Moisture permeation and water proofing fabric, and preparation process thereof

A moisture-permeable, waterproof, manufacturing process technology, applied in the field of textile fabrics, can solve the problems of uneven micropores and easy expansion, and achieve the effects of long active time, moderate reaction speed, and prevention of affecting uniformity.

Inactive Publication Date: 2012-08-01
KUNSHAN HUAYANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a primer slurry for moisture-permeable waterproof fabrics and its preparation process, which solves the weaknesses of the existing moisture-permeable coating fabrics, which are uneven in micropores and easy to swell when exposed to water, thereby improving the fabric itself. moisture permeability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0073] Embodiment 1-3: A moisture-permeable waterproof fabric, comprising a base fabric and a coating layer located on one side of the base fabric, the coating layer is sequentially composed of a primer, a first top coat, and a first coating layer The composition of the second topcoat overlay on the topcoat surface;

[0074] Both the first and second undercoat layers are obtained by drying the slurry composed of the following mass proportion components:

[0075] Table 1

[0076] Example 1 Example 2 Example 3

[0077] Polyurethane resin 100 100 100 butanone 19 20 21 Toluene 28 30 32 water 43 45 47 1,6-Hexyl diisocyanate 2.8 3 3.2 N-Methylethanolamine 2.8 3 3.2

[0078] The first and second top coats are obtained by drying the slurry consisting of the following mass proportion components:

[0079] Table 2

[0080] Example 1 Example 2 Example 3 ...

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PUM

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Abstract

The present invention discloses a moisture permeation and water proofing fabric, and a preparation process thereof. According to the fabric, a prime coat comprises: a polyurethane resin, butanone, toluene, water, 1,6-diisocyanatohexane and N-methylethanolamine; a first surface coating and a second surface coating comprise a polyurethane resin, butanone, toluene, water and N-methylethanolamine. The preparation process comprises: mixing 1,6-diisocyanatohexane and a main resin; mixing water and butanone to form a solvent; adding the solvent to the main resin mixing solution in at least 6 times; filtering the resulting mixed solution with a nylon net to obtain a filtered main resin solution; carrying out a deaeration treatment to form a prime coat slurry; blending a surface coating slurry with a matching solution viscosity of 3500-6000 mpas; coating the prime coat slurry on the surface of the base cloth to form the prime coat, and drying; coating the surface coating slurry on the surface of the prime coat in 2 times to form the surface coatings, and drying. In the prior art, micropores in the hydrophilic moisture permeation processing coating fabric are not uniform, and are easily expanded when contacting the water. With the present invention, the disadvantages in the prior art are solved, and the moisture permeation performance of the fabric is improved.

Description

technical field [0001] The invention relates to a moisture-permeable waterproof coating fabric and a preparation process thereof, belonging to the technical field of textile fabrics. Background technique [0002] The hydrophilic non-porous PU moisture-permeable raw material currently used in the market, this method is to apply the hydrophilic non-porous PU moisture-permeable raw material to the surface of the base fabric through a coating machine, and then pass it through the coating machine oven. Hot air drying, solvent volatilization, and film formation. Make the fabric waterproof and moisture-permeable. The moisture-permeable principle is that the moisture-permeable raw materials contain hydrophilic substances, which have the functions of moisture absorption-diffusion-desorption. The moisture-permeable fabric processed by this process will swell when it encounters water, resulting in a decrease in the abrasion resistance of the film, and the moisture-permeable performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/564D06M13/395D06M13/368
Inventor 张子睿
Owner KUNSHAN HUAYANG NEW MATERIAL
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