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Preparation method and application of coating agent for waterproof moisture-permeable cotton fabric

A technology of waterproof and moisture-permeable, coating agent, applied in textiles and papermaking, etc., can solve the problems of imperfect waterproof and moisture-permeable, and achieve the effect of strong market promotion prospect and simple preparation method.

Active Publication Date: 2019-02-12
湖北龙船调服饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coated cotton fabrics are widely used in textiles and occupy a relatively high proportion. However, due to their imperfect waterproof and moisture permeability, there is still a lot of room for improvement in their waterproof and moisture permeability modification.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method and application of coating agent for waterproof moisture-permeable cotton fabric
  • Preparation method and application of coating agent for waterproof moisture-permeable cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, a waterproof and moisture-permeable cotton fabric coating agent is prepared by the following method, including the following steps:

[0020] (1) Preparation of oil-in-water emulsion: swell 5 g of cellulose in glacial acetic acid for 2 hours, then dissolve it in a mixed solution of 30 mL of acetic anhydride and 30 mL of acetic acid, and add sulfuric acid to the system dropwise. The amount of sulfuric acid is 1.0% of the total volume of acetic anhydride and acetic acid, react at 55°C for 2h. After the reaction, neutralize the sulfuric acid in the system to pH 7.6 with sodium hydroxide, and then pour the above reactants into distilled water to precipitate cellulose acetate Finally, the obtained cellulose acetate was centrifuged and rinsed to neutrality several times, and then dried in vacuum; the obtained 5g dried cellulose acetate was dissolved in 50mL of dichloromethane to obtain a clear and transparent solution, and 0.5g of Span 80 was added to the above...

Embodiment 2

[0026] In this embodiment, a waterproof and moisture-permeable cotton fabric coating agent is prepared by the following method, including the following steps:

[0027] (1) Preparation of oil-in-water emulsion: swell 5 g of cellulose in glacial acetic acid for 3 hours, then dissolve it in a mixed solution of 40 mL of acetic anhydride and 45 mL of acetic acid, and add sulfuric acid to the system dropwise. The amount of sulfuric acid is 1.2% of the total volume of acetic anhydride and acetic acid, react at 55°C for 2h. After the reaction, neutralize the sulfuric acid in the system to pH 7.6 with sodium hydroxide, and then pour the above reactants into distilled water to precipitate cellulose acetate Finally, the obtained cellulose acetate was centrifuged and rinsed to neutrality several times, and then dried under vacuum; the obtained 5g dry cellulose acetate was dissolved in 50mL dichloromethane to obtain a clear and transparent solution, and 0.6g Span 80 was added to the above solu...

Embodiment 3

[0033] In this embodiment, a waterproof and moisture-permeable cotton fabric coating agent is prepared by the following method, including the following steps:

[0034] (1) Preparation of oil-in-water emulsion: swell 5 g of cellulose in glacial acetic acid for 4 hours, then dissolve it in a mixed solution of 30 mL of acetic anhydride and 30 mL of acetic acid, and add sulfuric acid dropwise to the system. The amount of sulfuric acid is 1.5% of the total volume of acetic anhydride and acetic acid, react at 55°C for 2h. After the reaction, neutralize the sulfuric acid in the system to pH 7.6 with sodium hydroxide, and then pour the above reactants into distilled water to precipitate cellulose acetate Finally, the obtained cellulose acetate was centrifuged and rinsed to neutrality several times, and then dried under vacuum; the obtained 5g of dried cellulose acetate was dissolved in 50mL of dichloromethane to obtain a clear and transparent solution, and 0.7g of Span 80 was added to the...

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Abstract

The invention relates to a preparation method and application of a coating agent for waterproof moisture-permeable cotton fabric. The preparation method is characterized by including the steps of preparing hollow porous cellulose microspheres; polymerizing and emulsifying monomers such as acrylic acid, allyl glycidyl ether and butyl acrylate to obtain a polyacrylate emulsion; compounding the hollow porous cellulose microspheres with the polyacrylate emulsion to obtain a hollow porous cellulose microsphere / polyacrylate composite emulsion; the composite emulsion is the coating agent for the waterproof moisture-permeable cotton fabric. After the coating agent is used for carrying out coating finishing on the cotton fabric, the waterproof moisture-permeable coated cotton fabric is obtained. The hydrostatic pressve of the waterproof moisture-permeable coated cotton fabric prepared by the method reaches 6,400-7,250 Pa, and the amount of moisture permeability reaches 250-270 g / (m<2>.24h), obviously higher than those of purchased coated cotton fabric; after the waterproof moisture-permeable coated cotton fabric is washed for 10 times, indicators do not decrease significantly, indicating that the stability and the durability of the coated cotton fabric are high.

Description

Technical field [0001] The invention belongs to the technical field of fabric coating, and specifically relates to a preparation method and application of a waterproof and moisture-permeable cotton fabric coating agent. Background technique [0002] Waterproof and moisture-permeable fabrics are also called "breathable fabrics", which means that water does not penetrate into the fabric under a certain pressure, and the sweat emitted by the human body can be transmitted to the outside through the fabric diffusion, and will not accumulate or condense between the skin and clothes. People feel stuffy functional fabrics. Waterproofness refers to the resistance performance of fabric when it penetrates external water with a certain pressure; moisture permeability is the performance of absorption, transmission and diffusion of sweat in the fabric. [0003] At present, coated fabrics have many advantages. Coatings can give fabrics different functions, such as: waterproof, flame retardant, a...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/04
CPCD06N3/0061D06N3/0068D06N3/0077D06N3/042D06N2205/08D06N2209/126D06N2209/142
Inventor 张平邓健彭雄义彭帅梁永红殷国益粟斯伟蔡映杰王强
Owner 湖北龙船调服饰有限公司
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