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Gear oil composition and preparation method thereof

A technology of composition and gear oil, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of general extreme pressure and anti-wear performance, accelerated oil product failure, shortened life and other problems, achieve good anti-oxidation ability, improve The effect of oil change interval and improving service life

Active Publication Date: 2013-07-17
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with other types of lubricants that do not require high extreme pressure and anti-wear properties, gear oils have more stringent requirements for the synergistic effect of antioxidants to ensure the dual performance of extreme pressure, anti-wear and anti-oxidation. However, now The gear lubricating oil products used often can only meet the needs of one aspect, and lose sight of the other
Chinese patent application CN200710178191.0 discloses a new type of lubricating oil composition that can be used as industrial gear oil. Although it has good oxidation stability, its extreme pressure and anti-wear performance is average (wherein PB is 921N and PD is 2450N). It will also accelerate oil failure during operation, wear gears, and reduce service life

Method used

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  • Gear oil composition and preparation method thereof
  • Gear oil composition and preparation method thereof
  • Gear oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Add 100 parts of water-insoluble polyether base oil Emkarox VG222 (Croda Company, Inc, the same below) into a stainless steel mixing kettle with agitator, keep the temperature of the kettle at 40°C, and then add 0.6 parts of Naugalube TMQ (2,2 , 4-trimethyl-1,2-dihydroquinoline antioxidant, Uniroyal Chemical Company, Inc. the same below), 0.08 parts of metal deactivator benzotriazole derivative T551 (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., the same below), 1 part of antiwear agent nonyl phosphate amine salt mixture Irgalube349 (Ciba Specialty Chemicals Inc), 0.5 part of extreme pressure agent aminothioester T323 (Jinzhou Tianbu Lubricating Oil Additive Co., Ltd.), 0.002 part T901 methyl silicone oil (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., the same below), 0.003 parts of demulsifier propylene oxide / ethylene oxide block copolymer 5957 (Lubrizol Petroleum Chemical Company, the same below) was added into the blending kettle, started to stir until t...

Embodiment 2

[0062] Add 100 parts of water-insoluble polyether base oil Emkarox VG222 (Croda Company, Inc, the same below) into a stainless steel blending kettle with a stirrer, keep the temperature of the kettle at 40°C, and then add 0.8 parts of Naugalube TMQ, 0.1 parts of Metal deactivator T551, 1 part of antiwear agent tricresyl phosphate, 0.4 part of extreme pressure agent vanlube972 (2,5-dimercapto-1,3,4-thiadiazole dimer and butoxy triethylene glycol Compound, R.T.Vanderbilt Holding Company, Inc), 0.003 parts of T901, 0.005 parts of demulsifier Add 5957 into the blending kettle, start stirring until the mixture is completely dissolved, uniform and transparent, and the finished gear oil D is obtained.

[0063] The obtained gear oil compositions A, B, C and D are verified in Table 1 by test results.

[0064] Table 1

[0065]

[0066] The results of the data in Table 1 show that 2,2,4-trialkyl-1,2-dihydroquinoline antioxidants and metal deactivators have a certain antioxidant syn...

Embodiment 3

[0068]Except that the extreme pressure agent was changed to sulfurized isobutylene, the rest were the same as in Example 2 to obtain the finished gear oil E. The anti-oxidation performance of the oil is evaluated by differential scanning calorimetry (DSC) test, test conditions: the test sample weighs 2.00 mg, the oxygen flow rate is 100 ml / min, and in the dynamic test, the heating rate is 5 °C / min. In the static oxidation test, the temperature was 200°C. The test results of the oxidation test are shown in Table 2.

[0069] Table 2

[0070]

[0071] It can be concluded from the table that the gear oil composition of the present invention has outstanding high temperature oxidation resistance.

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Abstract

The invention provides a gear oil composition and a preparation method thereof. The gear oil composition comprises lubricating oil base oil and a 2, 2, 4-trialkyl-1, 2-bihydroquinoline antioxygen and a metal deactivator. The gear oil composition provided by the invention has excellent oxidation stability and extreme pressure antiwear property, and meanwhile has excellent low temperature mobility, viscosity-temperature characteristics, shearing stability and anti-bubbling property, good comprehensive performance, and is simple in preparation method and wide in application range.

Description

technical field [0001] The present invention relates to a gear oil composition, more specifically, relates to a gear oil composition with super strong high-temperature anti-oxidation stability and excellent extreme-pressure anti-wear properties. Background technique [0002] With the requirements of gear design accuracy, streamlined design and other factors, the operating temperature and bearing load of gears are getting higher and higher, the tolerance between gears is getting smaller and smaller, and the tangential speed of gears is accelerating. Therefore, the development trend of the new generation of gear oil is to have more excellent oxidation stability and thermal stability to ensure or extend the oil change interval of the oil, and at the same time, it must have better extreme pressure and anti-wear properties, better Anti-friction and energy-saving characteristics. [0003] Generally, extreme pressure and antiwear agents (EP&AW) containing sulfur, phosphorus, and c...

Claims

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Application Information

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IPC IPC(8): C10M161/00C10M133/40C10N30/10
Inventor 张连惠范海粉王瑞霞王瑞兴
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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