Antiwear lithium base grease composition

A technology of lithium-based grease and composition, which is applied in the field of grease to achieve the effects of good wear reduction effect, improvement of adverse effects and reduction of production cost

Active Publication Date: 2012-12-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no public report on the use of mineral base oils with high sulfur content to prepare anti-wear lithium-based greases

Method used

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  • Antiwear lithium base grease composition

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Anti-wear lithium base lubricating grease composition, component and mass percent are as follows:

[0029] (1) 6.8% 12-OH lithium stearate soap;

[0030] (2) Lithium stearate soap 1.7%;

[0031] (3) High sulfur mineral base oil 91.0%;

[0032] (4) Diphenylamine 0.5%.

[0033] High sulfur-containing mineral base oil (sulfur content 0.28%, kinematic viscosity at 100°C 9.6mm 2 / s) 510g was put into the kettle, 68g of 12-OH lithium stearate soap and 17g of lithium stearate soap were added. Heat up and stir. When the temperature rises to 210-220°C, stop heating and keep the temperature for 2 minutes. Stir and add 400g of high-sulfur mineral base oil for rapid cooling. Add 5 g of diphenylamine when the temperature is 140-150°C. Stir well. Take it out of the kettle and grind it three times. The properties of the resulting grease are listed in Table 1.

example 2

[0035] Anti-wear lithium base lubricating grease composition, component and mass percent are as follows:

[0036] (1) 8.0% 12-OH lithium stearate soap;

[0037] (2) Lithium stearate soap 2.0%;

[0038] (3) High sulfur mineral base oil 89.6%;

[0039] (4) Diphenylamine 0.4.

[0040] High sulfur-containing mineral base oil (sulfur content 0.26%, 100°C kinematic viscosity 11.2mm 2 / s) 500g into the kettle, add 80g of 12-OH lithium stearate soap and 20g of lithium stearate soap. Heat up and stir. When the temperature rises to 210-220°C, stop heating and keep the temperature for 3 minutes. Stir and add 396g of high-sulfur mineral base oil for rapid cooling. Add 4g of diphenylamine when the temperature is 140-150°C. Stir well. Take it out of the kettle and grind it three times. The properties of the resulting grease are listed in Table 1.

example 3

[0042] Anti-wear lithium base lubricating grease composition, component and mass percent are as follows:

[0043] (1) 3.2% 12-OH lithium stearate soap;

[0044] (2) Lithium stearate soap 0.8%;

[0045] (3) High sulfur mineral base oil 95.8%;

[0046] (4) Diphenylamine 0.2%.

[0047] High sulfur-containing mineral base oil (sulfur content 0.25%, kinematic viscosity 6.0mm at 100°C 2 / s) 383g was put into the kettle, 32g of 12-OH lithium stearate soap and 8g of lithium stearate soap were added. Stir and heat up. When the temperature rises to 210-220°C, stop heating and keep the temperature for 5 minutes. Stir and add 575g of high-sulfur mineral base oil for rapid cooling. Add 2 g of diphenylamine when the temperature is 140-150°C. Stir well. Take it out of the kettle and grind it three times. The properties of the resulting grease are listed in Table 1.

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Abstract

The invention relates to an antiwear lithium base grease composition which comprises the following components: 3.2 to 8.2 % of 12-OH lithium stearate soap, 0.8 to 2.0 % of lithium stearate soap, 89.0 to 95.8 % of mineral base oil containing high sulfur and 0.2 to 0.8 % of diphenylamine. The composition is characterized by using the mineral base oil containing high sulfur to prepare the ntiwear lithium base grease. The product has small diameter of wearing crack in four-ball testing and good anti-attrition effect, can effectively improve friction and wearing situations when machinery equipment runs, and can be used for lubrication of automobile, engineering machinery and other machinery equipment.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to an anti-wear lithium-based lubricating grease composition. Background technique [0002] Grease is a semi-fluid to semi-solid paste obtained by dispersing a thickener in base oil and adding various additives. Its main functions are wear reduction, protection and sealing. In order to improve the anti-friction effect of lubricating grease, various organic or inorganic compounds containing sulfur, phosphorus, molybdenum, lead and other elements are usually added to the lubricating grease, such as vulcanized cottonseed oil, sulfurized isobutylene, tricresyl phosphate, molybdenum disulfide , graphite, lead naphthenate, etc. These compounds are widely used anti-wear additives in lubricating greases. [0003] The way to improve and enhance the anti-friction properties of lithium-based greases is mainly achieved by adding various anti-friction agents containing elements suc...

Claims

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Application Information

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IPC IPC(8): C10M169/02
Inventor王先会刘翠苹刘在均
OwnerCHINA PETROLEUM & CHEM CORP