阅读说明：本技术 一种抑菌透气面料的制备方法 (Preparation method of antibacterial breathable fabric ) 是由 彭飞凌 丘日建 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种抑菌透气面料的制备方法。本发明通过浸泡和冷冻干燥处理使得壳聚糖附着在面料的表面甚至渗入到纤维组织中,通过碱性溶液处理面料既能去除乙酸,之后将改性后的面料浸入整理工作液中,水性聚氨酯具有热交联反应性,在整理工艺的烘干阶段,异氰酸酯基团能与面料上的羟基、氨基等活性基团反应,固化交联,具有较好的成膜性和弹性,与氨基改性有机硅丙烯酸酯乳液复配,在面料表面形成很薄的树脂膜,既能包覆壳聚糖,使面料的抗菌性能更加持久,又能改善面料的手感和滑爽感。总之,本发明提供的抑菌透气面料具有持久高效的抑菌性能,又具有良好的透气性能和舒适感。(The invention discloses a preparation method of antibacterial breathable fabric. According to the invention, chitosan is attached to the surface of the fabric and even permeates into fibrous tissues through soaking and freeze drying, acetic acid can be removed through treating the fabric with an alkaline solution, then the modified fabric is soaked into a finishing working solution, the waterborne polyurethane has thermal crosslinking reactivity, in the drying stage of the finishing process, isocyanate groups can react with active groups such as hydroxyl groups, amino groups and the like on the fabric, and are cured and crosslinked, so that the modified fabric has good film forming property and elasticity, and can be compounded with amino modified organic silicon acrylate emulsion to form a thin resin film on the surface of the fabric, so that the chitosan can be coated, the antibacterial property of the fabric is more durable, and the hand feeling and the smooth feeling of the fabric can be improved. In a word, the antibacterial breathable fabric provided by the invention has lasting and efficient antibacterial performance, and also has good breathable performance and comfortable feeling.)

1. The preparation method of the antibacterial breathable fabric is characterized by comprising the following steps of:

(1) carrying out double-layer knitting by using a computerized flat knitting machine according to a double-layer knitting program, locally connecting and fixing the yarns of the front needle bed and the rear needle bed in a yarn hanging target connection mode, and obtaining grey cloth with an air layer after knitting is finished;

(2) putting the obtained grey cloth into a chitosan solution to be soaked for 6-10 hours, after freeze drying, putting the grey cloth into an alkaline solution to be soaked for 1-4 hours, and after cleaning, freeze drying to obtain a chitosan modified fabric;

(3) putting the chitosan modified fabric into finishing working solution, and performing secondary soaking and secondary rolling by using a padder, wherein the finishing working solution is prepared from the following raw materials in parts by weight: 5-20 parts of waterborne polyurethane, 3-8 parts of acrylate, 5-20 parts of amino modified organic silicon acrylate emulsion, 2-6 parts of polyethylene glycol, 2-6 parts of polypropylene glycol and 100-120 parts of water;

(4) cleaning the padded fabric;

(5) and putting the cleaned fabric into a dryer for drying.

2. The preparation method of the antibacterial breathable fabric according to claim 1, wherein the number of revolutions of the front needle bed of the computerized flat knitting machine in the step (1) is the same as the number of revolutions of the back needle bed.

3. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the chitosan solution in the step (2) is prepared by dissolving chitosan in an acetic acid solution, and the concentration of the chitosan solution is 1-5%.

4. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the alkaline solution in step (2) is at least one selected from ammonia water and sodium hydroxide.

5. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the concentration of the alkaline solution in the step (2) is 0.1-2%.

6. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the finishing working solution in the step (3) is prepared by adopting the following method:

mixing acrylate, amino modified organic silicon acrylate emulsion and water, adding polyethylene glycol and polypropylene glycol, heating to 60-80 ℃, stirring for 10-30 min under heat preservation, cooling to 40-50 ℃, adding waterborne polyurethane, and stirring for 20-40 min under heat preservation to obtain finishing working solution.

7. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the conditions of the two-dipping and two-rolling in the step (3) are as follows: the temperature is 25-30 ℃, the rotating speed of a padder is 10-15 r/min, and the rolling residual rate is 65-80%.

8. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the temperature of the water for cleaning in the step (4) is 60-85 ℃.

9. The preparation method of the bacteriostatic breathable fabric according to claim 1, wherein the drying temperature in the step (5) is 120-135 ℃.

Technical Field

The invention relates to the technical field of textile processing, in particular to a preparation method of an antibacterial breathable fabric.

Background

The fabric is one of the most widely used fabrics in daily life, and is commonly used for clothes, bedding, home decoration and the like, wherein the clothes and the bedding need to be in direct contact with human skin. However, the common fabric is easy to yellow in the process of long-time storage, transportation and passing, so that the air permeability of the fabric is influenced, the fabric is easy to corrode by bacteria, and the adverse effect on the human health is caused. With the increasing importance of people on environmental sanitation and self health, the bacteriostatic breathable fabric is gradually favored by people. Therefore, the research and development of the antibacterial breathable fabric have extremely important significance.

Disclosure of Invention

The invention aims to provide a preparation method of a bacteriostatic breathable fabric, which aims to solve the technical problems.

The invention provides a preparation method of antibacterial breathable fabric, which comprises the following steps:

(1) carrying out double-layer knitting by using a computerized flat knitting machine according to a double-layer knitting program, locally connecting and fixing the yarns of the front needle bed and the rear needle bed in a yarn hanging target connection mode, and obtaining grey cloth with an air layer after knitting is finished;

(2) putting the obtained grey cloth into a chitosan solution to be soaked for 6-10 hours, after freeze drying, putting the grey cloth into an alkaline solution to be soaked for 1-4 hours, and after cleaning, freeze drying to obtain a chitosan modified fabric;

(3) putting the chitosan modified fabric into finishing working solution, and performing secondary soaking and secondary rolling by using a padder, wherein the finishing working solution is prepared from the following raw materials in parts by weight: 5-20 parts of waterborne polyurethane, 3-8 parts of acrylate, 5-20 parts of amino modified organic silicon acrylate emulsion, 2-6 parts of polyethylene glycol, 2-6 parts of polypropylene glycol and 100-120 parts of water;

(4) cleaning the padded fabric;

(5) and putting the cleaned fabric into a dryer for drying.

Preferably, the number of rotations of the front needle bed of the computerized flat knitting machine in the step (1) is the same as the number of rotations of the back needle bed.

Preferably, the needle shape of the computerized flat knitting machine in the step (1) is 16G.

Preferably, the chitosan solution in the step (2) is prepared by dissolving chitosan in an acetic acid solution, and the concentration of the chitosan solution is 1-5%.

More preferably, the concentration of the acetic acid solution is 1-5%.

Preferably, the alkaline solution in step (2) is at least one selected from ammonia water and sodium hydroxide.

Preferably, the concentration of the alkaline solution in the step (2) is 0.1-2%.

Preferably, the finishing working solution in the step (3) is prepared by adopting the following method:

mixing acrylate, amino modified organic silicon acrylate emulsion and water, adding polyethylene glycol and polypropylene glycol, heating to 60-80 ℃, stirring for 10-30 min under heat preservation, cooling to 40-50 ℃, adding waterborne polyurethane, and stirring for 20-40 min under heat preservation to obtain finishing working solution.

Preferably, the conditions of the second soaking and the second rolling in the step (3) are as follows: the temperature is 25-30 ℃, the rotating speed of a padder is 10-15 r/min, and the rolling residual rate is 65-80%.

Preferably, the temperature of the water for cleaning in the step (4) is 60-85 ℃.

Preferably, the drying temperature in the step (5) is 120-135 ℃.

Compared with the prior art, the invention has the beneficial effects that:

the chitosan is the only cationic polysaccharide in the nature, and has good cell compatibility and histocompatibility, the chitosan is attached to the surface of the fabric and even permeates into fiber tissues through soaking and freeze drying treatment, the acetic acid can be removed through treating the fabric by alkaline solution, then the modified fabric is soaked into finishing working solution, the waterborne polyurethane has thermal crosslinking reactivity, isocyanate groups can react with active groups such as hydroxyl groups, amino groups and the like on the fabric in the drying stage of the finishing process, the curing crosslinking is realized, the modified fabric has good film forming property and elasticity, the modified fabric is compounded with amino-modified organic silicon acrylate emulsion, a very thin resin film is formed on the surface of the fabric, the chitosan can be coated, the antibacterial property of the fabric is more durable, and the hand feeling and the smoothness of the fabric can be improved. In a word, the antibacterial breathable fabric provided by the invention has a three-layer structure, has lasting and efficient antibacterial performance, and has the characteristics of good breathable performance, softness and comfort.

Detailed Description

The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.