Molybdenum disulfide nano lubricating oil capable of stably existing and preparation method of molybdenum disulfide nano lubricating oil

Abstract

The invention discloses molybdenum disulfide nano lubricating oil capable of stably existing and a preparation method thereof, and the molybdenum disulfide nano lubricating oil is composed of molybdenum disulfide powder, a dispersant mixed solution and base oil; in the molybdenum disulfide nano lubricating oil, the mass fraction of the dispersing agent mixed solution is 8-15 wt%, and the mass fraction of the molybdenum disulfide powder is 0.1-1.0 wt%; the preparation method comprises the following steps: adding molybdenum disulfide powder into a dispersing agent mixed solution to obtain a mixed reaction system; heating the mixed reaction system, magnetically stirring, and naturally cooling after the reaction is finished, so as to obtain a dispersant-modified molybdenum disulfide mixed solution; and mixing the dispersant modified molybdenum disulfide mixed solution with the base oil, and carrying out ultrasonic dispersion treatment to obtain the molybdenum disulfide nano lubricating oil. The MoS2 nano lubricating oil can exist stably, the wear scar diameter under the extreme pressure condition can be remarkably reduced, and the lubricating property of base oil is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of nano lubricating oil. Specifically, it is a stable molybdenum disulfide nano lubricating oil and a preparation method thereof. Background technique [0002] Existing studies have shown that compared with base oil, nano-lubricating oil has excellent extreme pressure performance, anti-wear and anti-friction performance, and has higher load-carrying capacity and lubricating performance under high temperature, heavy load and other conditions, and nano-particles can repair due to Localized peaks contact the resulting furrows, thereby improving the flatness of the surface. Molybdenum disulfide (MoS 2 ) are similar to graphene, both have obvious layered structure, and the lubricating properties of molybdenum disulfide depend on its own special crystal structure, and its layers are only connected by weak van der Waals force, showing the characteristics of easy shearing . The layer of molybdenum disulfide is a...

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to provide a kind of stable molybdenum disulfide nano lubricating oil and its preparation method to solve the problem of existing MoS 2 Molybdenum disulfide in nano lubricating oil is prone to mutual adsorption and aggregation, poor suspension stability and complex preparation process, etc.

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