▎ 摘　　要

NOVELTY - Preparing graphene- based polymer composite material comprises (a) uniformly dispersing modified silica and 4-dimethylaminopyridine in alcohol solution of graphene oxide powder under inert gas, and undergoing condensation reaction to obtain first precursor, where amino groups are attached to the surface of the modified silica, and numerous carboxy groups exist on the surface of the graphene oxide powder, (b) uniformly dispersing the first precursor in a water solvent by ultrasonic, adding a curing agent and a binder, stirring uniformly, adding bisphenol A epoxy resin, mixing uniformly, and drying to obtain a second precursor, and (c) granulating the second precursor and crushing by a twin-screw extruder. USE - The graphene- based polymer composite material is useful in preparing anticorrosive paint (claimed). ADVANTAGE - The anti-corrosive paint has good performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-based polymer composite material prepared by the above-mentioned preparation method.