▎ 摘　　要

NOVELTY - Graphene coated organosilicon composite material is claimed. The graphene coated organosilicon composite material is prepared by modifying porous silicon and graphene oxide. USE - The graphene coated organosilicon composite material is useful in lubricating oil (claimed). ADVANTAGE - The graphene coated organosilicon composite material provides lubricating oil which has improved anti-friction, anti-wear and self-repairing properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing graphene coated organosilicon composite material, comprising weighing certain amount of polyallylamine hydrochloride solution, soaking mesoporous silica in it, stirring magnetically for 0.5-2.5 hours, centrifuging, removing the supernatant, adding graphene oxide, stirring for 3-8 hours, adding it in a reaction kettle, reacting at 160-200 ℃ for 18-23 hours, filtering and centrifuging the product, washing with ethanol and deionized water, and freeze-drying to obtain the final product; Use of graphene coated organosilicon composite material in lubricating oil; and Use method of graphene coated organosilicon composite material in lubricating oil, comprising adding 70-90 pts. wt. base oil, 4-7 pts. wt. graphene coated organosilicon, 1-5 pts. wt. oleic acid, 0.2-2 pts. wt. triisobutylene sulfide, 3-8 pts. wt. perovskite, 1-5 pts. wt. silane coupling agent, and 0.1-3 pts. wt. auxiliary agent into a reaction kettle, mixing uniformly, heating at 90-120 ℃ at a rate of speed of 2-7 ℃/minute for 3-6 minutes, stirring for 0.5-3 hours, cooling to room temperature at a rate of 2-7 ℃/minute to obtain the lubricating oil.