▎ 摘　　要

NOVELTY - Preparation of composite material involves (1) dispersing copper oxide powder in deionized water to form a suspension, (2) adding graphene oxide solution to the suspension, ultrasonically dispersing for 5-30 minutes, obtaining mixed suspension, (3) irradiating the mixed suspension with pulse laser under stirring, centrifuging and separating, drying the resulting precipitate. USE - Preparation of composite material used as additive in lubricant product (all claimed). ADVANTAGE - The preparation method is economical and environmentally-friendly. The prepared composite material exhibits excellent anti-wear and anti-friction properties during the friction process. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) composite material prepared by the above preparation method; and (2) lubricant product, which comprises lubricant and additive comprising the composite material.