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Preparation of nano silicon dioxide lubricating grease

A technology of nano-silica and lubricating grease, applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems of large particle size and poor stability, and achieve small mass loss, excellent high-temperature performance, and good shear stability Effect

Inactive Publication Date: 2008-08-13
益田润石(北京)化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These early nano-silicas are all laboratory products with large particle size and poor stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of nano silicon dioxide lubricating grease of the present invention

[0030] Weigh a certain amount of silicone oil, heat to 150°C, and keep the temperature constant for 5 minutes. At this temperature, add a modifying agent whose content is 20% of the mass of silica, and stir until the modifying agent is uniformly dispersed in the base oil. Stirring was continued to raise the temperature to 157°C. Constant temperature 5min. Stop heating, add nano silicon dioxide, stir well. Grind 2 times with a three-roll mill to make fat.

Embodiment 2

[0032] Preparation of nano silicon dioxide lubricating grease of the present invention

[0033] Weigh a certain amount of silicone oil, heat to 132°C, and keep the temperature constant for 5 minutes. At this temperature, add a modifying agent whose mass is 10% of the silica mass, and stir until the modifying agent is uniformly dispersed in the base oil. Stirring was continued to raise the temperature to 140°C. Constant temperature 5min. Stop heating, add nano silicon dioxide, stir well. Grind 2 times with a three-roll mill to make fat.

Embodiment 3

[0035] Preparation of nano silicon dioxide lubricating grease of the present invention

[0036] Weigh a certain amount of silicone oil, heat to 120°C, and keep the temperature constant for 5 minutes. At this temperature, add a modifying agent, the mass of the modifying agent is 5% of the mass of the silica, and stir until the modifying agent is uniformly dispersed in the base oil. Stirring was continued to raise the temperature to 130°C. Constant temperature 5min. Stop heating, add nano silicon dioxide, stir well. Grind 2 times with a three-roll mill to make fat.

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PUM

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Abstract

The invention discloses a preparation method of high-performance silicon dioxide grease, which comprises the following components, base oil of 70 to 90 weight percent, silica of 5 to 30 weight percent, modifying agent is in a dose of 5-30 weight percent of the silicon dioxide. The silicon dioxide grease of the invention has a very good storage stability and shear stability, good colloidal stability, water resistant properties of high temperature and low temperature performance. The silicon dioxide grease can be used for electrical insulation, damping system lubrication, vacuum sealed, instruments and cock sealing and lubricating, can also be used for resistant chemical media site lubricating and sealing, and so on. In addition, the silicon dioxide grease can also be used for preparing valves grease, methanol resistance grease, and is applicable in lubrication and interrupter of the metal contact of switch silvering, silver plating, and tinning and other.

Description

technical field [0001] The invention relates to an effective sealing grease, which is a nano-silica lubricating grease with excellent storage stability and shear stability, and a nano-silica lubricating grease with obvious progress in water resistance, high and low temperature, and colloidal stability. Silica lubricating greases, in particular to the preparation and determination of the properties of such greases. Background technique [0002] With the rapid development of modern industry, the industrial production department has put forward increasingly strict requirements on the performance of grease in many aspects such as high temperature resistance, extreme pressure and wear resistance, water resistance, protection, and bearing life. At present, the general trend of the development of lubricating grease is multi-efficiency and high dropping point, so as to meet the lubrication requirements of modern mechanical parts. The development of high dropping point lubricating g...

Claims

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Application Information

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IPC IPC(8): C10M139/04C10M125/26C10N30/00C10N40/34
Inventor 王金波于海英杜守琴甄轶黄学东黄学智
Owner 益田润石(北京)化工有限公司
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