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Silicon-based lubricating grease composition for electrical contact, and preparation method thereof

A technology of silicon-based grease and composition, which is applied in the field of silicon-based grease composition and its preparation, can solve the problems of insufficient utilization of synthetic oil and additives, failure of products to adapt to high and low temperatures, and unsuitable application conditions, etc. Achieve good colloid stability and mechanical stability, good high and low temperature performance, and excellent oxidation resistance

Active Publication Date: 2014-04-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN1295119A discloses a kind of lubricating grease for electrical contacts, which thickens lipid base oil with complex lithium metal soap to form grease, adds antioxidant, antirust agent and organic conductive agent, and the dropping point of the product is below 200°C , not suitable for high temperature application conditions
[0007] In the above studies on silicon-based greases, the characteristics of synthetic oils and additives were not fully utilized, and the products could not meet the requirements of high-temperature and low-temperature electrical contacts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 6 grams of 12-hydroxystearic acid and 2 grams of sebacic acid into 40 grams of ethyl silicone oil, heat and stir at 110 ° C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, and then raise the temperature to 140 ℃ for dehydration, after dehydration is completed, expand at 210 ℃, after the expansion is completed, add base oil dissolved in 0.5 g of diphenylamine, 0.2 g of Sudan III and 0.0025 g of zinc oxide and keep stirring, and the system is naturally cooled to room temperature to obtain the product .

Embodiment 2

[0034] Add 6 grams of 12-hydroxystearic acid and 2 grams of sebacic acid into 40 grams of ethyl silicone oil, heat and stir at 110 ° C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, and then raise the temperature to 140 ℃ for dehydration, after the dehydration is completed, expand at 210 ℃, after the expansion is completed, add base oil dissolved in 0.5 g of diphenylamine, 0.2 g of Sudan III and 0.0025 g of graphite and keep stirring, and the system is naturally cooled to room temperature to obtain the product.

Embodiment 3

[0036] Add 6 grams of 12-hydroxystearic acid and 2 grams of sebacic acid into 40 grams of ethyl silicone oil, heat and stir at 110 ° C, after the two fatty acids are dissolved, add lithium hydroxide hot concentrated solution for saponification, and then raise the temperature to 140 ℃ for dehydration, after the dehydration is completed, expand at 210 ℃, after the expansion is completed, add base oil dissolved in 0.5 g of diphenylamine, 0.2 g of Sudan III, 0.0012 g of graphite and 0.0013 g of zinc oxide and keep stirring, and the system is naturally cooled The product was obtained at room temperature.

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PUM

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Abstract

The present invention discloses a silicon-based lubricating grease composition for electrical contact, and a preparation method thereof. The silicon-based lubricating grease composition comprises, by weight, 70-85% of a silicon-based base oil, 12-27% of a thickening agent, and 0.1-3% of an additive. The silicon-based lubricating grease composition of the present invention adopts the silicone oil with excellent high temperature property and excellent low temperature property as the silicon-based base oil, and is added with a solid conductive agent, such that the product has good colloidal stability, mechanical stability and good high temperature performance, and can be used for contact lubrication of electronic products. The composition of the present invention is prepared through the one-step synthesis method, and has advantages of simple process, low energy consumption and the like.

Description

technical field [0001] The invention relates to the field of electronic product manufacturing, in particular to a silicon-based lubricating grease composition for electrical contacts and a preparation method thereof. Background technique [0002] Grease is an important part of industrial lubricants. It is a plastic solid to semi-solid lubricating material composed of thickener and base oil. In order to meet harsh application conditions, various functional additives are often added to improve its performance. performance and are widely used in steel, automotive, aerospace and military industries. Silicon-based grease is a kind of high-performance grease product made from complex lithium soap of 12-hydroxystearic acid and dibasic acid as thickener. Because of its high dropping point and excellent mechanical stability, The bearing has less leakage, excellent water resistance, anti-rust and oxidation stability, so it has a wide range of applications in the steel industry, autom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10N40/14C10N30/10C10N30/14
Inventor 曾晖纪红兵陈哲梁伟灿
Owner SUN YAT SEN UNIV