Method for preparing oil-soluble fluorinated graphene by using fluoride supercritical fluid

The invention belongs to the field of preparation of functional materials, and especially relates to a method for preparing oil-soluble fluorinated graphene by using a fluoride supercritical fluid. Graphite fluoride is placed in a high pressure reactor, an intercalation remover fluoride sulfur hexafluoride is added, a dispersant and an auxiliary intercalator which are lubricating oil base oil are added; all above substances undergo circulating flow under a supercritical pressure at a supercritical temperature, then the pressure is reduced to normal pressure, and the above process is repeated; and the fluoride intercalation remover quickly repeatedly gets in and out of a graphite fluoride interlayer in a penetrating manner, and the lubricating oil base oil enters the graphite fluoride interlayer as an auxiliary intercalation while expanding and cracking the graphite fluoride layer in order to finally prepare the oil-soluble fluorinated graphene material having a two-dimensional nano-thickness, wherein the dens