▎ 摘　　要

NOVELTY - Preparation of anticorrosion antifouling anti-protein aqueous polyurea grafted graphene coating material includes mixing dimethylaminoethyl methacrylate, mercaptopropanediol, azobisisobutyronitrile and tetrahydrofuran by stirring, fully reacting under nitrogen protection, liquid nitrogen cooling to stop the reaction, removing the tetrahydrofuran solvent, adding n-hexane, stirring uniformly, centrifuging and drying to obtain anti-protein material, adding crystalline flake graphite into the mixture of potassium nitrate and concentrated sulfuric acid, ultrasonically mixing uniformly, fully reacting in ice water bath, stirring, slowly adding potassium permanganate under high speed stirring, slowly raising the temperature, adding distilled water, reacting, adding distilled water and hydrogen peroxide, fully reacting, and centrifugally washing using distilled water. USE - Preparation of anticorrosion antifouling anti-protein aqueous polyurea grafted graphene coating material (claimed) used as marine antifouling paint. ADVANTAGE - The method uses aqueous polyurea, which is environment-friendly and non-flammable and has easy purification, low cost, no toxicity and no irritation. The anticorrosion antifouling anti-protein aqueous polyurea grafted graphene coating material has excellent mechanical property and antibacterial effect, prevents marine biofouling on ship surface by introducing the anti-protein unit, improving the service life of ship, and is safe to environment. DETAILED DESCRIPTION - Preparation of anticorrosion antifouling anti-protein aqueous polyurea grafted graphene coating material comprises mixing dimethylaminoethyl methacrylate, mercaptopropanediol, azobisisobutyronitrile and tetrahydrofuran at 7.85 g:1.109 g:0.0785 g:20 ml ratio by stirring, fully reacting at 70 degrees C under nitrogen protection, liquid nitrogen cooling to stop the reaction, removing the tetrahydrofuran solvent, adding n-hexane, stirring uniformly, centrifuging and drying to obtain anti-protein material, adding crystalline flake graphite into the mixture of potassium nitrate and concentrated sulfuric acid, ultrasonically mixing uniformly, fully reacting in ice water bath, stirring, slowly adding potassium permanganate at 0 degrees C under high speed stirring, slowly raising the temperature, adding distilled water, reacting at 65 degrees C, adding distilled water and hydrogen peroxide, fully reacting, centrifugally washing using distilled water until pH 7, adding sodium dodecyl benzene sulfonate, ultrasonically mixing uniformly to obtain graphene oxide gel, preparing the resulting graphene oxide gel into 70 mass% suspension, vigorously stirring and adding hydrazine hydrate under 80 degrees C water bath, cooling to room temperature, filtering, washing for multiple times with absolute ethyl alcohol, drying, obtaining pure reduced graphene, adding dimethylformamide, 2,2-dihydroxybenzaldehyde, N-glycine and the resulting reduced graphene into a container, ultrasonically mixing uniformly at 120 degrees C constant temperature, stirring and refluxing, hot centrifuging, repeatedly washing with absolute ethyl alcohol, drying, obtaining hydroxylated graphene, adding crystalline flake graphite, potassium nitrate, concentrated sulfuric acid, potassium permanganate, distilled water and hydrogen peroxide at 1.0 g:1.0 g:40 ml:6.0 g:180 ml:6 ml ratio, adding diphenylmethane diisocyanate, 2,2-dimethylolpropionic acid and acetone into a container, under nitrogen protection, raising the temperature to 45 degrees C, constant temperature stirring and fully reacting, slowly adding polyetheramine D2000 solution, fully reacting, adding polyetheramine D230, chain extension reacting, obtaining material C, where the ratio of diphenylmethane diisocyanate, 2,2-dimethylolpropionic acid, polyetheramine D2000, polyetheramine D230, and acetone is 1.5 g:0.12 g:1.7 g:0.5 g:15 ml, adding the anti-protein material in acetone, slowly adding into material C, 70 degrees C constant temperature stirring and reacting, adding the hydroxylated graphene, reacting, reducing the temperature to 40 degrees C, adding triethylamine, conducting neutralization reaction under high speed stirring, slowly dropping deionized water under high shear force emulsification, standing and defoaming, and removing the solvent acetone. The ratio of anti-protein material, hydroxylated graphene, deionized water, triethylamine and acetone is 0.2 g:0.05 g:5.4 ml:9.5 mg:5 ml. An INDEPENDENT CLAIM is included for anticorrosion antifouling anti-protein aqueous polyurea grafted graphene coating material.