of the Escherichia coli and Staphylococcus aureus inhibition rates (0 washes and 30 washes) of the moisture-wicking webbing prepared in Examples 2-4 and Comparative Examples 2-5 of the present invention. Figure 5 This is a schematic diagram illustrating the synthesis of the intermediate products of this invention; Figure 6 This is a schematic diagram illustrating the synthesis of the guanidine polymer of the present invention; Figure 7This is a schematic diagram illustrating the synthesis of the quaternary ammonium salt compound of the present invention; Figure 8 This is a schematic diagram illustrating the synthesis of the modified quaternary ammonium salt compound of the present invention. Detailed Implementation

[0014] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] Example 1 This embodiment discloses a method for preparing a composite inorganic antibacterial material, the specific steps of which are as follows: Step S1: Melamine, urea, ammonium chloride and tungsten phosphate are mixed in a mass ratio of 6:3:1:0.12, ground evenly, heated to 550°C in air at a heating rate of 5°C / min, and sintered for 4 hours to obtain doped modified graphitic carbon nitride. Step S2: Add 10g of corn stalk powder and 7.1g of ferric ammonium citrate to 250g of ultrapure water, mix, sonicate for 30min, then react at 200℃ for 12h, filter, wash, and dry to obtain magnetic biochar. Step S3: Add 1.1g of magnetic biochar and 13.5g of doped modified graphite phase carbon nitride to 300g of 75% ethanol / water solution, sonicate for 20min, then stir for 30min, filter, dry and grind the resulting powder, then heat to 495℃ at a heating rate of 5℃ / min for calcification for 120min, wash the resulting solid product three times each with anhydrous ethanol and deionized water, and dry to obtain the composite inorganic antibacterial material.

[0016] Example 2 This embodiment discloses a method for preparing a moisture-wicking webbing, the specific steps of which are as follows: Step 1: Under a nitrogen atmosphere, 4.5 g of 3-diamino-2-propanol, 7.4 g of 4-vinylbenzoic acid, 0.09 g of p-toluenesulfonic acid, and 15 g of cyclohexane were mixed and reacted at 150 °C for 4.5 h. Water generated during the reaction was removed using a water separator. After the reaction, the crude product was purified with saturated sodium bicarbonate aqueous solution and deionized water, and then rotary evaporated to obtain the intermediate product. Under a nitrogen atmosphere, guanidine hydrochloride was mixed with the intermediate product at a 1:1 molar ratio, heated to 160 °C and stirred for 70 min, then heated to 190 °C and reacted for another 5 h. The mixture was then kept under vacuum for 1 h and cooled to room temperature to obtain the guanidine polymer. 10.6 g of N,N-dimethylethylenediamine and 22.7 g of 1-bromotetradecane were added to 80 g of... In N,N-dimethylformamide, the mixture was reacted at 70°C for 14 h. The solvent and unreacted 1-bromotetradecane were removed by evaporation to obtain a quaternary ammonium salt compound. 3.3 g of the quaternary ammonium salt compound and 1.3 g of 3-mercapto-2-methyl-pentanal were added to 50 g of ethanol and reacted at 60°C for 3.5 h. After the reaction was completed, the solvent was evaporated to obtain a modified quaternary ammonium salt compound. 8.3 g of guanidinyl polymer was added to 150 g of N,N-dimethylformamide, sonicated for 20 min, heated to 60°C, and then 1.2 g of the modified quaternary ammonium salt compound and 0.3 g of azobisisobutyronitrile were added. The mixture was stirred and reacted for 5 h. After the reaction was completed, the solvent was removed by rotary evaporation to obtain a two-component organic antibacterial agent. Step 2: Add 3g of the composite inorganic antibacterial material to 400mL of 0.01mol / L Tris buffer solution, then add 0.1g of dopamine hydrochloride, sonicate for 20min, then add 0.4g of silane coupling agent KH-560, and adjust the pH of the mixture to 8.5 with 10wt% sodium hydroxide aqueous solution. Stir at 600r / min for 7h. After the reaction is complete, centrifuge, wash, and dry to obtain the modified composite inorganic antibacterial material. Add 2.5g of the modified composite inorganic antibacterial material to 200g of N,N-dimethylformamide, sonicate for 20min, then add 4.7g of two-component organic antibacterial agent, react at 75℃ for 30h. After the reaction is complete, centrifuge, wash, and dry to obtain the antibacterial modifier. Step 3: Mix polyester masterbatch and antibacterial modifier at a mass ratio of 100:8, and melt-spin to obtain modified profiled polyester fibers. The melt spinning adopts a spinning method using a shaped spinneret, which is a hollow spinneret. The melt spinning conditions are: temperature 230℃, spinning speed 3000m / min. The modified profiled polyester fibers are spun into modified polyester yarn with a count of 18Nm (metric count), and nylon 6 fibers are spun into nylon yarn with a count of 18Nm. Using the nylon yarn as the warp and the modified polyester yarn as the weft, a yarn with a weight of 180g / m² is woven. 2 Moisture-wicking webbing.

[0017] Example 3 This embodiment discloses a method for preparing a moisture-wicking webbing, the specific steps of which are as follows: Step 1: Under a nitrogen atmosphere, 9g of 3-diamino-2-propanol, 14.8g of 4-vinylbenzoic acid, 0.15g of p-toluenesulfonic acid, and 25g of cyclohexane were mixed and reacted at 160℃ for 3.5h. Water generated during the reaction was removed using a water separator. After the reaction, the crude product was purified with saturated sodium bicarbonate aqueous solution and deionized water, and then rotary evaporated to obtain the intermediate product. Under a nitrogen atmosphere, guanidine hydrochloride was mixed with the intermediate product at a molar ratio of 1.2:1, heated to 170℃ and stirred for 50min, then heated to 200℃ and reacted for another 3h. The mixture was then kept under vacuum for 1h and cooled to room temperature to obtain the guanidine polymer. 21.2g of N,N-dimethylethylenediamine and 45.4g of 1-bromotetradecane were added to 120g of... In N,N-dimethylformamide, the mixture was reacted at 80°C for 8 hours. The solvent and unreacted 1-bromotetradecane were evaporated to obtain a quaternary ammonium salt compound. 6.6 g of the quaternary ammonium salt compound and 2.6 g of 3-mercapto-2-methyl-pentanal were added to 80 g of ethanol and reacted at 66°C for 2.5 hours. After the reaction was completed, the solvent was evaporated to obtain a modified quaternary ammonium salt compound. 12.1 g of guanidinyl polymer was added to 200 g of N,N-dimethylformamide, sonicated for 40 minutes, heated to 70°C, and then 2.8 g of the modified quaternary ammonium salt compound and 0.5 g of azobisisobutyronitrile were added. The mixture was stirred and reacted for 3 hours. After the reaction was completed, the solvent was removed by rotary evaporation to obtain a two-component organic antibacterial agent. Step 2: Add 5g of the composite inorganic antibacterial material to 500mL of 0.01mol / L Tris buffer solution, then add 0.2g of dopamine hydrochloride, sonicate for 30min, then add 0.6g of silane coupling agent KH-560, and adjust the pH of the mixture to 8.5 with 10wt% sodium hydroxide aqueous solution. Stir at 700r / min for 5h. After the reaction is complete, centrifuge, wash, and dry to obtain the modified composite inorganic antibacterial material. Add 4.5g of the modified composite inorganic antibacterial material to 300g of N,N-dimethylformamide, sonicate for 40min, then add 7.5g of two-component organic antibacterial agent, react at 85℃ for 20h. After the reaction is complete, centrifuge, wash, and dry to obtain the antibacterial modifier. Step 3: Mix polyester masterbatch and antibacterial modifier at a mass ratio of 100:15, and melt-spin to obtain modified profiled polyester fibers. The melt spinning adopts a spinning method using a shaped spinneret, which is a hollow spinneret. The melt spinning conditions are: temperature 250℃, spinning speed 3500m / min. The modified profiled polyester fibers are spun into modified polyester yarn with a count of 15m (metric count), and nylon 6 fibers are spun into nylon yarn with a count of 15Nm. The nylon yarn is used as the warp yarn, and the modified polyester yarn is used as the weft yarn, to weave a yarn with a weight of 200g / m². 2 Moisture-wicking webbing.

[0018] Example 4 This embodiment discloses a method for preparing a moisture-wicking webbing, the specific steps of which are as follows: Step 1: Under a nitrogen atmosphere, 6.8 g of 3-diamino-2-propanol, 11.1 g of 4-vinylbenzoic acid, 0.12 g of p-toluenesulfonic acid, and 20 g of cyclohexane were mixed and reacted at 155 °C for 4 h. Water generated during the reaction was removed using a water separator. After the reaction, the crude product was purified with saturated sodium bicarbonate aqueous solution and deionized water, and then rotary evaporated to obtain the intermediate product. Under a nitrogen atmosphere, guanidine hydrochloride was mixed with the intermediate product at a molar ratio of 1.1:1, heated to 165 °C and stirred for 60 min, then heated to 195 °C and reacted for another 4 h. The mixture was then kept under vacuum for 1 h and cooled to room temperature to obtain the guanidine polymer. 15.9 g of N,N-dimethylethylenediamine and 34.1 g of 1-bromotetradecane were added to 100 g of... In N,N-dimethylformamide, the mixture was reacted at 75°C for 11 h. The solvent and unreacted 1-bromotetradecane were removed by evaporation to obtain a quaternary ammonium salt compound. 5 g of the quaternary ammonium salt compound and 2 g of 3-mercapto-2-methyl-pentanal were added to 65 g of ethanol and reacted at 63°C for 3 h. After the reaction was completed, the solvent was evaporated to obtain a modified quaternary ammonium salt compound. 10.2 g of guanidinyl polymer was added to 175 g of N,N-dimethylformamide, sonicated for 30 min, heated to 65°C, and then 2 g of the modified quaternary ammonium salt compound and 0.4 g of azobisisobutyronitrile were added. The mixture was stirred and reacted for 4 h. After the reaction was completed, the solvent was removed by rotary evaporation to obtain a two-component organic antibacterial agent. Step 2: Add 4g of the composite inorganic antibacterial material to 450mL of 0.01mol / L Tris buffer solution, then add 0.15g of dopamine hydrochloride, sonicate for 25min, then add 0.5g of silane coupling agent KH-560, and adjust the pH of the mixture to 8.5 with 10wt% sodium hydroxide aqueous solution. Stir at 650r / min for 6h. After the reaction is complete, centrifuge, wash, and dry to obtain the modified composite inorganic antibacterial material. Add 3.5g of the modified composite inorganic antibacterial material to 250g of N,N-dimethylformamide, sonicate for 30min, then add 6.1g of two-component organic antibacterial agent, react at 80℃ for 25h. After the reaction is complete, centrifuge, wash, and dry to obtain the antibacterial modifier. Step 3: Mix polyester masterbatch and antibacterial modifier at a mass ratio of 100:11.5, and melt-spin to obtain modified profiled polyester fibers. The melt spinning adopts a spinning method using a shaped spinneret, which is a hollow spinneret. The melt spinning conditions are: temperature 240℃, spinning speed 3250m / min. The modified profiled polyester fibers are spun into modified polyester yarn with a count of 16Nm (metric count), and nylon 6 fibers are spun into nylon yarn with a count of 16Nm. Using the nylon yarn as the warp and the modified polyester yarn as the weft, a yarn with a weight of 190g / m² is woven. 2 Moisture-wicking webbing.

[0019] The composite inorganic antibacterial material used in Examples 2-4 above is the composite inorganic antibacterial material prepared in Example 1.

[0020] Comparative Example 1 This comparative example discloses a method for preparing a composite inorganic antibacterial material, the specific steps of which are as follows: Step S1: Melamine, urea and ammonium chloride are mixed in a mass ratio of 6:3:1, ground evenly, heated to 550°C in air at a heating rate of 5°C / min, and sintered for 4 hours to obtain graphitic carbon nitride. Step S2: Add 10g of corn stalk powder and 7.1g of ferric ammonium citrate to 250g of ultrapure water, mix, sonicate for 30min, then react at 200℃ for 12h, filter, wash, and dry to obtain magnetic biochar. Step S3: Add 1.1g of magnetic biochar and 13.5g of graphitic carbon nitride to 300g of 75% ethanol / water solution, sonicate for 20min, then stir for 30min, filter, dry and grind the resulting powder, then heat to 495℃ at a heating rate of 5℃ / min for calcification for 120min, wash the resulting solid product three times each with anhydrous ethanol and deionized water, and dry to obtain the composite inorganic antibacterial material.

[0021] Comparative Example 2 Compared with Example 4, Comparative Example 2 used the composite inorganic antibacterial material prepared in Comparative Example 1 in the process of preparing the modified composite inorganic antibacterial material, while keeping other conditions unchanged.

[0022] Comparative Example 3 Compared with Example 4, Comparative Example 3 used doped modified graphite phase carbon nitride instead of composite inorganic antibacterial material in the process of preparing modified composite inorganic antibacterial material, while other conditions remained unchanged.

[0023] Comparative Example 4 Compared with Example 4, Comparative Example 4 used a modified quaternary ammonium salt compound instead of a two-component organic antibacterial agent in the preparation of the antibacterial modifier, while other conditions remained unchanged.

[0024] Comparative Example 5 Compared with Example 4, Comparative Example 5 used a guanidine polymer instead of a two-component organic antibacterial agent in the preparation of the antibacterial modifier, while other conditions remained unchanged.

[0025] In the above examples and comparative examples, the polyester masterbatch, with a heat resistance temperature of 200-350℃, was provided by Dongguan Puris Plastic Raw Materials Co., Ltd.; the nylon 6 fiber, a type of nylon 6 staple fiber, brand name Jingying, item number CXJX, specification 1.5D*38mm, came from Ningbo Jinxing Chemical Fiber Co., Ltd.

[0026] Experimental Example The performance of the moisture-wicking webbing prepared in Examples 2-4 and Comparative Examples 2-5 was tested.

[0027] I. Moisture-wicking performance test: The water absorption rate, drip diffusion time, and wicking height of each group of samples were tested according to GB / T21655.1-2023 "Evaluation of the moisture absorption and quick-drying properties of textiles - Part 1: Single combination test method".

[0028] II. Antibacterial performance test: The test standard GB / T20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3: Shaking method" was adopted, and Escherichia coli and Staphylococcus aureus were selected as the test strains.

[0029] The test results are shown in Table 1:

[0030] As shown in Table 1, the moisture-wicking webbing prepared in Examples 2-4 of this invention exhibits excellent moisture-wicking performance and long-lasting antibacterial properties. A comparison between Comparative Example 2 and Example 4 reveals that the doping of tungsten and phosphorus enhances the antibacterial activity by improving the physical and chemical interactions between graphitic carbon nitride and bacteria, thereby giving the webbing better antibacterial properties. A comparison between Comparative Example 3 and Example 4 shows that the combination of magnetic biochar and doped modified graphitic carbon nitride generates more active sites and increases the capture rate of bacteria and microorganisms, enhancing the antibacterial effect. Furthermore, the formation of a Z-shaped heterojunction between the magnetic biochar and the doped modified graphitic carbon nitride further improves the antibacterial performance of the composite inorganic antibacterial material. This improves the antibacterial properties of the webbing. As can be seen from the comparison between Comparative Examples 4-5 and Example 4, the two-component organic antibacterial agent in the antibacterial modifier contains a guanidine polymer structure, a quaternary ammonium salt compound structure, and a Schiff base bond. The three work together to give the webbing excellent antibacterial and moisture-wicking properties. In addition, the two-component organic antibacterial agent in the antibacterial modifier can form strong non-covalent bonds with polyester, which can make the antibacterial modifier more evenly dispersed and avoid the migration of the antibacterial modifier. As a result, the webbing still has excellent antibacterial effect after 30 washes.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a moisture-wicking webbing, characterized in that, Includes the following steps: Step 1: Combine the guanidine polymer with the modified quaternary ammonium salt compound to obtain a two-component organic antibacterial agent; Step 2: The composite inorganic antibacterial material is co-modified with polydopamine and silane coupling agent KH-560 to obtain a modified composite inorganic antibacterial material; a two-component organic antibacterial agent is attached to the modified composite inorganic antibacterial material to obtain an antibacterial modifier; Step 3: Mix polyester masterbatch and antibacterial modifier at a mass ratio of 100:(8-15), melt spin to obtain modified profiled polyester fiber; after the modified profiled polyester fiber is spun into modified polyester yarn, it is blended with nylon yarn and woven into moisture-wicking webbing.

2. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step one, the method for preparing the guanidine polymer specifically includes: mixing 3-diamino-2-propanol, 4-vinylbenzoic acid, p-toluenesulfonic acid, and cyclohexane in a mass ratio of (4.5-9):(7.4-14.8):(0.09-0.15):(15-25) under a nitrogen atmosphere, reacting at 150-160℃ for 3.5-4.5 h, purifying, and obtaining an intermediate product; mixing guanidine hydrochloride with the intermediate product in a molar ratio of (1-1.2):1 under a nitrogen atmosphere, heating to 160-170℃ and stirring for 50-70 min, then raising the temperature to 190-200℃ and continuing the reaction for 3-5 h, then maintaining under vacuum for 1 h, and cooling to room temperature to obtain the guanidine polymer.

3. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step one, the method for preparing the modified quaternary ammonium salt compound specifically includes: mixing N,N-dimethylethylenediamine, 1-bromotetradecane, and N,N-dimethylformamide in a mass ratio of (10.6-21.2):(22.7-45.4):(80-120), reacting at 70-80℃ for 8-14 h, and purifying to obtain the quaternary ammonium salt compound; mixing the quaternary ammonium salt compound, 3-mercapto-2-methylpentanal, and ethanol in a mass ratio of (3.3-6.6):(1.3-2.6):(50-80), reacting at 60-66℃ for 2.5-3.5 h, and purifying to obtain the modified quaternary ammonium salt compound.

4. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step one, the preparation method of the two-component organic antibacterial agent specifically includes: adding guanidine polymer to N,N-dimethylformamide, sonicating, heating to 60-70℃, then adding modified quaternary ammonium salt compound and azobisisobutyronitrile, stirring and reacting for 3-5 hours, purifying, and obtaining the two-component organic antibacterial agent; wherein, the mass ratio of guanidine polymer, N,N-dimethylformamide, modified quaternary ammonium salt compound, and azobisisobutyronitrile is (8.3-12.1):(150-200):(1.2-2.8):(0.3-0.5).

5. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step two, the composite inorganic antibacterial material is prepared by the following steps: Step S1: Melamine, urea, ammonium chloride and tungsten phosphate are mixed in a mass ratio of 6:3:1:(0.1-0.15), ground evenly, and heated to 540-560℃ in air at a heating rate of 5℃ / min, and sintered for 3.5-4.5h to obtain doped modified graphitic carbon nitride. Step S2: Mix corn stalk powder, ferric ammonium citrate, and ultrapure water in a mass ratio of 10:(6.4-7.8):(200-300), sonicate for 20-40 min, then react at 195-205℃ for 11-13 h, filter, wash, and dry to obtain magnetic biochar. Step S3: Mix magnetic biochar, doped modified graphite phase carbon nitride, and 75% ethanol / water solution at a mass ratio of (0.7-1.5):13.5:300, sonicate for 15-25 min, then stir for 25-35 min, filter, grind, then heat to 490-500℃ at a heating rate of 5℃ / min for 100-140 min, purify, and obtain the composite inorganic antibacterial material.

6. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step two, the preparation method of the antibacterial modifier specifically includes: adding the composite inorganic antibacterial material to a Tris buffer solution, then adding dopamine hydrochloride, sonicating, adding silane coupling agent KH-560, adjusting the pH to 8.5, stirring for 5-7 hours at a speed of 600-700 r / min, purifying, and obtaining the modified composite inorganic antibacterial material; wherein, the ratio of the composite inorganic antibacterial material, Tris buffer solution, dopamine hydrochloride, and silane coupling agent KH-560 is (3- 5) g: (400-500) mL: (0.1-0.2) g: (0.4-0.6) g; Add the modified composite inorganic antibacterial material to N,N-dimethylformamide, sonicate, add the two-component organic antibacterial agent, react at 75-85℃ for 20-30 h, purify, and obtain the antibacterial modifier; wherein, the mass ratio of the modified composite inorganic antibacterial material, N,N-dimethylformamide, and the two-component organic antibacterial agent is (2.5-4.5): (200-300): (4.7-7.5).

7. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step three, the melt spinning conditions are: temperature of 230-250℃ and spinning speed of 3000-3500m / min; the melt spinning adopts a spinning method using a shaped spinneret, wherein the shaped spinneret is a hollow spinneret.

8. The method for preparing the moisture-wicking webbing according to claim 1, characterized in that, In step three, the modified polyester yarn and nylon yarn have a yarn count of 15-18 Nm; the moisture-wicking webbing has a weight of 180-200 g / m². 2 .

9. A moisture-wicking webbing prepared by the method described in any one of claims 1-8.

10. The application of the moisture-wicking webbing according to claim 9 in the shoulder strap of underwear.

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