▎ 摘　　要

NOVELTY - Production of lubricating oil, involves dissolving hexagonal boron nitride nanopowders in N-methylpyrrolidone to obtain hexagonal boron nitride nanosheets, ultrasonically dispersing the hexagonal boron nitride nanosheets in xylene, toluene or ethanol, adding trioctylamine, refluxing in a nitrogen atmosphere, filtering to obtain crude product hexagonal boron nitride-trioctylamine, continuously drying with toluene or ethanol to obtain hexagonal boron nitride-trioctylamine antiwear agent, mixing with graphene, dispersant, emulsifier and base oil to obtain final product. USE - Method for producing lubricating oil (claimed). ADVANTAGE - The method enables production of lubricating oil with reduced friction coefficient and improved wear resistance. DETAILED DESCRIPTION - Method for producing lubricating oil, involves dissolving hexagonal boron nitride nanopowders in N-methylpyrrolidone, ultrasonically processing to obtain hexagonal boron nitride nanosheets, separating supernatant of the hexagonal boron nitride nanopowder, washing with ethanol or xylene, drying, ultrasonically dispersing the hexagonal boron nitride nanosheets in xylene, toluene or ethanol, adding trioctylamine, refluxing in a nitrogen atmosphere for 60-80 hours, filtering under reduced pressure to obtain crude product hexagonal boron nitride-trioctylamine, continuously drying with toluene or ethanol to obtain hexagonal boron nitride-trioctylamine antiwear agent, mixing hexagonal boron nitride-trioctylamine antiwear agent, graphene, dispersant, emulsifier and base oil, and blending to obtain final product.