Environment-friendly polyurethane waterproof coating and preparation method thereof
A polyurethane waterproof and coating technology, applied in the field of coatings, can solve problems such as aging resistance, poor mechanical properties, and environmental pollution, and achieve the effects of improving mechanical properties, simple preparation methods, and delaying UV aging chain breakage
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[0025] The present invention also provides a kind of preparation method of environment-friendly polyurethane waterproof coating, at least comprises the following steps:
[0026] The preparation method of the A component at least comprises the following steps:
[0027] Take each component according to the above-mentioned raw material proportioning;
[0028] mixing the polyether diol and polyether triol, heating, vacuum decompression, dehydration, and cooling to obtain the first mixture;
[0029] Add the first mixture, montmorillonite, and nano-silica to the reactor, add toluene-2,4-diisocyanate under stirring conditions, raise the temperature to 70°C-80°C, and carry out the reaction to prepare component A Polyurethane waterproof coating prepolymer;
[0030] The preparation method of the B component at least includes the following steps:
[0031] Take each component according to the above-mentioned raw material proportioning;
[0032] Add dispersant, petroleum distillate oil...
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