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Method for preparing lubricating grease with excellent anti-wear and wear-resistant performance

A friction-reducing, anti-wear, and lubricating grease technology, which is applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of large addition ratio, unenvironmental protection, and uneconomical, etc., and achieve optimal load capacity, strong adhesion, and The effect of long service life

Inactive Publication Date: 2010-04-21
河北九熙新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve excellent anti-friction and anti-wear effects, the general practice is to add various anti-friction and anti-wear additives to polyurea-based grease, and the addition ratio is relatively large, which is neither environmentally friendly nor economical.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 800g of Xinjiang 150BS and add it to the fat-making kettle, then add 50g of polyisobutylene with a molecular weight of 12,000, 5g of dimer acid, 15g of phosphoric acid ester, 2g of phosphorus star, and 20g of ethylene glycol oleate into the kettle, and heat up to 60°C. Stir at constant temperature for 30min, then divide the synthetic base oil into three parts, place the first synthetic base oil with a weight of 600g in a fat-making kettle, add 50gMDI (diphenylmethane-4,4-diisocyanate) in the kettle, Stir and heat up to 70°C to dissolve, speed up the stirring and keep the temperature to about 72°C. At the same time, add 20g of tetradecylamine and 28g of cyclohexylamine to another reaction kettle containing 200g of synthetic base oil, and dissolve at 60°C. In the case of rapid stirring, quickly put the mixed solution in the reaction kettle into the fat-making kettle, and a violent reaction occurs. When the temperature in the fat-making kettle rises to 115°C, add the r...

Embodiment 2

[0020] Take 650g of Xinjiang 150BS and 150g of rapeseed oil and add them to the fat-making kettle, then add 100g of T603, 20g of tricresyl phosphate, 5g of alkylphenol phosphite, and 10g of molybdenum dithiocarbamate oxide into the kettle, and heat up to 60°C. Stir at constant temperature for 30 minutes, then divide the synthetic base oil into three parts, place the first synthetic base oil with a weight of 600g in a fat-making kettle, and add 50g of MDI (diphenylmethane-4,4-diisocyanate) in the kettle , Stir and heat up to 70°C to dissolve, speed up the stirring and keep the temperature to about 72°C, at the same time add 20g of tetradecylamine and 28g of cyclohexylamine to another reaction kettle containing 200g of synthetic base oil, and dissolve at 60°C , under the condition of rapid stirring, quickly put the mixed solution in the reaction kettle into the fat-making kettle, a violent reaction occurs, when the temperature in the fat-making kettle rises to 115°C, add the rema...

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Abstract

The invention discloses a method for preparing polyurea lubricating grease with high PB value. By changing an addition process of an additive, the additive is used as a part of base oil to undergo a thickening reaction so as to double the wear-resistant extreme pressure effect of the additive, reduce the proportion of the anti-wear and wear-resistant additive and improve economic efficiency, and the preparation method is favorable for environmental protection. An ureido lubricating grease composite consists of the base oil, a thickening agent and the additive; and the base oil is a mixture ofvarious kinds of mineral base oil, synthetic oil, tackifier and anti-wear and wear-resistant additives. The polyurea lubricating grease prepared by the method has the excellent anti-wear and wear-resistant performance, has the maximum nonseizure load PB of over 135 kilograms, has the characteristics of high drop point, low noise and strong adhesivity, can be used for machinery lubrication under the severe operating conditions, such as high temperature, overloading, moist, harmful media and the like and can be used as bearing lubricating grease for bearings operating at a high speed and a superspeed.

Description

technical field [0001] The invention belongs to a preparation method of lubricating grease. Background technique [0002] The relevant parameters of modern mechanical equipment are increasing day by day, the workload is getting heavier, and the working conditions are becoming harsher, which seriously affect the wear and service life of mechanical parts. This harsh lubrication condition is especially prominent for the high-speed bearing industry, because high-speed bearings are very sensitive to wear, and the high-speed bearings run at a high speed, so that the lubricant is not easy to adhere to the rolling surface, and it is easy to scatter. The bearing roller of high-speed bearings The rotation resistance of high-speed bearings is relatively large, so the lubricant used for high-speed bearings is required to have excellent anti-friction and anti-wear properties, so as to reduce the rotation resistance of the bearing rollers of high-speed bearings, firmly adhere to the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M115/08C10N30/06
Inventor 曾玉芬杜守琴王金波李刚
Owner 河北九熙新材料科技有限公司
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