▎ 摘　　要

NOVELTY - Performing bonding of aqueous polyurethane coating and graphene oxide composite coating interface hyperbranched polyamide involves using hyperbranched polyamide as interfacial bonding agent between aqueous polyurethane and graphene oxide, and then dispersing graphene oxide in polyamine-based compound, performing in-situ grafting of hyperbranched polyamide with graphene oxide followed by interfacial adhesion reaction to obtain graphene oxide grafted hyperbranched polyamide with an aqueous polyurethane coating. USE - Method for performing bonding of aqueous polyurethane coating and graphene oxide composite coating interface hyperbranched polyamide. ADVANTAGE - The method enables to perform bonding of aqueous polyurethane coating and graphene oxide composite coating interface hyperbranched polyamide, which improves the dispersibility of the oxidized graphite alkene, improves the interfacial chemical reaction, mechanical property and waterproof performance of the coating, and has wide market application prospect and good economic benefit and social benefit.