▎ 摘　　要

NOVELTY - Preparing environmentally friendly graphene anti-corrosive paint comprises (i) swelling a aqueous carrier resin into the solution in a supercritical carbon dioxide resin swelling system, and taking the aqueous carrier resin (ii) agglomerating graphene, exfoliating graphene powder, spraying supercritical carbon dioxide resin solution, atomizing, covering the graphene surface, subjecting to rapid gasification, coating remaining resin on the surface of the graphene, recycling the carbon dioxide gas, and (iii) dispersing e.g water, graphite composite particle and dispersant. USE - The method is useful for preparing environmentally friendly graphene anti-corrosive paint. ADVANTAGE - The method is simple, and environmentally friendly. DETAILED DESCRIPTION - Preparing environmentally friendly graphene anti-corrosive paint comprises (i) preparing a two-stage compressor and a cooling system for carbon dioxide with a resin solution, swelling a aqueous carrier resin into the solution in a supercritical carbon dioxide resin swelling system according to the designed proportion, and taking the aqueous carrier resin from at least one of polyvinyl alcohol, water-soluble epoxy resin, aqueous polyurethane, and aqueous acrylic resin according to the designed proportion, where the mass ratio of supercritical carbon dioxide to resin is 1:0.05-0.2, (ii) opening a inlet port of the carbon dioxide heater and the exhaust gas hole of the fluidized bed host, loading into graphene, driving graphene under the airflow, agglomerating graphene, incompletely exfoliating the graphene powder under the impact of airflow, completely dispersing in the air flow in the fluidized bed, turning on a spraying device in the fluidized bed, spraying the supercritical carbon dioxide resin solution into the graphene fluid through a high pressure nozzle, electrostatically atomizing, quickly dispersing the resin solution into fine droplets under the strong impact force and the electrostatic interaction, quickly covering the graphene surface, where the carbon dioxide in the droplets changes suddenly due to the pressure, subjecting to rapid gasification, uniformly coating the remaining resin on the surface of the graphene to obtain graphene composite particles, connecting the inlet and exhaust holes of the fluidized bed device with the carbon dioxide device, completely recycling the carbon dioxide gas, where the inlet pressure is 0.5-3 MPa, and the exhaust pressure is 0.2-2 MPa, and (iii) uniformly dispersing 22-28 pts. wt. water, 4-10 pts. wt. graphite composite particle, 0.2-0.5 pts. wt. dispersant, 1-4 pts. wt. antifoaming agent, 1.5-2.5 pts. wt. propanediol, 30-40 pts. wt. inorganic filler, 19-25 pts. wt. resin and 1-3 pts. wt. flatting agent into a viscolizer, where the dispersant is tributyl phosphate, primary amine, secondary amine or tertiary amine, the antifoaming agent is styrenic block copolymer, the inorganic filler is talc powder, mica powder, light calcium carbonate, calcined kaolin, titanium oxide, zinc oxide or white carbon, the resin is polyvinyl alcohol, water-soluble epoxy resin, aqueous polyurethane or aqueous acrylic resin, and the flatting agent is acrylic acid flatting agent.