Bentonite-containing grease composition and preparation method thereof
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A grease composition and technology of bentonite, applied in the field of bentonite grease, can solve the problems of large addition amount and poor effect, and achieve the effect of improving anti-wear performance, small wear scar diameter and high sintering load
Active Publication Date: 2022-08-09
CHINA PETROLEUM & CHEM CORP +1
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[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
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preparation example Construction
[0023] The method for preparing a lubricating grease composition provided by the present invention includes: mixing organic bentonite, inorganic metal salt, dispersant and part of the 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 remaining base oil, and then optionally mixing with additives . Generally, the finally obtained mixture should also be ground to make the material disperse more uniformly.
[0025] In the present invention, in order to further improve the performance of the resulting 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 inorganic metal salt aqueous solution, for example, th...
Embodiment 1
[0034] In the reaction kettle, add 670g of mineral oil 1 (100 ℃ kinematic viscosity 10mm 2 / s), 100g organic bentonite (brand HFGEL-310) and 20g acetone, stir evenly, add 60g inorganic metal salt aqueous solution (30g sodium carbonate + 130g water), stir and heat up to 125±5°C, add 200g mineral oil 1, material A sample of the grease composition was prepared by three-wheel milling to uniformly disperse the material.
Embodiment 2
[0036] In the reactor, add 670g olefin oil 1 (100 ℃ kinematic viscosity 10mm 2 / s), 120g organic bentonite (brand HFGEL-310) and 20g acetone, stir evenly, add 40g inorganic metal salt aqueous solution (10g lithium carbonate+30g water), stir and heat up to 125±5℃, add 200g olefin oil 1, the material A sample of the grease composition was prepared by three-wheel milling to uniformly disperse the material.
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Abstract
The invention relates to the field of bentonite grease, and discloses a bentonite-containing grease composition and a preparation method thereof. The grease composition contains a base oil, an organic bentonite, an inorganic metal salt, and an optional dispersant, wherein the inorganic metal salt is selected from the group consisting of alkali metal carbonates, alkali metal chlorides, transition metal carbons At least one of acid salts and transition metal chlorides; the content of inorganic metal salts is 8-110 g per kilogram of base oil. The invention also discloses a method for preparing the lubricating grease composition, which comprises: mixing organic bentonite, inorganic metal salt, dispersant and part of base oil, heating and heating, and then mixing with the remaining base oil. Through the above technical solutions, the present invention can effectively improve the anti-wear performance of the grease. Specifically, the grease composition of the present invention has higher maximum non-seizing load and sintering load, and has smaller wear scar diameter.
Description
technical field [0001] The invention relates to the field of bentonite grease, in particular to a grease composition using bentonite as a thickening agent 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 equipment, more and more parts are combined and integrated. Such parts are more and more difficult to maintain or even impossible to maintain. Therefore, , these parts require better performance and longer life grease lubrication. Such as sealed hub bearings, small vibrators, small reducers, etc., the load increases during the application process, 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 applications. [0003] Among different grease types, bentonite grease, as a kind of high dropping point gre...
Claims
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