Exterior wall coating and preparation method and application method thereof
An exterior wall coating and aspartic acid ester technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of insufficient elasticity, poor weather resistance, poor gloss and color retention, etc., to improve elasticity and low temperature flexibility , Improve UV resistance, good gloss and color retention
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[0033] Preparation method of exterior wall paint:
[0034] Add polyisocyanate to polyol, make polyol react with polyisocyanate to form isocyanate-terminated prepolymer, then add the rest of component A and mix evenly to obtain component A.
[0035] Add each substance in component B into the disperser, and disperse through the disperser for more than 30 minutes to obtain component B.
[0036] According to isocyanate group (A component): imino group (B component) = 1:1, weigh A component and B component respectively and pack them separately.
[0037] In component B of Example 1-6: 0.5 parts by weight of defoamer, 0.5 parts by weight of leveling agent, 0.3 parts by weight of dispersant, 0.5 parts by weight of anti-settling agent, 0.2 parts by weight of matting agent, 25 parts by weight of filler, pigment 3 parts by weight, 30 parts by weight of solvent. The A component and the rest of the materials making up the B component are shown in Table 1 below.
[0038] All the other su...
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