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Low-noise lithium-based lubricating grease composition and preparation method thereof

A technology of composition and lubricating grease, applied in the direction of lubricating composition, petroleum industry, etc., can solve problems such as unfavorable operation and control, complex post-treatment process, etc., and achieve the effect of good bearing vibration performance

Active Publication Date: 2012-10-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, these technologies have restrictions on base oil raw materials, on the other hand, the post-treatment process is relatively complicated, which is not conducive to operation and control

Method used

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  • Low-noise lithium-based lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 30kg of 500SN, 8kg of dodecylhydroxystearic acid, 1kg of alkenylsuccinimide (code T154) into the reaction kettle, heat to 90℃, add 4kg of lithium hydroxide aqueous solution (1.12) between 15min and 40min kg lithium hydroxide+2.88kg water), heat up to 160℃, gradually add 30kg of 500SN, continue heating to 200℃, the material is completely melted, add 30.5kg500SN, start cyclic shear (pressure 0.5MPa~0.7MPa) to cool down, temperature When the temperature is lowered to 100°C, 0.5kg T203 and 0.5kg T704 are added, and a sample of lubricating grease is obtained from the kettle.

Embodiment 2

[0031] Add 60kg of dioctyl sebacate, 8kg of lithium dodecyl stearate, and 2kg of dienyl succinimide (code T154) into the reaction kettle, and gradually stir and heat to 210°C. Lithium fatty acid is completely melted. Gradually add 29.5kg of dioctyl sebacate, start to circulate shearing and cooling (pressure 0.5MPa~0.7MPa), when the temperature is 100℃~120℃, add 0.2kg T202, 0.3kg T705, and take it out of the kettle Prepare grease samples.

Embodiment 3

[0033] Add 30kg of poly alpha olefin oil (viscosity 5.9mm at 100℃) into the reactor 2 / s), 8kg of dodecanoic acid, 0.5kg of polyalkenyl succinimide (code T155), heated to 85℃, add 5kg of lithium hydroxide aqueous solution (1.12kg of hydroxide Lithium+3.88kg water), heat up to 165℃, and gradually add 30kg poly-α olefin oil (100℃ viscosity 5.9mm 2 / s), continue to heat up to 200℃, the material is completely melted, add 31kg of poly-α olefin oil (100℃ viscosity 5.9mm 2 / s), start cyclic shearing and cooling (pressure 0.5MPa~0.7MPa), when the temperature is 110℃, add 0.5kg T701 and take out the kettle to prepare the grease sample.

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Abstract

The invention relates to a lithium-based lubricating grease composition. Based on the total weigh of lubricating grease, the lithium-based lubricating grease composition comprises the following components: (1) 75 to 94 percent of base oil; (2) 5 to 15 percent of lithium soap thickening agent; and (3) 0.1 to 4 percent of alkenyl diimide dispersing agent. The lubricating grease composition has excellent bearing vibrating performance, can be applied to medium and small-sized sealing bearings and is applicable to lubrication of motor bearings of official automated equipment and household appliances.

Description

Technical field [0001] The present invention belongs to a lubricant, specifically a grease composition. Background technique [0002] Motors in office automation equipment and household appliances require low-noise and low-vibration ball bearings. Most of these bearings are disposable deep groove ball bearings with small diameters and seals, which are generally lubricated with grease. However, the high-grade grease used in such small and miniature bearings usually needs to be imported, and the price is relatively expensive. Therefore, it is very necessary to prepare grease with good noise performance. Commonly used types of low-noise bearing grease include lithium-based grease and urea-based grease. In addition to impurities that can affect the noise performance of the low-noise grease, the soap fiber structure, base oil type and viscosity, and post-treatment process will also affect the noise performance of the grease. [0003] Some patents propose to reduce the noise of grease ...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N40/02
Inventor 杨海宁姚立丹孙洪伟段庆华
Owner CHINA PETROLEUM & CHEM CORP
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