Waterborne polyurethane compound paint and production method thereof
A technology of water-based polyurethane and composite coatings, which is applied in the direction of polyurea/polyurethane coatings, epoxy resin coatings, coatings, etc., and can solve the problems of poor water penetration resistance and low mechanical strength
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Embodiment 1
[0031] A kind of water-based polyurethane composite paint, comprises following raw materials in parts by weight:
[0032] 20 parts of polytetrahydrofuran diol, 1 part of 1,4-butanediol, 2 parts of 2,2-dimethylol propionic acid, 12 parts of isophorone diisocyanate, 4 parts of N,N-dimethylacetamide , 0.1 part of dibutyltin dilaurate, 16 parts of acetone, 200 parts of deionized water, 0.1 part of diethylenetriamine, 40 parts of modified epoxy resin, 0.1 part of defoamer, 0.1 part of wetting agent, and 0.1 part of leveling agent part and 0.1 part of thickener;
[0033] This waterborne polyurethane composite coating is prepared by the following steps:
[0034] The first step, put polytetrahydrofuran diol and 1,4-butanediol into a three-necked flask, put the three-necked flask into a vacuum drying oven at 70°C, and dry it in vacuum for 2 hours. After the drying, take out the flask and cool the three-necked flask to 20°C, add 2,2-dimethylolpropionic acid, isophorone diisocyanate, N...
Embodiment 2
[0047] A kind of water-based polyurethane composite paint, comprises following raw materials in parts by weight:
[0048] 25 parts of polytetrahydrofuran diol, 2 parts of 1,4-butanediol, 3 parts of 2,2-dimethylol propionic acid, 13 parts of isophorone diisocyanate, 5 parts of N,N-dimethylacetamide , 0.2 parts of dibutyltin dilaurate, 18 parts of acetone, 250 parts of deionized water, 0.2 parts of diethylenetriamine, 45 parts of modified epoxy resin, 0.2 parts of defoamer, 0.2 parts of wetting agent, and 0.2 parts of leveling agent part and 0.2 part of thickener;
[0049] This waterborne polyurethane composite coating is prepared by the following steps:
[0050] The first step, put polytetrahydrofuran diol and 1,4-butanediol into a three-necked flask, put the three-necked flask into a vacuum drying oven at 75°C, and dry it in vacuum for 2.5 hours. After drying, take out the flask and cool the three-necked flask To 25°C, add 2,2-dimethylolpropionic acid, isophorone diisocyanat...
Embodiment 3
[0063] A kind of water-based polyurethane composite paint, comprises following raw materials in parts by weight:
[0064]30 parts of polytetrahydrofuran diol, 3 parts of 1,4-butanediol, 4 parts of 2,2-dimethylol propionic acid, 14 parts of isophorone diisocyanate, 6 parts of N,N-dimethylacetamide , 0.3 parts of dibutyltin dilaurate, 20 parts of acetone, 300 parts of deionized water, 0.3 parts of diethylenetriamine, 50 parts of modified epoxy resin, 0.3 parts of defoamer, 0.3 parts of wetting agent, and 0.3 parts of leveling agent part and 0.3 part of thickener;
[0065] This waterborne polyurethane composite coating is prepared by the following steps:
[0066] The first step, put polytetrahydrofuran diol and 1,4-butanediol into a three-necked flask, put the three-necked flask in a vacuum drying oven at 80°C, and dry it in vacuum for 3 hours. After the drying, take out the flask and cool the three-necked flask to 30°C, add 2,2-dimethylolpropionic acid, isophorone diisocyanate...
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