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Composite nano lubricating oil for steel-copper friction pair and preparation method thereof

A technology of lubricating oil and friction pair, which is applied in the field of composite nano lubricating oil and its preparation, can solve the problems of few research reports on composite nano lubricating oil additives, and can reduce the friction coefficient, reduce the width and depth of wear scars, and reduce the friction coefficient. and wear effect

Inactive Publication Date: 2021-06-22
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on nano-lubricating oil additives only focuses on a kind of nano-particles, and most of the applied objects are high-hardness steel-steel friction pairs. There are few research reports on additives

Method used

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  • Composite nano lubricating oil for steel-copper friction pair and preparation method thereof
  • Composite nano lubricating oil for steel-copper friction pair and preparation method thereof

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preparation example Construction

[0043] The present invention also provides a method for preparing a composite nano lubricating oil for a steel-copper friction pair, comprising:

[0044] Step 1, take by weight percentage: Al 2 o 3 Nanoparticles: 0.25wt.%~2.5wt.%, WS 2 Nanoparticles: 0.25wt.%~2.5wt.%, PAO 6 : 90wt.% ~ 99wt.%, oleic acid: 0.5wt.% ~ 5wt.%;

[0045] Step 2, the weighed Al 2 o 3 Nanoparticles and WS 2 Nanoparticles added to PAO 6 Add oleic acid to the base oil to obtain a mixed oil, place the mixture on an overturning oscillator for mechanical vibration treatment, the rotation speed is 30RPM, and the mechanical vibration treatment time is 5min;

[0046] Step 3. Use an ultrasonic cleaning machine to pre-disperse the mixed oil that has undergone mechanical oscillation treatment. The ultrasonic power is 50W, the frequency is 40KHz, and the pre-dispersion treatment time is 5 minutes;

[0047] Step 4. Use an ultrasonic disperser to perform strong dispersion treatment on the pre-dispersed mixed ...

Embodiment 1

[0049] Step 1, take by weight percentage: Al 2 o 3 Nanoparticles: 0.25wt.%, WS 2 Nanoparticles: 0.25wt%, PAO 6 : 99wt.%, oleic acid: 0.5wt.%;

[0050] Step 2, the weighed Al 2 o 3 Nanoparticles and WS 2 Nanoparticles added to PAO 6 Add oleic acid to the base oil to obtain a mixed oil, place the mixture on an overturning oscillator for mechanical vibration treatment, the rotation speed is 30RPM, and the mechanical vibration treatment time is 5min;

[0051] Step 3. Use an ultrasonic cleaning machine to pre-disperse the mixed oil that has undergone mechanical oscillation treatment. The ultrasonic power is 50W, the frequency is 40KHz, and the pre-dispersion treatment time is 5 minutes;

[0052] Step 4. Use an ultrasonic disperser to perform strong dispersion treatment on the pre-dispersed mixed oil. The ultrasonic power is 400W. Each working cycle includes: mixing for 2S and stopping for 4S. The strong dispersion treatment time is 15min to obtain a composite nano lubricating ...

Embodiment 2

[0057] Step 1, take by weight percentage: Al 2 o 3 Nanoparticles: 0.5wt.%, WS 2 Nanoparticles: 0.5wt%, PAO 6 : 98wt.%, oleic acid: 1wt.%;

[0058] Step 2, the weighed Al 2 o 3 Nanoparticles and WS 2 Nanoparticles added to PAO 6 Add oleic acid to the base oil to obtain a mixed oil, place the mixture on an overturning oscillator for mechanical vibration treatment, the rotation speed is 30RPM, and the mechanical vibration treatment time is 5min;

[0059] Step 3. Use an ultrasonic cleaning machine to pre-disperse the mixed oil that has undergone mechanical oscillation treatment. The ultrasonic power is 50W, the frequency is 40KHz, and the pre-dispersion treatment time is 5 minutes;

[0060] Step 4. Use an ultrasonic disperser to perform strong dispersion treatment on the pre-dispersed mixed oil. The ultrasonic power is 400W. Each working cycle includes: mixing for 2S and stopping for 4S. The strong dispersion treatment time is 15min to obtain a composite nano lubricating oi...

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Abstract

The invention discloses composite nano lubricating oil for a steel-copper friction pair. The composite nano lubricating oil is prepared from the following components in percentage by weight: 0.25-2.5 wt.% of Al2O3 nano particles, 0.25-2.5 wt.% of WS2 nanoparticles, 90-99wt.% of base lubricating oil and 0.5-5wt.% of dispersing agent. The friction coefficient and the abrasion loss between a steel-copper friction pair with large hardness difference can be effectively reduced. The invention further provides a preparation method of the composite nano lubricating oil for the steel-copper friction pair, Al2O3 nano particles and WS2 nano particles can be uniformly dispersed in PAO6 base lubricating oil, and the friction reduction and wear resistance of the base oil can be remarkably improved.

Description

technical field [0001] The invention relates to a composite nano lubricating oil for steel-copper friction pairs and a preparation method thereof, belonging to the technical field of lubrication. Background technique [0002] According to incomplete statistics, nearly half of the world's energy is consumed by friction, more than 80% of mechanical parts fail due to wear, and about 50% of mechanical equipment has major accidents due to lubrication failure. In order to reduce energy consumption and economic losses caused by friction and wear, the development of high-performance lubricating oil has always been a hot spot in the world, and the development of high-quality lubricating oil additives is one of the key issues. With the rapid development of nanomaterial preparation technology, nanoscale particles play an increasingly important role in improving the tribological properties of lubricating oil. The main anti-friction and anti-wear mechanisms include: 1. "miniature bearin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06
CPCC10M169/04C10M2201/062C10M2201/065C10M2205/0285C10M2207/126
Inventor 王丙旭胡明杨金林崔威威张宇胡子瑞
Owner ZHEJIANG SCI-TECH UNIV