▎ 摘　　要

NOVELTY - Coupling of interfacial hyperbranched polyamide of waterborne epoxy coating and graphene oxide composite coating comprises using hyperbranched polyamide as interface coupling medium between waterborne epoxy coating and graphene oxide, dispersing graphene oxide in a polyamine-based compound and carrying out in-situ grafting of a hyperbranched polyamide with graphene oxide and waterborne epoxy coating. USE - The method is useful for coupling of interfacial hyperbranched polyamide of waterborne epoxy coating and graphene oxide composite coating. ADVANTAGE - The graphene grafted hyperbranched polyamide improves the dispersion properties of graphene oxide and interface chemical reaction. The method blocks water, action of brine and acid and base with hydrophilic groups and substrates in the coating, improves the water resistance, salt water resistance, and acid and alkali resistance of the coating.