Low-temperature-resistant and anti-cracking waterborne coating
A water-based coating, anti-cracking technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of low temperature resistance and crack resistance, etc., to increase mechanical properties and decorative properties, The effect of increasing mechanical properties and increasing low temperature resistance
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[0017] Example 1
[0018] A low-temperature resistant and anti-cracking water-based paint. Its raw materials by weight include: 90 parts of modified polyurethane emulsion, 30 parts of acrylic emulsion, 23 parts of pigments, 17 parts of fillers, 5 parts of propylene glycol methyl ether acetate, and dodecyl sulfonic acid 4 parts of sodium, 0.5 part of leveling agent, 0.05 part of polydimethylsiloxane, 0.06 part of emulsified silicone oil, 0.5 part of wetting agent, 0.7 part of sodium carboxymethyl cellulose, γ-methacryloxypropyl 1.4 parts of trimethoxysilane and 19 parts of water.
Example Embodiment
[0019] Example 2
[0020] A low-temperature resistant and anti-cracking water-based paint. Its raw materials in parts by weight include: 80 parts of modified polyurethane emulsion, 40 parts of acrylic emulsion, 20 parts of pigments, 20 parts of fillers, 4 parts of propylene glycol methyl ether acetate, and dodecyl sulfonic acid 5 parts of sodium, 0.4 parts of leveling agent, 0.06 parts of polydimethylsiloxane, 0.05 parts of emulsified silicone oil, 0.6 parts of wetting agent, 0.6 parts of sodium carboxymethyl cellulose, γ-methacryloxypropyl 1.6 parts of trimethoxysilane, 18 parts of water;
[0021] Among them, in the preparation process of the modified polyurethane emulsion, in a nitrogen atmosphere, N-methylpyrrolidone, 2,4-toluene diisocyanate, dimethylolpropionic acid, hydroxy-terminated polybutadiene, dilauric acid two Mix the butyl tin, heat up, keep stirring, add modified montmorillonite, continue to keep stirring, add 1,4-butanediol, continue to keep stirring, then add hydr...
Example Embodiment
[0022] Example 3
[0023] A low-temperature resistant and anti-cracking water-based paint. Its raw materials in parts by weight include: 100 parts of modified polyurethane emulsion, 20 parts of acrylic emulsion, 25 parts of pigments, 15 parts of fillers, 6 parts of propylene glycol methyl ether acetate, and dodecyl sulfonic acid 3 parts of sodium, 0.6 parts of leveling agent, 0.04 parts of polydimethylsiloxane, 0.07 parts of emulsified silicone oil, 0.4 parts of wetting agent, 0.8 parts of sodium carboxymethyl cellulose, γ-methacryloxypropyl 1.2 parts of trimethoxysilane, 20 parts of water;
[0024] Among them, the filler is composed of 800 mesh pottery clay and 800 mesh diatomite, wherein the weight ratio of pottery clay to diatomite is 3:2;
[0025] In the preparation process of the modified polyurethane emulsion, N-methylpyrrolidone, 2,4-toluene diisocyanate, dimethylolpropionic acid, hydroxy-terminated polybutadiene, and dibutyltin dilaurate were mixed in a nitrogen atmosphere. ...
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