▎ 摘　　要

NOVELTY - Preparing graphene corrosion-resistant coating involves using hydrofluoric acid to etch beta carbon nitride ceramic particles, and and chemical vapor growth method to grow graphene on the beta carbon nitride ceramic particles in situ to obtain beta carbon nitride/graphene corrosion-resistant filler, and then mixing the corrosion-resistant filler with solvent, resin monomer, initiator, and coating base material to prepare corrosion-resistant coating. The hydrofluoric acid solution with a concentration of 5-10 wt.% and beta carbon nitride ceramic particles are uniformly mixed in a reactor with a polytetrafluoroethylene lining at a mass ratio of 3:1, and stirred at room temperature for 30-60 minutes, and then taken out beta carbon nitride ceramic particles are thoroughly washed with deionized water and dried to obtain beta carbon nitride ceramic particles carrier. USE - Method for preparing graphene corrosion-resistant coating. ADVANTAGE - The method enables to prepare graphene corrosion-resistant coating, which has long shelf life, improves the dispersibility of beta carbon nitride/ graphene, prevents poly-beta carbon nitride/graphene from agglomeration in the coating, and prolongs the corrosion resistance of the coating. DETAILED DESCRIPTION - Preparing graphene corrosion-resistant coating involves using hydrofluoric acid to etch beta carbon nitride ceramic particles, and and chemical vapor growth method to grow graphene on the beta carbon nitride ceramic particles in situ to obtain beta carbon nitride/graphene corrosion-resistant filler, and then mixing the corrosion-resistant filler with solvent, resin monomer, initiator, and coating base material to prepare corrosion-resistant coating. The hydrofluoric acid solution with a concentration of 5-10 wt.% and beta carbon nitride ceramic particles are uniformly mixed in a reactor with a polytetrafluoroethylene lining at a mass ratio of 3:1, and stirred at room temperature for 30-60 minutes, and then taken out beta carbon nitride ceramic particles are thoroughly washed with deionized water and dried to obtain beta carbon nitride ceramic particles carrier. The beta carbon nitride ceramic particle carrier is spreaded flat on the surface of the quartz plate, and cover the surface of the beta carbon nitride ceramic particle carrier with a layer of graphite powder, and placing the quartz plate in the center of the tube furnace under a mixed flow of nitrogen and oxygen heating to 700-1100 degrees C for 30-60 minutes, then stopping the oxygen supply and keep it warm for 5-10 minutes under nitrogen flow, further stopping the introduction of nitrogen, introducing methane gas, stopping the heat preservation under the methane flow, and naturally cooling to room temperature to obtain beta carbon nitride/graphene corrosion-resistant packing. 10-20 pts. wt. Beta carbon nitride/graphene corrosion-resistant filler in 40-50 pts. wt. of solvent according to the proportion of pts. wt. by mass, add 20-40 pts. wt. of resin monomer, and stirring at high speed to coat the resin monomer on the surface of beta carbon nitride/graphene corrosion-resistant packing and 3-5 pts. wt. initiator and stirring at high speed to cause the resin monomer to polymerize on the surface of beta carbon nitride/graphene corrosion-resistant filler, further adding 300-500 pts. wt. coating base material, stirring at high speed, and mix uniformly to prepare graphene corrosion-resistant coating.