▎ 摘　　要

NOVELTY - A oxidized graphene-enhanced main chain benzoxazine composite resin is functionalized graphene oxide-modified main chain benzoxazine/hydrocarbon resin binary resin or functionalized graphene oxide-modified main chain benzoxazine/epoxy resin/hydrocarbon resin ternary resin comprising 0.1-5 pts. wt. functionalized graphene oxide and 5-99.9 pts. wt. main chain benzoxazine/hydrocarbon resin binary resin or main chain benzoxazine/epoxy resin/hydrocarbon resin ternary resin. Functionalized graphene oxide is carboxylated graphene oxide or aminated graphene oxide. Main chain benzoxazine/hydrocarbon resin binary resin is obtained by crosslinking 50-90 pts. wt. main chain benzoxazine and 10-50 pts. wt. hydrocarbon resin. Main chain benzoxazine/epoxy resin/hydrocarbon resin ternary resin is obtained by carrying out crosslinking polymerization of 50-80 pts. wt. main chain benzoxazine, 10-20 pts. wt. epoxy resin, and 10-30 pts. wt. hydrocarbon resin. USE - Oxidized graphene-enhanced main chain benzoxazine composite resin. ADVANTAGE - The oxidized graphene-enhanced main chain benzoxazine composite resin has short curing time, excellent dispersibility of nanoparticles, heat resistance, moisture resistance and mechanical properties, and low dielectric constant and dielectric loss, and reduced shrinkage during curing.