▎ 摘　　要

NOVELTY - Preparing a graphene composition material comprises preparing graphite oxide by using chemical oxidation process, reacting the prepared graphite oxide with a compound containing two isocyanate groups, obtaining graphite oxide with isocyanate groups on the surface, removing the excess of free diisocyanate and block isocyanate group with blocking agent, carrying out the reduction of graphite oxide to graphene by thermal reduction, obtaining blocked isocyanate-modified graphene stably existing in air at room temperature, reacting the modified graphene with active hydrogen-containing resin to be modified and combining at a high temperature. USE - The method is useful for preparing a graphene composition material.