▎ 摘　　要

NOVELTY - High-speed extreme pressure wear-resistant lubricating oil comprises 30-90 wt.% base oil, 5-50 wt.% nanoparticles, 0.001-0.1 wt.% graphene, 50-100 wt.% surface modifier and 5-50 wt.% additive. USE - Used as high-speed extreme pressure wear-resistant lubricating oil. ADVANTAGE - The method: has excellent stability and dispersibility, prevents oil film rupture, improves anti-wear performance and bearing ability; prolongs service life; reduces energy consumption; and is environmentally friendly. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the high-speed extreme pressure wear-resistant lubricating oil, comprising (i) preparing thiol-modified graphene and sulfhydryl-modified nanoparticles, (ii) adding dispersant to the obtained thiol-modified graphene and sulfhydryl-modified nanoparticles to the base oil, and stirring uniformly at 20-70 degrees C, and (iii) homogenizing the obtained mixture; and (2) Use of high-speed extreme pressure wear-resistant lubricating oil on a metal surface comprising extremely pressing high-speed extreme pressure wear-resistant lubricating oil to a metal surface under high-speed extreme pressure where the high-speed extreme pressure or working condition rotational speed is greater than 10000 rpm, the maximum cardless bite load PB value is 350N-1500 N and the sintering load PD value is 6000N-10000N.