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Lithium-based low-noise lubricating grease composition and preparation method thereof

A grease composition and low-noise technology, applied in the field of grease, can solve the problems of less grease and high cost price, and achieve the effects of reducing production cost, stable product quality and high cost performance

Active Publication Date: 2013-04-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two patents are more or less related to ether oil. Since there are not many ether oil resources in our country, there are very few lubricating greases in this area, and the cost price is relatively high.

Method used

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  • Lithium-based low-noise lubricating grease composition and preparation method thereof
  • Lithium-based low-noise lubricating grease composition and preparation method thereof
  • Lithium-based low-noise lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 130 grams of 12 hydroxystearic acid and 450 grams of naphthenic base oil A (mixed oil: the total cycloalkane content is 80%; the total single-ring aromatic content is 11%; the total two-ring aromatic content is 3%) into In the reaction kettle, it was heated to 80° C., and an aqueous solution of 18.8 grams of lithium hydroxide was added, and the amount of water added was 70 grams. Heating to 90°C to start timing saponification. After saponification, heat up. After rising to 210°C, use 230 grams of base oil A to cool in the reactor. When the cooling temperature is 140°C, continue to add 150 grams of base oil B (mixed oil : C8, C10 trimethylolpropane ester) to cool down, add 20 grams of additive component C (dioctyl diphenylamine) when the temperature drops to 90 ° C, and add 20 grams of additive component D (2 , 6 di-tert-butyl-p-cresol), when the temperature drops to 30 ° C, the finished product will be produced after three roller presses.

[0031] The performance of th...

Embodiment 2

[0043] With 50 grams of 12 hydroxystearic acid and 20 grams of stearic acid and 400 grams of naphthenic base oil A (mixed oil: the total cycloalkane content is 53%; The total single-ring aromatics content is 24%; the total two-ring aromatics content is 10%) into the reactor, heated to 83 ° C, adding 10.6 grams of lithium hydroxide aqueous solution configuration, the addition of water is 70 grams. Be heated to 95 ℃ and start timing saponification, heat up after saponification finishes, rise to 213 ℃ with 300 grams of base oil A (mixed oil: the total cycloalkane content is 53%; the total single-ring aromatics content is 24%; the total two-ring aromatics Content is 10%) carry out cooling in reactor, when cooling temperature is at 170 ℃, continue to add 180 grams of base oil B (mixed oil: C8, C10 trimethylol propane ester: C5, C9 pentaerythritol ester=1: 1) To cool down, add 25 grams of additive component C (beta naphthylamine) when the temperature drops to 95 ° C, and add 25 gram...

Embodiment 3

[0056] 100 grams of 12 hydroxystearic acid and 40 grams of stearic acid and 320 grams of naphthenic base oil A (mixed oil: the total cycloalkane content is 54%; the total single-ring aromatics content is 24%; the total two-ring aromatics Content is 8%) drop in the reactor, be heated to 85 ℃, add the aqueous solution of 20.5 grams lithium hydroxide configuration, the addition amount of water is 100 grams. Be heated to 100 ℃ and start timing saponification, heat up after saponification finishes, rise to 215 ℃ with 310 grams of base oil A (mixed oil: the total cycloalkane content is 54%; the total single-ring aromatic hydrocarbon content is 24%; the total two-ring aromatic hydrocarbon content is 8%) in the reaction kettle for cooling, when the cooling temperature is controlled at 190°C, continue to add 200 grams of base oil B (mixed oil: C5, C9 pentaerythritol ester) to cool down, add 13 Add 17 grams of additive component C (dioctyl diphenylamine) when the temperature drops to 80...

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Abstract

The invention relates to a lithium-based low-noise lubricating grease composition and a preparation method thereof. The lubricating grease composition comprises 60-70% of base oil A, 10-20% of base oil B, 5-15% of thickening agent and 1-5% of additive; the preparation method comprises the following steps: adding 40-60% of the base oil A into a reaction kettle; adding fatty acid; heating to 80-85 DEG C; adding the aqueous solution of lithium hydroxide; heating to 90-100 DEG C to start saponification; after the saponification is finished, raising temperature to 210-215 DEG C; cooling in the reaction kettle with the rest base oil A, wherein the cooling temperature is controlled between 140 and 190 DEG C; adding the base oil B to reduce temperature to 90-100 DEG C, and then adding the additive C; when the temperature is reduced to 70-80 DEG C, adding the additive D; and when the temperature is reduced to 30-60 DEG C, performing oil pressing with a three-roll mill to obtain the finished product. The lubricating grease has high performance in reducing vibration noise, and the vibration value can be reduced by 2-5 decibels; meanwhile, the indexes such as high-temperature performance and low-temperature performance of the lubricating grease reach a relatively good index range, and the finished product of lubricating grease also has transparent appearance.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a novel lubricating grease composition and a preparation method. Background technique [0002] In many technical fields, ultra-pure, low-noise greases are required in order to reduce the noise value of rolling bearings and the acoustic emission in air. Special greases meet the noise limits and tight running tolerances of precision rolling bearings and guarantee economical and energy-saving operation. Meeting the challenges of the machinery industry by developing and manufacturing high-purity special greases that improve the noise characteristics of rolling bearing greases. Lubricating grease is usually divided into soap-based grease and non-soap-based grease. Soaps are named according to the metal name in the metal chemical soap that acts as a thickener. Each soap has its unique properties. Lithium-based lubricants Grease is the most commonly used grease, accounting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10M177/00C10N50/10C10N40/02
Inventor 吴宝杰冯强刘亚春任艳奎刘庆廉
Owner CHINA PETROLEUM & CHEM CORP
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