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Compound aluminum-base lubricating grease composition and preparation method

A lubricating grease composition and composite aluminum technology, applied in lubricating composition, petroleum industry, etc., can solve the problems of easy drying of bentonite grease, slow change of consistency temperature, large oil separation of composite aluminum-based grease at high temperature, etc., to achieve Good high temperature performance, stable product quality, solve the problem of high temperature oil separation

Inactive Publication Date: 2014-08-13
SUZHOU HUIFENG LUBRICANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of composite aluminum-based grease composition, which can be used for the lubrication of automobile hub bearings and various types of closed gears, and solve the problem of high-temperature oil separation of composite aluminum-based greases and long-term use of bentonite greases. The problem of easy drying at high temperature makes this grease have good thickening temperature performance, and has other characteristics of composite aluminum-based grease on the basis of ensuring that the consistency changes slowly with temperature

Method used

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  • Compound aluminum-base lubricating grease composition and preparation method

Examples

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Effect test

Embodiment 1

[0035] Add 8Kg of refined mineral oil, 0.36Kg of stearic acid, 0.27Kg of aluminum isopropoxide, and 0.16Kg of benzoic acid into the reaction kettle, stir and heat to 90-120°C, and keep it for 60 minutes, then add 0.1Kg of water, and continue to stir the reaction 90min, heat up to 195-215°C, refine at this high temperature for 30min, add 5Kg of refined mineral oil, add 2Kg of organic bentonite when the temperature drops to about 150°C, add 2Kg of acetone after 30min, add the remaining 4Kg of refined mineral after dispersing for 40min Oil and sulfurized isobutylene 0.1-1Kg, benzotriazole fatty acid amine salt 0.2-2Kg and diphenylamine 0.1-0.6Kg, after mixing and stirring evenly, grinding and degassing to obtain the finished composite aluminum-based grease A.

Embodiment 2

[0037] Add 8Kg of mixed oil of mineral oil and synthetic oil, 0.36Kg of stearic acid, 0.27Kg of aluminum isopropoxide, and 0.16Kg of benzoic acid into the reaction kettle, stir and heat to 90-120°C, keep warm for 60min, then add 0.1 Kg water, continue to stir and react for 90 minutes, heat up to 195-215°C, refine at this high temperature for 30 minutes, add 5Kg of refined mineral oil, add 1Kg of organic bentonite when the temperature drops to about 150°C, add 1Kg of acetone after 30 minutes, and disperse for 40 minutes Then add the remaining 2Kg of refined mineral oil, 0.1-1Kg of sulfurized isobutylene, 0.2-2Kg of benzotriazole fatty acid amine salt and 0.1-0.6Kg of phenothiazine, mix and stir evenly, grind and degas to obtain the finished composite aluminum-based grease B.

Embodiment 3

[0039] Add 8Kg of refined mineral oil, 0.36Kg of stearic acid, 0.27Kg of aluminum isopropoxide, and 0.16Kg of benzoic acid into the reaction kettle, stir and heat to 90-120°C, keep warm for 60 minutes, add 0.1Kg of water, and continue stirring React for 90 minutes, heat up to 195-215°C, refine at this high temperature for 30 minutes, add 5Kg of refined mineral oil, add 2Kg of organic bentonite when the temperature drops to about 150°C, add 1.8Kg of propylene carbonate after 30 minutes, disperse for 40 minutes, then add The remaining 4Kg of refined mineral oil, 0.1-1Kg of phenyl-α-naphthylamine, 0.2-2Kg of benzotriazole fatty acid amine salt and 0.1-0.6Kg of phenothiazine are mixed and stirred evenly, then ground and degassed to obtain the finished composite aluminum-based lubricant Fat C.

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Abstract

The invention discloses a compound aluminum-base lubricating grease composition and a preparation method. The composition is prepared from the following components in percentage by weight: 70-85% of basic oil, 3-10% of a compound aluminum soap thickening agent, 5-15% of bentonite, 5-15% of a dispersant, 0.5-5% of an anti-wear reagent at an extreme pressure, 0.5-3% of an antioxidant and 0.1-1% of an antirust agent, wherein the basic oil is selected from one or a mixture of refined mineral oil, synthetic oil, poly-alpha olefin and ester oil. The preparation method comprises the following steps: fusing benzoic acid, stearic acid and aluminium isopropoxide in the basic oil to be mixed for reaction; refining at a high temperature after a period of time; then, adding the basic oil and cooling; then adding organic bentonite, uniformly mixing, adding a dispersant; and after a period of time, adding residual basic oil and finally grinding to grease. The compound aluminum-base lubricating grease composition disclosed by the invention has a good thick temperature performance and the preparation method adopts a one-step saponification compound process, so that the preparation process is simplified and the preparation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of industrial lubricating oil, in particular to a novel composite aluminum-based lubricating grease composition and a preparation method thereof. Background technique [0002] Composite aluminum-based grease is a typical high-temperature grease with many advantages: high dropping point, good mechanical stability, water resistance, oxidation stability, and unique high-temperature reversibility compared with other greases It can basically restore the original grease state after a short period of use under extreme high temperature conditions. This feature is particularly beneficial in the metallurgical industry, especially for the lubrication of high-temperature parts such as sintered steel. At the same time, composite aluminum-based grease is the best choice for all greases. It has the smallest fiber structure, so it has excellent pumpability, especially suitable for centralized lubrication systems in metallur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M177/00C10N30/02C10N50/10
Inventor 黄后权惠泽民惠进德汪帆
Owner SUZHOU HUIFENG LUBRICANT
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