Lubrication grease composition and preparation method thereof

A grease composition and a technology for polyurea-based grease are applied to grease compositions and their preparation, and the field of polyurea-based grease compositions can solve the problem that urea-based structures do not have the ability to carry high loads, friction and wear, The problem of poor anti-wear and anti-wear effect, etc., achieves the effects of excellent water-spray resistance, long colloidal stability, and simple preparation process.

Active Publication Date: 2015-04-01
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at problems such as the poor anti-friction and anti-wear effect of the existing common urea-based grease, the generated urea-based structure does not have the ability to carry hig...

Method used

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  • Lubrication grease composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Mix 420 parts of trimellitate TMT-4 (Liaocheng Ruijie Chemical Co., Ltd., the same below) with 35.04 parts of diphenylmethane-4,4-diisocyanate (Aike Reagent) in a grease preparation kettle , heated to 70°C to dissolve; at the same time, add 512 parts of polyalphaolefin SpectraSyn 40 and 7.92 parts of octadecylamine (Shanghai Zhixin Chemical Co., Ltd.) to another reaction kettle, heat to 70°C to dissolve, and then add 6.67 parts of aniline (Shandong Haihua Co., Ltd.) and 17.76 parts of cyclohexylamine (Nantong Yitong Chemical Co., Ltd.), stirring to make it dissolve; the mixed solution in the reaction kettle is quickly dropped into the preparation kettle, the fan is turned on, and after stirring at a constant temperature for 10 minutes, Raise the temperature to 150°C and keep it warm for 20 minutes; cooling, grinding, homogenizing and degassing to obtain polyurea-based grease.

[0049] Add 100 parts of the above-mentioned polyurea-based grease into the pre-cleaned normal...

Embodiment 2

[0051] Add 100 parts of the above-mentioned polyurea-based grease into the pre-cleaned normal pressure reactor, heat up and stir, add 1 part of potassium triborate neutral oil dispersion Octopol PTB, 1 part of butyl / octyl diphenylamine Irganox L57, 4 parts of tackifier ethylene-propylene copolymer T614 (Jinzhou Runda Chemical Co., Ltd.), 2 parts of polytetrafluoroethylene and 3 parts of nano-calcium carbonate, mixed and stirred, then heated to 110 ° C, stirred at constant temperature for 40 minutes, cooled out of the kettle , homogeneously ground and packaged to obtain grease composition II.

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Abstract

The invention provides a lubrication grease composition and a preparation method thereof. The lubrication grease composition comprises the following components: (a) polturea-based grease; (b) an antiwear agent; (c) an antioxidant; (d) a thickening agent; (e) a micro-nano granular additive. By taking the weight percentage of the polturea-based grease (a) as 100%, the addition amount of the antiwear agent (b) is 0.5-5wt%, the addition amount of the antioxidant (c) is 0.1-3wt%, the addition amount of the thickening agent (d) is 1-8wt%; the addition amount of the micro-nano granular additive (e) is 2-10wt%. The lubrication grease composition is excellent in comprehensive performance, can be used as lubricants of machines which operate in poor conditions with high temperature, severe abrasion, heavy load, humidity and high corrosion, and can be used for lubricating high-speed or ultrahigh-speed operation.

Description

technical field [0001] The invention relates to a lubricating grease composition and a preparation method thereof, in particular to a polyurea-based lubricating grease composition. It belongs to the technical field of lubricants. Background technique [0002] The essence of the friction process is the process of energy consumption and material loss. According to statistics, 80% of machine failures are caused by the wear of parts. Lubrication is one of the most effective ways to reduce and resist wear. At present, most lubricants are improved by adding a variety of additives, and almost every improvement in the quality of lubricants is the result of the development of additives. [0003] Since the micro-nano particles can form a thin film with a low friction coefficient on the friction surface, and can fill and repair the friction surface to a certain extent, thereby reducing the wear of the friction pair, reducing the heat accumulation on the friction surface, and prolongin...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M161/00C10N30/06C10N30/10
Inventor 范海粉王瑞兴孙宗圣
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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