▎ 摘　　要

NOVELTY - Preparing graphene oxide-polydopamine- ceric oxide/polyurethane wear-resistant superhydrophobic long-acting anti-corrosion coating comprises utilizing polydopamine to modify graphene oxide to improve the dispersion of graphene oxide, and adding corrosion inhibitor cerium oxide, improving the corrosion resistance and density of the coating to obtain nanocomposite, and grafting n-dodecanethiol on surface of nanocomposite through the Michael addition reaction to obtain superhydrophobic nanofillers; mixing the super-hydrophobic nano-filler with polyurethane evenly, and spraying it on the surface of the substrate to obtain wear-resistant super-hydrophobic long-term anti-corrosion coating, curing coating, and testing the electrochemical performance and super-hydrophobic performance. USE - Method is useful for preparing graphene oxide-polydopamine- ceric oxide/polyurethane wear-resistant superhydrophobic long-acting anti-corrosion coating. ADVANTAGE - The method improves dispersibility of graphene oxide and graft n-dodecyl mercaptan, improves the stability and wear resistance of the super-hydrophobic coating, is cheap and environmentally-friendly cerium oxide improves compactness and corrosion resistance of the coating through the synergistic effect of the super-hydrophobic surface and the corrosion inhibitor, the protective efficiency of the coating to the substrate reaches 99.9999%, soaking for 27 days, the coating impedance can reach 108 and coating has long-acting anti-corrosion ability. DESCRIPTION OF DRAWING(S) - The drawing shows a graphene oxide powder of the invention, graphene oxide-polydopamine powder, modified graphene oxide-polydopamine-cerium oxide powder of the infrared spectrum.