Surface coating slurry for moisture-permeable waterproof fabric and its preparation process
A preparation process, moisture-permeable and waterproof technology, applied in the field of textile fabrics, can solve the problems of difficulty in breaking through 3500MMH2O, insufficient surface toughness of the topcoat film, low A-grade rate of the topcoat, etc., so as to improve the moisture permeability and permeability. Appropriate, good fastness effect
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[0030] Embodiment 1-3: A preparation process for surface coating slurry for moisture-permeable waterproof coating fabrics, including:
[0031] 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;
[0032] Step 2. Slowly drop the mixed solution of methyl ethyl ketone and toluene into the main resin solution of step 1 and uniformly stir to form a main resin mixed solution. The mass ratio of the mixed solution to the main resin solution is 100:43-45. Ketone and toluene form the mixed solution according to the mass ratio of 1:2 or 1:1;
[0033] Step 3. Stir and mix N-methylethanolamine and the main resin mixed solution in step 2 according to the mass ratio of 100:1.5 or 2 or 2.5 at a temperature of 25 to 35° C. at a speed of 1000 rpm to form an adju...
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