Anti-wrinkle and antibacterial fabric and preparation process thereof

Abstract

The invention relates to an anti-wrinkle and antibacterial fabric and a preparation process thereof, and belongs to the technical field of textile fabric preparation. The preparation method comprises the following steps: by taking polytetramethylene ether glycol and diphenylmethane-4, 4 '-diisocyanate as main raw materials, carrying out continuous reaction to obtain a prepolymer, then adding N, N-dimethylacetamide until the prepolymer is fully dissolved, then adding a chain extender and a chain terminating agent in sequence, and carrying out chain extension reaction to obtain a polymerization stock solution; and sequentially adding a finishing agent, an anti-wrinkle agent and an antibacterial agent, carrying out esterification reaction, carrying out wet spinning to obtain spandex fibers, and weaving the spandex fibers into the fabric. The finishing agent is tartaric acid, citric acid or malic acid; the anti-wrinkle agent is carboxymethyl cellulose; the antibacterial agent is berberine or magnoflorine. According to the scheme provided by the invention, carboxyl in the finishing agent can be subjected to esterification cross-linking reaction with hydroxyl in the polyether chain segment embedded copolymer containing hydroxyl in the polymerization stock solution, hydroxyl in the anti-wrinkle agent and hydroxyl in the antibacterial agent, and the anti-wrinkle and antibacterial properties of the spandex fabric are improved through the synergistic effect.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabric preparation, and relates to an anti-wrinkle and antibacterial fabric and a preparation process thereof. Background Art

[0002] Spandex is an elastic fiber, scientifically known as polyurethane fiber. It is highly elastic and can be stretched 6 to 7 times, but it can quickly return to its original state as the tension disappears. Its molecular structure is a chain-like, soft and extensible polyurethane, which is connected with hard segments to enhance its properties. Elastic fibers are divided into two categories: one is polyester chain; the other is polyether chain. Polyester elastic fibers have strong antioxidant and oil resistance; polyether elastic fibers have good mildew resistance and detergent resistance.

[0003] The existing anti-wrinkle and antibacterial fabrics have poor effects and are complicated to prepare. In addition, although the existing fabrics are relatively comfortable to wear and have a good feel, their anti-wrinkle and antibacterial properties are relatively poor, which will shorten the service life of the fabrics. Based on this situation, providing a method for preparing an anti-wrinkle and antibacterial fabric that has anti-wrinkle and antibacterial properties, good comfort and long service life has become a technical problem that needs to be solved by those skilled in the art.

[0004] Patent CN110396826A discloses a method for preparing an anti-wrinkle and antibacterial fabric; kapok fiber and ramie fiber are immersed in a mixed system containing nano titanium dioxide and nano zinc oxide, dioctyl sodium sulfosuccinate, azodiisopropylimidazoline hydrochloride and hexamethyldisiloxane, and ultrasonic dispersion treatment is performed, so that hexamethyldisiloxane undergoes a grafting reaction with active groups on the surfaces of kapok fiber and ramie fiber under the action of azodiisopropylimidazoline hydrochloride, and the hexamethyldisiloxane grafted to the surfaces of kapok fiber and ramie fiber expands the three-dimensional spatial structure of kapok fiber and ramie fiber, thereby improving the anti-wrinkle performance of the prepared fabric; in addition, nano titanium dioxide and nano zinc oxide are fixed in the interlayer formed by kapok fiber and hexamethyldisiloxane, and apocynum fiber and hexamethyldisiloxane, so that the antibacterial performance of the prepared fabric is greatly improved.

[0005] Patent CN115652473A discloses a method for preparing an antibacterial spandex fiber and its application in antibacterial fabrics. Carboxymethyl cellulose is subjected to an esterification reaction with propylene glycol to obtain mercapto-containing cellulose, which is then subjected to an ultraviolet light click reaction with a trimethylammonium chloride-based styrene intermediate to obtain modified cellulose, which is then subjected to wet spinning with polyurethane to obtain spandex fibers. The modified cellulose molecules are grafted with abundant hydrophilic quaternary ammonium salts, imino groups and hydroxyl groups, and have excellent hydrophilicity and solubility. The hydrophilicity of the spandex fibers obtained by spinning is greatly improved, and the antibacterial quaternary ammonium salt groups grafted with cellulose enhance the antibacterial properties of the spandex fibers. The antibacterial agent is not easily lost, the washability is excellent, and the spandex fibers have long-lasting antibacterial properties. The antibacterial spandex fibers have broad application prospects in the fields of antibacterial fiber fabrics, antibacterial clothing, and medical and sanitary products. Summary of the invention

[0006] The purpose of the present invention is to provide an anti-wrinkle and anti-bacterial fabric and a preparation process thereof, which has the characteristics of high efficiency anti-wrinkle and anti-bacterial.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0009] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing them in a prepolymerization reactor for continuous reaction to obtain a prepolymer;

[0010] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0011] (3) adding a finishing agent to the polymerization stock solution, mixing well, adding a catalyst, and heating to cause an esterification reaction to obtain a spinning solution precursor;

[0012] (4) adding an anti-wrinkle agent and an antibacterial agent to a spinning solution precursor, mixing them evenly, adding a catalyst, and heating them to cause an esterification reaction to obtain a spinning solution;

[0013] (5) wet spinning the spinning solution to obtain spandex fibers;

[0014] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0015] As a preferred technical solution of the present invention, the mass ratio of the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in step (1) is 6-8:2-4.

[0016] As a preferred technical solution of the present invention, the chain extender in step (2) is at least one of 1,4-butanediol, 1,6-hexanediol, trimethylolpropane or ethylenediamine; and the chain terminator is at least one of diethylamine, dipropylamine or cyclohexylamine.

[0017] As a preferred technical solution of the present invention, the finishing agent in step (3) is tartaric acid, citric acid or malic acid.

[0018] As a preferred technical solution of the present invention, the mass ratio of the polymerization stock solution to the finishing agent in step (3) is 1-3:4-6.

[0019] As a preferred technical solution of the present invention, the anti-wrinkle agent in step (4) is carboxymethyl cellulose.

[0020] As a preferred technical solution of the present invention, the antibacterial agent in step (4) is berberine or magnolia alkaloids.

[0021] As a preferred technical solution of the present invention, the mass ratio of the spinning solution precursor to the anti-wrinkle agent and antibacterial agent in step (4) is 2-4:1-3:6-10.

[0022] A wrinkle-resistant and antibacterial fabric prepared by the above-mentioned preparation method.

[0023] Beneficial effects of the present invention:

[0024] (1) The carboxyl groups in the tartaric acid, citric acid or malic acid in the solution provided by the present invention can undergo esterification cross-linking reaction with the hydroxyl groups of the polyether segment mosaic copolymer containing hydroxyl groups in the polymerization stock solution and the hydroxyl groups in the carboxymethyl cellulose, thereby synergistically improving the wrinkle resistance of the spandex fabric.

[0025] (2) The berberine and magnolia alkaloids in the solution provided by the present invention have good antibacterial effects. The carboxyl groups in tartaric acid, citric acid or malic acid in the spandex fiber can undergo esterification reaction with the hydroxyl groups in berberine or magnolia alkaloids, and the antibacterial berberine or magnolia alkaloids are fixed to the spandex fiber through ester bonds, thereby improving the antibacterial properties of the fabric.

[0026] (3) The raw materials in the solution provided in the present invention are easy to obtain and low in price. Compared with the complicated process flow of the existing preparation of anti-wrinkle and antibacterial fabrics, the process flow of the solution provided in the present invention is simpler and can achieve better technical effects. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0028] Example 1

[0029] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0030] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a mass ratio of 6:4 in a prepolymerization reactor for continuous reaction to obtain a prepolymer;

[0031] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in sequence to carry out a chain extension reaction to obtain a polymerization stock solution;

[0032] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 1:4, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution precursor;

[0033] (4) mixing the spinning solution precursor, the anti-wrinkle agent and the anti-bacterial agent in a mass ratio of 2:1:6, adding a catalyst, and heating to cause an esterification reaction to obtain a spinning solution;

[0034] (5) wet spinning the spinning solution to obtain spandex fibers;

[0035] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0036] Example 2

[0037] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0038] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a mass ratio of 7:3 in a prepolymerization reactor for continuous reaction to obtain a prepolymer;

[0039] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in sequence to carry out a chain extension reaction to obtain a polymerization stock solution;

[0040] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 2:5, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution precursor;

[0041] (4) mixing the spinning solution precursor, the anti-wrinkle agent and the anti-bacterial agent in a mass ratio of 3:2:8, adding a catalyst, and heating to cause an esterification reaction to obtain a spinning solution;

[0042] (5) wet spinning the spinning solution to obtain spandex fibers;

[0043] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0044] Example 3

[0045] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0046] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0047] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in sequence to carry out a chain extension reaction to obtain a polymerization stock solution;

[0048] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 3:6, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution precursor;

[0049] (4) mixing the spinning solution precursor, the anti-wrinkle agent and the anti-bacterial agent in a mass ratio of 4:3:10, adding a catalyst, and heating to cause an esterification reaction to obtain a spinning solution;

[0050] (5) wet spinning the spinning solution to obtain spandex fibers;

[0051] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0052] Comparative Example 1

[0053] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0054] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0055] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0056] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 3:6, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution precursor;

[0057] (4) mixing the spinning solution precursor and the antibacterial agent in a mass ratio of 4:10, adding a catalyst, heating, and causing an esterification reaction to occur to obtain a spinning solution;

[0058] (5) wet spinning the spinning solution to obtain spandex fibers;

[0059] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0060] Comparative Example 2

[0061] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0062] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0063] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0064] (3) mixing the spinning solution intermediate and the antibacterial agent in a mass ratio of 4:3:10, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution;

[0065] (4) wet spinning the spinning solution to obtain spandex fibers;

[0066] (5) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0067] Comparative Example 3

[0068] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0069] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0070] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0071] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 3:6, adding a catalyst, heating, and causing an esterification reaction to occur, thereby obtaining a spinning solution precursor;

[0072] (4) mixing the spinning solution precursor and the anti-wrinkle agent in a mass ratio of 4:3, adding a catalyst, heating, and causing an esterification reaction to occur. After the reaction is completed, a spinning solution is obtained;

[0073] (5) wet spinning the spinning solution to obtain spandex fibers;

[0074] (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0075] Comparative Example 4

[0076] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0077] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0078] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0079] (3) mixing the polymer stock solution and the antibacterial agent in a mass ratio of 4:10, adding a catalyst, heating, and causing an esterification reaction to occur to obtain a spinning solution;

[0080] (4) wet spinning the spinning solution to obtain spandex fibers;

[0081] (5) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0082] Comparative Example 5

[0083] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0084] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0085] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0086] (3) mixing the polymerization stock solution and the finishing agent in a mass ratio of 3:6, adding a catalyst, heating, and causing an esterification reaction to occur to obtain a spinning solution;

[0087] (4) wet spinning the spinning solution to obtain spandex fibers;

[0088] (5) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0089] Comparative Example 6

[0090] A preparation process of anti-wrinkle and antibacterial fabrics, comprising the following steps:

[0091] (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in a prepolymerization reactor for continuous reaction at a mass ratio of 8:2 to obtain a prepolymer;

[0092] (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution;

[0093] (3) mixing the polymer stock solution and the anti-wrinkle agent in a mass ratio of 4:3, adding a catalyst, heating, and causing an esterification reaction to occur. After the reaction is completed, a spinning solution is obtained;

[0094] (4) wet spinning the spinning solution to obtain spandex fibers;

[0095] (5) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

[0096] Performance Test:

[0097] The anti-wrinkle and antibacterial properties of the fabrics in Examples 1-3 and Comparative Examples 1-6 were tested according to the national standards GB / T3819-1997 and GB / T20994.2-2007. The test results are shown in Tables 1 and 2-4 below.

[0098] As can be seen from Table 1, the wrinkle recovery angle test results of Examples 1 to 3 are better than those of Comparative Examples 1 to 6. The reason may be that the carboxyl groups in tartaric acid, citric acid or malic acid react with the hydroxyl groups of the polyether segment-embedded copolymer containing hydroxyl groups in the polymerization stock solution and the hydroxyl groups in carboxymethyl cellulose to undergo esterification cross-linking reaction, thereby improving the wrinkle resistance of the fabric.

[0099] It can be seen from Tables 2 to 4 that, compared with Comparative Examples 1 to 6, the test results of the Escherichia coli sterilization rate, Staphylococcus aureus sterilization rate and Klebsiella pneumoniae sterilization rate of Examples 1 to 3 are better. The reason may be that the carboxyl group in tartaric acid, citric acid or malic acid reacts with the hydroxyl group in berberine or magnolia alkaloids to undergo an esterification reaction, and the antibacterial berberine or magnolia alkaloids are fixed to the spandex fiber through an ester bond, thereby improving the antibacterial properties of the fabric.

[0100] Table 1 Wrinkle recovery angle (°) test results

[0101]

[0102]

[0103] Table 2 Escherichia coli sterilization rate (%) test results

[0104]

[0105] Table 3 Staphylococcus aureus sterilization rate (%) test results

[0106]

[0107]

[0108] Table 4 Klebsiella pneumoniae sterilization rate (%) test results

[0109]

[0110] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A process for preparing anti-wrinkle and antibacterial fabrics, characterized in that: The following steps are involved: (1) using polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate as main raw materials, placing them in a prepolymerization reactor for continuous reaction to obtain a prepolymer; (2) adding N,N-dimethylacetamide to the prepolymer, placing it in a dissolver to fully dissolve it, and then transferring it to a chain extension reactor, adding a chain extender and a chain terminator in turn to carry out a chain extension reaction to obtain a polymerization stock solution; (3) adding a finishing agent to the polymerization stock solution, mixing well, adding a catalyst, and heating to cause an esterification reaction to obtain a spinning solution precursor; (4) adding an anti-wrinkle agent and an antibacterial agent to a spinning solution precursor, mixing them evenly, adding a catalyst, and heating them to cause an esterification reaction to obtain a spinning solution; (5) wet spinning the spinning solution to obtain spandex fibers; (6) Weaving spandex fibers to obtain wrinkle-resistant and antibacterial fabrics.

2. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The mass ratio of the polytetramethylene ether glycol and diphenylmethane-4,4'-diisocyanate in step (1) is 6-8:2-4.

3. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The chain extender in step (2) is at least one of 1,4-butanediol, 1,6-hexanediol, trimethylolpropane or ethylenediamine; and the chain terminator is at least one of diethylamine, dipropylamine or cyclohexylamine.

4. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The finishing agent in step (3) is tartaric acid, citric acid or malic acid.

5. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The mass ratio of the polymerization stock solution to the finishing agent in step (3) is 1-3:4-6.

6. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The anti-wrinkle agent in step (4) is carboxymethyl cellulose.

7. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The antibacterial agent in step (4) is berberine or magnolia alkaloids.

8. The process for preparing an anti-wrinkle and antibacterial fabric according to claim 1, characterized in that: The mass ratio of the spinning solution precursor to the anti-wrinkle agent and antibacterial agent in step (4) is 2-4:1-3:6-10.

9. An anti-wrinkle and antibacterial fabric prepared by the preparation method according to any one of claims 1 to 8.

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