Urea-based lubricating grease composition for electric hammer cylinder and preparation method thereof

A lubricating grease composition and electric hammer technology, applied in the field of lubricating grease, can solve the problems of not being able to better meet the lubrication conditions of the electric hammer cylinder, and the high-temperature performance of the lubricating grease needs to be improved, so as to achieve good anti-corrosion protection effect and anti-oxidation performance Good, the effect of improving shear stability

Pending Publication Date: 2021-03-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN1465680A discloses a preparation method of urea-based grease and thickener. Organic amine and isocyanate are mixed and reacted at 10-130°C, and a good lubricating effect of urea-based grease has been obtained, but it is still not satisfactory. The lubrication condition of the electric hammer cylinder; Chinese patent CN1600843A discloses a preparation method of polyurea-lithium-based grease, which enables urea-based and lithium-based grease to be produced in the same reactor, which simplifies the preparation process, but the preparation Grease high temperature performance needs to be improved

Method used

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  • Urea-based lubricating grease composition for electric hammer cylinder and preparation method thereof
  • Urea-based lubricating grease composition for electric hammer cylinder and preparation method thereof
  • Urea-based lubricating grease composition for electric hammer cylinder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Including the following steps: 890g PAO20 (40 ℃ viscosity 168mm 2 / s) into the reaction kettle, heat up to 62°C, add 91.2g of diphenylmethane diisocyanate, stir rapidly at constant temperature for 10min; at the same time, use 628g of PAO20 to dissolve 75.3g of octylamine and 13.6g of aniline, and heat up to 65°C; The final octylamine / aniline solution was slowly and uniformly added to the reactor, and then the temperature was raised to 100°C to start a constant temperature reaction, and the reaction time was 60 minutes; then the temperature in the kettle was raised to 190°C, kept at a constant temperature for 10 minutes, and then the kettle was poured to cool down; the temperature dropped to 100 Below ℃, use the remaining 300g base oil to adjust the grease consistency; when the temperature drops to 70℃, add 40g zinc dialkyl dithiophosphate, 30g Vanlube 855, 50g tert-butyl / octyl diphenylamine, 1g benzotri Azole and 20g molybdenum dialkyldithiocarbamate are ground by a thr...

Embodiment 2

[0026] Blend 890g of blended oil (150BS and HVIⅡ10 hydrogenated base oil at a weight ratio of 47:53, with a viscosity of 178mm at 40°C 2 / s) into the reaction kettle, heat up to 62°C, add 91.2g of diphenylmethane diisocyanate, stir rapidly at constant temperature for 10min; at the same time, dissolve 75.3g of octylamine and 13.6g of aniline with 628g of blending oil, and heat up to 65°C; The dissolved octylamine / aniline solution is slowly and uniformly added to the reactor, and then the temperature is raised to 100°C to start a constant temperature reaction, and the reaction time is 60 minutes; then the temperature in the kettle is raised to 190°C, kept at a constant temperature for 10 minutes, and then the kettle is cooled down; the temperature drops to Below 100°C, use the remaining 300g base oil to adjust the grease consistency; when the temperature drops to 70°C, add 40g zinc dialkyl dithiophosphate, 30g Vanlube 855, 50g tert-butyl / octyl diphenylamine, 1g benzo Triazole an...

Embodiment 3

[0028] Blend 890g of blended oil (150BS and PAO10 base oil at a weight ratio of 60:40, with a viscosity of 180mm at 40°C 2 / s) into the reaction kettle, heat up to 62°C, add 91.2g of diphenylmethane diisocyanate, stir rapidly at constant temperature for 10min; at the same time, dissolve 75.3g of octylamine and 13.6g of aniline with 628g of blending oil, and heat up to 65°C; The dissolved octylamine / aniline solution is slowly and uniformly added to the reactor, and then the temperature is raised to 100°C to start a constant temperature reaction, and the reaction time is 60 minutes; then the temperature in the kettle is raised to 190°C, kept at a constant temperature for 10 minutes, and then the kettle is cooled down; the temperature drops to Below 100°C, use the remaining 300g blending oil to adjust the grease consistency; when the temperature drops to 70°C, add 40g zinc dialkyldithiophosphate, 30g Vanlube 855, 50g tert-butyl / octyl diphenylamine, 1g benzo Triazole and 20g molyb...

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Abstract

The invention provides a urea-based lubricating grease composition for an electric hammer cylinder. The urea-based lubricating grease composition comprises the following components by mass: 6.5%-11.2%of a thickening agent, 2.0%-3.0% of an antioxidant, 0.05% of an antirust agent, and 2.0%-6.0% of an extreme-pressure anti-wear agent, with the balance being base oil, wherein the thickening agent isprepared by subjecting raw materials consisting of octylamine, aniline and diphenylmethane diisocyanate to an addition reaction, and the viscosity range of the base oil at 40 DEG C is 168-180 mm<2>/s.According to the urea-based lubricating grease composition for the electric hammer cylinder, the shear stability of lubricating grease is improved, the lubricating grease has the characteristics of good oxidation resistance, good wear resistance, good corrosion resistance, good protection effect and the like, the lubricating working condition of the electric hammer cylinder can be better met, theuse temperature range of the lubricating grease is 20-180 DEG C, and the lubricating grease has wide popularization value.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to a urea-based electric hammer cylinder lubricating grease composition and a preparation method thereof. Background technique [0002] In modern industry, lubricating grease is widely used. With the continuous development of industrialization, there are higher and higher requirements for the performance of lubricating grease. The urea-based lubricating grease composition has various excellent properties and meets various The use requirements of harsh conditions are currently widely used in various industries. [0003] Since the electric hammer cylinder has the characteristics of large vibration, high temperature, and high-frequency sliding friction in the cylinder when the electric hammer is running, the grease composition applied to the electric hammer cylinder needs to have good shear resistance and anti-slip properties. Comprehensive properties such as grinding perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/10C10N30/12
CPCC10M169/048C10M2215/04C10M2215/06C10M2215/14C10M2215/064C10M2215/225C10M2219/068C10M2223/045C10M2205/0225
Inventor 黄江民童刘
Owner CHINA PETROLEUM & CHEM CORP
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