Method for preparing nano copper lubricating oil additive

The present invention provides a method of preparing nanometer copper lubricant additive by a high gravity technology. Copper salt solution and reducer solution are processed for the liquid phase reduction reaction of cupric salt inside a high gravity machine, the solution after the reaction and extractant are mixed inside a static mixer and then stirred inside a reaction vessel for complete mixing reaction and the surface modification during the process of extraction and to be processed for standing and being layered, oil phase at the upper layer is obtained for pressure reduction and distillation to obtain a final product. The reaction speed of the method of the present invention is fast; the repeat reproducibility of the products between batches is good; the nanometer copper lubricant additive is prepared directly by a wet method, which does not require vacuum drying for preparing for nanometer copper dry powder, avoids the occurrence of agglomeration, simplifies the technical flow and has high product qua