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Lubricating grease composition for new energy automobile and preparation method of lubricating grease composition

A grease composition and material technology, applied in the field of grease, can solve the problems of extreme pressure and anti-wear properties, high-temperature anti-oxidation stability that cannot meet new energy vehicles, etc., and achieve good oxidation stability, good anti-wear performance, extreme good pressure performance

Active Publication Date: 2022-01-18
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the hardening problem of the existing complex calcium-based grease has been improved, the extreme pressure anti-wear performance, high temperature anti-oxidation stability, etc. still cannot meet the needs of new energy vehicles

Method used

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  • Lubricating grease composition for new energy automobile and preparation method of lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present embodiment provides a kind of grease composition, and its preparation method comprises:

[0030] Add 600g of naphthenic mineral oil and 400g of synthetic oil into the reaction kettle, and put in 30g of acetic acid and 21g of calcium hydroxide for saponification reaction. The reaction time is 1h. When the temperature rises to 90°C, add 100g of 12-hydroxystearic acid to continue Saponification reaction, the time is controlled at 1h. After saponification is completed, the temperature is raised to 210°C, 150g of paraffin-based mineral oil is added, the temperature is controlled at 150°C after quenching, and 100g of paraffin-based mineral oil is added to cool down to 50°C. Finally, 15g of diphenylamine, 15g2 , 6-di-tert-butyl-p-cresol, 20g bis(2-ethylhexyl)molybdenum dithiophosphate, 10g molybdenum disulfide, after being uniformly dispersed by a three-roll machine, thicken and pack in cans.

Embodiment 2

[0032] The present embodiment provides a kind of grease composition, and its preparation method comprises:

[0033] Add 800g of naphthenic mineral oil and 200g of synthetic oil into the reactor, and put in 100g of 12-hydroxystearic acid and 30g of stearic acid and 21g of calcium hydroxide for saponification reaction, the time is controlled at 1h, and the reaction temperature is controlled at 90°C. Add 15g of terephthalic acid to continue the reaction. The reaction time is 1h. After the saponification is completed, the temperature is raised to 210°C, and 150g of paraffin-based mineral oil is added to control the temperature at 150°C after quenching. 15g of diisooctyldiphenylamine, 15g of 2,6-di-tert-butyl-p-cresol, and 30g of molybdenum bis(2-ethylhexyl)dithiophosphate were uniformly dispersed by a three-roller machine, then thickened and packed in cans.

Embodiment 3

[0035] The present embodiment provides a kind of grease composition, and its preparation method comprises:

[0036] Add 500g naphthenic mineral oil and 400g synthetic oil in reactor, and drop into 100g12-hydroxystearic acid and 21g calcium hydroxide and carry out saponification reaction, time is controlled at 1h, adds 25g benzoic acid to continue reaction, after saponification is completed, heat up to 210°C, add 200g of paraffin-based mineral oil, control the temperature after quenching at 150°C, then add 100g of paraffin-based mineral oil to cool down to 50°C, and finally add 15g of p-phenylenediamine, 15g of 2,6-di-tert-butyl p-cresol , 20g of bis(2-ethylhexyl)molybdenum dithiophosphate and 10g of graphite, uniformly dispersed by a three-roller machine, then thickened and packed in cans.

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Abstract

The invention provides a lubricating grease composition for a new energy automobile and a preparation method of the lubricating grease composition. The lubricating grease composition comprises the following components in parts by weight: 80-90 parts of base oil, 10-20 parts of a thickening agent, 1-5 parts of an antioxidant and 1-5 parts of an anti-wear agent, wherein the base oil comprises a first component and a second component in a mass ratio of (0.5-4.5): 1; the first component is naphthenic mineral oil; and the second component comprises synthetic oil and paraffin-based mineral oil in a mass ratio of (1-6): (2-5). The lubricating grease composition provided by the invention is relatively high in dropping point, has excellent oxidation stability, extreme pressure anti-wear property and low-temperature fluidity, and can meet specific requirements of new energy automobiles on lubricating grease.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a lubricating grease composition applicable to new energy vehicles and a preparation method thereof. Background technique [0002] New energy vehicles solve the exhaust emission problem of traditional fuel vehicles and are more environmentally friendly. Therefore, the demand for new energy vehicles is increasing, and more requirements are put forward for automotive universal joint grease. New energy vehicles can reach the maximum torque instantaneously at the start-up stage, and the grease is required to have high extreme pressure and anti-wear properties, high temperature oxidation stability, low temperature fluidity, etc., to achieve full lubrication at the moment the vehicle starts. [0003] Composite calcium-based grease has excellent performance and low cost. Compared with traditional lithium-complex grease and polyurea grease, it has higher extreme pressure, wear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N50/10C10N30/06C10N30/08C10N30/10C10N40/25
CPCC10M169/00C10M2203/1065C10M2207/1225C10M2207/1285C10M2203/1025C10M2215/064C10M2207/026C10M2223/045C10M2201/066C10M2207/1265C10M2207/1426C10M2207/1415C10M2201/041C10M2207/025C10N2050/10C10N2030/06C10N2030/08C10N2030/10C10N2040/25C10N2010/04C10N2010/12
Inventor 姚晓菲童刘李文杰韩占伟
Owner CHINA PETROLEUM & CHEM CORP
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