Under-coating paint used for moisture permeable waterproof fabrics and preparation technology
A moisture-permeable waterproof and preparation technology, which is applied in the field of textile fabrics, can solve the problems that it is difficult to break through 3500MMH2O, the surface toughness of the coating film is not enough, and the water pressure is low, so as to improve the moisture permeability, proper permeability, and avoid knots skin effect
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[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 the hexah...
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