▎ 摘　　要

NOVELTY - A coating comprises component (A) and component (B) in weight ratio of (1.5-2.5):1. The component (A) comprises 38.5-56 wt.% graphene graft modified self-emulsifying waterborne epoxy curing agent, 2-5 wt.% latent solvent, 0.1-2 wt.% dispersant, 0.2-2 wt.% defoaming agent and 35-59.2 wt.% zinc powder. The component (B) comprises 75.6-90.6 wt.% epoxy resin emulsion and 9.4-24.4 wt.% water. USE - The coating is useful for decorative applications and steel structure. ADVANTAGE - The coating is economical, prepared by simple method and suitable for large-scale industrial production, and improves the anticorrosive performance of steel structure. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of coating, which involves weighing graphene graft modified self-emulsifying waterborne epoxy curing agent, latent solvent, dispersant defoaming agent and zinc powder and uniformly mixing to obtain component (A), weighing epoxy resin emulsion and water and uniformly mixing to obtain component (B), mixing component (A) and component (B) and uniformly stirring.