• 专利标题:   Preparation of nano-modified polyaspartate polyurea heavy-duty anticorrosive coating involves using e.g. polyaspartate resin, diluent, dispersant, defoamer, graphene oxide fine powder, carbon nanotubes and zinc powder, and uniformly mixing.
  • 专利号:   CN111662623-A
  • 发明人:   WANG B, WEN X, WANG W, LI C, SHAO C
  • 专利权人:   QINGDAO AIR NEW MATERIALS CO LTD
  • 国际专利分类:   C09D175/02, C09D005/10, C09D005/16, C09D007/61, C09D007/62
  • 专利详细信息:   CN111662623-A 15 Sep 2020 C09D-175/02 202082 Pages: 13 Chinese
  • 申请详细信息:   CN111662623-A CN10692158 17 Jul 2020
  • 优先权号:   CN10692158

▎ 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.