Lubricating oil additive containing ultrafine rare-earth powder

Abstract

The invention relates to a lubricating oil additive containing ultrafine rare-earth powder. The additive consists of the following components in percentage by mass: natural serpentine mineral powder, ultrafine rare-earth powder, surfactant, a dispersing agent, a friction modifier, an auxiliary and base oil, wherein the ultrafine rare-earth powder is one of cerium hydroxide, neodymium oxide and cerium fluoride; the surfactant is borate, span-60 or oleic acid; the dispersing agent is either polyisobutene dibutyl succinimide or high molecular weight polyisobutene dibutyl succinimide; the friction modifier is one of melamine cyanurate, boron nitride and calciuym nitride; the auxiliary comprises 72% of dialkyl disulfo oxygen molybdenum phosphate sulfide, 18% of polymethyl tetradecyl acrylate and 10% of a vinyl-propylene copolymer; and the base oil is 500SN base oil. The additive has obvious corrosion resistance; and after an engine is treated technically by using the self-repairing additive, the dry friction coefficient of the machine is reduced from original 0.05 to be less than 0.005 and therefore the surface abrasion is reduced.

Description

technical field [0001] The invention relates to a lubricating oil additive containing ultrafine rare earth powder. Background technique [0002] At present, wear is one of the three major causes of failure of mechanical parts (wear, corrosion and fracture). According to statistics, about one-third of the energy currently used by industrial sectors around the world is finally consumed in various forms, and the loss caused by friction is staggering. Among the mechanical parts that fail, about 80 % are due to various forms of wear and tear. The annual loss caused by friction and wear in our country is as high as 2.8 trillion yuan, which is an astonishing figure. Lubrication is one of the most effective ways to reduce friction and prevent wear. Adding lubricating oil between the contact surfaces of various friction pairs that undergo relative motion can reduce friction, reduce wear, prolong the service life of mechanical equipment, save energy and also reduce CO 2 emissions,...

AI Technical Summary

Problems solved by technology

However, in practice, solid lubricating oil additives have problems such as poor dispersion stability and easy precipitation, and most of the existing additives are difficult to form a metallurgically bonded high-hardness self-healing ceramic layer with the surface of the metal friction pair

Therefore, once the friction environment exceeds the specified allowable range, the self-healing film will fall off and fail to adversely affect the lubricating oil

In addition, some lubricating additives also have problems such as high cost and complicated preparation process.

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