▎ 摘　　要

NOVELTY - Preparing graphene lubricant comprises centrifuging and separating raw graphene, pouring graphene powder into an acidic mixture, cooling to room temperature, introducing antioxidants, wax, lubricant fortifiers, and adsorbents to the base oil liquid, mixing with an ultrasonic stirring treatment device to obtain lubricant, (iv) dispersing graphene liquid with the lubricant by stirring, introducing a dispersant, stirring and mixing for 60-80 minutes, sequentially introducing a surface-modifying agent and a suspension stabilizer, and stirring for 90-120 minutes to obtain a stable mixed solution, (v) using an ultrasonic treatment device to ultrasonically mix the obtained mixed solution, and the ultrasonic time is 100-160 minutes, stirring and distilling in a stirring and distillation device with a pressure of 2-1 MPa and 50-80℃ for 60-80 minutes, cooling and recovering the distillate. The product after distillation is graphene lubricant. USE - The method is useful for preparing graphene lubricant. ADVANTAGE - The prepared graphene oil has good anti-wear and anti-friction effect, the mechanical energy loss caused by friction in the using process is greatly reduced, compared with the original traditional lubricating oil, it has outstanding anti-wear and antifriction effect, it effectively reduces the mechanical energy loss generated by the engine, it effectively protects the function of the engine; The preparation method graphene lubricating oil is simple, low cost, high efficiency, and easy popularization. DETAILED DESCRIPTION - Preparing graphene lubricant comprises (i) centrifuging and separating raw graphene, taking upper liquid, obtaining centrifuged graphene powder by low-temperature drying, mixing graphene powder with a defoaming agent and a graphene dispersant to form a mixture, dissolving in a heated solvent, stir evenly, filtering while hot, and vacuum heat dry filtrate, 2) pouring graphene powder from step 1) into an acidic mixture, cooling to room temperature, introducing 8-12 times its weight of anhydrous ethanol, stirring evenly, introducing calcium linoleate and methyl linoleate to the above mixture, heating to 80-90℃, and stirring and insulating for 3-5 hours, stirring evenly, rotary evaporate, and obtaining graphene liquid, (iii) introducing antioxidants, wax, lubricant fortifiers, and adsorbents to the base oil liquid, mixing with an ultrasonic stirring treatment device to obtain lubricant, (iv) dispersing graphene liquid with the lubricant by stirring, introducing a dispersant, stirring and mixing for 60-80 minutes, sequentially introducing a surface-modifying agent and a suspension stabilizer, and stirring for 90-120 minutes to obtain a stable mixed solution, (v) using an ultrasonic treatment device to ultrasonically mix the obtained mixed solution, and the ultrasonic time is 100-160 minutes, stirring and distilling in a stirring and distillation device with a pressure of 2-1 MPa and 50-80℃ for 60-80 minutes, cooling and recovering the distillate. The product after distillation is graphene lubricant.