Lubricating oil anti-wear agent and preparation method thereof

Abstract

The invention discloses a lubricating oil anti-wear agent. The lubricating oil anti-wear agent comprises 65-80% by mass of base oil, 2-5% by mass of a rare earth compound, 2-5% by mass of liquid sodium polyacrylate, 5-10% by mass of an antioxidant, and 10-20% by mass of a dispersant. The lubricating oil anti-wear agent uses the unique chemical and physical performances of the rare earth compound, so the wear and extreme pressure resistances of oil are greatly improved; ionic bond exchange between sodium polyacrylate contained in the lubricating oil anti-wear agent and the surface of a metal facility is carried out, so a magnetic suspension effect is generated, and the part wearing is reduced; and no corrosive substances comprising sulfur or phosphorus are contained, so the lubricating oil anti-wear agent has no damages to parts, and does not cause environmental pollution.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to an antiwear agent for lubricating oil. Background technique [0002] In the traditional lubrication theory, lubrication is divided into liquid lubrication and boundary lubrication. The two metal surfaces that are in relative motion are completely separated by lubricating oil film, and there is no direct contact between the metals. This lubrication state is called liquid lubrication; as the load increases, the thickness of the oil film between the metal surfaces gradually decreases. When the load increases to To a certain extent, the continuous oil film is broken by the peaks of the metal surface, and direct contact between the metal surfaces is locally generated. This lubrication state is called boundary lubrication. In boundary lubrication, when the metal surface only bears a moderate load, if there is an additive that can be adsorbed on the metal surface or wear violently with t...

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of anti-wear additives, a metal nano-anti-wear additive containing nano-metal compound components has been produced in recent years. This anti-wear additive not only has good performance in terms of anti-wear properties, but also overcomes environmental impact However, it has two deficiencies: one is that the nano-solution belongs to the suspension technology, and after being configured into a liquid, it is still an unstable liquid, and there will be a layering effect if it is placed for a long time, and its dispersibility is not high when it is added to lubricating oil. There are relatively large defects, so the technology needs to be further improved; the second is nano-metal powder, nano-ceramic powder, on the surface of machine parts and engine moving parts, long-term use will produce nano-particle aggregation. This nano-aggregation effect lasts for a long time. The more it accumulates, the larger particles will be deposited, which will cause new wear and tear on the machine parts.

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