Antibacterial bamboo fiber textile fabric and preparation method thereof

Abstract

The invention relates to the technical field of textile fabrics, and discloses a bacteriostatic bamboo fiber textile fabric and a preparation method thereof. The antibacterial bamboo fiber textile fabric comprises an inner layer and an outer layer, and the inner layer is formed by spinning inner layer blended yarn; the inner-layer blended yarns are formed by blending antibacterial bamboo fibers and antibacterial cotton fibers; the outer layer is formed by weaving outer layer blended yarns; the outer-layer blended yarns are formed by blending modified polyester fibers and antibacterial bamboo fibers; the textile fabric is prepared after the inner layer and the outer layer are bonded. The fabric has excellent antibacterial performance, hygroscopicity, ultraviolet resistance and durability.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabrics, and in particular to an antibacterial bamboo fiber textile fabric and a preparation method thereof. Background Art

[0002] With the continuous improvement of productivity, people's requirements for clothing, food, housing and transportation are also increasing. As an indispensable part of people's lives, textiles and clothing have evolved from tools for keeping warm and covering the body in the early days to the demand for beauty and fashion. At present, based on the aesthetics of clothing, people pay more and more attention to the functionality of textile fabrics, such as antibacterial properties, comfort, health and environmental protection.

[0003] As a commonly used fiber material in textile fabrics, bamboo fiber has the advantages of moisture absorption and breathability, antibacterial and antibacterial, UV resistance, and green environmental protection. However, fabrics made of bamboo fiber have disadvantages such as relatively short service life, easy deformation, and poor wear resistance. Therefore, it is necessary to blend it with cotton fiber, polyester fiber, nylon fiber and other fibers, and then use the blended spinning to make fabrics. At this time, the fabric not only has the advantages of bamboo fiber, but also has the advantages of other fibers, and has better comprehensive performance. Therefore, researchers need to use the characteristics of multiple fibers to prepare a textile fabric with high antibacterial rate, strong hygroscopicity, durability, and good UV resistance to meet actual needs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an antibacterial bamboo fiber textile fabric and a preparation method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An antibacterial bamboo fiber textile fabric comprises an inner layer and an outer layer, wherein the inner layer is woven from an inner layer blended yarn; the inner layer blended yarn is a blend of antibacterial bamboo fiber and antibacterial cotton fiber; the outer layer is woven from an outer layer blended yarn; the outer layer blended yarn is a blend of modified polyester fiber and antibacterial bamboo fiber;

[0007] The antibacterial bamboo fiber and antibacterial cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are respectively immersed in a 5-10g / L antibacterial agent solution for 8-12 hours, then dried at 50-80°C for 10-20 minutes, rinsed 3 times, and dried to obtain the antibacterial bamboo fiber and the antibacterial cotton fiber;

[0008] The antibacterial agent is prepared by the following steps:

[0009] Step A1, under nitrogen conditions, diethylenetriaminepentaacetic acid, γ-glycidyloxypropyltrimethoxysilane and tetrabutylammonium bromide are mixed and stirred in N,N-dimethylformamide, the temperature is raised to 80-90°C for reaction for 4-6 hours, and distilled under reduced pressure, ethyl acetate is added and stirred for 5 minutes, and then washed with saturated sodium bicarbonate solution, saturated sodium chloride and deionized water respectively, and dried to obtain an intermediate product;

[0010] Step A2, placing the intermediate product in a flask, heating to 40-50°C, stirring continuously and slowly adding 1-chlorobutane, reacting for 8-12 hours, then transferring to a separatory funnel and letting stand for 24 hours, collecting the lower layer product, and rotary evaporating to obtain the organosilicon functional monomer;

[0011] Step A3, under nitrogen conditions, add N,N-dimethylformamide to the organosilicon functional monomer and mix and stir evenly, slowly add 0.05-0.2 mol / L zinc nitrate solution, and adjust the pH to 8-10, heat to 35-45° C., stir and react for 1.5-2.5 hours, and distill under reduced pressure to obtain a modified organosilicon functional monomer;

[0012] Step A4, under nitrogen conditions, slowly add dimethyldimethoxysilane, triethylamine and deionized water to the modified organosilicon functional monomer, and heat to 55-65°C, stir and react for 20-40min, then heat to 90°C at a rate of 10°C / 30min, react for 3.5-4.5h, then cool to 60°C, remove water under reduced pressure, then heat to 110°C, let stand for 10h, and distill under reduced pressure to obtain an antibacterial agent;

[0013] Further, in step A1, the dosage ratio of diethylenetriaminepentaacetic acid, γ-glycidyloxypropyltrimethoxysilane, tetrabutylammonium bromide, N,N-dimethylformamide, ethyl acetate, saturated sodium bicarbonate solution, saturated sodium chloride and deionized water is 0.01-0.02 mol: 0.015-0.035 mol: 0.18-0.35 g: 4-8 mL: 50 mL: 100 mL: 100 mL: 100 mL;

[0014] Further, in step A2, the mass ratio of the intermediate product to 1-chlorobutane is 5:2-4;

[0015] Further, in step A3, the usage ratio of the organosilicon functional monomer, N,N-dimethylformamide and zinc nitrate solution is 5 g: 50 mL: 50 mL;

[0016] Furthermore, in step A4, the mass ratio of the modified organic silicon functional monomer, dimethyldimethoxysilane, triethylamine and deionized water is 4-8:30-45:6-12:6.

[0017] The modified polyester fiber is prepared by the following steps:

[0018] Step B1, 2,2-dihydroxymethylpropionic acid and benzotriazole are evenly dispersed in insulating oil, and the temperature is raised to 140-160° C., stirred for reaction for 6-8 hours, poured into a separatory funnel and allowed to stand for 24 hours, and the lower layer product is collected to obtain a benzotriazole derivative;

[0019] Step B2, ethylene glycol, benzotriazole derivatives and polyethylene glycol (molecular weight of 200) are mixed and stirred evenly, recorded as mixed diols; terephthalic acid and the mixed diols are mixed and stirred evenly, ethylene glycol antimony and triphenyl phosphite are added and stirred evenly, and the temperature is raised to 220-230° C. under nitrogen and stirring conditions, and the reaction is continued for 2-3 hours, and then the temperature is raised to 260-270° C., and the reaction is carried out for 2.5-3.5 hours, and the product is collected, cooled, sliced, and dried to obtain modified polyester chips;

[0020] Step B3, uniformly mixing the modified polyester chips and the antibacterial agent, placing them under vacuum drying at 130-150° C. for 24-48 hours, and then putting them into a screw extruder for extrusion, pelletization, and melt spinning to obtain modified polyester fibers;

[0021] Further, in step B1, the usage ratio of 2,2-dihydroxymethylpropionic acid, benzotriazole and insulating oil is 0.1-0.2 mol: 0.12-0.25 mol: 200 mL;

[0022] Further, in step B2, the ratio of the mixed diol, terephthalic acid, ethylene glycol antimony and triphenyl phosphite is 0.1-0.2 mol: 0.12-0.28 mol: 0.03-0.05 mol: 0.0005-0.0015 mol;

[0023] Further, the molar ratio of ethylene glycol, benzotriazole derivative and polyethylene glycol in the mixed diol in step B2 is 6-8:1-2:0.5-1;

[0024] Furthermore, in step B3, the mass ratio of the modified polyester chips to the antibacterial agent is 100:1-3.

[0025] A method for preparing an antibacterial bamboo fiber textile fabric comprises the following steps:

[0026] Step S1, blending the antibacterial bamboo fiber and the antibacterial cotton fiber in a blending ratio of 6-8:2-4 to obtain an inner layer blended yarn, and then weaving the inner layer blended yarn to obtain an inner layer;

[0027] Step S2, blending the modified polyester fiber and the antibacterial bamboo fiber in a blending ratio of 5-7:3-5 to obtain an outer layer blended yarn, and then weaving the outer layer blended yarn to obtain an outer layer;

[0028] Step S3: bonding the inner layer and the outer layer to obtain the antibacterial bamboo fiber textile fabric.

[0029] Beneficial effects of the present invention:

[0030] The textile fabric in the present invention comprises an inner layer and an outer layer, wherein the inner layer is made by blending and weaving antibacterial bamboo fiber and antibacterial cotton fiber; the outer layer is made by blending and weaving modified polyester fiber and antibacterial bamboo fiber; the textile fabric obtained by bonding the inner layer and the outer layer has excellent antibacterial performance, hygroscopicity, UV resistance and durability.

[0031] In the antibacterial agent, under the action of tetrabutylammonium bromide, diethylenetriaminepentaacetic acid and γ-glycidyloxypropyltrimethoxysilane react to obtain an intermediate product; 1-chlorobutane is then used to react with the intermediate product to obtain an organosilicon functional monomer containing a carboxyl group and a quaternary ammonium salt structure; zinc nitrate is then used to provide metal ions to chelate the metal ions (Zn 2+ ), and the modified organic silicon functional monomer is obtained; finally, the modified organic silicon functional monomer and dimethyldimethoxysilane are used as raw materials to synthesize the antibacterial agent. The present invention uses the antibacterial agent to treat bamboo fiber and polyester fiber, and endows the fiber with excellent antibacterial properties; wherein, the silanol contained in the antibacterial agent can chemically bond with the groups on the fiber surface, firmly fixed on the fiber surface, so that the fiber has a long-lasting antibacterial effect; the quaternary ammonium salt structure introduced in the antibacterial agent and the chelated metal ions can synergistically endow the fiber with excellent antibacterial properties, wherein the chelated zinc ions can not only maintain the antibacterial activity, but also improve the stability of the antibacterial agent, prevent the aggregation of zinc ions in the antibacterial agent, and maintain long-term antibacterial properties.

[0032] In the modified polyester fiber, 2,2-dihydroxymethyl propionic acid and benzotriazole are first reacted to obtain benzotriazole derivatives containing terminal hydroxyl groups; then, a mixed diol obtained by mixing ethylene glycol, benzotriazole derivatives and polyethylene glycol and terephthalic acid are used as raw materials to obtain modified polyester chips; finally, the modified polyester chips are mixed with an antibacterial agent, extruded, pelletized and melt-spun to obtain modified polyester fibers. The modified polyester fiber and antibacterial bamboo fiber are blended to obtain an outer layer of blended yarn, which combines the advantages of polyester fiber and bamboo fiber and has excellent wear resistance, antibacterial properties, and UV resistance, and then is woven to form an outer layer; among them, bamboo fiber itself has good UV resistance and antibacterial properties, and the antibacterial properties are further improved after modification; and the benzotriazole structure introduced in the modified polyester fiber has a certain UV absorption effect, which can significantly improve the UV resistance of polyester fiber, and the introduction of the antibacterial agent is fixed in the polyester through chemical bonding, which has a long-lasting antibacterial effect. In addition, after modification, the hygroscopicity of polyester fiber is improved, which can better absorb and release sweat, reduce the feeling of stuffiness, improve wearing comfort, is not easy to deform, and can maintain the shape and dimensional stability of the fabric, thereby extending its service life. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: The antibacterial agent is prepared by the following steps:

[0035] Step A1, under nitrogen conditions, 0.01 mol of diethylenetriaminepentaacetic acid, 0.015 mol of γ-glycidyloxypropyltrimethoxysilane and 0.18 g of tetrabutylammonium bromide were mixed and stirred in 4 mL of N,N-dimethylformamide, heated to 80°C for 4 h, distilled under reduced pressure, 50 mL of ethyl acetate was added and stirred for 5 min, and then washed with 100 mL of saturated sodium bicarbonate solution, 100 mL of saturated sodium chloride and 100 mL of deionized water, respectively, and dried to obtain an intermediate product;

[0036] Step A2, place 5 g of the intermediate product in a flask, heat it to 40° C., continue stirring and slowly drop 2 g of 1-chlorobutane, react for 8 h, then transfer to a separatory funnel and let stand for 24 h, collect the lower layer product, and rotary evaporate to obtain the organosilicon functional monomer;

[0037] Step A3, under nitrogen conditions, add 50 mL of N,N-dimethylformamide to 5 g of the organosilicon functional monomer and stir evenly, slowly add 50 mL of 0.05 mol / L zinc nitrate solution, and adjust the pH to 8, heat to 35° C., stir and react for 1.5 h, and distill under reduced pressure to obtain a modified organosilicon functional monomer;

[0038] Step A4, under nitrogen conditions, slowly add 30g of dimethyldimethoxysilane, 6g of triethylamine and 6g of deionized water to 4g of modified silicone functional monomer, and heat to 55°C, stir and react for 20min, then heat to 90°C at a rate of 10°C / 30min, react for 3.5h, then cool to 60°C, remove water under reduced pressure, then heat to 110°C, let stand for 10h, and distill under reduced pressure to obtain the antibacterial agent.

[0039] The antibacterial bamboo fiber and antibacterial cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are immersed in a 5g / L antibacterial agent solution for 8 hours, then dried at 50°C for 10 minutes, rinsed 3 times, and dried to obtain the antibacterial bamboo fiber and the antibacterial cotton fiber.

[0040] The modified polyester fiber is prepared by the following steps:

[0041] Step B1, 0.1 mol of 2,2-dihydroxymethylpropionic acid and 0.12 mol of benzotriazole are evenly dispersed in 200 mL of insulating oil, and the temperature is raised to 140° C., stirred and reacted for 6 hours, poured into a separating funnel and allowed to stand for 24 hours, and the lower layer product is collected to obtain a benzotriazole derivative;

[0042] Step B2, ethylene glycol, benzotriazole derivatives and polyethylene glycol (molecular weight of 200) are mixed and stirred evenly, recorded as mixed diol; 0.12 mol of terephthalic acid and 0.1 mol of mixed diol are mixed and stirred evenly, 0.03 mol of ethylene glycol antimony and 0.0005 mol of triphenyl phosphite are added and stirred evenly, and the temperature is raised to 220°C under nitrogen and stirring conditions, and the reaction is continued for 2 hours, and then the temperature is raised to 260°C, and the reaction is carried out for 2.5 hours, the product is collected, cooled, sliced, and dried to obtain modified polyester slices, and the molar ratio of ethylene glycol, benzotriazole derivatives and polyethylene glycol in the mixed diol is 8:1:1;

[0043] Step B3, the modified polyester chips and the antibacterial agent are mixed evenly, placed in a vacuum dryer at 130°C for 24 hours, and then put into a screw extruder for extrusion, pelletization, and melt spinning to obtain modified polyester fibers. The mass ratio of the modified polyester chips and the antibacterial agent is 100:1.

[0044] Example 2: The antibacterial agent is prepared by the following steps:

[0045] Step A1, under nitrogen conditions, 0.015 mol of diethylenetriaminepentaacetic acid, 0.025 mol of γ-glycidyloxypropyltrimethoxysilane and 0.26 g of tetrabutylammonium bromide were mixed and stirred in 6 mL of N,N-dimethylformamide, heated to 85°C for reaction for 5 h, and distilled under reduced pressure, 50 mL of ethyl acetate was added and stirred for 5 min, and then washed with 100 mL of saturated sodium bicarbonate solution, 100 mL of saturated sodium chloride and 100 mL of deionized water, respectively, and dried to obtain an intermediate product;

[0046] Step A2, place 5 g of the intermediate product in a flask, heat it to 45°C, continue stirring and slowly drop 3 g of 1-chlorobutane, react for 10 h, then transfer to a separatory funnel and let stand for 24 h, collect the lower layer product, and rotary evaporate to obtain the organosilicon functional monomer;

[0047] Step A3, under nitrogen conditions, add 50 mL of N,N-dimethylformamide to 5 g of the organosilicon functional monomer and mix and stir evenly, slowly add 50 mL of 0.1 mol / L zinc nitrate solution, and adjust the pH to 9, heat to 40° C. and stir to react for 2 h, and distill under reduced pressure to obtain a modified organosilicon functional monomer;

[0048] Step A4, under nitrogen conditions, slowly add 38g of dimethyldimethoxysilane, 9g of triethylamine and 6g of deionized water to 6g of modified silicone functional monomer, and heat to 60°C, stir and react for 30min, then heat to 90°C at a rate of 10°C / 30min, react for 4h, then cool to 60°C, remove water under reduced pressure, then heat to 110°C, let stand for 10h, and distill under reduced pressure to obtain the antibacterial agent.

[0049] The antibacterial bamboo fiber and antibacterial cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are immersed in a 7.5g / L antibacterial agent solution for 10 hours, respectively, and then dried at 65°C for 15 minutes, rinsed 3 times, and dried to obtain the antibacterial bamboo fiber and the antibacterial cotton fiber.

[0050] The modified polyester fiber is prepared by the following steps:

[0051] Step B1, 0.15 mol of 2,2-dihydroxymethylpropionic acid and 0.18 mol of benzotriazole are evenly dispersed in 200 mL of insulating oil, and the temperature is raised to 150° C., stirred and reacted for 7 hours, poured into a separating funnel and allowed to stand for 24 hours, and the lower layer product is collected to obtain a benzotriazole derivative;

[0052] Step B2, ethylene glycol, benzotriazole derivatives and polyethylene glycol (molecular weight of 200) are mixed and stirred evenly, recorded as mixed diol; 0.19 mol of terephthalic acid and 0.15 mol of mixed diol are mixed and stirred evenly, 0.04 mol of ethylene glycol antimony and 0.001 mol of triphenyl phosphite are added and stirred evenly, and the temperature is raised to 225°C under nitrogen and stirring conditions, and the reaction is continued for 2.5 hours, and then the temperature is raised to 265°C, and the reaction is carried out for 3 hours, the product is collected, cooled, sliced, and dried to obtain modified polyester slices, and the molar ratio of ethylene glycol, benzotriazole derivative and polyethylene glycol in the mixed diol is 7:2:1;

[0053] Step B3, the modified polyester chips and the antibacterial agent are mixed evenly, placed in a vacuum dryer at 140°C for 36 hours, and then put into a screw extruder for extrusion, pelletization, and melt spinning to obtain modified polyester fibers. The mass ratio of the modified polyester chips and the antibacterial agent is 100:2.

[0054] Example 3: The antibacterial agent is prepared by the following steps:

[0055] Step A1, under nitrogen conditions, 0.02 mol of diethylenetriaminepentaacetic acid, 0.035 mol of γ-glycidyloxypropyltrimethoxysilane and 0.35 g of tetrabutylammonium bromide were mixed and stirred in 8 mL of N,N-dimethylformamide, heated to 90°C for 6 h, distilled under reduced pressure, 50 mL of ethyl acetate was added and stirred for 5 min, and then washed with 100 mL of saturated sodium bicarbonate solution, 100 mL of saturated sodium chloride and 100 mL of deionized water, respectively, and dried to obtain an intermediate product;

[0056] Step A2, place 5 g of the intermediate product in a flask, heat it to 50° C., continue stirring and slowly drop 4 g of 1-chlorobutane, react for 12 h, then transfer to a separatory funnel and let stand for 24 h, collect the lower layer product, and rotary evaporate to obtain the organosilicon functional monomer;

[0057] Step A3, under nitrogen conditions, add 50 mL of N,N-dimethylformamide to 5 g of the organosilicon functional monomer and stir evenly, slowly add 50 mL of 0.2 mol / L zinc nitrate solution, and adjust the pH to 10, heat to 45° C. and stir to react for 2.5 h, and distill under reduced pressure to obtain a modified organosilicon functional monomer;

[0058] Step A4, under nitrogen conditions, slowly add 45g of dimethyldimethoxysilane, 12g of triethylamine and 6g of deionized water to 8g of modified silicone functional monomer, and heat to 65°C, stir and react for 40min, then heat to 90°C at a rate of 10°C / 30min, react for 4.5h, then cool to 60°C, remove water under reduced pressure, then heat to 110°C, let stand for 10h, and distill under reduced pressure to obtain the antibacterial agent.

[0059] The antibacterial bamboo fiber and antibacterial cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are immersed in a 10g / L antibacterial agent solution for 12h, respectively, and then dried at 80°C for 20min, rinsed 3 times, and dried to obtain the antibacterial bamboo fiber and the antibacterial cotton fiber.

[0060] The modified polyester fiber is prepared by the following steps:

[0061] Step B1, 0.2 mol of 2,2-dihydroxymethylpropionic acid and 0.25 mol of benzotriazole are evenly dispersed in 200 mL of insulating oil, and the temperature is raised to 160° C., stirred and reacted for 8 h, poured into a separating funnel and allowed to stand for 24 h, and the lower layer product is collected to obtain a benzotriazole derivative;

[0062] Step B2, ethylene glycol, benzotriazole derivatives and polyethylene glycol (molecular weight of 200) are mixed and stirred evenly, recorded as mixed diol; 0.28 mol of terephthalic acid and 0.2 mol of mixed diol are mixed and stirred evenly, 0.05 mol of ethylene glycol antimony and 0.0015 mol of triphenyl phosphite are added and stirred evenly, and the temperature is raised to 230°C under nitrogen and stirring conditions, and the reaction is continued for 3 hours, and then the temperature is raised to 270°C, and the reaction is carried out for 3.5 hours, the product is collected, cooled, sliced, and dried to obtain modified polyester slices, and the molar ratio of ethylene glycol, benzotriazole derivative and polyethylene glycol in the mixed diol is 8:1.5:0.5;

[0063] Step B3, the modified polyester chips and the antibacterial agent are mixed evenly, placed in a vacuum dryer at 150°C for 48 hours, and then put into a screw extruder for extrusion, pelletization, and melt spinning to obtain modified polyester fibers. The mass ratio of the modified polyester chips and the antibacterial agent is 100:3.

[0064] Embodiment 4: A method for preparing an antibacterial bamboo fiber textile fabric comprises the following steps:

[0065] Step S1, blending the antibacterial bamboo fiber prepared in Example 1 and the antibacterial cotton fiber prepared in Example 1 at a blending ratio of 6:4 to obtain an inner layer blended yarn, and then weaving the inner layer blended yarn to obtain an inner layer;

[0066] Step S2, blending the modified polyester fiber prepared in Example 1 and the antibacterial bamboo fiber prepared in Example 1 at a blending ratio of 5:5 to obtain an outer layer blended yarn, and then weaving the outer layer blended yarn to obtain an outer layer;

[0067] Step S3: bonding the inner layer and the outer layer to obtain the antibacterial bamboo fiber textile fabric.

[0068] Embodiment 5: A method for preparing an antibacterial bamboo fiber textile fabric comprises the following steps:

[0069] Step S1, blending the antibacterial bamboo fiber prepared in Example 2 and the antibacterial cotton fiber prepared in Example 2 at a blending ratio of 7:3 to obtain an inner layer blended yarn, and then weaving the inner layer blended yarn to obtain an inner layer;

[0070] Step S2, blending the modified polyester fiber prepared in Example 2 and the antibacterial bamboo fiber prepared in Example 2 at a blending ratio of 6:4 to obtain an outer layer blended yarn, and then weaving the outer layer blended yarn to obtain an outer layer;

[0071] Step S3: bonding the inner layer and the outer layer to obtain the antibacterial bamboo fiber textile fabric.

[0072] Embodiment 6: A method for preparing an antibacterial bamboo fiber textile fabric comprises the following steps:

[0073] Step S1, blending the antibacterial bamboo fiber prepared in Example 3 and the antibacterial cotton fiber prepared in Example 3 at a blending ratio of 8:2 to obtain an inner layer blended yarn, and then weaving the inner layer blended yarn to obtain an inner layer;

[0074] Step S2, blending the modified polyester fiber prepared in Example 3 and the antibacterial bamboo fiber prepared in Example 3 at a blending ratio of 7:3 to obtain an outer layer blended yarn, and then weaving the outer layer blended yarn to obtain an outer layer;

[0075] Step S3: bonding the inner layer and the outer layer to obtain the antibacterial bamboo fiber textile fabric.

[0076] Comparative Example 1: This comparative example is a textile fabric, which is different from Example 6 in that the antibacterial bamboo fiber prepared in Example 3 and the antibacterial cotton fiber prepared in Example 3 are replaced by the modified bamboo fiber and modified cotton fiber prepared in the following steps, and the rest are the same;

[0077] The modified bamboo fiber and modified cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are immersed in a 10g / L quaternary ammonium salt antibacterial agent solution for 12 hours, then dried at 80°C for 20 minutes, rinsed 3 times, and dried to obtain the modified bamboo fiber and modified cotton fiber.

[0078] Comparative Example 2: This comparative example is a textile fabric, which differs from Example 6 in that commercially available antibacterial polyester fiber is used instead of the modified polyester fiber prepared in Example 3, and the rest are the same.

[0079] The textile fabrics prepared in Examples 4-6 and Comparative Examples 1-2 were subjected to performance tests:

[0080] Antibacterial performance test: According to GB / T 20944.3-2008 "Evaluation of antibacterial properties of textiles Part 3 Oscillation method", the antibacterial rate of each textile fabric after washing 50 times was analyzed;

[0081] UV resistance test: Refer to "GB / T 18830-2009 Evaluation of UV resistance of textiles" to test the UV protection factor and UV transmittance of textile fabrics;

[0082] Hygroscopicity test: The textile fabrics obtained in each embodiment and comparative example were cut into samples of 10 cm × 10 cm in size, humidified at 25°C and 63% relative humidity for 20 hours, and the initial mass m0 was measured. Then, they were soaked in deionized water for 5 minutes and taken out, and hung flat and vertically until the time interval between two drops of water falling was greater than 30 seconds, and the mass m was measured again, and the water absorption rate was calculated as m-m0 / m0*100%. The test results are shown in Table 1:

[0083] Table 1: Performance test results

[0084]

[0085] As can be seen from Table 1, the antibacterial property of the textile fabric prepared by the present invention is still very high after 50 times of washing, indicating that it has a long-lasting antibacterial effect; after the UV resistance test, the UV protection factor is high and the UV transmittance is low, indicating that it has excellent UV resistance; after the hygroscopicity test, the water absorption rate is high, indicating that it has good hygroscopicity.

[0086] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the concept of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An antibacterial bamboo fiber textile fabric, characterized in that: It comprises an inner layer and an outer layer, wherein the inner layer is woven from inner layer blended yarn; the inner layer blended yarn is blended from antibacterial bamboo fiber and antibacterial cotton fiber; the outer layer is woven from outer layer blended yarn; the outer layer blended yarn is blended from modified polyester fiber and antibacterial bamboo fiber.

2. The antibacterial bamboo fiber textile fabric according to claim 1, characterized in that: The antibacterial bamboo fiber and antibacterial cotton fiber are prepared by the following steps: the bamboo fiber and the cotton fiber are respectively immersed in a 5-10g / L antibacterial agent solution for 8-12h, then dried at 50-80℃ for 10-20min, rinsed 3 times, and dried to obtain the antibacterial bamboo fiber and the antibacterial cotton fiber.

3. The antibacterial bamboo fiber textile fabric according to claim 1, characterized in that: The antibacterial agent is prepared by the following steps: Step A1, under nitrogen conditions, diethylenetriaminepentaacetic acid, γ-glycidyloxypropyltrimethoxysilane and tetrabutylammonium bromide are mixed and stirred in N,N-dimethylformamide, the temperature is raised to 80-90°C for reaction for 4-6 hours, and distilled under reduced pressure, ethyl acetate is added and stirred for 5 minutes, and then washed with saturated sodium bicarbonate solution, saturated sodium chloride and deionized water respectively, and dried to obtain an intermediate product; Step A2, placing the intermediate product in a flask, heating to 40-50°C, stirring continuously and slowly adding 1-chlorobutane, reacting for 8-12 hours, then transferring to a separatory funnel and letting stand for 24 hours, collecting the lower layer product, and rotary evaporating to obtain the organosilicon functional monomer; Step A3, under nitrogen conditions, add N,N-dimethylformamide to the organosilicon functional monomer and mix and stir evenly, slowly add 0.05-0.2 mol / L zinc nitrate solution, and adjust the pH to 8-10, heat to 35-45° C., stir and react for 1.5-2.5 hours, and distill under reduced pressure to obtain a modified organosilicon functional monomer; Step A4, under nitrogen conditions, slowly add dimethyldimethoxysilane, triethylamine and deionized water to the modified silicone functional monomer, and heat to 55-65 ° C, stir and react for 20-40 minutes, then heat to 90 ° C at a rate of 10 ° C / 30 min, react for 3.5-4.5 hours, then cool to 60 ° C, remove water under reduced pressure, then heat to 110 ° C, let stand for 10 hours, and distill under reduced pressure to obtain an antibacterial agent.

4. The antibacterial bamboo fiber textile fabric according to claim 2, characterized in that: In step A1, the dosage ratio of diethylenetriaminepentaacetic acid, γ-glycidyloxypropyltrimethoxysilane, tetrabutylammonium bromide, N,N-dimethylformamide, ethyl acetate, saturated sodium bicarbonate solution, saturated sodium chloride and deionized water is 0.01-0.02 mol: 0.015-0.035 mol: 0.18-0.35 g: 4-8 mL: 50 mL: 100 mL: 100 mL: 100 mL.

5. The antibacterial bamboo fiber textile fabric according to claim 2, characterized in that: The mass ratio of the intermediate product to 1-chlorobutane in step A2 is 5:2-4.

6. The antibacterial bamboo fiber textile fabric according to claim 2, characterized in that: In step A3, the usage ratio of the organosilicon functional monomer, N,N-dimethylformamide and zinc nitrate solution is 5 g:50 mL:50 mL.

7. The antibacterial bamboo fiber textile fabric according to claim 2, characterized in that: In step A4, the mass ratio of the modified organic silicon functional monomer, dimethyldimethoxysilane, triethylamine and deionized water is 4-8:30-45:6-12:

6.

8. The antibacterial bamboo fiber textile fabric according to claim 1, characterized in that: The modified polyester fiber is prepared by the following steps: Step B1, 2,2-dihydroxymethylpropionic acid and benzotriazole are evenly dispersed in insulating oil, and the temperature is raised to 140-160° C., stirred for reaction for 6-8 hours, poured into a separatory funnel and allowed to stand for 24 hours, and the lower layer product is collected to obtain a benzotriazole derivative, wherein the amount ratio of 2,2-dihydroxymethylpropionic acid, benzotriazole and insulating oil is 0.1-0.2 mol: 0.12-0.25 mol: 200 mL; Step B2, ethylene glycol, benzotriazole derivatives and polyethylene glycol are mixed and stirred evenly, recorded as mixed diol; terephthalic acid and mixed diol are mixed and stirred evenly, ethylene glycol antimony and triphenyl phosphite are added and stirred evenly, and the temperature is raised to 220-230°C under nitrogen and stirring conditions, and the reaction is continued for 2-3 hours, and then the temperature is raised to 260-270°C, and the reaction is carried out for 2.5-3.5 hours, and the product is collected, cooled, sliced, and dried to obtain modified polyester slices, wherein the amount ratio of mixed diol, terephthalic acid, ethylene glycol antimony and triphenyl phosphite is 0.1-0.2 mol: 0.12-0.28 mol: 0.03-0.05 mol: 0.0005-0.0015 mol, and the molar ratio of ethylene glycol, benzotriazole derivative and polyethylene glycol in the mixed diol is 6-8: 1-2: 0.5-1; Step B3, the modified polyester chips and the antibacterial agent are mixed evenly, placed in a vacuum dryer at 130-150°C for 24-48 hours, and then put into a screw extruder for extrusion, pelletization, and melt spinning to obtain modified polyester fibers. The mass ratio of the modified polyester chips and the antibacterial agent is 100:1-3.

9. A method for preparing the antibacterial bamboo fiber textile fabric according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1, blending the antibacterial bamboo fiber and the antibacterial cotton fiber in a blending ratio of 6-8:2-4 to obtain an inner layer blended yarn, and then weaving the inner layer blended yarn to obtain an inner layer; Step S2, blending the modified polyester fiber and the antibacterial bamboo fiber in a blending ratio of 5-7:3-5 to obtain an outer layer blended yarn, and then weaving the outer layer blended yarn to obtain an outer layer; Step S3: bonding the inner layer and the outer layer to obtain the antibacterial bamboo fiber textile fabric.

Images