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A kind of rare earth wear-resistant lubricating grease and preparation method thereof

A grease and rare earth technology, which is applied in the field of rare earth wear-resistant grease and its preparation, can solve the problems of poor interfacial compatibility and unfavorable dispersion of rare earth nanoparticles, and achieve improved dispersion, enhanced synergistic effect, excellent extreme pressure and The effect of anti-wear properties

Active Publication Date: 2021-06-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the disclosure of patents that at present, rare earth modified greases are mainly concentrated in rare earth borates, rare earth oxides, rare earth fluorides and rare earth hydroxides. Such rare earth salts and oxides, hydroxide particles and lubricants The interface compatibility of grease is poor, which is not conducive to the dispersion of rare earth nanoparticles

Method used

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  • A kind of rare earth wear-resistant lubricating grease and preparation method thereof
  • A kind of rare earth wear-resistant lubricating grease and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0080] This embodiment provides a kind of rare earth wear-resistant lubricating grease, and described lubricating grease comprises: 0.05wt% of rare earth composite additive, thickener lithium stearate 12wt%, balance is base oil; Nanoparticles and organic acid; The content of rare earth is 2wt%; The rare earth includes rare earth lanthanum oxide; The content of the nanoparticle is 95wt%; The nanoparticle has a hydrotalcite-like (Mg / Al- LDHs); the content of the organic acid is 3wt%; the organic acid is ethylenediaminetetraacetic acid;

[0081] The preparation method of the rare earth wear-resistant grease is as follows:

[0082] (1) The rare earth and organic acid solution are mixed and subjected to microwave treatment to obtain a rare earth complex solution; wherein, the mass ratio of the rare earth to the organic acid solution is 1:1; the rare earth is a nanoscale rare earth; the organic The concentration of the acid is 4wt%; the organic acid has an amino polycarboxylic acid...

Embodiment 2

[0089] This embodiment provides a kind of rare earth wear-resistant lubricating grease, said lubricating grease comprises: rare earth composite additive 0.015wt%, thickening agent is 1,2 hydroxyl lithium stearate 12wt%, balance is base oil; The additive includes rare earths, nanoparticles and organic acids; the content of the rare earths is 1wt%; the rare earths include rare earth yttrium oxide; the content of the nanoparticles is 96wt%; the nanoparticles have graphene with a two-dimensional sheet structure; The content of the organic acid is 3wt%; the organic acid is ethylenediaminetetraacetic acid;

[0090] The preparation method of the rare earth wear-resistant grease is as follows:

[0091] (1) The rare earth and organic acid solution are mixed and subjected to microwave treatment to obtain a rare earth complex solution; wherein, the mass ratio of the rare earth to the organic acid solution is 1:1; the rare earth is a nanoscale rare earth; the organic The concentration of...

Embodiment 3

[0098] This embodiment provides a rare earth wear-resistant grease, the grease includes: 0.075wt% rare earth composite additive, 10wt% thickener, and the balance is base oil; the rare earth composite additive includes rare earth, nanoparticles and organic Acid; the content of rare earth is 3wt%; the rare earth includes rare earth cerium oxide; the content of the nanoparticles is 92wt%; the nanoparticles have molybdenum disulfide of two-dimensional lamellar structure; the content of the organic acid is 5wt %; The organic acid tool is diethylenetriaminepentaacetic acid;

[0099] The preparation method of the rare earth wear-resistant grease is as follows:

[0100](1) The rare earth and organic acid solution are mixed and subjected to microwave treatment to obtain a rare earth complex solution; wherein, the mass ratio of the rare earth to the organic acid solution is 1:1; the rare earth is a nanoscale rare earth; the organic The concentration of the acid is 2.5wt%; the organic a...

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Abstract

The invention relates to a rare earth wear-resistant lubricating grease and a preparation method thereof. The lubricating grease comprises: 0.005-0.1 wt% of a rare earth composite additive, 9-15 wt% of a thickener, and base oil as the balance. The lubricating grease product provided by the present invention has excellent extreme pressure and anti-wear properties, and further, the lubricant prepared by the method provided by the present invention effectively enhances the synergistic effect between nano-rare earth particles and graphene particles, so that the Prepared grease products with excellent extreme pressure and antiwear properties.

Description

technical field [0001] The invention relates to the field of lubrication, in particular to a rare earth wear-resistant grease and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of high-speed railway materials and technology, the research on bearing box bearing structure design, manufacturing process, material chemical composition and smelting method for high-speed railway has been deepened, and the lubrication basis has become the main factor affecting its life and reliability. factor. The traction motor is the heart of the high-speed railway, and its bearings and lubrication are the key to the operation of the train. Due to the limitation of the mechanical structure of the high-speed railway axle box, the bearings of the high-speed railway axle box can only be lubricated with grease. The level of research and development of high-speed railway axle box bearing grease in foreign countries has entered a high-speed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/045C10M2201/041C10M2201/062C10M2201/065C10M2201/066C10M2201/082C10M2207/128C10M2215/04
Inventor 王钰赵栋
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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