▎ 摘　　要

NOVELTY - Curing agent (I), is new comprises graphene quantum dot framework and aliphatic polyamine structure unit connected to the graphene quantum dot framework, and aromatic amine structure unit. USE - Curing agent used for composite coating (claimed). ADVANTAGE - The curing agent can improve the reaction activity and heat resistance. DETAILED DESCRIPTION - Curing agent of formula (I), is new comprises graphene quantum dot framework and aliphatic polyamine structure unit connected to the graphene quantum dot framework, and aromatic amine structure unit, where ring A represents the aromatic ring in graphene quantum dot skeleton, R1 is oxygen-containing group, Ar-R2-NH2 represents the aromatic amine structure unit, Ar is selected from substituted or unsubstituted 6-12C aromatic group, R2 is selected from substituted or unsubstituted 1-6C alkylene group, R3-R4-NH2 represents an aliphatic polyamine structure unit, R3 is selected from -C = O-or-C-OH-C -, R4 is selected from the group consisting of 1-6C alkylene group containing amino group. An INDEPENDENT CLAIM is included for a composite coating, which comprises curing agent.