▎ 摘　　要

NOVELTY - Preparing cyclodextrin modified graphene oxide composite coating involves mixing the cyclodextrin solution and the graphene oxide solution, adjusting the pH to weakly alkaline to obtain first product, heating obtained first product at 70-80℃ for 3.5-4.5 hours to obtain a black stable solution, that is second product, washing centrifugally obtained second product with deionized water to obtain cyclodextrin-modified graphene oxide, which is denoted as GC, dissolving cerium nitrate hexahydrate in deionized water, adding obtained GC solution, mixing to obtain third product, adjusting the pH of obtained third product to weak alkaline, reacting at 150-200℃ for 20-30 hours to obtain fourth product, washing obtained fourth product with 99.5% ethanol and deionized water for multiple times to make the precipitate appear neutral, performing vacuum drying to obtain GCC, and mixing obtained GCC with epoxy-modified polyurethane resin (EP-PU) to obtain GCC/EP-PU composite coating. USE - Method for preparing cyclodextrin modified graphene oxide composite coating. ADVANTAGE - The prepared cyclodextrin modified graphene oxide composite coating has stronger corrosion inhibition activity and self-repairing performance.