▎ 摘　　要

NOVELTY - Modified lubricant, comprises: lubricant grease; and many nano-graphite plates dispersed thoroughly in the lubricant grease, where the content of the nano-graphite plates is 0.0001-10 wt.% in the lubricant grease. Each nano-graphite plate has a length or a width of 1-100 mu m, and a thickness of 10-100 nm, and each nano-graphite plate has n graphene layers stacked together and at least one surface modifying layer disposed on the top and/or bottom of the nano-graphite plates, where n is 30-300. USE - Used as a modified lubricant. ADVANTAGE - The modified lubricant has an advanced thermal conductivity of greater than 0.2 W/mK (claimed). DETAILED DESCRIPTION - Modified lubricant, comprises: lubricant grease; and many nano-graphite plates dispersed thoroughly in the lubricant grease, where the content of the nano-graphite plates is 0.0001-10 wt.% in the lubricant grease. Each nano-graphite plate has a length or a width of 1-100 mu m, and a thickness of 10-100 nm, and each nano-graphite plate has n graphene layers stacked together and at least one surface modifying layer disposed on the top and/or bottom of the nano-graphite plates, where n is 30-300. The surface modifying layer has a surface modifying agent which includes at least two functional groups located at two ends of the surface modifying agent, where one of the two functional groups is chemically bonded with certain organic functional group remaining on the surface of the nano-graphite plate, and the other of the two functional groups forms the functional surface of the nano-graphite plate, where the coupling agent is substituted metal compounds of formula (I). M1 = metal; R1 = hydrophilic functional group; R2 = hydrophobic functional group; x = 0-6; and y, z = 1-20.