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Lubricating oil additive with core-shell structure, preparation method thereof and lubricating oil

A technology of lubricating oil additive and core-shell structure is applied in the field of lubricating oil, which can solve the problems of insufficient performance of lubricating oil, and achieve the effect of reducing friction coefficient and wear rate, low cost and high yield.

Pending Publication Date: 2020-05-01
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of modern industry, there are higher requirements for the service life and reliability of workpieces, and the performance of traditional lubricating oils is increasingly unable to meet the needs of modern industry.

Method used

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  • Lubricating oil additive with core-shell structure, preparation method thereof and lubricating oil
  • Lubricating oil additive with core-shell structure, preparation method thereof and lubricating oil
  • Lubricating oil additive with core-shell structure, preparation method thereof and lubricating oil

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preparation example Construction

[0035] The present invention also provides a preparation method of a lubricating oil additive with a core-shell structure, comprising the following steps:

[0036] S1: Add 0.1-0.5 g of hard nanoparticles constituting the core to 20-40 ml of ethylene glycol, stir or sonicate to mix the components evenly;

[0037] Preferably, the particle size of the hard nanoparticles in step S1 is 20-200nm. The particle size of the hard nanoparticles constituting the core directly affects the particle size of the lubricating oil additive. If the particle size is too large, the additive may be stuck between the two sides. Between a frictional machine;

[0038] Preferably, the material of the hard nanoparticles in step S1 is selected from oxide particles or nitride particles of metals such as silicon dioxide, silicon nitride, titanium dioxide, tungsten carbide, and ceramic particles;

[0039] S2: Add the flexible metal ion compound and polyethylene glycol to the mixed solution in step S1, and m...

Embodiment 1

[0051] A SiO 2 @Cu core-shell lubricating oil additives, including SiO 2 The composed core and the copper shell wrapped around the core.

Embodiment 2

[0053] A kind of Si 3 N 4 @Cu core-shell lubricating oil additives, including Si 3 N 4 The composed core and the copper shell wrapped around the core.

[0054] In the above two embodiments, silicon dioxide and silicon nitride are used as the core, and flexible metal copper is used as the shell layer. Silicon dioxide and silicon nitride have good chemical stability and high wear resistance, and are often used as lubricants. Oil nano-additives to prevent the wear of the matrix material during the friction process, and due to their good chemical stability, silicon dioxide and silicon nitride are suitable for wide-area and harsh industrial environments. As a common soft metal, copper has the characteristics of good ductility, high thermal conductivity and electrical conductivity. It is often used in the manufacture of cables, electronics and electrical components, but at the same time, copper has a face-centered cubic structure with many sliding surfaces. Excellent material as...

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Abstract

The invention discloses a lubricating oil additive with a core-shell structure, a preparation method of the lubricating oil additive and lubricating oil. The lubricating oil additive comprises a coremade of a hard nano material and a shell layer wrapping the outer layer of the core, and the shell layer is made of flexible metal. The preparation method of the lubricating oil additive comprises thefollowing steps: adding the hard nanoparticles forming the core into ethylene glycol, and uniformly mixing the components by stirring or ultrasonic treatment; adding a flexible metal ion compound andpolyethylene glycol into the mixed solution, and uniformly mixing the solution; and finally, transferring the mixed solution into a high-pressure reaction kettle with a polytetrafluoroethylene liner,putting the high-pressure reaction kettle into a drying oven for reaction, centrifugally collecting precipitates after the reaction is finished, and drying the precipitate to obtain the lubricating oil additive. The lubricating oil additive provided by the invention greatly improves the antifriction and wear resistance of the lubricating oil.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a lubricating oil additive with a core-shell structure, a preparation method thereof and lubricating oil. Background technique [0002] Lubricating oil has always been a widely used lubricating material in the engineering field. In the fields of rail transit, industrial engineering, precision instruments and automobile industry, the friction between workpieces has always been one of the important factors causing workpiece damage, and the wear of workpieces will bring huge economic losses every year. For example, the friction loss between threaded connections is one of the main reasons for the failure of components. With the vigorous development of my country's rail transit industry, how to ensure the reliability and long-life serviceability of mechanical parts serving in the rail transit industry is a problem that cannot be ignored. Introducing lubricating oi...

Claims

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Application Information

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IPC IPC(8): C10M125/00C10M125/04C10M125/26C10M177/00C10N30/06
CPCC10M125/00C10M125/04C10M125/26C10M177/00
Inventor 樊小强姚遥李浩李文朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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