▎ 摘　　要

NOVELTY - Preparation of nano-modified polyaspartate polyurea heavy-duty anticorrosive coating involves: (1) preparing a component (A) by dispersing and stirring 300-500 pts. wt. polyaspartate resin, 20-50 pts. wt. diluent, 5-20 pts. wt. dispersant and a portion of 5-10 pts. wt. defoamer to obtain a mixture (A), adding 2-5 pts. wt. graphene oxide fine powder, 1-2 pts. wt. carbon nanotubes, 100-300 pts. wt. zinc powder, 30-50 pts. wt. pigment and filler to the mixture (A) and dispersing to obtain a mixture (B), adding the remaining portion of defoamer to the mixture (B), 50-100 pts. wt. hydroxy low surface energy resin, 1-3 pts. wt. substrate wetting agent, 1-5 pts. wt. adhesion promoter, 10-20 pts. wt. UV absorbent, 10-20 pts. wt. dewatering agent and 1-3 pts. wt. anti-settling agent and dispersing, where the amount of defoamer is 5-10 pts. wt.; and (2) preparing a component (B) by mixing and stirring low viscosity, monofunctional isocyanate, diluent and aliphatic isocyanate curing agent. USE - The method is useful for preparing nano-modified polyaspartate polyurea heavy-duty anticorrosive coating (claimed). ADVANTAGE - The method provides nano-modified polyaspartate polyurea heavy-duty anticorrosive coating with high coating efficiency. DETAILED DESCRIPTION - Preparation of nano-modified polyaspartate polyurea heavy-duty anticorrosive coating involves: (1) preparing a component (A) by dispersing and stirring 300-500 pts. wt. polyaspartate resin, 20-50 pts. wt. diluent, 5-20 pts. wt. dispersant and a portion of 5-10 pts. wt. defoamer to obtain a mixture (A), adding 2-5 pts. wt. graphene oxide fine powder, 1-2 pts. wt. carbon nanotubes, 100-300 pts. wt. zinc powder, 30-50 pts. wt. pigment and filler to the mixture (A) and dispersing to obtain a mixture (B), adding the remaining portion of defoamer to the mixture (B), 50-100 pts. wt. hydroxy low surface energy resin, 1-3 pts. wt. substrate wetting agent, 1-5 pts. wt. adhesion promoter, 10-20 pts. wt. UV absorbent, 10-20 pts. wt. dewatering agent and 1-3 pts. wt. anti-settling agent and dispersing, where the amount of defoamer is 5-10 pts. wt.; and (2) preparing a component (B) by mixing and stirring 0.5-1 pt. wt. low viscosity, monofunctional isocyanate (additive TI) as a dehydrating agent, 10-20 pts. wt. diluent and 100 pts. wt. aliphatic isocyanate curing agent. The components (A) and (B) are used according to the isocyanate index of 1.05-1.10.