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Method for preparing waterproof moisture-permeable coated fabric

A coated fabric, waterproof and moisture-permeable technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of low moisture-permeable coated fabrics, etc., achieve wide application, excellent waterproof and moisture permeability, and improve moisture permeability Effect

Inactive Publication Date: 2010-06-16
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing waterproof and moisture-permeable coated fabrics, to improve the moisture permeability of coated fabrics, improve the waterproofness of low moisture-permeable coated fabrics, and solve the problem of waterproof and moisture-permeable coated fabrics. Contradictions Between Wet Capabilities

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Modification of polyurethane coating agent

[0032] a. Dissolve aminosilane coupling agent (KH550) with 0.5% weight of microcrystalline cellulose powder in ethyl acetate, microcrystalline cellulose powder with a particle size of 5 μm, and stir with a shear mixer for 10 minutes to obtain a concentration of 65% by mass A solution of modified microcrystalline cellulose powder in ethyl acetate.

[0033] b. dissolving aminosilane coupling agent (KH550) with 0.5% by weight of silicon dioxide in ethyl acetate, adding silicon dioxide with a particle diameter of 20nm, and stirring for 10min with a shear mixer to obtain a modified compound with a mass percentage concentration of 65%. A solution of silica in ethyl acetate.

[0034] c. mixing the ethyl acetate solution of the above-mentioned modified microcrystalline cellulose powder and the ethyl acetate solution of modified silicon dioxide;

[0035] d. Add the solution prepared in step c to a polyurethane prepolymer solutio...

Embodiment 2

[0043] (1) Modification of polyurethane coating agent

[0044]a. Dissolve aminosilane coupling agent (KH550) of 0.8% by weight of microcrystalline cellulose powder in ethyl acetate, microcrystalline cellulose powder with a particle size of 50 μm, and stir it with a shear mixer for 20 minutes to obtain a concentration of 60% by mass A solution of modified microcrystalline cellulose powder in ethyl acetate.

[0045] b. Dissolve aminosilane coupling agent (KH550) with 0.8% weight of silicon dioxide in ethyl acetate, add silicon dioxide with a particle diameter of 200nm, and stir with a shear mixer for 20min to obtain a modified compound with a mass percentage concentration of 60%. A solution of silica in ethyl acetate.

[0046] c. mixing the ethyl acetate solution of the above-mentioned modified microcrystalline cellulose powder and the ethyl acetate solution of modified silicon dioxide;

[0047] d. Add the solid content of 30% polyurethane prepolymer solution (single-component...

Embodiment 3

[0055] (1) Modification of polyurethane coating agent

[0056] a. Dissolve aminosilane coupling agent (KH550) of 1% by weight of microcrystalline cellulose powder in ethyl acetate, add microcrystalline cellulose powder with a particle size of 80 μm, and stir for 40 minutes with a shear mixer to obtain a mass percent concentration of 50 % modified microcrystalline cellulose powder in ethyl acetate solution.

[0057] b. Dissolving aminosilane coupling agent (KH550) with 1% by weight of silicon dioxide in ethyl acetate, adding silicon dioxide with a particle diameter of 500nm, and stirring with a shear mixer for 40min to obtain a modified compound with a mass percentage concentration of 50%. A solution of silica in ethyl acetate.

[0058] c. Mix the ethyl acetate solution of the above-mentioned modified microcrystalline cellulose powder and the ethyl acetate solution of modified silicon dioxide; add 5% polyurethane solid content trimethylol melamine crosslinking agent and 1% und...

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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Abstract

The invention discloses a method for preparing a waterproof moisture-permeable coated fabric. The moisture permeability of a polyurethane coated fabric is improved by adding modified cellulose powder which accounts for 5 to 50 percent of the weight of polyurethane and is modified by a silane coupling agent into a polyurethane coating agent, and the waterproof property of the polyurethane is improved by adding inorganic powder which accounts for 0.5 to 5 percent of the weight of the polyurethane and is modified by the silane coupling agent, wherein the silane coupling agent accounts for 0.5 to 1 percent of the weight of the modified cellulose powder; and the silane coupling agent accounts for 0.5 to 1 percent of the weight of the inorganic powder. The modified polyurethane which accounts for 15 to 50 percent of the weight of a base fabric is coated on the base fabric of a knitted fabric, a woven fabric or a non-woven fabric to prepare the waterproof moisture-permeable coated fabric with good performance. The method is simple and easy, and can perform mass production; and the prepared fabric has excellent waterproof and moisture-permeable abilities, solves the contradiction between the waterproof capacity and the moisture-permeable capacity of the fabrics, and can be applied to coated fabrics for functional clothing, shoes, tents and buildings in a large quantity.

Description

technical field [0001] The invention relates to the field of textile materials, in particular to a method for preparing a waterproof and moisture-permeable coated fabric. Background technique [0002] Waterproof and moisture-permeable fabrics have waterproof, windproof and moisture-permeable functions, and are widely used in functional clothing, tents, shoes and industrial fields. At present, the processing methods of waterproof and moisture-permeable fabrics mainly include high-density fabrics (as disclosed in patent CN1721596), lamination of fabrics and hydrophilic films (as disclosed in patent CN1940162), and lamination of fabrics and microporous films (as disclosed in patent CN1519106). Open), fabric and hydrophilic coating agent coating (disclosed as patent CN101424045). Among them, the waterproof and moisture-permeable coated fabric obtained by coating the fabric with a hydrophilic coating agent has high moisture permeability, convenient processing, and low cost, and ...

Claims

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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Application Information

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IPC IPC(8): D06M15/568D06M15/05D06M15/09D06M11/79
Inventor 张华鹏闻克瑜朱海霖陈建勇冯新星
Owner ZHEJIANG SCI-TECH UNIV
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