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Lubricating grease composition for motor bearing of high-speed dust collector and preparation method

A grease composition and a technology for motor bearings, applied in the field of grease, can solve problems such as service life to be explored, and achieve the effects of ensuring service life, improving low-noise performance, and long lubricating cycle

Inactive Publication Date: 2018-12-21
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polyurea grease has excellent high and low temperature performance and oxidation resistance, but the service life of polyurea grease under continuous high-speed and high-temperature conditions remains to be explored
At present, high-end vacuum cleaner motor bearings mostly use foreign imported grease, and there is no polyurea bearing grease with a good life under high temperature and high speed conditions in the domestic market

Method used

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  • Lubricating grease composition for motor bearing of high-speed dust collector and preparation method
  • Lubricating grease composition for motor bearing of high-speed dust collector and preparation method
  • Lubricating grease composition for motor bearing of high-speed dust collector and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Add 40 g of diisocyanate in the thickener to 439.5 g of base oil, the base oil is polyalphaolefin synthetic oil, and 60 g of organic amine is added to another part of 439.5 g of base oil, and the temperature of the two reactors is raised to 60°C, keep the temperature for 10 minutes, put the two tanks of materials into the reactor, stir and heat to 66°C, react for 1h±5min, slowly raise the temperature to the highest refining temperature of 180°C to form a dipolyurea thickener with interlaced tubular fiber structure, control the temperature rise The time is between 1.5h and 2h. When the temperature rises to 160°C-170°C, add 10g of antioxidant aromatic amine alkylated diphenylamine; after the material naturally cools down to below 80°C, add 10g of antiwear agent diphosphite For n-butyl ester, add 1g of lithium dinonylnaphthalenesulfonate as an anti-rust agent, stir evenly, and carry out post-treatment, after cooling to room temperature, detect the noise level of t...

Embodiment 2

[0035] Example 2 Add 48g of diisocyanate in the thickener to 439.5g of base oil, the base oil is ester oil, add 72g of organic amine to another part of 439.5g of base oil, and raise the temperature of the two reactors to 60°C After 10 minutes of constant temperature, put the two cans of materials into the reactor, stir and heat to 66°C, react for 1h±5min, slowly raise the temperature to the highest refining temperature of 180°C to form a dipolyurea thickener without fiber crystal structure, control the heating time at Between 1.5h and 2h, when the temperature rises to 160°C-170°C, add 10g of antioxidant aromatic amine alkylated diphenylamine; after the material naturally cools down to below 80°C, add 10g of anti-wear agent di-n-butyl phosphite Add 1g of lithium dinonylnaphthalene sulfonate as an antirust agent, stir evenly, and carry out post-processing. After cooling to room temperature, the noise level of the product is tested, and the finished product is packed in cans.

Embodiment 3

[0036] Example 3 Add 56g of diisocyanate in the thickener to 414g of base oil, the base oil is polyalphaolefin synthetic oil, add 84g of organic amine to another part of 414g of base oil, and raise the temperature of the two reactors to 60°C After 10 minutes of constant temperature, put the two cans of materials into the reactor, stir and heat to 66°C, react for 1h±5min, slowly raise the temperature to the highest refining temperature of 180°C to form a dipolyurea thickener without fiber crystal structure, control the heating time at Between 1.5h and 2h, when the temperature rises to 160°C-170°C, add 10g of antioxidant aromatic amine alkylated diphenylamine and 5g of 2,6-di-tert-butyl-p-cresol; wait for the material to cool down naturally After the temperature is below 80°C, add 5g of di-n-butyl phosphite and 10g of tricresyl phosphate as anti-wear agent; add 1g of lithium dinonylnaphthalenesulfonate and 1g of barium dinonylnaphthalenesulfonate as anti-rust agent, stir evenly a...

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Abstract

The invention provides lubricating grease composition for a motor bearing of a high-speed dust collector and a preparation method. The lubricating grease composition contains base oil, a thickening agent and additives. With adoption of polyurea as the thickening agent, the lubricating grease composition has better oxidation resistance, thereby guaranteeing longer lubricating cycle, meanwhile, high-temperature property is outstanding, and the applicable temperature range is wider; with introduction of a metal-containing antiwear agent, extreme-pressure antiwear property of polyurea lubricatinggrease is greatly improved, and the lubricating grease is applicable to places with higher requirement for the extreme-pressure antiwear property; with addition of a preferred amine or phenolic antioxidant, the lubricating grease has longer oxidation induction time, and the long service life of each of the lubricating grease and the bearing can be guaranteed. The lubricating grease product for themotor bearing of the high-speed dust collector is used in an environment with high temperature and high rotating speed, has excellent high-temperature oxidation stability, good low noise performanceand long high-temperature service life, and can have the vibration-reducing, antiwear and protecting effects.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a lubricating grease composition for high-speed vacuum cleaner motor bearings and a preparation method. Background technique [0002] With the development of the main engine industry, users have gradually turned to the demand for high precision, low noise and long service life of bearing products. Grease is one of the important components of sealed bearings, and with the improvement of bearing machining accuracy, the bearing industry has higher and higher requirements for grease performance, especially high-temperature and long-life grease with low noise characteristics is more and more popular favor. [0003] Grease is a plastic lubricant composed of thickener, base oil and additives, with semi-fluid properties. The thickener is dispersed in the base oil, and the function of the additive is to improve the related properties of the grease. The output and usage of lu...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M169/06C10M119/24C10N30/06C10N30/08C10N30/10C10N30/12C10N40/02C10N50/10
CPCC10M119/24C10M169/00C10M169/06C10M2217/0456C10N2030/06C10N2030/08C10N2030/10C10N2030/12C10N2030/76C10N2040/02C10N2050/10
Inventor 陈芳蕾韩鹏吴宝杰刘建龙
Owner CHINA PETROLEUM & CHEM CORP
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