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Lubricating grease composition and preparation method thereof

A lubricating grease composition and technology of lubricating grease, applied in lubricating composition, petroleum industry and other directions, can solve the problems of enhancing the use temperature range, single silicone grease thickener, etc., achieving good high and low temperature performance, excellent oxidation resistance, The effect of good colloidal stability and mechanical stability

Active Publication Date: 2012-07-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address above-mentioned problems, for the single problem of silicone grease thickener, adopts double thickener (nanometer SiO 2 and complex lithium soap) to prepare silicone grease, so that the silicone grease fiber has a good three-dimensional network structure and can withstand certain mechanical grinding, enhancing its use temperature range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 32 kilograms of 12-hydroxystearic acid and 13 kilograms of sebacic acid into 200 kilograms of simethicone, heat and stir at 100 ° C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, and then heat up to Dehydration is carried out at 140°C. After dehydration is completed, puffing is carried out at 200°C. After the puffing is completed, the temperature is lowered to 100°C. Add 45 kg of base oil dissolved in mixed additives and keep stirring. The system is naturally cooled to room temperature to obtain the product.

[0035]

Embodiment 2

[0037] 30 kg of 12-hydroxystearic acid and 12 kg of sebacic acid and 3 kg of nano-SiO 2 Add the granules to 200 kg of simethicone oil, heat and stir at 100°C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, then raise the temperature to 140°C for dehydration, and then expand at 200°C after dehydration After the puffing is finished, the temperature is lowered to 100°C, 45 kg of base oil dissolved in mixed additives is added and kept stirring, and the system is naturally cooled to room temperature to obtain the product.

[0038]

Embodiment 3

[0040] 28 kg of 12-hydroxystearic acid and 11 kg of sebacic acid and 6 kg of nano-SiO 2 Add the granules to 200 kg of simethicone oil, heat and stir at 100°C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, then raise the temperature to 140°C for dehydration, and then expand at 200°C after dehydration After the puffing is finished, the temperature is lowered to 100°C, 45 kg of base oil dissolved in mixed additives is added and kept stirring, and the system is naturally cooled to room temperature to obtain the product.

[0041]

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PUM

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Abstract

The invention discloses a lubricating grease composition and a preparation method of the lubricating grease composition. The lubricating grease composition consists of the following materials by weight: 70-85% of lubricating grease base oil, 12-27% of a double thickening agent and 0.1-3% of an additive, wherein the lubricating grease base oil is silicone oil. The preparation method adopts silicone oil with good high-temperature and low-temperature performance as the lubricating grease base oil, is simple in process, and effectively reduces the energy consumption relative to a two-step method.In the lubricating grease composition of the invention, nano-SiO4 is used as a thickening agent and the additive simultaneously. The additive also comprises such solid additives as an antioxidant, a rust protection agent and the like. The lubricating grease composition of the invention has good colloid stability, mechanical stability and high and low temperature performance, and can be suitable for an extreme operating condition.

Description

technical field [0001] The invention relates to the field of industrial lubrication, in particular to lubricating grease used in high and low temperature extreme environments and a preparation method thereof. Background technique [0002] Grease is an important part of industrial lubricants. Due to its inherent excellent performance, it can not only meet the general lubrication requirements, but also has good extreme pressure, anti-wear and sealing properties. Widely used in steel, automotive, aerospace and military industries. In today's grease field, the use of SiO 2 More and more greases are used as thickeners, due to SiO 2 The thickener does not have the fibrous structure of the lithium complex grease network, so its mechanical properties are slightly lacking. The complex lithium-based grease is made of 12-hydroxystearic acid and dibasic acid complex lithium soap as a thickener. The network fiber structure of the metal soap can improve the mechanical properties of the...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N30/10C10N30/12C10N50/10
Inventor 纪红兵曾晖梁伟灿郑雄枫
Owner SUN YAT SEN UNIV
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