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Polyurea lubricating grease and preparation method thereof

A polyurea grease and urea-based technology, applied in the field of polyurea grease, can solve the problems of no extreme pressure, large impact of bearing noise, large particle size, etc., to reduce friction, prolong service life, and reduce friction factors Effect

Inactive Publication Date: 2014-04-23
SUZHOU HUIFENG LUBRICANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, all lithium base greases can also be seen in the literature, such as CN1017344B (friction-reducing type hybrid lithium base grease), additives are diphenylamine antioxidant, alkylamine rust inhibitor and dibutyl phthalate oiliness agent (addition amount is 0.25-5%), the additive combination recommended by this patent does not have extreme pressure properties
As another example, U.S. Patent No. 6,376,432 adds an additive containing multi-effect agent thiocarbamate metal salt, and the addition amount is 0.5%-30%, but the particle size of the additive combination is relatively large, which has a great impact on the noise of the bearing

Method used

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  • Polyurea lubricating grease and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, the 100°C viscosity of 12mm, which accounts for 70% of the weight of polyurea grease, is 2 Put two-thirds of 500SN mineral oil per second and urea-based thickener accounting for 20% of the weight of polyurea grease into a container with a stirring container and a heater and heat it to 70°C, and turn it on when it is heated to 70°C The stirrer was stirred at a speed of 300rpm for 25min. After the stirring was completed, the temperature was raised to 140°C, and the temperature was kept for 60min. After the heat preservation was completed, the temperature was raised to 170°C again and then stirred. Then after the stirring is finished, heat up and stir further, the temperature of the heat rise is 200°C, the stirring speed is 200rpm, the stirring time is 25min, and the remaining (remaining) 1 / 3 is added during the stirring process The aforementioned 500SN mineral oil, and the remaining 1 / 3 of the 500SN mineral oil is added within 3min, then under stirring and in a cir...

Embodiment 2

[0021] First, the viscosity of 5mm at 100°C, which accounts for 54% of the weight of polyurea grease, is 2 / s olefin oil with a viscosity of 10mm at 100°C2 2 / 3 of the 100SN mineral oil mixed at a weight ratio of 1:1 and the urea-based thickener accounting for 30% of the weight of polyurea grease are put into a container with a stirring container and a heater and heated to 75°C When heating to 75°C, turn on the stirrer and stir at a speed of 100rpm for 35min. After the stirring is completed, the temperature is raised to 120°C, and the heat preservation is carried out for 120min. Then the time of stirring is 50min, and then heat up and then stir after stirring finishes, then the temperature of further heating is 190 ℃, and then the speed of stirring is 300rpm, and then the time of stirring is 20min, add remaining ( The remaining one-third of the mixture of the aforementioned olefin oil and mineral oil, and the remaining one-third of the mixture of olefin oil and mineral oil was ...

Embodiment 3

[0023] First, the 100°C viscosity of 30mm at 100°C, which accounts for 89% of the weight of polyurea grease 2 Two-thirds of the vegetable oil per s and the urea-based thickener accounting for 10% of the weight of polyurea grease are put into a container with a stirring container and a heater and heated to 80°C. When heated to 80°C, turn on the agitator and Stir at a speed of 200rpm for 30min, heat up to 130°C after stirring, and keep warm for 100min. Then heat up and then stir, the temperature of this heat up is 195°C, the speed of stirring is 100rpm, the time of stirring is 30min, and the remaining (remaining) 1 / 3 of the aforementioned vegetable oil is added in the process of stirring , and the remaining one-third of the vegetable oil was added within 0.5min, then cooled to 105 ° C, and then added fluorinated graphite with a particle size of 50 μm accounting for 1% by weight of polyurea grease, and stirred again, the The speed of re-stirring is 200rpm, and the time of re-sti...

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Abstract

The invention provides a polyurea lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease. The polyurea lubricating grease comprises the following components in percentage by weight of polyurea lubricating grease: 10 to 30% of urea-based thickener, 54 to 89% of base oil, and 1 to 16% of additive, wherein the additive is carbon monofluoride. The polyurea lubricating grease has the advantages that the friction is reduced; the lubricating performance is improved; the performances on resisting abrasion, reducing friction and resisting extreme pressure are improved; the friction factors of a bearing running under a high temperature are reduced; the energy consumption is lowered; the consumption of lubricating grease is reduced, and thus the service life of the lubricating grease is prolonged; in addition, the oxidization stability, heat stability and comprehensive performances of the polyurea lubricating grease are also improved. The preparation method is simple in process and small in requirements on process factors, and realizes overall embodiment of the technical effect of the polyurea lubricating grease.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular relates to a polyurea lubricating grease, and also relates to a preparation method thereof. Background technique [0002] Because polyurea grease has comprehensive properties such as high dropping point, good mechanical shear stability, anti-rust and anti-sedimentation, especially outstanding oxidation stability, thermal stability and long service life, it is widely used in steel industry, automobile It has been widely used in various fields such as industry, electrical equipment, and national defense industry, and has become a development direction of high-performance lubricating grease varieties in the world today. With the rapid development of the bearing industry, lubricating grease is required to have good anti-wear and anti-friction properties to reduce equipment driving power, save energy consumption and increase service life. Anti-wear and anti-friction greases i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N30/06C10N30/10
Inventor 耿飞惠进德惠泽民
Owner SUZHOU HUIFENG LUBRICANT
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