▎ 摘　　要

NOVELTY - Preparation of graphene additive, involves preparing graphene by stripping a green solvent with a volume concentration of 1-50% formed by static action of an organic cation and an inorganic anion. USE - Preparation of graphene additive for industrial lubricating oil (claimed). ADVANTAGE - The method enables simple preparation of graphene additive, which effectively improves the dispersibility and friction wear performance of graphene in the lubricating oil, and provides lubricating oil mixture having excellent friction performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of the graphene additive for industrial lubricating oil, which involves adding 0.02-0.1 wt.%, preferably 0.02-0.08 wt.% graphene nanosheet powder to industrial lubricating oil, and ultrasonically processing at 100-500 W for not less than 15 minutes to obtain a graphene lubricating oil.