▎ 摘　　要

NOVELTY - A modified graphene oxide comprises 0.1-0.4 pts. wt. graphene oxide, 0.1-0.2 pts. wt dopamine hydrochloride, 0.3-0.6 pts. wt. tris hydroxymethyl aminomethane Tris buffer, 0.05-0.2 pts. wt. silane coupling agent, 0.1-0.25 pts. wt. zinc nitrate, 0.1-0.3 pts. wt. pH regulator and 50-150 pts. wt. de-ionized water, where the silane coupling agent is 3-amino propyl triethoxy silane. USE - Modified graphene oxide for preparing aqueous anti-corrosive paint (claimed). ADVANTAGE - The modified graphene oxide improves the agglomeration phenomenon of graphene oxide through the poly-dopamine grafted on the graphene oxide, enhancing the dispersibility, preparing aqueous anti-corrosion coating with crack zinc ion is released from the modified graphene oxide forming a layer of oxide film, at the crack it has the function of self-repairing, reducing the infiltration of the corrosion electrolyte. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a method for preparation of modified graphene oxide which involves dispersing the graphene oxide and trihydroxymethyl aminomethane Tris buffer in de-ionized water, then adding dopamine hydrochloride, silane coupling agent and pH regulator, reacting for 23-25hour at 55-65degrees Celsius to obtain the first reaction liquid, adding zinc nitrate to the first reaction liquid reacting for 1.5-2.5 hour at 55- 65 degrees Celsius to obtain the modified graphene oxide; (2) an aqueous anti-corrosive paint which comprises the modified graphene oxide; and (3) a method for preparation of aqueous anti-corrosive paint which involves mixing the aqueous epoxy emulsion, modified graphene oxide, dispersant, quick-drying agent, antifoaming agent, film-forming auxiliary agent, thickening agent and de-ionized water for mixing to obtain the first mixture mixing the first mixture with the curing agent to obtain the aqueous anti-corrosive paint. DESCRIPTION OF DRAWING(S) - The drawing shows an infrared spectrum. (Drawing includes non-English language text).