▎ 摘　　要

NOVELTY - A three-layer anticorrosive high-strength coating comprises a conductive base layer, an elastic middle layer and a surface nano-modified layer. The conductive base layer, elastic intermediate layer and surface nano-modified layer are respectively obtained from conductive base powder, elastic intermediate layer powder and surface nano-modified layer powder through electrostatic spraying and heat treatment. The conductive base layer powder includes polyaniline modified graphene. The elastic intermediate layer powder includes liquid crystal microcapsules. The surface layer nano-modified layer powder includes siloxane-modified nano silica. USE - Three-layer anticorrosive high-strength coating. ADVANTAGE - The method enables formation of three-layer coating with excellent anticorrosive property and high strength. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of three-layer anticorrosive high-strength coating, which involves (i) adding graphene to the alkaline solution of phenylenediamine, heating and stirring the reaction, adjusting the system to acidity, adding aniline and initiator, stirring the reaction at low temperature, filtering and washing freeze-dry to obtain polyaniline modified graphene, adding polyaniline modified graphene to epoxy resin powder coating to prepare conductive base layer powder, (ii) adding triglycidyl isocyanurate curing agent to the polymethyl methacrylate solution containing liquid crystals, stirring evenly at room temperature, and adding sodium dodecylbenzene sulfonate aqueous solution, quickly stirring and emulsifying, heating under reduced pressure to evaporate the solvent to obtain liquid crystal microcapsules, and adding the liquid crystal microcapsules to epoxy resin powder coating to prepare elastic intermediate layer powder, (iii) adding the siloxane-modified nano-silica particles into the epoxy resin powder coating to prepare surface layer nano-modified layer powder, and (iv) after cleaning the surface of the substrate, electrostatically spraying and heat treating the conductive base layer powder prepared in step (i), the elastic intermediate layer powder prepared in step (ii) and the surface nano-modified layer powder prepared in step (iii).