▎ 摘　　要

NOVELTY - Preparing marine anti-corrosion coating, comprises (i) processing graphene pretreatment (a) joining graphene and nitric acid in there-necked flask, ultrasonically dispersing, removing oxygen, heating, stirring, cooling, filtering, washing, and vacuum-drying to obtain product A, (b) taking product A and thionyl chloride, ultrasonically dispersing, removing oxygen from reaction system, heating, and reacting with stirring, removing excess thionyl chloride under reduced pressure, adding ethylene glycol solution under protection of argon, heating, cooling, filtering, washing, and vacuum-drying to obtain product B, (c) adding product B, copper(I) chloride, pentamethyldiethylenetriamine, tert-butyl methacrylate, and trifluoroacetic acid into flask, stirring, washing, and obtaining processed graphene after centrifugation, and (ii) mixing xylene, n-butanol, and treating graphene in beaker, ultrasonically oscillating, and mixing epoxy resin E-44, curing agent, and diluent and pigments. USE - The method is useful for preparing marine anti-corrosive paint. ADVANTAGE - The method solves the problem graphene the existing modified anti-corrosive paint in the preparation process, there is graphene of difficult dispersion condition, cannot obtain large interlayer graphene, so as to affect the problem of the final coating quality. The method pre-treats the graphene, which solves the problems graphene the dispersion is difficult, using large inter-layer distance as graphene filler is added to the anti corrosion coating, prevents the corrosion medium diffusion in the coating, enhances the inner bonding force and toughness of the coating compared with the traditional coating corrosion resistance, soaking resistance, bonding force, and so on performance is obviously improved. DETAILED DESCRIPTION - Preparing marine anti-corrosion coating, comprises (i) processing graphene pretreatment (a) joining 200mg graphene and 20ml nitric acid in the 50ml there-necked flask, and ultrasonically dispersing the mixture of the two for 25-35 minutes, removing oxygen from the reaction system, heating in an oil bath at 95-105℃, and stirring for 18-30 hours, cooling to room temperature, filtering, and washing repeatedly with deionized water until the filtrate is neutral, vacuum-drying the filtered precipitate at 48-52℃ to obtain product A, (b) taking 100 mg of product A and 20 ml of thionyl chloride and adding them to a 50 ml three-necked flask, and ultrasonically dispersing their mixture for 25-35 minutes, removing oxygen from the reaction system, heating it with an oil bath at 60-70℃, and reacting with stirring for 18-30 hours, removing excess thionyl chloride under reduced pressure, then add 20ml of ethylene glycol solution under the protection of argon, and heating up to 118-125℃, stirring for 20-28 hours, cooling to room temperature, filtering, and washing with deionized water until the filtrate is neutral, vacuum-drying filtered precipitate at 48-52℃ to obtain product B, and (c) adding 50mg of product B, 10mg copper(I) chloride, 0.02ml of pentamethyldiethylenetriamine, 1.5ml of tert-butyl methacrylate, and 0.2ml of trifluoroacetic acid into the flask, and stirring downward under argon protection at 30℃ for 12 hours, ultrasonically washing, and obtaining processed graphene after centrifugation, and (ii) preparing marine anti-corrosion coating by evenly mixing 0.6g of xylene, 1.4g of n-butanol, and 20mg of treated graphene in a beaker, and performing ultrasonic oscillation for 10 minutes to obtain a diluent, and taking epoxy resin E-44, curing agent, and diluent and pigments, using magnetic stirring device to stirring at a speed of 250-350 revolutions per minute (rpm) for 8-15 minutes for mixing to obtain a marine anti-corrosion coating