▎ 摘　　要

NOVELTY - Preparing hyperbranched polymer grafted graphene modified epoxy resin coating comprises e.g. adding graphene oxide in de-ionized water, neutralizing by diluted hydrochloric acid, washing, centrifuging, drying to obtain carboxylated graphene, ultrasonically dispersing and mixing uniformly, then adding 2-chlorine acrylic ester and tetramethyl guanidine, and stirring to react, after finishing reaction, using methylene dichloride and saturated sodium chloride to wash, rotary steaming, vacuum drying, namely obtaining the ethyl acrylate grafted graphene, adding methanol into diethylenetriamine, stirring and mixing uniformly, using rotary evaporator to remove solvent, then heating and heating, carrying out polymerization reaction, cooling, washing, drying to obtain the amino-terminated hyperbranched polymer grafted graphene. USE - The method is useful for preparing hyperbranched polymer grafted graphene modified epoxy resin coating. ADVANTAGE - The hyperbranched polymer grafted graphene modified epoxy resin coating: has strong shielding effect and chemical corrosion resistance, improves the corrosion resistance of the substrate, has an ultra-long branched flexible long chain, which can improve the toughness of the substrate with amino-terminated structure; uses the epoxy resin curing process, has good cross-linking effect, promotes curing; contains nitrogen-containing heterocycle contained in the pyridine; and lone pair electrons on the nitrogen atom in the heterocycle can form corresponding coordination bond with the empty track of the iron atom; can forms the corresponding protection film on the metal surface, thus prevents the corrosion after mixing the epoxy resin matrix; and has excellent mechanical property and corrosion resistance. DETAILED DESCRIPTION - Preparing hyperbranched polymer grafted graphene modified epoxy resin coating comprises (i) adding 0.01-0.02 pts. wt. graphene oxide in 0.8-1.2 pts. wt. de-ionized water, 0.4-0.5 pts. wt. sodium hydroxide and 0.42-0.48 pts. wt. chloroaceticacid for stirring reaction, after finishing reaction, neutralizing by diluted hydrochloric acid, washing, centrifuging, drying to obtain carboxylatedgraphene; (ii) adding 0.08-0.12 pts. wt. carboxylated graphene prepared in the step (i) into 0.6-1.2 pts. wt. N,N-dimethyl formamide, ultrasonically dispersing and mixing uniformly, then adding 0.2-0.33 pts. wt. 2-chlorine acrylic ester and 0.15-0.25 pts. wt. tetramethyl guanidine, and stirring to react, after finishing reaction, using methylene dichloride and saturated sodium chloride to wash, rotary steaming, vacuum drying, namely obtaining the ethyl acrylate grafted graphene; (iii) adding 3-5.5 pts. wt. methanol into 0.32-0.45 pts. wt. diethylenetriamine, stirring and mixing uniformly, then adding 0.22-0.35 pts. wt. methyl acrylate and 0.08-0.15 pts. wt. ethyl acrylate grafted graphene prepared in step (ii) to react, after finishing reaction, using rotary evaporator to remove solvent, then heating and heating, carrying out polymerization reaction, cooling, washing, drying to obtain the amino-terminated hyperbranched polymer grafted graphene; (iv) adding 0.08-0.12 pts. wt. hyperbranched polymer grafted graphene prepared in the step (iii) into 1-2 pts. wt. dichloromethane, ultrasonically dispersing and mixing uniformly, then adding 0.004-0.012 pts. wt. 2-pyridineformic acid, stirring and mixing uniformly, then placing the obtained mixed solution in the nitrogen atmosphere to react, after finishing reaction, centrifuging, washing, drying to obtain pyridylhyperbranched polymer grafted graphene; (v) preparing pyridyl hyperbranched polymer prepared in step (iv) grafted with 0.02-0.3 pts. wt. graphene, 120-200 pts. wt. acetone, 10 pts. wt. epoxy resin, 0.05-0.15 pts. wt. leveling agent polydimethylsiloxane, 0.04-0.12 pts. wt. defoamer nonylphenol polyoxyethylene ether and 0.15-0.25 pts. wt. pigment titanium dioxide, stirring and uniformly mixing. An INDEPENDENT CLAIM is also included for hyperbranched polymer grafted graphene modified epoxy resin coating, is prepared by the preparation method.