Primer slurry for moisture-permeable waterproof fabric and its preparation process

A moisture-permeable and waterproof, preparation process technology, applied in the field of textile fabrics, can solve the problems of difficulty in breaking through 3500MMH2O, insufficient surface toughness of the coating film, low A-grade rate, etc., to improve moisture-permeability, proper permeability, and active time. long effect

Active Publication Date: 2015-08-12
KUNSHAN HUAYANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The holes in the primer layer formed by the primer slurry are easy to overlap, and the water pressure is relatively low, so it is difficult to break through 3500MMH2O;
[0004] (2) The toughness of the surface of the microporous coating film formed by the existing primer slurry is not enough, not scratch-resistant, and not film-resistant;
[0005] (3) The grade A rate of the finished product of the microporous coating of the primer layer formed by the existing primer slurry is low, and the failure rate reaches more than 30%.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0032] Embodiment: A preparation process for primer slurry for moisture-permeable waterproof fabrics, comprising:

[0033] Step 1. Mix butanone, water and polyurethane resin according to the mass ratio of 66~68:3~5:29~31 to form the main resin solution. Note: the mixing ratio of Example 1 is 66:3:31, and the mixing ratio of Example 2 The mixing ratio is 67:5:29, and the mixing ratio of Example 3 is 68:4:30;

[0034] Step 2, add N-methylethanolamine as accelerator in the main resin solution of step 1, the mass ratio of this main resin solution and accelerator is 100: 2.5 or 3 or 3.5;

[0035] Step 3, the mixed solution of butanone and toluene is slowly dropped into the main resin solution through step 2 and uniformly stirred to form a main resin mixed solution. The mass ratio of this mixed solution to the main resin solution is 100:43 or 44 or 45, so Butanone and toluene form the mixed solution according to the mass ratio of 1:2 or 1:1;

[0036] Step 4. Stir and mix hexahexan...

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PUM

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Abstract

The invention discloses an under-coating paint used for moisture permeable waterproof fabrics and a preparation technology, the under-coating paint comprises polyurethane resin, butanone, toluene, water, 1,6-diisocyanatohexane and N-methyl ethanolamine; the preparation technology comprises the following steps: uniformly mixing butanone, water and polyurethane resin to form a main resin solution; adding N-methyl ethanolamine in the main resin solution; placing a mixed liquid of butanone and toluene in the main resin solution to form a main resin mixed solution; mixing 1,6-diisocyanatohexane and the main resin mixed solution according to mass proportion of 100:1.5-2.5 to form the adjusted main resin mixed solution; mixing water and butanone to form a solvent, placing the solvent in the adjusted main resin mixed solution by dividing at least six times for uniformly mixing; filtering the adjusted main resin mixed solution through a nylon net; and standing the filtered main resin mixed solution for at least 2 hours for deaeration treatment. The coating fabrics formed by the under-coating paint has uniform micropore, and is difficult to be expanded when contacting water, so that the moisture permeable performance of the fabric can be enhanced.

Description

technical field [0001] The invention relates to a primer slurry for moisture-permeable waterproof coating fabrics 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-p...

Claims

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Application Information

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