▎ 摘　　要

NOVELTY - Preparing modified graphene comprises (i) adding graphene oxide into the organic solvent, after ultrasonic dispersing, adding glucose, polyvinyl pyrrolidone and silane coupling agent, stirring for 10-20 minutes to obtain primary mixed liquid, (ii) adding organic solvent to the primary mixing liquid, centrifugal washing rest solid substance, obtaining the modified graphene. USE - The method is useful for preparing modified graphene (claimed). ADVANTAGE - The modified graphene is easily dispersed in the oily coating system to improve the dispersibility, and improves corrosion resistance performance of the coating. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) graphene dispersion prepared by dispersing modified graphene in organic solvent; (2) coating comprising modified graphene or graphene dispersion liquid; and (3) epoxy zinc-rich paint comprising component A of pre-polymer, where the component A comprises epoxy resin and modified graphene or graphene dispersion liquid.