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Antifriction and antiwear lubricant oil additive containing nano tungsten disulfide

A lubricating oil additive, tungsten disulfide technology, applied in the field of lubricating oil, can solve the problems of large surface energy, crystal structure, the effect of size and size on anti-wear and anti-friction efficiency, large surface atomic ratio, etc. Improved wear and antifriction properties, outstanding synergistic properties of antiwear and antifriction, good dispersion stability and adaptability

Inactive Publication Date: 2015-04-29
中国人民解放军空军勤务学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the small particle size, large surface atomic ratio, large specific surface area, and large surface energy, nano-solid lubricating particles are in a state of energy instability, and are prone to agglomeration and form precipitation in lubricating oil. Agglomeration will also occur after a period of time, and the effective and stable dispersion of nano-solid lubricating particles in lubricating oil has always been a key problem to be solved
In addition, the crystal structure and size of different nanoparticles will also affect their anti-wear and friction-reducing efficiency, and the compounding adaptability with other additives will also affect the performance of lubricating oil

Method used

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  • Antifriction and antiwear lubricant oil additive containing nano tungsten disulfide
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  • Antifriction and antiwear lubricant oil additive containing nano tungsten disulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0018] Add nano-tungsten disulfide with an average particle size of 50nm, nano-graphite with an average particle size of 35nm, and aminopropyltrimethoxysilane successively into mineral base oil 500SN in different weight percentage concentrations, and after ultrasonic heating and stirring, Examples 1-3 are obtained. , to evaluate the anti-wear and anti-friction properties and dispersion stability of different nano-lubricating oil formulations. Using a four-ball testing machine to measure the average wear scar diameter and friction coefficient to evaluate the anti-wear and anti-friction performance of nano-composite additives in lubricating oil. Test conditions: GCr15 steel ball, rotating speed 1450r / min, room temperature, long grinding time 60min, load 392N . The dispersion stability of nano-additives in base oil, after ultrasonic heating, stirring, dispersing and settling, observe the transparency of the mixed liquid to distinguish the dispersion stability. Test conditions: ul...

Embodiment 4-6

[0022] Nano-tungsten disulfide with an average particle size of 100nm, fullerene carbon with an average particle size of 20nm, and octadecyltrimethoxysilane were successively added to the poly-α-olefin (PAO) base oil in different weight percentage concentrations, and the ultrasonic After heating and stirring, Examples 4-6 were obtained to evaluate the anti-wear and anti-friction properties and dispersion stability of different nano lubricating oil formulations. Use a four-ball testing machine to measure the average wear scar diameter and friction coefficient to evaluate the anti-wear and anti-friction performance of nanocomposite additives in lubricating oil. Test conditions: GCr15 steel balls, rotating speed 1450r / min, room temperature, long grinding time 30min, load 392N . The dispersion stability of nano-additives in base oil, after ultrasonic heating, stirring, dispersing and settling, observe the transparency of the mixed liquid to distinguish the dispersion stability. Te...

Embodiment 5-7

[0026] Nano tungsten disulfide with an average particle size of 60nm, carbon nanotubes with an average particle size of 100nm, and perfluorotrimethoxysilane with different weight percentage concentrations were successively added to the In the lubricating oil with the formulation of the nanometer lubricating oil, after ultrasonic heating and stirring, Examples 4-6 were obtained, and the anti-wear and anti-friction properties and dispersion stability of different nano lubricating oil formulations were evaluated. Using a four-ball testing machine to measure the average wear spot diameter and sintering load to evaluate the anti-wear and anti-friction performance of the nano-additive compound in lubricating oil, the test conditions: GCr15 steel ball, rotating speed 1450r / min, room temperature, long grinding time 60min, load is 490N. The dispersion stability of nano-additives in base oil, after ultrasonic heating, stirring, dispersing and settling, observe the transparency of the mi...

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Abstract

The invention discloses an antifriction and antiwear lubricant oil additive containing nano tungsten disulfide, and belongs to the technical field of lubricant oil. The lubricant oil additive comprises the following components in percentage by weight: 0.5-15% of nano tungsten disulfide, 0.1-5% of a carbon nano additive, 1-20% of a surface modifier and 60-98.4% of basic lubricant oil. The lubricant oil additive disclosed by the invention can remarkably improve antifriction and antiwear performances of the basic lubricant oil, has relatively good dispersion stability in the basic lubricant oil, can be widely applied to lubricant grease of various vehicles and large-sized mechanical equipment, and can contain an extreme-pressure antiwear agent, an antioxidant, a purification dispersant, a corrosion inhibitor and the like.

Description

technical field [0001] The invention relates to an anti-wear and anti-friction lubricating oil additive containing nanometer tungsten disulfide, which belongs to the technical field of lubricating oil and is mainly used for improving the high-temperature anti-wear and anti-friction performance of lubricating oil. It can be widely used in lubricating oil or grease for various vehicles and large mechanical equipment, and the lubricating oil containing this additive can contain extreme pressure antiwear agent, antioxidant, detergent and dispersant and corrosion inhibitor, etc. Background technique [0002] With the rapid development of the automobile industry, the shortage of fuel resources and rising prices, and the increasingly stringent environmental regulations, people are increasingly demanding energy-saving and environmental protection requirements for automotive engine oils. Traditional lubricant additives are facing increasing pressure. challenge. In order to comply wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M125/22C10N30/06
Inventor 胡建强杨士钊郭力谢凤吴楠王玉梅徐克明
Owner 中国人民解放军空军勤务学院
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