▎ 摘　　要

NOVELTY - Graphene and nano titanium dioxide composite coating preparation involves mixing redispersible graphene powder and film-forming resin to obtain a mixture, and then adding modified nano titanium dioxide to the obtained mixture. The remaining film-forming resin is added to the ground product under mixing. The re-dispersed graphene powder is a powder obtained by drying a dispersion liquid in which graphene is dispersed using graphene as a raw material and polyaniline oligomer and polyvinylpyrrolidone as a dispersant. The modified nano titanium dioxide is a powder obtained by supporting nano titanium dioxide on a titanium dioxide, where the titanium dioxide has a particle diameter of 8-100 mu m. USE - Method for preparing graphene and nano titanium dioxide composite coating used in external anticorrosion in marine environment (claimed). ADVANTAGE - The method prepares the graphene and nano titanium dioxide composite coating in a simple, cost-effective and eco-friendly manner with excellent anticorrosive performance.