High-elasticity wrinkle-resistant linen antibacterial fabric and preparation method thereof

Abstract

The application relates to the technical field of flax fabrics, in particular to a high-elasticity wrinkle-resistant flax antibacterial fabric and a preparation method thereof; the fabric is made by blending 50-60 parts of flax fibers, 20-30 parts of polyester fibers and 10-20 parts of polyacrylonitrile fibers; the flax fibers are modified before blending. The flax fibers of the antibacterial fabric are modified, the tensile property of the flax fibers is improved, the flax fibers are softer, the modified flax fibers can be well combined with the polyester fibers and the polyacrylonitrile fibers, the fabric prepared by blending has good elasticity and can effectively prevent wrinkles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of linen fabrics, in particular to a high-elasticity wrinkle-resistant antibacterial linen fabric and a preparation method thereof. BACKGROUND

[0002] Linen is the earliest natural plant fiber used by mankind, with a history of more than 10,000 years. Linen fabric is very popular among consumers and has a very broad market because of its good moisture absorption and moisture conductivity, and it can absorb more than 20 times its own weight of water. Linen fabric is breathable, cool, crisp and comfortable.

[0003] Although linen fabric has many advantages, it is a plant fiber and has a hard hand feel. Moreover, linen fabric basically has no elasticity, is prone to wrinkles during use, and is prone to deformation due to stretching, resulting in fabric damage. SUMMARY

[0004] To solve the above problems, the present application provides a high-elasticity wrinkle-resistant antibacterial linen fabric and a preparation method thereof.

[0005] The technical solution of the present application is: a high-elasticity wrinkle-resistant antibacterial linen fabric, characterized in that it is made of 50-60 parts of linen fiber, 20-30 parts of polyester fiber, and 10-20 parts of polyacrylonitrile fiber.

[0006] Note: The linen fiber of the above antibacterial fabric has been modified to improve the tensile properties of the linen fiber and make it softer. The modified linen fiber can be well combined with polyester fiber and polyacrylonitrile fiber, so that the fabric prepared by blending has good elasticity and can effectively prevent wrinkles.

[0007] Further, the method of the modification treatment is:

[0008] S1, add mandelic acid to an ethanol solution with a weight of 2-3 times itself, stir for 10-15 min, and obtain a mixed solution;

[0009] S2, soak the linen fiber in the mixed solution, the mass ratio of the linen fiber to the mixed solution is 1:3-5, and the mixed solution is placed at 60-70℃ for one-time incubation, the one-time incubation time is 1-2h, and during the one-time incubation, terephthalic acid is added to the mixed solution every 30-40 min, and the single addition amount of terephthalic acid accounts for 4-6% of the total mass of the linen fiber;

[0010] S3, after the first holding, 2-4% of the total mass of the mixed solution is added to the mixed solution, and then the mixed solution is placed at 100-120 DEG C for secondary holding, the secondary holding time is 2-3h, after the secondary holding, the flax fiber is cleaned and dried to obtain the modified flax fiber.

[0011] Description: The above modification treatment improves the tensile properties of flax fiber by esterification reaction of mandelic acid with hydroxyl groups on the flax fiber, makes the flax fiber more soft, and the terephthalic acid can react with the hydroxyl groups on the flax fiber to improve the combination of the flax fiber and the polyester fiber, so that the blended fabric has good tensile properties.

[0012] Further, the mass concentration of the ethanol solution is 50-75%.

[0013] Description: The above concentration of ethanol solution can ensure that the mandelic acid penetrates into the flax fiber, so as to ensure the effect of the modification treatment.

[0014] Further, the cleaning method is to soak the flax fiber in the flowing state of the detergent, the detergent temperature is 30-40 DEG C, the soaking time is 20-25 min, and after the soaking, the flax fiber is rinsed with clean water for 3-5 times.

[0015] Description: The above cleaning method can effectively remove the impurities attached to the surface of the flax fiber, so as to avoid affecting the subsequent blending effect.

[0016] Further, the mixed solution is placed in a pressure container during the secondary holding, and nitrogen is filled into the pressure container, so that the pressure in the pressure container reaches 0.6-0.8 MPa.

[0017] Description: The filling of nitrogen can increase the pressure of the reaction system, increase the collision frequency and energy between the reactant molecules, promote the esterification reaction, and accelerate the reaction rate.

[0018] On the other hand, the application provides a preparation method of a high-elasticity wrinkle-resistant type flax antibacterial fabric, which is used for preparing the above antibacterial fabric, and comprises the following steps:

[0019] Step one, the modified flax fiber, polyester fiber and polyacrylonitrile fiber are fed into a blending machine according to the proportion, and after blending in the blending machine, a mixed yarn is obtained;

[0020] Step two, after weaving, the mixed yarn is obtained, and then the flax fabric is subjected to bacteriostatic finishing to obtain an antibacterial fabric.

[0021] Description: The flax fabric prepared by the above preparation method has good elasticity, and the bacteriostatic finishing improves the bacteriostatic performance of the flax fabric, so that the flax fabric surface is not easy to breed bacteria, and the durability and persistence of the fabric are improved.

[0022] Further, the method for the bacteriostatic finishing is: heating the bacteriostatic finishing liquid to 30-40 DEG C, then dipping the linen fabric into the bacteriostatic finishing liquid, taking out the linen fabric every 3-5 min during the dipping process for air drying, the single air drying time is 15-20 min, the air speed is 10-12 m / s, until the air drying is completed for 2-4 times to obtain the antibacterial fabric, and the temperature of the bacteriostatic finishing liquid is increased by 5-8 DEG C after each air drying.

[0023] Description: The above-mentioned bacteriostatic finishing method first soaks the linen fabric in the bacteriostatic finishing liquid, then makes the bacteriostatic layer appear on the linen fabric through multiple air drying, so as to reduce the bacterial breeding and reduce the generation of peculiar smell during the use of the fabric.

[0024] Further, the components of the bacteriostatic finishing liquid include: 15-25 parts of sodium dodecyl sulfate, 5-10 parts of disodium hydrogen phosphate, 3-8 parts of silver nitrate, 5-10 parts of sodium salicylate, 2-4 parts of dimethicone and 50-75 parts of deionized water.

[0025] Description: After the linen fabric is finished by using the above-mentioned bacteriostatic finishing liquid, the growth of bacteria, fungi and other microorganisms on the surface of the fabric can be inhibited, the breeding and reproduction of bacteria on the fabric can be reduced, and the cleanliness of the fabric can be maintained.

[0026] The beneficial effects of the present application are:

[0027] (1) The linen fiber of the antibacterial fabric of the present application is subjected to modification treatment, the tensile property of the linen fiber is improved, the linen fiber is softer, and the modified linen fiber can be well combined with the polyester fiber and the polyacrylonitrile fiber, so that the fabric prepared by blending has good elasticity and can effectively prevent wrinkles.

[0028] (2) The modification treatment of the present application is carried out by esterification reaction between the mandelic acid and the hydroxyl group on the linen fiber, the tensile property of the linen fiber is improved, the linen fiber is softer, and the terephthalic acid can react with the hydroxyl group on the linen fiber to improve the combination of the linen fiber and the polyester fiber, so that the fabric after blending has good tensile property.

[0029] (3) The linen fabric prepared by the preparation method of the present application has good elasticity, and the linen fabric after bacteriostatic finishing can effectively inhibit the growth of bacteria, fungi and other microorganisms, reduce the generation of peculiar smell during the use of the fabric, and improve the durability and persistence of the fabric. DETAILED DESCRIPTION

[0030] In order to further illustrate the manner of carrying out the present application and the effects achieved by it, the technical solutions of the present application will be described in detail below with reference to experiments.

[0031] Embodiment 1: A high-elasticity wrinkle-resistant type linen antibacterial fabric is made by blending 55 parts of linen fibers, 25 parts of polyester fibers, and 15 parts of polyacrylonitrile fibers; the linen fibers are subjected to a modification treatment before blending to obtain modified linen fibers;

[0032] The method of the modification treatment is as follows:

[0033] S1, put the mandelic acid into an ethanol solution with 2.5 times the weight of the mandelic acid, stir for 12 min to obtain a mixed solution; the mass concentration of the ethanol solution is 60%;

[0034] S2, soak the linen fibers in the mixed solution, the mass ratio of the linen fibers to the mixed solution is 1:4, and the mixed solution is subjected to a first heat preservation at 65°C for 1.5 h; during the first heat preservation, terephthalic acid is added to the mixed solution every 35 min, and the single addition amount of terephthalic acid accounts for 5% of the total mass of the linen fibers;

[0035] S3, after the first heat preservation, 3% of boric acid is added to the mixed solution based on the total mass of the mixed solution, and then the mixed solution is subjected to a second heat preservation at 110°C for 2.5 h; during the second heat preservation, the mixed solution is placed in a pressure container, and nitrogen gas is filled into the pressure container to make the pressure in the pressure container reach 0.7 MPa; after the second heat preservation, the linen fibers are cleaned and dried to obtain the modified linen fibers; the cleaning method is to soak the linen fibers in a flowing detergent, the temperature of the detergent is 35°C, the soaking time is 22 min, and after the soaking is completed, the linen fibers are rinsed with clean water for 4 times; the detergent composition includes, by mass percentage, 30% of stearic acid, 8% of sodium carbonate, and 15% of alkylphenol polyoxyethylene ether, and the balance is water; the flow rate of the detergent is 0.5 m / s.

[0036] The preparation method of the above-mentioned high-elasticity wrinkle-resistant type linen antibacterial fabric includes the following steps:

[0037] Step one, feed the modified linen fibers, polyester fibers, and polyacrylonitrile fibers into a blending machine according to the proportions, and after blending in the blending machine, obtain a blended yarn;

[0038] Step two, after weaving the blended yarn, obtain a linen fabric, and then perform a bacteriostatic finishing on the linen fabric to obtain an antibacterial fabric;

[0039] The method of the antibacterial finishing is as follows: the antibacterial finishing liquid is heated to 35℃, then the linen fabric is immersed into the antibacterial finishing liquid, the linen fabric is taken out every 4 minutes to dry in the air during the immersion process, the single drying time is 18 minutes, the air speed is 11 m / s, until the antibacterial fabric is obtained after drying for 3 times, and the temperature of the antibacterial finishing liquid is increased by 7℃ after each drying is completed; the components of the antibacterial finishing liquid include, by weight fraction: sodium dodecyl sulfate 20 parts, disodium hydrogen phosphate 8 parts, silver nitrate 5 parts, sodium salicylate 8 parts, polydimethylsiloxane 3 parts, deionized water 60 parts.

[0040] Example 2: The present example is basically the same as example 1, except that the antibacterial fabric is made of 50 parts of linen fiber, 20 parts of polyester fiber, and 10 parts of polyacrylonitrile fiber.

[0041] Example 3: The present example is basically the same as example 1, except that the antibacterial fabric is made of 60 parts of linen fiber, 30 parts of polyester fiber, and 20 parts of polyacrylonitrile fiber.

[0042] Example 4: The present example is basically the same as example 1, except that the linen fiber is soaked into the mixed solution, and the mixed solution is placed at 60℃ for one-time incubation, and the one-time incubation time is 1h.

[0043] Example 5: The present example is basically the same as example 1, except that the linen fiber is soaked into the mixed solution, and the mixed solution is placed at 70℃ for one-time incubation, and the one-time incubation time is 2h.

[0044] Example 6: The present example is basically the same as example 1, except that the single addition amount of terephthalic acid accounts for 4% of the total mass of the linen fiber.

[0045] Example 7: The present example is basically the same as example 1, except that the single addition amount of terephthalic acid accounts for 6% of the total mass of the linen fiber.

[0046] Example 8: The present example is basically the same as example 1, except that the mixed solution is placed at 100℃ for two-time incubation, and the two-time incubation time is 2h.

[0047] Example 9: The present example is basically the same as example 1, except that the mixed solution is placed at 120℃ for two-time incubation, and the two-time incubation time is 3h.

[0048] Example 10: The present example is basically the same as example 1, except that the antibacterial fabric is obtained after drying for 2 times.

[0049] Example 11: The present example is basically the same as example 1, except that the antibacterial fabric is obtained after drying for 4 times.

[0050] Example 12: This example is basically the same as example 1, except that the temperature of the bacteriostatic finishing liquid is increased by 5℃ after each air drying is completed.

[0051] Example 13: This example is basically the same as example 1, except that the temperature of the bacteriostatic finishing liquid is increased by 8℃ after each air drying is completed.

[0052] Example 14: This example is basically the same as example 1, except that the components of the bacteriostatic finishing liquid include, by weight fraction: sodium dodecyl sulfate 15 parts, disodium hydrogen phosphate 5 parts, silver nitrate 3 parts, sodium salicylate 5 parts, polydimethylsiloxane 2 parts, deionized water 50 parts.

[0053] Example 15: This example is basically the same as example 1, except that the components of the bacteriostatic finishing liquid include, by weight fraction: sodium dodecyl sulfate 25 parts, disodium hydrogen phosphate 10 parts, silver nitrate 8 parts, sodium salicylate 10 parts, polydimethylsiloxane 4 parts, deionized water 75 parts.

[0054] Experimental example: In order to explore the influence of the parameters of each example on the performance of the fabric, the method recorded in FZ-T70006-2022 is used to test the fabric of each example, and the tensile elastic recovery rate of each example sample is obtained; the bacteriostatic rate of each example fabric to Escherichia coli is tested by bacteria solution absorption method, and the specific exploration is as follows:

[0055] 1. Explore the influence of fabric components on fabric performance

[0056] Examples 1, 2 and 3 are used as experimental comparisons, and example 1 is used as a reference. The flax fiber is not modified as comparative example 1, and the fabric performance under different fabric components is shown in Table 1 as follows:

[0057] Table 1 Fabric performance under different fabric components

[0058] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 2 79.25 88.65 Example 3 78.69 87.96 Comparative Example 1 68.52 87.48

[0059] From the data in Table 1, compared with examples 1, 2 and 3, the tensile elastic recovery rate of the fabric of example 1 is the best, which indicates that the elastic performance of the fabric obtained by example 1 component is the best, and the bacteriostatic performance is not much different, which indicates that the fabric component has little effect on the bacteriostatic performance of the fabric; compared with comparative example 1, the tensile elastic recovery rate of the fabric of comparative example 1 decreases significantly, which indicates that the modified flax fiber can improve the elasticity of the fabric.

[0060] 2. Explore the influence of one-time heat preservation parameters on fabric performance

[0061] Take examples 1, 4, 5 as experimental comparison, at the same time, take example 1 as reference, the first holding temperature is 80℃, holding time is 1.5h as comparative example 2, the fabric performance under different parameters of the first holding is shown in table 2 as follows:

[0062] Table 2 fabric performance under different parameters of the first holding

[0063] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 4 80.95 88.35 Example 5 79.94 88.54 Comparative Example 2 72.66 87.97

[0064] From the data in table 2, compared with examples 1, 4, 5, the fabric tensile elastic recovery rate of example 1 is the best, which may be because under the first holding parameters of example 1, the reaction of mandelic acid and flax fiber is sufficient, so the selected first holding parameters of example 1 are optimal, compared with comparative example 2, the fabric tensile elastic recovery rate of comparative example 2 decreases, which may be because the holding temperature is too high, resulting in a large amount of ethanol evaporation.

[0065] 3, explore the influence of the addition amount of terephthalic acid on the fabric performance

[0066] Take examples 1, 6, 7 as experimental comparison, at the same time, take example 1 as reference, terephthalic acid is added all at once as comparative example 3, the fabric performance under different addition amounts of terephthalic acid is shown in table 3 as follows:

[0067] Table 3 fabric performance under different addition amounts of terephthalic acid

[0068] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 6 80.25 88.37 Example 7 81.45 89.29 Comparative Example 3 77.68 87.66

[0069] From the data in table 3, compared with examples 1, 6, the fabric tensile elastic recovery rate of example 1 is better, which may be because the reaction of terephthalic acid is sufficient, compared with example 7, the difference between them is not big, so from the cost point of view, the addition amount of terephthalic acid selected by example 1 is optimal; compared with comparative example 3, the fabric tensile elastic recovery rate of comparative example 3 decreases, which may be because terephthalic acid cannot be uniformly dispersed in the mixed solution after being added all at once.

[0070] 4, explore the influence of the second holding parameters on the fabric performance

[0071] Take examples 1, 8, 9 as experimental comparison, at the same time, take example 1 as reference, the second holding temperature is 140℃, time is 2.5h as comparative example 4, the fabric performance under different parameters of the second holding is shown in table 4 as follows:

[0072] Table 4 fabric performance under different parameters of the second holding

[0073] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 8 80.51 88.78 Example 9 80.35 89.02 Comparative Example 4 78.26 88.79

[0074] From the data in Table 2, it can be seen that the stretch elasticity recovery rate of the fabric of Example 1 is the best compared with Examples 8 and 9, which may be because the terephthalic acid can fully react under the secondary heat preservation parameters of Example 1, so that the selected secondary heat preservation parameters of Example 1 are optimal. The stretch elasticity recovery rate of the fabric of Comparative Example 4 decreases compared with Example 1, which may be because the high temperature causes the terephthalic acid to be unable to fully react.

[0075] 5. Explore the effect of air drying times on fabric performance

[0076] Examples 1, 10 and 11 are used as experimental comparisons, and Example 1 is used as a reference. The air drying step is performed only once as Comparative Example 5. The fabric performance under different air drying times is shown in Table 5 as follows:

[0077] Table 5 Fabric performance under different air drying times

[0078] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 10 81.44 87.29 Example 11 81.28 89.26 Comparative Example 5 81.35 85.62

[0079] From the data in Table 3, it can be seen that the stretch elasticity recovery rate of the fabric of Examples 1, 10 and 11 does not change significantly compared with Comparative Example 5 as the air drying times increase, which indicates that the antibacterial finishing has little effect on the stretch elasticity recovery rate of the fabric. The E. coli antibacterial rate of the fabric gradually increases until Example 1 reaches the highest, but the E. coli antibacterial rate does not change significantly as the air drying times continue to increase, so that the air drying times selected by Example 1 are optimal.

[0080] 6. Explore the effect of temperature change of antibacterial finishing liquid on fabric performance

[0081] Examples 1, 12 and 13 are used as experimental comparisons, and Example 1 is used as a reference. The temperature of the antibacterial finishing liquid does not change as Comparative Example 6. The fabric performance under different temperature changes of the antibacterial finishing liquid is shown in Table 6 as follows:

[0082] Table 6 Fabric performance under different temperature changes of the antibacterial finishing liquid

[0083]

[0084]

[0085] From the data in Table 6, it can be seen that the E. coli antibacterial rate of Example 1 is the highest compared with Examples 12 and 13, which may be because gradually increasing the temperature of the antibacterial finishing liquid helps the antibacterial finishing liquid to penetrate into the pores of the fabric, thereby improving the antibacterial finishing effect, so that the temperature change of the antibacterial finishing liquid selected by Example 1 is optimal. The antibacterial effect of the fabric of Comparative Example 6 decreases compared with Example 1, which may be because the antibacterial finishing liquid is unable to fully penetrate into the fabric, thereby affecting the antibacterial finishing effect.

[0086] 7. Explore the influence of the components of the bacteriostatic finishing liquid on the performance of the fabric

[0087] Take examples 1, 14, 15 as experimental comparative examples, and take example 1 as a reference, use the commercially available bacteriostatic finishing liquid as comparative example 7, and the performance of the fabric under different components of the bacteriostatic finishing liquid is shown in Table 7 as follows:

[0088] Table 7 Performance of fabric under different temperature change of bacteriostatic finishing liquid

[0089] Group Stretch elastic recovery rate (%) E. coli bacteriostatic rate (%) Example 1 81.36 89.23 Example 14 81.35 88.14 Example 15 81.29 88.26 Comparative Example 7 81.14 84.34

[0090] From the data in Table 7, it can be seen that compared with examples 1, 14, 15, the E. coli bacteriostatic rate of example 1 is the highest, which may be because the components of the bacteriostatic finishing liquid of example 1 are more uniform, and the bacteriostatic effect is better, so the components of the bacteriostatic finishing liquid selected in example 1 are more optimal; compared with comparative example 7, the bacteriostatic effect of the fabric of comparative example 7 has decreased, which shows that the bacteriostatic finishing liquid of the application has better effect.

Claims

1. A high-elasticity wrinkle-resistant type linen antibacterial fabric, characterized in that, It is made by mixing 50-60 parts of flax fiber, 20-30 parts of polyester fiber and 10-20 parts of polyacrylonitrile fiber; the flax fiber is subjected to modification treatment before mixing to obtain modified flax fiber; the modification treatment method is as follows: S1, put the mandelic acid into an ethanol solution with 2-3 times of its weight, stir for 10-15 min to obtain a mixed solution; S2, soak the flax fiber in the mixed solution, the mass ratio of flax fiber to mixed solution is 1:3-5, and the mixed solution is subjected to one-time heat preservation at 60-70℃, the one-time heat preservation time is 1-2h, and during the one-time heat preservation, terephthalic acid is added to the mixed solution every 30-40 min, the single addition amount of terephthalic acid accounts for 4-6% of the total mass of flax fiber; S3, after one-time heat preservation, 2-4% of boric acid is added to the mixed solution, and then the mixed solution is subjected to two-time heat preservation at 100-120℃, the two-time heat preservation time is 2-3h, and after the two-time heat preservation, the flax fiber is cleaned and dried to obtain the modified flax fiber.

2. The high-elasticity wrinkle-resistant type linen antibacterial fabric according to claim 1, characterized in that, The mass concentration of the ethanol solution is 50-75%.

3. The high-elasticity wrinkle-resistant antibacterial linen fabric according to claim 1, characterized in that, The cleaning method is to soak the flax fiber in flowing state detergent, the detergent temperature is 30-40℃, the soaking time is 20-25 min, and after soaking, the flax fiber is rinsed with clean water for 3-5 times.

4. The high-elasticity wrinkle-resistant antibacterial linen fabric according to claim 1, characterized in that, During the two-time heat preservation, the mixed solution is placed in a pressure container, and nitrogen is filled into the pressure container to make the pressure in the pressure container reach 0.6-0.8MPa.

5. A method for preparing a high-elasticity wrinkle-resistant antibacterial linen fabric according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: Step one, the modified flax fiber, polyester fiber and polyacrylonitrile fiber are fed into a blending machine according to the proportion, and after blending in the blending machine, a mixed yarn is obtained; Step two, after weaving, the mixed yarn is obtained, and then the flax fabric is subjected to antibacterial finishing to obtain an antibacterial fabric.

6. The method for preparing a high-elasticity, wrinkle-resistant, antibacterial linen fabric according to claim 5, characterized in that, The antibacterial finishing method is as follows: heat the antibacterial finishing liquid to 30-40℃, then dip the flax fabric into the antibacterial finishing liquid, take out the flax fabric every 3-5 min during the dipping process for air drying, the single air drying time is 15-20 min, the air speed is 10-12m / s, until the antibacterial fabric is obtained after air drying for 2-4 times, and the temperature of the antibacterial finishing liquid is increased by 5-8℃ after each air drying is completed.

7. The method for preparing a high-elasticity, wrinkle-resistant, antibacterial linen fabric according to claim 6, characterized in that, The components of the antibacterial finishing liquid include, by weight fraction: sodium dodecyl sulfate 15-25 parts, disodium hydrogen phosphate 5-10 parts, silver nitrate 3-8 parts, sodium salicylate 5-10 parts, polydimethylsiloxane 2-4 parts, deionized water 50-75 parts.

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