▎ 摘　　要

NOVELTY - An ion-containing liquid comprises lubricating oil composition containing modified copper nanoparticles and graphene. The modified copper nanoparticles are prepared by adding mercaptan, cationic surfactant, corrosion inhibitor and complexing agent to deionized water, ultrasonically dispersing, centrifuging and grinding. The ion-containing liquid is prepared by stirring ionic liquid, modified copper nanoparticles, graphene, detergent, dispersant, preservative, oily agent, antioxidant, viscosity index improver, rust inhibitor, depressant, antifoaming agent and base oil. USE - Ion-containing liquid is used in industrial machinery, auto industry, precision instrument, power industry, metallurgical industry, mold manufacturing industry, steel industry and industrial machine tool manufacturing industry. ADVANTAGE - The ion-containing liquid is prepared with low equipment investment and energy consumption by simple and environmentally-friendly method. DETAILED DESCRIPTION - An ion-containing liquid comprises lubricating oil composition containing modified copper nanoparticles and graphene. The modified copper nanoparticles are prepared by adding mercaptan, cationic surfactant, corrosion inhibitor and complexing agent to deionized water, ultrasonically dispersing with power of 30 W to 15 kW and frequency of 20 kHz to 1 MHz, stirring for 0.1-1 hours, adding copper nanoparticles, ultrasonically dispersing at frequency of 20 kHz to 1 MHz and power of 30 W to 15 kW, stirring for 0.1-20 hours, centrifuging, separating, washing with deionized water, centrifuging, vacuum drying, grinding and screening. The ion-containing liquid is prepared by stirring ionic liquid, modified copper nanoparticles, graphene, detergent, dispersant, preservative, extreme-pressure and anti-wear agent, oily agent, antioxidant, viscosity index improver, rust inhibitor, depressant, antifoaming agent and base oil. The mass ratio of copper nanoparticles, mercaptan, cationic surfactant, corrosion inhibitor, deionized water and complexing agent is 0.001-75%:0.00001-80%:0.001-30%:0.001-20%:0.001-15%:0.001-98%. The mass ratio of ionic liquid, modified copper nanoparticles, graphene, detergent, dispersant, preservative, extreme-pressure and anti-wear agent, oily agent, antioxidant, viscosity index improver, rust inhibitor, pour point depressant, antifoaming agent and base oil is 0.00001-80%:0.001-60%:0.001-60%:0.001-30%:0.001-20%:0.001-10%:0.001-15%:0.001-15%:0.001-15%:0.001-30%:0.001-10%:0.001-15%:0.001-10%:0.001-98%. An INDEPENDENT CLAIM is included for preparation of ion-containing liquid.