Composite calcium-based lubricating grease and preparation method thereof

A calcium-composite, lubricating grease technology, applied in lubricating compositions, the petroleum industry, etc., can solve the problems that the market price of lithium-based lubricating grease cannot rise synchronously, squeeze the profit margin of production enterprises, and increase the cost of lithium-based lubricating grease, etc. Achieve the effects of improving storage hardening, improving friction and wear resistance and oxidation stability, and improving adhesion

Active Publication Date: 2020-09-29
长沙众城石油化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-based lubricating grease has a high dropping point, and its operating temperature range is -20 to 120°C. It has good water resistance, mechanical stability, rust resistance and oxidation stability; however, lithium-based complex calcium soap thickener has long-term anti-wear properties. The disadvantage of poor performance, and it is not suitable to be mixed with other greases, easy to separate oil in storage, compared with non-metallic soap greases, the operating temperature range is small, and the water resistance is also poor, which can no longer meet the increasingly stringent requirements of modern industry
Moreover, the price of lithium hydroxide on the market has increased by about 5 times, and the cost of lithium-based grease has increased significantly
Due to market reasons, the market price of lithium-based grease cannot rise simultaneously with the price of lithium hydroxide, which squeezes the profit margins of manufacturers

Method used

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  • Composite calcium-based lubricating grease and preparation method thereof
  • Composite calcium-based lubricating grease and preparation method thereof
  • Composite calcium-based lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] It is formulated by weight from the following components and contents of raw materials:

[0073]

[0074] Preparation:

[0075] Add 30 parts of 150BS, 30 parts of 500SN and 9 parts of calcium hydroxide to the reaction kettle according to metering, and stir evenly. Below 60°C, add 6 parts of glacial acetic acid and 6 parts of phosphoric acid, and stir for 40 minutes; then add 3 parts of phenylboronic acid, and stir for 20 minutes; when the temperature rises to 90°C, add 2 parts of dodecyl hydroxy Stearic acid and 2 parts of stearic acid were stirred and reacted for 10 min, and heated again. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 1 part of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 5 parts of polyol ester and 5 parts of PIB2400. When the temperature continues to rise to 220-240°C, heat-preserve and refine for 5-15 minutes. After refining, cool down to 80-120...

Embodiment 2

[0078] It is formulated by weight from the following components and contents of raw materials:

[0079]

[0080]

[0081] Preparation:

[0082] Add 25 parts of 150BS, 30 parts of 500SN and 10.8 parts of calcium hydroxide to the reactor according to the metering, and stir evenly. Below 60°C, add 7 parts of glacial acetic acid and 7 parts of phosphoric acid, and stir for 40 minutes; then add 3 parts of phenylboronic acid, and stir for 20 minutes; when the temperature rises to 90°C, add 1.5 parts of dodecyl hydroxy Stearic acid and 1.5 parts of stearic acid were stirred and reacted for 10 min, and heated again. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 1.2 parts of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 6 parts of polyol ester and 6 parts of PIB2400. When the temperature continues to rise to 220-240°C, heat-preserve and refine for 5-15 minutes. After refining, c...

Embodiment 3

[0085] It is formulated by weight from the following components and contents of raw materials:

[0086]

[0087] Preparation:

[0088] Add 35 parts of 150BS, 30 parts of 500SN and 7.2 parts of calcium hydroxide to the reactor according to the metering, and stir evenly. Below 60°C, add 5 parts of glacial acetic acid and 5 parts of phosphoric acid, and stir for 40 minutes; then add 3 parts of phenylboronic acid, and stir for 20 minutes; when the temperature rises to 90°C, add 2.5 parts of dodecyl hydroxy Stearic acid and 2.5 parts of stearic acid were stirred and reacted for 10 minutes, and heated again. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 0.8 parts of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 4 parts of polyol ester and 4 parts of PIB2400. When the temperature continues to rise to 220-240°C, heat-preserve and refine for 5-15 minutes. After refining, cool down ...

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Abstract

The invention relates to novel composite calcium-based lubricating grease and a preparation method thereof. The novel composite calcium-based lubricating grease is prepared from, by weight, 50-80% ofa base liquid, 20-40% of a novel composite calcium-based composite calcium soap thickening agent and 0.1-5% of a function improvement additive. The novel composite calcium-based lubricating grease ischaracterized in that the novel composite calcium-based thickening agent is adopted, a calcium phenylborate-calcium phosphate component is introduced to improve the friction and wear resistance and the antioxidant stability of the composite calcium-based thickening agent and improve the storage hardening problem of the composite calcium-based lubricating grease, and meanwhile, the characteristicsof excellent extreme pressure wear resistance, mechanical stability, water resistance and the like of the composite calcium-based thickening agent are fully utilized, so that the prepared novel composite calcium-based lubricating grease can meet the use requirements of high temperature, high speed, high reliability and long service life of the hub bearing of the heavy-duty vehicle.

Description

technical field [0001] The invention relates to a lubricating grease and a preparation method thereof, in particular to a novel composite calcium-based lubricating grease and a preparation method thereof. Background technique [0002] Heavy-duty vehicles have the greatest demand for lubricating grease in wheel bearings. According to the classification of lubricating grease for vehicle hubs by the National Lubricating Grease Institute (NLGI), heavy-duty vehicles in the market usually use GC-type hub bearing grease. Because grease plays an important role in hub bearings—mainly anti-wear, anti-friction and sealing, it is often called the "fifth component" of hub bearings. Therefore, grease plays a very important role in ensuring the normal operation of vehicle hub bearings. [1] . [0003] In the 1940s and 1950s in our country, the over-composite calcium-based complex calcium soap thickener has been used as the vehicle hub bearing lubricating grease. [3] . Calcium-based comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N50/10C10N40/02C10N30/02C10N30/06C10N30/08C10N30/10
CPCC10M169/00C10M2203/1025C10M2207/283C10M2205/026C10M2207/1225C10M2201/085C10M2227/06C10M2207/1265C10M2207/1285C10M2215/064C10M2219/106
Inventor 廖顺知阎君喻波
Owner 长沙众城石油化工股份有限公司
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