Hydroxylated graphene aqueous polyurethane anticorrosive coating material preparation method

The invention discloses a hydroxylated graphene aqueous polyurethane anticorrosive coating material preparation method, wherein the specific components comprise, by weight, 0.1-5 parts of hydroxylatedgraphene, 60-90 parts of an aqueous polyurethane resin, 0.5-1.0 part of a demolding agent, 0.5-1.0 part of an antifoaming agent, 0.5-1.0 part of a leveling agent, 0.5-1.0 part of an accelerant and 100 parts of deionized water. The preparation method comprises: carrying out ball milling dispersion on hydroxylated graphene, aqueous polyurethane, an aqueous polyurethane auxiliary agent and deionizedwater in a horizontal ball mill, and testing the corrosion resistance through coating. According to the invention, the hydroxylated graphene aqueous polyurethane anticorrosive coating material has excellent adhesive force on steels, irons and other substrates, has excellent flexibility, excellent wear resistance and other mechanical properties, has significant protection effect in chemical mediums such as acids, alkalis,