| abstract |
The invention discloses a flame-retardant polyurea waterproof coating which is prepared from a prepolymer A and resin R, wherein the basic formula of the prepolymer A comprises 35-55% of N220, 40-55% of liquefied MDI and 15-10% of a liquid additive flame retardant 1; the basic formula of the resin R comprises 30-50% of N330, 10-30% of flame retardant resin, 5-20% of a liquid additive flame retardant 2, 15-25% of an amine chain extender, 3-10% of nano-aluminum trihydrate and nano-magnesium hydroxide, 3-5% of a catalyst, 3-5% of a coupling agent, 3-5% of a dispersant, 3-5% of a water absorbent, 3-5% of a defoamer, 3-5% of a light stabilizer and 3-5% of an ultraviolet light absorber. The coating disclosed by the invention is excellent in waterproof, corrosionproof and aging-resistant performances and fast setting and short in construction period. |