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Bentonite-containing lubricating grease composition and preparation method thereof

A technology of grease composition and bentonite, which is applied in the field of bentonite grease, can solve the problems of poor effect and large amount of addition, and achieve the effects of small wear spot diameter, improved anti-wear performance, and high sintering load

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a bentonite-containing lubricating grease composition and a preparation method thereof in order to overcome the problems of large addition amount and poor effect in the prior art, and the lubricating grease composition has good extreme pressure and anti-wear properties

Method used

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  • Bentonite-containing lubricating grease composition and preparation method thereof
  • Bentonite-containing lubricating grease composition and preparation method thereof

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preparation example Construction

[0023] The method for preparing the lubricating grease composition provided by the invention comprises: mixing organic bentonite, inorganic metal salt, dispersant and part of base oil, heating and heating, then mixing with the remaining base oil, and then mixing with optional additives.

[0024] More specifically, the method includes: mixing organic bentonite, inorganic metal salt, dispersant and part of base oil and heating to 120-130 °C, then mixing with the rest of the base oil, and then mixing with optional additives . Generally, the final mixture should also be ground to make the material more uniformly dispersed.

[0025] In the present invention, in order to further improve the performance of the obtained grease composition, preferably, the inorganic metal salt is introduced in the form of an aqueous solution of the inorganic metal salt. There is no special requirement on the concentration of the aqueous solution of the inorganic metal salt, for example, the content of...

Embodiment 1

[0034] In the reaction kettle, add 670g of mineral oil 1 (100°C kinematic viscosity 10mm 2 / s), 100g organic bentonite (brand HFGEL-310) and 20g acetone, stir well, add 60g inorganic metal salt solution (30g sodium carbonate + 130g water), stir and heat up to 125±5°C, add 200g mineral oil 1, material Grinding by a three-wheel mill to make the material uniformly dispersed, a grease composition sample was prepared.

Embodiment 2

[0036] In the reaction kettle, add 670g olefin oil 1 (100°C kinematic viscosity 10mm 2 / s), 120g organic bentonite (brand HFGEL-310) and 20g acetone, stir evenly, add 40g inorganic metal salt solution (10g lithium carbonate + 30g water), stir and heat up to 125±5°C, add 200g olefin oil 1, material Grinding by a three-wheel mill to make the material uniformly dispersed, a grease composition sample was prepared.

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Abstract

The invention relates to the field of bentonite lubricating grease, and discloses a lubricating grease composition containing bentonite and a preparation method thereof. The lubricating grease composition contains base oil, organobentonite, inorganic metal salt and a selectively contained dispersing agent, and the inorganic metal salt is selected from at least one of carbonate of alkali metal, chloride of alkali metal, carbonate of transition metal and chloride of transition metal; and relative to the base oil per kilogram, the content of the inorganic metal salt is 8-110 g. The invention also discloses a method for preparing the lubricating grease composition, which comprises the following steps: mixing the organic bentonite, the inorganic metal salt, the dispersing agent and part of the base oil, heating, and mixing with the balance of the base oil. According to the technical scheme, the wear resistance of the lubricating grease can be effectively improved, and particularly, the lubricating grease composition disclosed by the invention has relatively high maximum non-seizure load and sintering load and relatively small wear scar diameter.

Description

Technical field [0001] The present invention relates to the field of bentonite grease, and in particular to a grease composition using bentonite as a thickener and a preparation method thereof. Background technique [0002] In recent years, with the development of automation and intelligence of mechanical equipment, in order to ensure the operation accuracy and reliability of the equipment, more and more integrated parts have been combined. Such parts have become increasingly difficult or even impossible to repair. Therefore, , these parts require grease lubrication with better performance and longer service life. For example, the load of sealed hub bearings, small vibrators, small reducers, etc. increases during application, and the grease needs to have excellent and long-lasting extreme pressure and anti-wear properties to ensure that these parts can meet the needs of long-term application. [0003] Among different grease types, bentonite grease is a high dropping point g...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M125/26C10N30/06C10N50/10
CPCC10M169/04C10M125/26C10M2201/145C10M2207/32C10M2203/1006C10M2207/08C10M2201/062C10M2201/081C10M2229/0415
Inventor 杨海宁姚立丹
Owner CHINA PETROLEUM & CHEM CORP
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