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Oil-air lubricating grease and production method thereof

A production method and grease technology, applied in the field of grease, can solve problems such as environmental pollution, non-biodegradability, unsatisfactory use temperature range, etc., and achieve good biodegradation performance, great economic and social benefits, and good biodegradation. performance effect

Inactive Publication Date: 2010-12-22
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of my country's railway industry, the requirements for lubricating grease for railway locomotive wheels are getting higher and higher. The use of oil and gas lubricating grease can prolong the service life of wheel rails, reduce the resistance of rolling stock, increase the speed of locomotives, and reduce failures, but The existing oil and gas grease used for wheel rims is not biodegradable, will pollute the environment, and cannot meet the requirements in terms of operating temperature range, etc.

Method used

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  • Oil-air lubricating grease and production method thereof
  • Oil-air lubricating grease and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Step a) put 86% trimethylolpropane oleate and 6% bentonite into the kettle and mix them without heating and stirring for 20 minutes;

[0056] Step b) adding 2% ethanol by weight and stirring for 60 minutes without heating;

[0057] Step c) heating and stirring the mixture obtained above, raising the temperature to 160° C. for 60 minutes at a constant temperature, then adding 0.3% by weight of diphenylamine, 0.7% of benzotriazole and 3% of colloidal graphite, and stirring for 10 minutes;

[0058] Step d) cooling the mixture obtained in step c) to 50° C., adding 2% by weight of zinc dialkyldithiophosphate, and then stirring for 10 min;

[0059] Step e) Homogenizing the mixture obtained in step d) in a colloid mill for 60 min, with a gap of 40 mm, taking samples during the cycle to measure the consistency of the mixture, and finally the non-working penetration of the mixture is 462;

[0060] Step f) Under 15MPa, the oil-gas lubricating grease obtained after homogenization...

Embodiment 2

[0062] Step a) Put 87% by weight trimethylolpropane oleate and 4% silica gel into the kettle and mix them without heating and stirring for 18 minutes;

[0063] Step b) adding 2% acetic acid by weight, and stirring for 55 minutes without heating;

[0064] Step c) heat up and stir the mixture obtained above, raise the temperature to 162° C. and keep the temperature for 55 minutes, then add 0.5% by weight of diisooctyldiphenylamine, 0.5% of barium dinonylnaphthalenesulfonate and 5% of aluminum powder, Stir for 12 minutes;

[0065] Step d) cooling the mixture obtained in step c) to 60° C., adding 1% by weight tricresyl phosphate, and then stirring for 10 min;

[0066] Step e) Homogenizing the mixture obtained in step d) in a colloid mill for 65 minutes, with a gap of 45 mm, taking samples during the cycle to measure the consistency of the mixture, and finally the non-working penetration of the mixture is 458;

[0067] Step f) Under 20MPa, the homogenized oil-gas lubricating grea...

Embodiment 3

[0069] Step a) put 90% trimethylolpropane oleate and 2% graphite into the kettle and mix them without heating and stirring for 16 minutes;

[0070] Step b) adding 3% glycerin by weight, and stirring for 65 minutes without heating;

[0071] Step c) heat up and stir the mixture obtained above, raise the temperature to 155° C. and keep the temperature for 65 minutes, then add 0.2% by weight of phenyl-α-naphthylamine, 0.8% of benzotriazole and 1% of colloidal graphite, and stir 15min;

[0072] Step d) cooling the mixture obtained in step c) to 50° C., adding molybdenum dialkyldithiocarbamate at a weight percentage of 3%, and then stirring for 10 min;

[0073] Step e) Homogenize the mixture obtained in step d) in a colloid mill for 60 min, with a gap of 35 mm, take a sample during the cycle to measure the consistency of the mixture, and finally the non-working penetration of the mixture is 471;

[0074] Step f) Under 18MPa, the homogenized oil-gas lubricating grease is discharged...

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Abstract

The invention provides oil-air lubricating grease which comprises the following component in percentage by weight: 80-90% of ester oil, 2-6% of inorganic thickener, 2-3% of structure improver, 1-5% of solid lubricating material, 0.2-0.5% of antioxidant, 1-5% of extreme pressure antiwear additive and 0.3-0.8% of anticorrosive agent. Since the oil-air lubricating grease is produced by using the ester oil having good biodegradability and fine high and low temperature performance as the base oil to be mixed with the environment-friendly inorganic thickener and additives, the oil-air lubricating grease has favorable biodegradability, can not cause environmental pollution, has favorable high and low temperature performance and low temperature pumpability, and has favorable extreme pressure wear resistance, thereby meeting the requirements of railway industry for the development direction of the lubricating grease and being capable of bringing more economic benefits and social benefits to railway interests. With the development of railway interests in China, the oil-air lubricating grease has fine application prospects.

Description

technical field [0001] The invention relates to the field of lubricating grease, in particular to an oil-gas lubricating grease and a production method thereof. Background technique [0002] Grease is a thick grease-like semi-solid, which is used in the friction part of the machine to lubricate and seal. It has good adhesion on the metal surface, is not easy to lose, resists rolling, and has certain rust resistance to metal parts. Therefore, grease is used as lubricating material in many parts of construction machinery. [0003] Oil-air lubrication technology is an emerging technology, that is, gas-liquid two-phase fluid cooling lubrication technology. Under the action of compressed air, the lubricant moves forward along the pipe wall in a wave shape and forms a continuous oil film, which is separated from the compressed air. A continuous stream of fine oil droplets is sprayed onto the lubrication point. The application of dry oil lubrication, thin oil lubrication and oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N30/06C10N50/10
Inventor 宗明康健赵玉贞欧阳秋卢现菊毛俊罗玉兰曹毅
Owner CHINA PETROLEUM & CHEM CORP
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