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Lubricating grease containing carbon nanotubes and preparation method of lubricating grease

A technology of carbon nanotubes and lubricating grease, which is applied in the field of lubricating grease containing carbon nanotubes and its preparation, can solve the problems of lubricating grease anti-wear performance and high temperature resistance performance, etc. The effect of anti-friction performance

Inactive Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are also some reports about carbon nanotubes in lubricating grease, but most of them highlight the thermal conductivity and electrical conductivity of carbon nanotubes, while there are few reports on the anti-wear performance and high temperature resistance of lubricating grease. The patent aims to develop a bentonite grease containing carbon nanotubes, which promotes the organic combination of nanotechnology and traditional grease to a certain extent

Method used

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  • Lubricating grease containing carbon nanotubes and preparation method of lubricating grease

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Experimental program
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Effect test

Embodiment 1

[0026] Put 24g of treated multi-walled carbon nanotubes and 1080g of paraffin-based mineral base oil into a stirred tank, raise the temperature to 90-100°C under high-speed stirring, and stir at this temperature for 0.5h at high speed. Then reduce the stirring speed, slowly add 60g of organic bentonite, and stir for 20-30 minutes to completely wet the organic bentonite. After the contents of the kettle form a pre-gel, add 36g of propylene carbonate, continue stirring at a high speed for 30-40min, and carry out cyclic shearing until the contents of the kettle form a black and uniform paste-like structure of lubricating grease. During this process, the temperature in the kettle was kept at 80-90°C. Finally, the contents of the kettle are ground by a colloid mill to obtain the finished product.

[0027] The material ratio is described as follows:

[0028] Organic bentonite: 5%;

[0029] Refined paraffinic mineral base oil: 90%;

[0030] Multi-walled carbon nanotubes: 2%;

[...

Embodiment 2

[0033] Put 6g of treated multi-walled carbon nanotubes and 600g of naphthenic mineral base oil into a stirring tank, raise the temperature to 90-100°C under high-speed stirring, and stir at this temperature for 0.5h at high speed. Then reduce the stirring speed, slowly add 70g of organic bentonite, and stir for 20-30 minutes to completely wet the organic bentonite. After the contents of the kettle form a pre-gel, add 30g of propylene carbonate, continue stirring at a high speed for 30-40min, and carry out cyclic shearing until the contents of the kettle form a black and uniform paste-like structure of lubricating grease. During this process, the temperature in the kettle was kept at 80-90°C. Finally, the contents of the kettle are ground by a colloid mill to obtain the finished product.

[0034] The material ratio is described as follows:

[0035] Organic bentonite: 9.9%;

[0036] Refined naphthenic mineral base oil: 85%;

[0037] Multi-walled carbon nanotubes: 0.85%;

[...

Embodiment 3

[0040] Put 15g of treated multi-walled carbon nanotubes and 600g of synthetic hydrocarbon base oil into a stirred tank, raise the temperature to 90-100°C under high-speed stirring, and stir at this temperature for 0.5h at high speed. Then reduce the stirring speed, slowly add 100g of organic bentonite, and stir for 20-30 minutes to completely wet the organic bentonite. After the contents of the kettle form a pre-gel, add 60g of propylene carbonate, continue to stir at a high speed for 30-40min, and carry out circular shearing until the contents of the kettle form a black uniform paste-like grease structure. During this process, the temperature in the kettle was kept at 80-90°C. Finally, the contents of the kettle are ground by a colloid mill to obtain the finished product.

[0041] The material ratio is described as follows:

[0042] Organic bentonite: 12.9%;

[0043] Synthetic hydrocarbon base oil: 77.4%;

[0044] Multi-walled carbon nanotubes: 1.9%;

[0045] Propylene c...

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Abstract

The invention relates to lubricating grease containing carbon nanotubes and a preparation method of the lubricating grease. The lubricating grease comprises bentonite as a thickening agent, refined mineral oil or synthetic oil as base oil, padding of carbon nanotube, and a polarity disperse assisting agent. The preparation method includes the steps of adding the carbon nanotubes treated in all base oil, adding organic bentonite for pre-dispersing, adding propylene carbonate as the polarity disperse assisting agent until a black uniform paste-structured lubricating grease is formed in a reactor, and finally obtaining the lubricating grease product. Compared with conventional bentonite lubricating grease, abrasion resistance performance of the lubricating grease containing carbon nanotubes is remarkably improved, and stability performance of high-temperature rubber bodies of the bentonite lubricating grease can be improved. A new application field is developed in nano lubricating materials for the carbon nanotube.

Description

technical field [0001] The invention relates to a lubricating grease containing carbon nanotubes and a preparation method thereof. The preparation process is special, and the prepared lubricating grease has good high-temperature extreme pressure anti-wear performance. Background technique [0002] At present, nanomaterials have been deeply studied in the field of lubricating oil, but their application in the field of lubricating grease is rarely reported. Some scholars have studied the tribological behavior of several nanoparticles, which proves that nanoparticles have good tribological properties. How to organically integrate advanced nanotechnology with traditional lubricating grease manufacturing and fully reflect its advantages is a problem before us. [0003] Carbon nanotubes are novel carbon nanomaterials discovered at the end of the last century, with structures similar to those of graphite and C 60 Similar, it can be seen as a graphene layer rolled up in a certain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06
Inventor 赵文峰张广辽高艳青吴宝杰李素
Owner CHINA PETROLEUM & CHEM CORP
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