▎ 摘　　要

NOVELTY - Hydraulic oil composition comprises 79.998-97.998 wt.% base oil, 2-20 wt.% composite additive and 20 ppm graphene. USE - Hydraulic oil composition. ADVANTAGE - The hydraulic oil composition has no tackifying agent, solid lubricating material and solvent, conductivity, and good lubricity, biocompatibility, stability, emulsion resistance, foam resistance, corrosion resistance and rust resistance, prevents static aggregation, and better meets the requirement of hydraulic station lubrication.