▎ 摘　　要

NOVELTY - Method for preparing composite coating based on interface regulation, involves (a) applying first voltage to initial graphite paper electrode in first sulfuric acid solution, (b) applying second voltage to flexible graphite paper electrode in second sulfuric acid solution, (c) adding aniline monomer to graphene oxide solution, and dripping oxidizing agent, (d) using X-ray photoelectron spectroscopy, Raman and fourier-transform infrared spectroscopy analysis method for determining the structure, composition and grafting rate of polyaniline-graphene oxide composite material, evaluating the dispersion stability of different polyaniline-graphene oxide composite materials using precipitation experiment, determining reaction condition using selecting polyaniline-graphene oxide composite material, and (d) adding polyaniline-graphene oxide composite material with excellent dispersion stability to aqueous epoxy resin to obtain composite coating, and coating. USE - The method is used for preparing composite coating based on interface regulation used for metal anticorrosion (all claimed). ADVANTAGE - The method clarifies the correlation between structure and performance of polyaniline-graphene oxide composite material from control of structure of polyaniline and graphene oxide, and the prepared polyaniline-graphene oxide composite coating has stable dispersion, realizes the controllable preparation of high-efficiency anticorrosive graphene oxide-based composite coating, and ensures excellent anticorrosion effect and high-efficiency protection of metal substrate. DETAILED DESCRIPTION - Method for preparing composite coating based on interface regulation, involves (a) applying first voltage to initial graphite paper electrode in first sulfuric acid solution to obtain flexible graphite paper, (b) applying second voltage to flexible graphite paper electrode in second sulfuric acid solution to obtain graphene oxide solution, (c) adding aniline monomer to graphene oxide solution, and dripping oxidizing agent under condition of ice-water bath stirring to obtain polyaniline-graphene oxide composite material, (d) using X-ray photoelectron spectroscopy, Raman and fourier-transform infrared spectroscopy analysis method for determining the structure, composition and grafting rate of polyaniline-graphene oxide composite material, evaluating the dispersion stability of different polyaniline-graphene oxide composite materials using precipitation experiment, determining reaction condition using selecting polyaniline-graphene oxide composite material with excellent dispersion stability, and (d) adding polyaniline-graphene oxide composite material with excellent dispersion stability to aqueous epoxy resin to obtain composite coating, and coating the composite coating to film to obtain composite coating.