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Lubricating grease composition and preparation method thereof

A lubricating grease composition and technology of the composition, applied in lubricating compositions, petroleum industry, etc., can solve the problems of complex lubricating grease production process, large oil separation, poor lubrication, etc., and achieve good colloidal stability and good anti-wear performance effect

Active Publication Date: 2017-03-08
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the lubricating greases used in the existing automobile transmissions are silicone oil lithium soap greases. However, due to the poor compatibility between silicone oil and lithium soap thickeners, the production process of lubricating grease is relatively complicated, and the lubricating grease colloid is stable. Poor, large amount of oil in storage and use, poor wear resistance, for this reason, poor lubrication in long-term use, short equipment life

Method used

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  • Lubricating grease composition and preparation method thereof

Examples

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preparation example Construction

[0034] The present invention provides a kind of preparation method of the lubricating grease composition as described in the above technical scheme, comprising:

[0035] The base oil, the thickener and the structure improver are mixed, heated and cooled to obtain a grease composition.

[0036] In the present invention, the base oil, the thickener and the structure improver are mixed and heated, and the heating temperature is preferably 200-220°C; more preferably 205-215°C.

[0037] In the present invention, the mass ratio of the base oil, thickener and structure improver is preferably (40-80): (10-30): (10-30); more preferably (50-70): ( 12-28): (12-28); most preferably (55-65): (15-25): (15-25).

[0038] cooling after heating to obtain a grease composition; the cooling can be natural cooling or rapid cooling. The present invention is not limited thereto, as long as it is cooled to 20°C to 40°C.

[0039] After cooling, preferably grinding, a grease composition is obtained. ...

Embodiment 1

[0058] Add 55g of No. 200 tolyl silicone oil, 15g of lithium stearate soap, and 10g of chlorendate into the reaction kettle, stir, heat, raise the temperature to 210°C, stop heating, add 20g of No. 200 tolyl silicone oil to cool, and cool to room temperature. Wheel grinding three times (gap 4:2 silk), to obtain a grease composition. Its performance was measured according to the measurement method described in the present invention, and the results are shown in Table 1. Table 1 shows the performance of the lubricating grease composition prepared in the examples and comparative examples of the present invention.

Embodiment 2

[0060] Add 60g of No. 300 methylphenyl silicone oil, 10g of 12-hydroxystearic acid lithium soap, and 10g of chlorendate into the reaction kettle, stir, heat, raise the temperature to 210°C, stop heating, add 20g of No. 300 methylphenyl silicone oil to cool, and cool to At room temperature, grind three times with a three-wheel mill (gap 4:2 wires) to obtain a grease composition. Its performance was measured according to the measurement method described in the present invention, and the results are shown in Table 1. Table 1 shows the performance of the lubricating grease composition prepared in the examples and comparative examples of the present invention.

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Abstract

The invention provides a lubricating grease composition. The lubricating grease composition is prepared from, by weight, 40-80 parts of base oil, 10-30 parts of thickening agent and 10-30 parts of structural improving agent, wherein the structural improving agent is a halogenated ester compound. The lubricating grease composition comprises the base oil, the thickening agent and the halogenated ester compound serving as the structural improving agent, and finally obtained lubricating grease is high in wear resistance as well as colloidal stability under the combined action of the base oil, the thickening agent and the halogenated ester compound in a specific ratio. According to experimental results, the lubricating grease composition is smaller than 5.8% in pressure grease separation and smaller than 0.76 mm in wear scar diameter.

Description

technical field [0001] The invention relates to the technical field of lubricants, in particular to a grease composition and a preparation method thereof. Background technique [0002] Grease is a semi-solid lubricant for mechanical parts made by adding thickeners and lubricating additives to base oil. Grease can adhere to vertical surfaces without loss at normal temperature, and can work in open or poorly sealed friction parts, which has irreplaceable characteristics of other lubricants. At present, it is widely used in automobiles or construction machinery. [0003] Most of the lubricating greases used in the existing automobile transmissions are silicone oil lithium soap greases. However, due to the poor compatibility between silicone oil and lithium soap thickeners, the production process of lubricating grease is relatively complicated, and the lubricating grease colloid is stable. Poor, large amount of oil in storage and use, poor wear resistance, for this reason, poo...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N50/10C10N30/06C10N40/04C10N10/02
CPCC10M169/00C10M2207/1265C10M2207/1285C10M2207/281C10M2229/0425C10N2030/06C10N2040/04C10N2050/10C10N2010/02
Inventor 卢现菊陈林赵玉贞
Owner CHINA PETROLEUM & CHEM CORP