▎ 摘　　要

NOVELTY - Graphene-containing nanomaterial comprises graphene and nano-graphite sheets. The thickness of the graphite nano sheet is less than or equal to 100 nm. USE - Used as graphene-containing nanomaterial. ADVANTAGE - The method greatly improves the preparation efficiency of graphene and nano-graphite sheets, and does not generate environmental pollution, effectively supplements the content of the above-mentioned components in the lubricating grease, delays the loss of the lubricating grease, and increases its service life. The nanomaterial is not easy to cause damage to the two-dimensional structure of graphene and nano-graphite sheets and has high quality. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing a graphene-containing nanomaterial, comprising (i) heating a mixture containing expanded graphite and a halogen salt under vacuum or an inert atmosphere to obtain a solid intermediate product I containing intercalated graphite, mixing the intermediate product I with water to obtain a suspension I, filtering to obtain a solid I and a filtered solution, and obtaining the freezing point T1 of the filtered solution, where the halogen salt is halogen sodium salt, halogen potassium salt, halogen calcium salt, halogen calcium salt, and/or halogen zinc salt, (ii) mixing the solid I with the halogen salt solution, ball milling at temperature t1, heating and thawing to obtain liquid intermediate product II, where the freezing point of the halogen salt solution is T2, and the T112, (iii) diluting the liquid intermediate product II with V volumes of water to obtain a suspension II, allowing to stand and settling, removing V volumes of the supernatant to obtain a suspension III, ball milling at a temperature of t2 and heat to thaw to obtain Liquid intermediate product III, where the freezing point of the suspension II is T3, and the T123, (iv) repeating step (iii), and (v) washing and drying the liquid intermediate product; Composite aluminum-based grease, comprising base oil, aluminum-containing compound and nano-material containing graphene, where the mass fraction of the nanometer material containing graphene is 0.1-20 wt.%; and Preparing composite aluminum-based grease, comprising saponifying the mixture containing base oil, aluminum-containing compound, graphene-containing nano-material, primary stearic acid, and benzoic acid, heating and dehydrating, adding base oil to cool, and grinding.