▎ 摘　　要

NOVELTY - Lubricating oil comprises compounding additives and pig fat, where the compounding additive is composed of silane coupling agent, graphene and copper nanowires, the mass ratio of graphene to copper nanowires is 1:0.5-2, the ratio of the mass of the graphene to volume of silane coupling agent is 1 mg:0.1-3.5 ml, the diameter of the copper nanowire is 20-50 nm, and the length of the copper nanowires are 10-900 nm. USE - The lubricating oil is useful for cold extrusion (claimed). ADVANTAGE - The lubricating oil: is environmentally friendly; has low cost, high temperature resistant, wear-resistant antifriction performance, self-repairing effect and improved lubricating performance; and can be decompose at 350 degrees C. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing lubricating oil, comprising (a) dissolving silane coupling agent in water to obtain silane coupling agent solution, (b) adding graphene and copper nanowires to a silane coupling agent solution, ultrasonically dispersion and stirring to obtain intermediate solution, (c) drying the intermediate solution to obtain compounding additive, and (d) mixing the additive with pig fat to obtain final product.