▎ 摘　　要

NOVELTY - Preparation of graphene-boron carbon nanosheet comprises mixing boron, chitosan and dicyandiamide, heating, and performing first self-assembly to obtain boron carbon nanosheet; and mixing boron carbon nanosheet with graphene oxide and water, second heating, and performing second self-assembly to obtain graphene-boron carbon nanosheet. The graphene-boron carbon nanosheet has sheet structure which is stacked layer by layer. USE - The method is used for preparing graphene-boron carbon nanosheet in anticorrosive paint (claimed). ADVANTAGE - The anticorrosive coating has water resistance of 1033-1144 hours, acid resistance up to 2124-2564 hours, alkali resistance up to 2754-3165 hours, humidity and heat resistance up to 1316-1645 hours, salt spray resistance up to 3321-4567 hours, impact resistance of 70-81 cm, and performance significantly higher than the national standard. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) doped graphene-boron carbon nanosheet anticorrosive paint comprising 2-10 pts. wt. graphene-boron carbon nanosheet, 10-30 pts. wt. zinc acid, 5-20 pts. wt. zinc sulfate, 5-25 pts. wt. dispersant, 1-2 pts. wt. defoamer, 0.2-0.5 pt. wt. thickener, 0.1-0.5 pt. wt. 1-5 pts. wt. leveling agent, 5-30 pts. wt. hardener, and 3-10 pts. wt. water; and (2) anticorrosive comprising mixing graphene-boroncarbon nanosheet with dispersant, defoamer and thickener; mixing ith acrylic acid modified alkyd resin, pigment, zinc sulfate, leveling agent and water; and mixing refabricated coating and curing agent.