▎ 摘　　要

NOVELTY - Preparation of graphene aqueous dispersion involves dispersing the graphene in N-vinyl pyrrolidone monomer, stirring to obtain a graphene-N-vinyl pyrrolidone dispersion containing 1-30 %mass graphene, adding the dispersion to water, stirring to obtain a graphene-N-vinyl pyrrolidone-aqueous dispersion containing 0.5-15 %mass graphene, adding 0.5-2 %mass initiator and 0.05-2 %mass crosslinking agent, carrying out polymerization reaction at 50-90 degrees C for 0.5-5 hours, and cooling. USE - Preparation of graphene aqueous dispersion used in aqueous corrosion-resistant coating (all claimed). ADVANTAGE - The process uses graphene having excellent dispersion and stability in an aqueous solution.