▎ 摘　　要

NOVELTY - Economical and practical aqueous based epoxy graphene bottom-surface-in-one coating comprises 100 pts. wt. aqueous based epoxy resin, 50-80 pts. wt. curing agent, 0.1-0.5 pts. wt. modified graphene oxide and 0.2-1 pts. wt. nano-alumina. The coating is prepared by modifying graphene into graphene oxide by a modifier, adding into a mixture of surfactant and aqueous epoxy resin solvent, modifying by nano-alumina to form a graphene oxide suspension and mixing with aqueous -based epoxy resin made of resin. USE - Used as economical and practical aqueous -based epoxy graphene bottom-surface-in-one coating. ADVANTAGE - The coating: has excellent corrosion resistance and weather resistance; prolongs the service life of harsh working condition and is economical and practical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for Preparing economical and practical aqueous-based epoxy graphene bottom-surface-in-one coating comprising preparing the graphene oxide by modifying the graphene oxide, modifying the graphene oxide by using modifying agent to the graphene oxide for amino grafting modification treatment: dissolving graphene oxide and modifier in aqueousbased on the proportion after completely dissolving, adding water to dilute the modified agent solution to make the modified agent aqueoussolution and graphene oxide aqueous solution according to mass ratio of 4-6: 1 solution, reacting for 0.9-1.1 hour at 78-82℃ constant temperature water bath environment, drying at constant temperature of 58-62℃ and drying the water to obtain the modified graphene oxide.