Hub bearing lubricating grease for electric automobile as well as preparation method thereof

A wheel bearing and electric vehicle technology, applied in the field of lubricating grease, can solve the problems that the performance cannot meet the high temperature resistance requirements of electric vehicles, and the service life is short, so as to achieve good anti-wear performance, prolong the oil change cycle, and good high temperature performance.

Inactive Publication Date: 2018-05-04
东莞太平洋博高润滑油有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wheel hub bearing grease used in the market is mainly ordinary mineral lithium-based grease, which has a short service life. Generally, it needs to be disassembled and replaced after 20,000 kilometers. At the same time, its performance cannot meet the special high temperature resistance requirements of electric vehicles.

Method used

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  • Hub bearing lubricating grease for electric automobile as well as preparation method thereof
  • Hub bearing lubricating grease for electric automobile as well as preparation method thereof
  • Hub bearing lubricating grease for electric automobile as well as preparation method thereof

Examples

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preparation example Construction

[0061] The present invention provides a method for preparing the hub bearing grease for electric vehicles described in any one of the above technical solutions, comprising:

[0062] The present invention provides a preparation method of the hub bearing lubricating grease for electric vehicles described in the above technical solution, comprising:

[0063] A) Mix part of the synthetic oil with higher fatty acid, dibasic acid, and lithium hydroxide monohydrate, and react at 100°C to 120°C to obtain a reaction solution;

[0064] B) The temperature of the reaction solution is raised to 230°C-240°C, kept for 5-10 minutes, mixed with the remaining synthetic oil and cooled to 90°C-110°C, and then mixed with composite antioxidant, zinc dialkyldithiophosphate, organic Molybdenum salt and corrosion inhibitor are mixed to obtain hub bearing lubricating grease for electric vehicles.

[0065] The preparation method of the hub bearing lubricating grease for electric vehicles provided by th...

Embodiment 1～3、 comparative example 1

[0079] Process requirements: Take 1 / 2 synthetic oil and add 12-hydroxystearic acid / sebacic acid / lithium hydroxide monohydrate into the open reaction cup, keep the temperature at 110±5°C, react the soap for 2 to 3 hours, and replenish during the process Appropriate amount of water, continue to heat up to the highest refining temperature of 230±5°C, keep the temperature for 5 minutes, add the remaining synthetic oil and cool to 100±5°C, add p-diisooctyldiphenylamine and bis(3,5-tertiary butyl The compound antioxidant, ZDDP, organic molybdenum salt and corrosion inhibitor compounded with 4-hydroxyphenyl) sulfide in a ratio of 1:1 are stirred evenly and passed through a grinder to obtain the finished product. The components and proportions are shown in Table 1, and the test results are shown in Table 2. Table 2 shows the performance results of the lubricating grease for wheel hub bearings for electric vehicles prepared in the examples and comparative examples of the present inventi...

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Abstract

The invention provides hub bearing lubricating grease for an electric automobile. The hub bearing lubricating grease for the electric automobile is prepared from water and the following components inparts by weight: 80 to 95 parts of synthetic oil, 8 to 15 parts of higher fatty acid, 1 to 3 parts of binary acid, 1.0 to 4.5 parts of lithium hydroxide monohydrate, 0.5 to 2.5 parts of zinc dialkyl dithiophosphate, 0.5 to 2.5 parts of organic molybdenum salt, 0.02 to 1.5 parts of composite antioxidant and 0.05 to 1.5 parts of corrosion inhibitor, wherein the composite antioxidant comprises an amine antioxidant and a phenolic antioxidant. The lubricating grease prepared from the synthetic oil, the higher fatty acid, the binary acid, the lithium hydroxide monohydrate, the organic molybdenum salt, the composite antioxidant, the zinc dialkyl dithiophosphate and the corrosion inhibitor thiadiazole derivate through specific proportion can generate the synergistic effect; and the prepared lubricating grease has excellent high-temperature and low-temperature lubricating property, oxidation resistance and anti-wear extreme pressure property.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a hub bearing lubricating grease for an electric vehicle and a preparation method thereof. Background technique [0002] In recent years, electric vehicles have the characteristics of zero emission, zero pollution, energy saving and environmental protection, and have formed a rapid development trend in my country. Especially in recent years, they have been supported and promoted by national policies, and their development has become more rapid. The grease of pure electric vehicles is mainly used for the wheel planetary gears and bearings of electric wheels, and other parts are the same as ordinary vehicles. The lubricating grease for wheel hub bearings is a major category of automotive lubricating grease, occupying the largest share of the automotive lubricating grease market. The hub bearings of electric vehicles have higher requirements for lubricating grease than fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/08C10N40/02C10N50/10
CPCC10M169/045C10M2201/062C10M2205/0206C10M2207/2805C10M2207/281C10M2207/282C10M2215/064C10M2219/068C10M2219/084C10M2219/106C10M2223/045C10N2030/06C10N2030/08C10N2030/72C10N2040/02C10N2050/10C10N2010/12C10N2010/04
Inventor 杨杏萍
Owner 东莞太平洋博高润滑油有限公司
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