Water-proof two-component polyurethane coating and preparation method thereof
A polyurethane coating, a two-component technology, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of people's life and property threats, difficulty in fighting fires, etc.
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Embodiment 1
[0040] This embodiment provides a two-component water-resistant polyurethane coating, which comprises two components A and B mixed in equal proportions, and component A includes the following components in parts by mass:
[0041] 2,4-toluene diisocyanate: 30 parts, polypropylene carbonate diol with a molecular weight of 2660: 55 parts, 1,4-butanediol: 12 parts, ammonium polyphosphate: 9 parts, formaldehyde: 5 parts, acetone : 12 parts, cresyl diphenyl phosphate: 20 parts, melamine: 2 parts;
[0042] Component B includes the following components in parts by mass:
[0043] Modified polyamide curing agent: 30 parts, modified silane coupling agent: 70 parts;
[0044] Polypropylene carbonate glycol is the polypropylene carbonate glycol of 2660 molecular weight after purification, and the purification method concrete operation of polypropylene carbonate glycol is as follows:
[0045] Dehydrate the organic solvent with a 5A molecular sieve for 6 days for later use;
[0046] Ad...
Embodiment 2
[0054] This embodiment provides a two-component water-resistant polyurethane coating, which comprises two components A and B mixed in equal proportions, and component A includes the following components in parts by mass:
[0055] Hexamethylene diisocyanate: 40 parts, polypropylene carbonate diol with a molecular weight of 2660: 50 parts, 1,4 butanediol: 15 parts, dibutyltin dilaurate: 10 parts, formaldehyde: 8 parts, Ethanol: 15 parts, triphenyl phosphate: 25 parts, chlorinated paraffin: 3 parts;
[0056] Component B includes the following components in parts by mass:
[0057] Modified polyamide curing agent: 50 parts, modified silane coupling agent: 50 parts;
[0058] Polypropylene carbonate diol is polypropylene carbonate diol after purification, and the purification method concrete operation of polypropylene carbonate diol is as follows:
[0059] Dehydrate the organic solvent with 5A molecular sieves for 7 days for later use;
[0060] Add polypropylene carbonate diol...
Embodiment 3
[0068] This embodiment provides a two-component water-resistant polyurethane coating, which comprises two components A and B mixed in equal proportions, and component A includes the following components in parts by mass:
[0069] Isophorone diisocyanate: 35 parts, polypropylene carbonate diol with a molecular weight of 2660: 40 parts, 1,4 butanediol: 10 parts, melamine phosphate: 8 parts, formaldehyde: 6 parts, N-formaldehyde Base pyrrolidone: 10 parts, triphenyl phosphate: 22 parts, chlorinated paraffin: 2 parts;
[0070] Component B includes the following components in parts by mass:
[0071] Modified polyamide curing agent: 30 parts, modified silane coupling agent: 40 parts;
[0072] Polypropylene carbonate diol is polypropylene carbonate diol after purification, and the purification method concrete operation of polypropylene carbonate diol is as follows:
[0073] Dehydrate the organic solvent with 5A molecular sieves for 5 days for later use;
[0074] Add polypropyl...
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