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Self-repairing compound titanium-based grease and preparation method thereof

A self-repairing and lubricating grease technology, which is applied in the field of lubricating grease, can solve the problem of not considering the reasonable matching of extreme pressure wear-resistant additives and wear self-repairing additives, the oxidation and load-bearing properties cannot be guaranteed at the same time, and the composite titanium-based grease does not have self-repairing properties. And other problems, to achieve the effect of improving utilization rate and service life, good carrying capacity, and strong resistance to water splashing

Active Publication Date: 2013-06-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Chinese patent CN200410036957.8, the thickener is composed of calcium sulfonate and polyurea, and its oxidation and load-bearing properties cannot be guaranteed at the same time, and the reasonable matching of extreme pressure wear-resistant additives and wear self-repairing additives is not considered, and there is a single outstanding performance. Overall lack of performance
Chinese patent CN200510120518.X has invented a compound multi-soap base self-repairing bearing grease and its preparation method, the grease contains base liquid, complex calcium sulfonate thickener, complex calcium-lithium thickener, anti-oxidation and anti-corrosion additives , metal passivator, tungsten disulfide extreme pressure additive, wear-resistant additive, self-repairing additive, and structure improver are mixed. This invention does not use composite titanium soap thickener, and its disadvantage is that there are too many components in lubricating grease , may affect each other. It is difficult to determine the reasonable compatibility of the final extreme pressure wear resistance of the grease and the wear self-repairing functional additive. If the compatibility problem is not selected reasonably, the overall performance of the entire grease will be reduced.
Both U.S. Patents US5589443 and US5668092 relate to complex calcium-based grease or calcium sulfonate soap. Similar to domestic patents, calcium sulfonate soap, calcium complex soap or a mixed soap type of the two is used instead of titanium complex soap, and the United States Both patents US5589443 and US5668092 use molybdenum disulfide as a solid extreme pressure additive, which has no effect on repairing the worn surface
In addition, Chinese patents CN200610089029.7 and CN101307269A respectively disclose the preparation method of composite titanium-based grease, and Chinese patent CN101058762A discloses an environmentally friendly composite titanium-based grease and its preparation method. The composite titanium-based grease described in these patents None have self-healing function

Method used

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  • Self-repairing compound titanium-based grease and preparation method thereof
  • Self-repairing compound titanium-based grease and preparation method thereof
  • Self-repairing compound titanium-based grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this embodiment, a self-repairing composite titanium-based grease is composed of the following components: paraffin-based mineral oil, which accounts for 70% of the weight of the grease, is refined and has a viscosity index of 96; Soap thickener, the thickener is composed of benzoic acid: stearic acid: tetraisopropyl titanate saponification reaction product with a mass ratio of 1:1:1; extreme pressure antiwear agent accounting for 5% by weight of grease and anti-friction agent, wherein the extreme pressure anti-wear agent and anti-friction agent are zinc dialkyldithiophosphate and flake graphite respectively, the mass ratio is 1:1; the self-healing lubricating material accounting for 9% of the grease weight, the The self-healing lubricating material is composed of serpentine powder; dialkylphenylamine, which accounts for 1.5% by weight of the grease, is an antioxidant.

[0025] The preparation method is as follows: mix 1 / 2-1 / 3 base oil with high molecular acid, stir,...

Embodiment 2

[0027]In this example, a self-healing composite titanium-based grease is composed of the following components: 80% of the weight of the grease is refined, a paraffinic mineral oil with a viscosity index of 100 and a base oil mixed with synthetic polyhydrocarbyl esters and synthetic esters , the mixing mass ratio is mineral oil: synthetic ester is 2:1; the compound titanium soap thickener accounting for 10% of the grease weight is composed of phthalic acid: 12 hydroxy hardener with a mass ratio of 1:1:2 Fatty acid: composed of saponification reaction products of tetraisopropyl titanate; extreme pressure antiwear agent and friction reducer accounting for 3% by weight of grease, among which extreme pressure antiwear agent and friction reducer are dialkyl dithio Molybdenum phosphate and flake graphite, the mass ratio is 1:2; the self-healing lubricating material accounting for 6% of the grease weight, the self-healing lubricating material is composed of serpentine powder and micron...

Embodiment 3

[0031] In this embodiment, a self-healing composite titanium-based grease is composed of the following components: a refined base oil with a viscosity index of 120 paraffinic mineral oil and polyalphaolefin synthetic oil, which accounts for 85% of the grease weight, mixed The mass ratio is mineral oil: synthetic oil is 3:1; the compound titanium soap thickener accounting for 11% of the grease weight is composed of benzoic acid: 12 hydroxystearic acid with a mass ratio of 1:1:3: Composition of saponification reaction products of tetraisopropyl titanate; extreme pressure antiwear agent and friction reducer accounting for 1% by weight of grease, wherein extreme pressure antiwear agent and friction reducer are dialkyl molybdenum dithiophosphate and Micron molybdenum disulfide powder with a mass ratio of 1:3; a self-healing lubricating material accounting for 2.5% of the grease weight, the self-healing lubricating material is composed of serpentine powder and nano-calcium carbonate ...

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Abstract

The invention provides a self-repairing compound titanium-based lubricating grease and a preparation method thereof, and relates to a lubricating grease and a preparation method of the lubricating grease. The lubricating grease has excellent antioxidant ability and bearing capacity, and is capable of repairing the surface of a wearing part and prolonging the service life of the friction part. The lubricating grease is prepared by mixing a base oil, a compound titanium soap thickening agent, an antioxidant additive, an anti-wear reagent at extreme pressure, an antifriction additive and a self-repairing lubricating material together; and the preparation method of the lubricating grease comprises the following steps of mixing the base oil with a high molecular acid and stirring, heating the temperature to the range of 80-90 DEG C, adding tetraisopropyl titanate and a low molecular acid, preserving heat and stirring, increasing the reaction temperature to the range of 120-150 DEG C, and then adding the left base oil and continuing increasing the temperature to the range from 200 to 220 DEG C and stirring; adding the self-repairing lubricating material after grease is formed, and stirring, and then adding other additives, and finally, grinding, homogenizing and degassing, thereby obtaining the self-repairing compound titanium-based lubricating grease. The self-repairing compound titanium-based lubricating grease is used for the automobile industry, the metallurgical industry, the food industry and the aircraft industry.

Description

technical field [0001] The invention relates to a lubricating grease, and also relates to a preparation method of the lubricating grease. Background technique [0002] According to relevant statistics, more than 80% of rolling bearings and 20% of sliding bearings are lubricated with grease. Researching and selecting good additives is one of the effective ways to improve the quality of lubricating grease. Traditional additives improve the lubricating performance of lubricating grease through physical or chemical adsorption and chemical reaction, but they cannot make the friction pair wear-free or have no impact on the friction pair. Damage repair. With the development of science and technology, people put forward the idea of ​​self-healing lubricant additives. The so-called surface self-healing refers to the use of mechanical friction and (or) tribochemical effects generated by friction during the friction process. Energy and matter are exchanged, forming a protective film ...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M177/00
Inventor 曲建俊尹继辉乔延涛
Owner HARBIN INST OF TECH
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