Antibacterial lasting peculiar smell removing yarn and preparation method thereof

Abstract

The invention relates to the technical field of yarn processing, in particular to antibacterial lasting peculiar smell removing yarn and a preparation method thereof. The antibacterial lasting peculiar smell removing yarn is prepared from the following raw materials in parts by weight: 50 to 60 parts of a high polymer material, 3 to 5 parts of polytetrahydrofuran ether glycol, 5 to 10 parts of chitosan, 5 to 8 parts of cyclodextrin, 10 to 15 parts of pearl powder, 2 to 4 parts of OPHB degerming liquid, 6 to 10 parts of a dispersing agent and 1 to 2 parts of a silane coupling agent. The antibacterial and deodorizing effects are lasting, meanwhile, the water resistance is good, and the good antibacterial and deodorizing effects are still achieved after multiple times of water washing.

Description

Technical Field

[0001] The present application relates to the technical field of yarn processing, and more specifically, to an antibacterial and durable deodorizing yarn and a preparation method thereof. Background Art

[0002] After the fabric comes into contact with sweat, it absorbs and retains the sweat. The salt and lipids in the sweat provide nourishing conditions for bacteria. Bacteria reproduce in sweat and decompose the substances in sweat, producing odor. Usually, when preparing yarn, antibacterial agents are added to make the fabric have antibacterial and odor removal functions. At present, the commonly used antibacterial agents mainly contain silver antibacterial agents, organic antibacterial agents, inorganic antibacterial agents and composite antibacterial agents. The effects of these antibacterial agents are relatively good at the beginning, but as the use time increases and the number of washings increases or decreases, the antibacterial effect will be greatly reduced. Summary of the invention

[0003] In order to solve the problem that the existing fabrics have short antibacterial time and poor antibacterial effect, the present application provides an antibacterial and long-lasting odor-removing yarn and a preparation method thereof.

[0004] In the first aspect, the present application provides an antibacterial and durable deodorizing yarn, which adopts the following technical solution: An antibacterial and long-lasting deodorizing yarn is prepared by including the following raw materials in parts by weight: 50-60 parts of polymer materials 3-5 parts of polytetramethylene glycol Chitosan 5-10 parts Cyclodextrin 5-8 parts 10-15 parts pearl powder OPHB sterilizing solution 2-4 portions Dispersant 6-10 parts 1-2 parts of the first silane coupling agent.

[0005] By adopting the above technical scheme, the antibacterial and long-lasting deodorizing yarn is prepared, which has good antibacterial and deodorizing effect, and the antibacterial effect is long-lasting. At the same time, it has good water resistance and still has good antibacterial and deodorizing effect after multiple washings.

[0006] Among them, OPHB sterilizing liquid is a non-ionic bio-based environmentally friendly organic antibacterial agent with a specific degree of polymerization. By evenly introducing OPHB sterilizing liquid into the yarn structure, the yarn as a whole has good antibacterial ability, and OPHB sterilizing liquid is not easy to develop drug resistance to bacteria, ensuring the durability of the antibacterial effect. Chitosan and cyclodextrin are also added to the yarn as auxiliary antibacterial components. Chitosan is a natural polysaccharide with good biocompatibility and degradability. The amino and hydroxyl groups in its molecular structure can interact with the negative charges on the bacterial cell wall, destroy the integrity of the bacterial cell wall, and thus inhibit the growth of bacteria. Cyclodextrin is a cyclic oligosaccharide with inclusion effect, which can include and fix certain small molecules with antibacterial activity, improve the antibacterial effect and prolong the antibacterial time. In the yarn, chitosan and cyclodextrin work together to further enhance the antibacterial properties of the yarn and make the antibacterial effect more durable. Pearl powder contains a variety of trace elements and mineral components, which can adsorb and decompose odor molecules in the air, thereby achieving the effect of removing odor. At the same time, OPHB sterilizing liquid reduces the odor molecules produced by bacterial growth through its bactericidal ability. The combination of OPHB sterilizing liquid and pearl powder can achieve the effect of rapid odor removal and keep it odor-free for a long time.

[0007] As a matrix material, polymer materials play a role in supporting and enhancing the performance of yarns. Polymer materials have good physical and mechanical properties and chemical stability, and can give yarns good tensile strength, wear resistance and weather resistance. The ether bonds in the molecular chain of polytetramethylene ether diol have good flexibility, which enables the yarn to undergo large deformation and recover quickly when subjected to force, thereby improving the wearing comfort and durability of the yarn. In addition, polytetramethylene ether diol also has certain hygroscopicity and breathability, which helps to keep textiles dry and comfortable. It can be closely combined with antibacterial ingredients such as OPHB sterilizing liquid and chitosan to form a stable antibacterial system. At the same time, the addition of polymer materials, polytetramethylene ether diol, and silane coupling agents further promotes the interaction between antibacterial components and polymer materials, improves the adhesion and stability of antibacterial components on the yarn surface, and ensures the durability of the antibacterial effect.

[0008] The dispersant and the first silane coupling agent play a role in optimizing the dispersion of raw materials and enhancing the interfacial bonding force. The dispersant can reduce the surface tension between the raw material particles, making the raw materials more evenly dispersed during the mixing process and avoiding the occurrence of agglomeration. The silane coupling agent can form a chemical bond between the polymer material and the functional component, enhancing the interfacial bonding force between them, making the overall performance of the yarn more stable and reliable.

[0009] Preferably, the OPHB sterilizing solution is prepared by the following method: A: dissolving polylactic acid in an organic solvent to obtain a polylactic acid solution; B: Dissolve OPHB in an organic solvent, then add the starch mixture and N-hydroxysuccinimide, and stir at 70-80°C until the system becomes transparent and viscous to obtain OPHB viscous material; C: Pass nitrogen into the reaction container, then add 4 / 5-6 / 7 polylactic acid solution and OPHB viscous material, stir to dissolve, heat to 90-95°C for reflux reaction, then add tetramethyldivinyldisiloxane dropwise, control the solution to be added completely within 1 hour, react at a constant temperature for 4-5 hours, then heat to 110-115°C, add the remaining polylactic acid solution to the reaction container again, reflux at a constant temperature until there is no polylactic acid, recover water, cool to room temperature, and obtain OPHB sterilization solution.

[0010] Preferably, the weight parts of the raw materials used to prepare the OPHB sterilizing solution are as follows: Polylactic acid 5-10 parts 15-20 parts of organic solvent OPHB 4-5 parts 4-8 portions of starch mixture 1-2 parts of N-hydroxysuccinimide Tetramethyldivinyldisiloxane 0.5-1 part.

[0011] By adopting the above technical solution, the OPHB sterilizing liquid prepared has good stability, so that the sterilizing liquid can maintain its antibacterial performance without being affected during use.

[0012] The purpose of forming a uniform polylactic acid solution in step A is to ensure good dispersibility and reactivity of polylactic acid in subsequent reactions. Starch has adsorption capacity and can adsorb and fix odor molecules on the surface of the yarn, which is beneficial to accelerate the absorption and decomposition of odor.

[0013] Therefore, in step B, OPHB is combined with starch to form a viscous substance with antibacterial activity, and the viscous substance can be evenly distributed in the yarn fibers to provide a lasting antibacterial and deodorizing effect.

[0014] In step C, the polylactic acid solution is mixed with the OPHB viscous material, and the combination of polylactic acid and OPHB is achieved through steps such as gradual heating, reflux reaction, and dropwise addition of tetramethyldivinyldisiloxane, forming a new type of complex with high antibacterial activity. This complex can continuously release antibacterial factors in the yarn, effectively inhibiting the growth of microorganisms such as bacteria and molds, thereby significantly improving the antibacterial properties of the yarn.

[0015] Preferably, the mass concentration of the starch solution is 15-20 g / 100 ml.

[0016] By adopting the above technical solution, the mass concentration of the starch solution is optimized so that the starch can be fully mixed with OPHB, and the viscosity of the system in the preparation process is moderate, which is conducive to the reaction. Too much starch will increase the viscosity of the system, which is not conducive to the reaction; too little starch will cause less OPHB to be combined, resulting in a decrease in the antibacterial effect.

[0017] Preferably, the pearl powder is modified pearl powder, which is prepared by the following method: 1) heating pearl powder, polyvinyl alcohol and water to 65-70° C. to obtain a pearl powder suspension; 2) adding the second silane coupling agent to the pearl powder suspension, and then reacting at 40-60° C. to obtain a silanized pearl powder suspension; 3) Under nitrogen protection, adding monomer, crosslinking agent and initiator to the silanized pearl powder suspension, heating to 90-100° C., carrying out polymerization reaction, filtering, eluting and drying to obtain modified pearl powder. The monomer is obtained by mixing acrylamide, N-vinyl pyrrolidone and styrene in a weight ratio of (2-3): (4-6): 7.

[0018] Preferably, the weight parts of the raw materials used to prepare the modified pearl powder are as follows: 10-15 parts pearl powder 2-4 parts of polyvinyl alcohol 20-30 parts water 6-8 parts of the second silane coupling agent 8-10 parts of monomer Crosslinking agent 1-1.5 parts Initiator 0.4-0.8 parts.

[0019] By adopting the above technical solution, the modified pearl powder is firmly bonded to the yarn fiber by chemical bonding, and is not easy to fall off or inactivate, thus ensuring the durability of the antibacterial performance. Even after multiple washings and uses, the yarn can still maintain a good antibacterial effect. At the same time, the addition of modified pearl powder improves the softness, skin-friendliness and breathability of the yarn.

[0020] In step 1), the dispersibility of pearl powder can be greatly improved, which is beneficial to the subsequent treatment of pearl powder. In step 2), the introduction of silane coupling agent causes silanization reaction on the surface of pearl powder, which enhances the organophilicity and reactivity of its surface, so that pearl powder can better interact with subsequent polymer monomers, crosslinking agents and other components. In step 3), through polymerization reaction, the monomer is tightly combined with the surface of silanized pearl powder to form a stable polymer layer, which not only enhances the physical and chemical stability of pearl powder, but also makes its antibacterial and deodorizing functions more durable. The antibacterial and deodorizing properties are not easily lost during multiple washing or use.

[0021] Preferably, the molecular weight of the polytetramethylene ether glycol is 500-2000.

[0022] By adopting the above technical solution, the molecular weight of polytetramethylene ether glycol is optimized, the elasticity and softness of the yarn are further improved, and the comfort of yarn use is improved.

[0023] Preferably, the polymer material is obtained by mixing polylactic acid, polyurethane and butylene terephthalate in a weight ratio of (8-10): (3-6): 2.

[0024] By adopting the above technical solution, polylactic acid, polyurethane and butylene terephthalate are used together to improve the antibacterial property of the yarn, while also improving the air permeability, absorbency, strength, wear resistance and fatigue resistance of the yarn. The biodegradability and antibacterial properties of PLA help reduce bacterial growth and odor generation; polyurethane and butylene terephthalate, as polyester materials, have certain hygroscopicity and air permeability, which help reduce the accumulation of moisture and odor generation inside the yarn. At the same time, their stability also ensures that the yarn is not easily deformed or damaged during washing and wearing, thereby extending the durability of the deodorization and antibacterial effects.

[0025] Preferably, the dispersant is prepared by mixing methyl cellulose and gelatin in a weight ratio of (5-8):4.

[0026] By adopting the above technical solution and mixing methyl cellulose and gelatin, the mixing uniformity of polymer materials, chitosan, cyclodextrin, pearl powder and OPHB sterilizing liquid can be greatly improved, so that the yarn has good antibacterial and deodorizing effects.

[0027] In a second aspect, the present application provides a method for preparing an antibacterial and durable deodorizing yarn, using the following technical solution: A method for preparing an antibacterial and durable deodorizing yarn comprises the following preparation steps: Drying: Drying the polymer materials, chitosan, cyclodextrin and pearl powder; Primary spinning: mixing the dried polymer material, polytetramethylene ether glycol, chitosan, cyclodextrin, pearl powder, OPHB sterilizing liquid, dispersant and the first silane coupling agent, and then performing melt spinning to obtain a tow; Post-spinning: The filaments are oiled by the first oil tanker, bundled, drawn and crimped in two stages, and sprayed with oil in the second stage to obtain the primary finished product; Shaping: The finished product is dried at 140-150℃ to obtain the fiber; Spinning: The fibers are spun into antibacterial and long-lasting odor-removing yarns.

[0028] Through the process steps of drying, melt spinning, post-spinning and shaping, the yarn is ensured to have excellent strength, uniformity and dimensional stability.

[0029] In summary, this application has the following beneficial effects: 1. Excellent antibacterial properties: By adding antibacterial ingredients such as chitosan, cyclodextrin, pearl powder, OPHB sterilizing liquid, and combining melt spinning technology to make these ingredients evenly distributed in the yarn, the yarn achieves a lasting antibacterial effect.

[0030] 2. Highly efficient deodorization function: The addition of cyclodextrin and pearl powder enhances the adsorption and inclusion capacity of the yarn, which helps to remove and inhibit the generation of odor. At the same time, the use of dispersants and silane coupling agents also improves the surface properties of the yarn, making it easier to adsorb and remove odor molecules.

[0031] 3. Excellent performance: In this application, polymer materials are used as the basis, combined with polytetramethylene ether glycol, so that the yarn has good softness and aesthetics while maintaining strength. DETAILED DESCRIPTION Example

[0032] Polylactic acid was purchased from Hubei Langbowan Biopharmaceutical Co., Ltd. with a CAS number of 26100-51-6.

[0033] Polyurethane was purchased from Shanghai Oushuo Plastic Co., Ltd. with the brand number 9370AU.

[0034] Polybutylene terephthalate was purchased from Tianjin Lairui Plastic Sales Co., Ltd., brand 176.

[0035] Chitosan was purchased from Shaanxi Chenming Biotechnology Co., Ltd., EINECS No. 618-480-0.

[0036] Cyclodextrin was purchased from Xi'an Musen Bioengineering Co., Ltd., brand α-cyclodextrin.

[0037] Starch was purchased from Hebei Chaoyan New Material Technology Co., Ltd., CAS142706-18-1.

[0038] OPHB sterilization solution was purchased from Nanjing Hesushidai Biotechnology Co., Ltd.

[0039] Example 1 An antibacterial and long-lasting odor-removing yarn is prepared by the following method: Drying: Drying the polymer materials, chitosan, cyclodextrin and pearl powder; Preliminary spinning: 500 g of the dried polymer material, 30 g of polytetramethylene glycol, 50 g of chitosan, 50 g of cyclodextrin, 100 g of pearl powder, 20 g of OPHB sterilization solution, 60 g of dispersant and 10 g of the first silane coupling agent (γ-aminopropyltriethoxysilane) were mixed, and then melt-spinned to obtain a tow; Post-spinning: The filaments are oiled by the first oil tanker, bundled, drawn and crimped in two stages, and sprayed with oil in the second stage to obtain the primary finished product; shaping: The primary finished product is dried and shaped at a temperature of 140°C to obtain the fiber; Spinning: The fibers are spun into antibacterial and long-lasting odor-removing yarns.

[0040] The polymer material is obtained by mixing polylactic acid, polyurethane and polybutylene terephthalate in a weight ratio of 8:3:2. The dispersant is prepared by mixing methyl cellulose and gelatin in a weight ratio of 5:4.

[0041] The difference between Example 2-3 and Example 1 is that the types, amounts and parameters of some raw materials for preparing the antibacterial and durable deodorizing yarn are different. The specific differences are shown in Table 1: Table 1 Types, amounts and parameters of raw materials for preparing antibacterial and durable deodorizing yarns in Examples 1-3 Example 4 An antibacterial and long-lasting odor-removing yarn, the difference between this embodiment and embodiment 1 is that the OPHB sterilizing liquid is prepared by the following method: A: 50 g of polylactic acid was dissolved in 100 g of an organic solvent (N,N-dimethylformamide) to obtain a polylactic acid solution; B: Dissolve 40 g of OPHB in 50 g of an organic solvent (N,N-dimethylformamide), then add 40 g of a starch mixture and 10 g of N-hydroxysuccinimide, and stir at 70°C until the system becomes transparent and viscous to obtain an OPHB viscous substance; C: Pass nitrogen into the reaction container, then add 80g of polylactic acid solution and OPHB viscous material, stir to dissolve, heat to 90℃ for reflux reaction, then add 5g of tetramethyldivinyldisiloxane dropwise, control the solution to be added completely within 1h, react at a constant temperature for 4h, then heat to 110℃, add the remaining polylactic acid solution to the reaction container again, reflux at a constant temperature until there is no polylactic acid, recover water, cool to room temperature, and obtain OPHB sterilization solution.

[0042] The mass concentration of the starch solution is 15g / 100ml.

[0043] OPHB was purchased from PolyScience Company with a molecular weight of 500.

[0044] Example 5 An antibacterial and long-lasting odor-removing yarn, the difference between this embodiment and embodiment 1 is that the OPHB sterilizing liquid is prepared by the following method: A: 100 g of polylactic acid was dissolved in 150 g of an organic solvent (N,N-dimethylformamide) to obtain a polylactic acid solution; B: Dissolve 50 g of OPHB in 50 g of an organic solvent (N,N-dimethylformamide), then add 80 g of a starch mixture and 20 g of N-hydroxysuccinimide, and stir at 80°C until the system becomes transparent and viscous to obtain an OPHB viscous substance; C: Pass nitrogen into the reaction container, then add 68.5 g of lactic acid solution and OPHB viscous material, stir to dissolve, heat to 95°C for reflux reaction, then add 10 g of tetramethyldivinyldisiloxane dropwise, control the solution to be added completely within 1 hour, react at a constant temperature for 5 hours, then heat to 115°C, add the remaining polylactic acid solution to the reaction container again, reflux at a constant temperature until there is no polylactic acid, recover water, cool to room temperature, and obtain OPHB sterilization solution.

[0045] The mass concentration of the starch solution is 20g / 100ml.

[0046] Example 6 An antibacterial and long-lasting deodorizing yarn. The difference between this embodiment and embodiment 1 is that the pearl powder is modified pearl powder, which is prepared by the following method: 1) 100 g of pearl powder, 20 g of polyvinyl alcohol and 200 g of water were heated to 65° C. to obtain a pearl powder suspension; 2) adding 60 g of the second silane coupling agent (γ-aminopropyltriethoxysilane) to the pearl powder suspension, and then reacting at 40° C. to obtain a silanized pearl powder suspension; 3) Under nitrogen protection, 80 g of monomer, 10 g of crosslinking agent (diallyl phthalate) and 4 g of initiator (benzoyl peroxide) were added to the silanized pearl powder suspension, and the temperature was raised to 90° C. to carry out polymerization reaction, and the mixture was filtered, rinsed and dried to obtain modified pearl powder. The monomer was obtained by mixing acrylamide, N-vinyl pyrrolidone and styrene in a weight ratio of 2:4:7.

[0047] The molecular weight of polyvinyl alcohol is 1000.

[0048] Example 7 An antibacterial and long-lasting deodorizing yarn. The difference between this embodiment and embodiment 4 is that the pearl powder is modified pearl powder, which is prepared by the following method: 1) 150 g of pearl powder, 40 g of polyvinyl alcohol and 300 g of water were heated to 70° C. to obtain a pearl powder suspension; 2) adding 80 g of the second silane coupling agent (γ-glycidyloxypropyltrimethoxysilane) to the pearl powder suspension, and then reacting at 60° C. to obtain a silanized pearl powder suspension; 3) Under nitrogen protection, 100 g of monomer, 15 g of crosslinking agent (butyl methacrylate), and 8 g of initiator (azobisisobutyronitrile) were added to the silanized pearl powder suspension, and the temperature was raised to 100° C. to carry out polymerization reaction, and the mixture was filtered, rinsed, and dried to obtain modified pearl powder. The monomer was obtained by mixing acrylamide, N-vinyl pyrrolidone, and styrene in a weight ratio of 3:6:7.

[0049] The molecular weight of polyvinyl alcohol is 1000.

[0050] Example 8 An antibacterial and long-lasting odor-removing yarn. The difference between this embodiment and embodiment 1 is that the polymer material is polylactic acid.

[0051] Example 9 An antibacterial and long-lasting deodorizing yarn. The difference between this embodiment and embodiment 1 is that the polymer material is obtained by mixing polylactic acid and polyurethane in a weight ratio of 8:5.

[0052] Example 10 An antibacterial and long-lasting deodorizing yarn. The difference between this embodiment and embodiment 1 is that the polymer material is obtained by mixing polylactic acid and butylene terephthalate in a weight ratio of 8:5.

[0053] Embodiment 11 An antibacterial and long-lasting odor-removing yarn. The difference between this embodiment and embodiment 1 is that the dispersant is methyl cellulose.

[0054] Example 12 An antibacterial and long-lasting odor-removing yarn. The difference between this embodiment and embodiment 1 is that the dispersant is gelatin.

[0055] Comparative Example Comparative Example 1 An antibacterial and long-lasting deodorizing yarn. The difference between this comparative example and Example 1 is that nanosilver is used instead of OPHB antibacterial liquid.

[0056] Comparative Example 2 An antibacterial and long-lasting deodorizing yarn. The difference between this comparative example and Example 1 is that talcum powder is used instead of chitosan.

[0057] Comparative Example 3 An antibacterial and durable deodorizing yarn. The difference between this comparative example and Example 1 is that starch is used instead of cyclodextrin.

[0058] Comparative Example 4 An antibacterial and durable deodorizing yarn. The difference between this comparative example and Example 1 is that talcum powder is used instead of pearl powder.

[0059] Performance testing The antibacterial and long-lasting deodorizing yarns prepared in Examples 1-12 and Comparative Examples 1-4 were woven into fabrics, and then the antibacterial property and deodorizing rate were tested.

[0060] Test method / test method Antibacterial property: Tested in accordance with the provisions of GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles - Part 3 - Oscillation method", with Escherichia coli ATCC No. 11229 (Gram-negative bacteria) as the test strain.

[0061] Deodorization effect test: Ammonia was selected as the odor to test the deodorization performance of the environmentally friendly antibacterial deodorizing fiber fabric after washing. The sample was cut into a circle with a diameter of 4 cm, 0.1 mL of ammonia water was absorbed on a glass dish, and the glass dish was placed at the bottom of the dryer. The sample was placed on the dryer tray. After absorbing ammonia for 14 hours, 100 mL of distilled water was used to extract at 40°C for 2 hours. The ammonia content in the extract was determined by the HJ534-2009 sodium hypochlorite-salicylic acid spectrophotometry. The deodorization rate of the fabric was obtained by testing the value of ammonia adsorbed by the fabric.

[0062] The antibacterial effect and deodorization rate of Escherichia coli were tested before washing, after washing 100 times and after washing 300 times, and the washing time for each time was 10 minutes. The experimental data are shown in Table 2: Table 2 Experimental data of Examples 1-12 and Comparative Examples 1-4 By comparing Example 1 with Comparative Examples 1-4, the antibacterial tests of Comparative Examples 1-4 before washing are lower than those of Example 1; after 100 and 300 washings, the antibacterial property of Comparative Example 1 is significantly reduced, and the antibacterial change of Comparative Examples 2-4 is greater than that of Example 1; the deodorization rate of Comparative Examples 1-4 before washing is lower than that of Example 1, and Comparative Example 1 is the lowest; after 100 and 300 washings, the deodorization rate of Comparative Example 1 is significantly reduced, and the deodorization change of Comparative Examples 2-4 is greater than that of Example 1. It can be seen that in the present application, by sharing OPHB sterilizing liquid, chitosan, cyclodextrin and pearl powder with other raw materials, the antibacterial property and deodorization rate of the yarn can be greatly improved, and the antibacterial time and deodorization time can be greatly extended.

[0063] By comparing Example 1 with Example 4-5, after 100 and 300 water washings, the change in antibacterial property of Example 4-5 is significantly smaller than that of Example 1; the deodorization rate of Example 4-5 before water washing is higher than that of Example 1; after 100 and 300 water washings, the change in deodorization rate of Example 4-5 is significantly smaller than that of Example 1. It can be seen that the OPHB sterilizing liquid prepared by the present application can effectively prolong the antibacterial time of the yarn, has good antibacterial effect, and at the same time improves the deodorization rate of the yarn.

[0064] Comparing Example 1 with Example 6, after 100 and 300 water washings, the change in antibacterial property of Example 6 is significantly smaller than that of Example 1; the deodorization rate of Example 6 before water washing is higher than that of Example 1; after 100 and 300 water washings, the change in deodorization rate of Example 6 is significantly smaller than that of Example 1; Comparing Example 4 with Example 7, after 100 and 300 washes, the antibacterial property and deodorization rate of Example 7 were substantially unchanged; It can be seen from Examples 1 and 6, 4 and 7 that the modified pearl powder prepared by the present application can effectively improve the antibacterial property and deodorization rate of the yarn, and can greatly prolong the antibacterial time and deodorization time.

[0065] Comparing Example 1 with Example 8-10, the deodorization rate of Example 8-10 before washing is lower than that of Example 1; after washing 100 times and 300 times, the change in the deodorization rate of Example 8-10 is significantly greater than that of Example 1, indicating that the deodorization rate of the yarn can be improved and the deodorization time of the yarn can be extended by mixing polylactic acid, polyurethane and butylene terephthalate.

[0066] Comparing Example 1 with Example 11-12, after 100 and 300 washings, the change in antibacterial property of Example 11-12 was slightly greater than that of Example 1; the deodorization rate of Example 11-12 before washing was lower than that of Example 1; after 100 and 300 washings, the change in deodorization rate of Example 11-12 was significantly greater than that of Example 1, indicating that the use of methyl cellulose and gelatin is beneficial to improving the antibacterial property and deodorization rate of the yarn, and can also prolong the antibacterial time and deodorization time.

[0067] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An antibacterial and long-lasting deodorizing yarn, characterized in that: The preparation is obtained by comprising the following raw materials in parts by weight: 50-60 parts of polymer materials 3-5 parts of polytetramethylene glycol Chitosan 5-10 parts Cyclodextrin 5-8 parts 10-15 parts pearl powder OPHB sterilizing solution 2-4 portions Dispersant 6-10 parts 1-2 parts of the first silane coupling agent.

2. The antibacterial and long-lasting deodorizing yarn according to claim 1, characterized in that: The OPHB sterilization solution is prepared by the following method: A: dissolving polylactic acid in an organic solvent to obtain a polylactic acid solution; B: Dissolve OPHB in an organic solvent, then add the starch mixture and N-hydroxysuccinimide, and stir at 70-80°C until the system becomes transparent and viscous to obtain OPHB viscous material; C: Pass nitrogen into the reaction container, then add 4 / 5-6 / 7 polylactic acid solution and OPHB viscous material, stir to dissolve, heat to 90-95°C for reflux reaction, then add tetramethyldivinyldisiloxane dropwise, control the solution to be added completely within 1 hour, react at a constant temperature for 4-5 hours, then heat to 110-115°C, add the remaining polylactic acid solution to the reaction container again, reflux at a constant temperature until there is no polylactic acid, recover water, cool to room temperature, and obtain OPHB sterilization solution.

3. The antibacterial and long-lasting deodorizing yarn according to claim 2, characterized in that: The weight parts of the raw materials used to prepare the OPHB sterilization solution are as follows: Polylactic acid 5-10 parts 15-20 parts of organic solvent OPHB 4-5 parts 4-8 portions of starch mixture Hydroxysuccinimide 1-2 parts Tetramethyldivinyldisiloxane 0.5-1 part.

4. The antibacterial and long-lasting deodorizing yarn according to claim 3, characterized in that: The mass concentration of the starch solution is 15-20 g / 100 ml.

5. The antibacterial and long-lasting deodorizing yarn according to claim 1, characterized in that: The pearl powder is modified pearl powder, which is prepared by the following method: 1) Heat pearl powder, polyvinyl alcohol and water to 65-70°C to obtain a pearl powder suspension; 2) adding the second silane coupling agent to the pearl powder suspension, and then reacting at 40-60° C. to obtain a silanized pearl powder suspension; 3) Under nitrogen protection, adding monomer, crosslinking agent and initiator to the silanized pearl powder suspension, heating to 90-100°C, carrying out polymerization reaction, filtering, eluting and drying to obtain modified pearl powder. The monomer is obtained by mixing acrylamide, N-vinyl pyrrolidone and styrene in a weight ratio of (2-3): (4-6):

7.

6. The antibacterial and long-lasting deodorizing yarn according to claim 5, characterized in that: The weight parts of the raw materials used to prepare the modified pearl powder are as follows: 10-15 parts pearl powder 2-4 parts of polyvinyl alcohol 20-30 parts water 6-8 parts of the second silane coupling agent 8-10 parts of monomer Crosslinking agent 1-1.5 parts Initiator 0.4-0.8 parts.

7. The antibacterial and durable deodorizing yarn according to claim 1, characterized in that: The molecular weight of the polytetramethylene ether glycol is 500-2000.

8. The antibacterial and durable deodorizing yarn according to claim 1, characterized in that: The polymer material is obtained by mixing polylactic acid, polyurethane and polybutylene terephthalate in a weight ratio of (8-10): (3-6):

2.

9. The antibacterial and durable deodorizing yarn according to claim 1, characterized in that: The dispersant is prepared by mixing methyl cellulose and gelatin in a weight ratio of (5-8):

4.

10. A method for preparing the antibacterial and durable deodorizing yarn according to any one of claims 1 to 9, characterized in that: The method comprises the following preparation steps: Drying: Drying the polymer materials, chitosan, cyclodextrin and pearl powder; Primary spinning: mixing the dried polymer material, polytetramethylene ether glycol, chitosan, cyclodextrin, pearl powder, OPHB sterilizing liquid, dispersant and the first silane coupling agent, and then performing melt spinning to obtain a tow; Post-spinning: The filaments are oiled by the first oil tanker, bundled, drawn and crimped in two stages, and sprayed with oil in the second stage to obtain the primary finished product; Shaping: The finished product is dried at 140-150℃ to obtain the fiber; Spinning: The fibers are spun into antibacterial and long-lasting odor-removing yarns.

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