Preparation method of carbon nanotube and graphene compounded lubricating oil
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A carbon nanotube and graphene technology, which is applied in the petroleum industry, lubricating compositions, additives, etc., can solve the problems of high noise, no significant energy saving in fuel consumption, and unsatisfactory anti-wear effect.
Inactive Publication Date: 2017-02-15
SICHUAN CARBON WORLD TECH CO LTD
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[0004] The purpose of the present invention is to provide a preparation method of carbon nanotube and graphene composite lubricating oil, to solve the problem that the friction coefficient of ordinary lubricating oil in the prior art is relatively large, the degree of engine wear is relatively large during use, and the single The anti-wear effect of lubricating oil with carbon nanotubes or single lubricating oil with graphene is not ideal, the noise is relatively large, and the fuel consumption has not achieved significant energy saving. At the same time, graphite has not yet appeared on the market. Oxygen and carbon nanotube compound lubricating oil products
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Embodiment 1
[0031] The preparation method of carbon nanotube and graphene composite lubricating oil, comprises the following steps:
[0032] (1) Treatment of carbon nanotubes
[0033] Take 100 g of multi-walled carbon nanotubes prepared by catalytic cracking of hydrocarbons, add 500 ml of 98% sulfuric acid by volume: 70% nitric acid = 3: 1 mixed acid, and ultrasonically disperse at 60 ° C for 2 hours at a constant temperature. The frequency is 20KHz, then repeatedly rinsed with deionized water, filtered until the pH value is 7, and finally dried at a constant temperature of 60°C for 6 hours, and the processed carbon nanotubes are obtained;
[0034] (2) Graphene treatment
[0035] The graphene prepared by the vapor phase precipitation method is ultrasonically dispersed in a petroleum ether solvent added with a dispersant for 1 hour, and the ultrasonic frequency is 20KHz. After dispersion, the solvent oil is removed, and the treated graphene is obtained;
[0036] (3) Preparation of carbon...
Embodiment 2
[0040] Except that the addition amount of carbon nanotube, graphene, dispersant, emulsifier is different, all the other methods are the same as embodiment 1.
[0041] Wherein: the mass percentage of carbon nanotube is 0.02%, the mass percentage of graphene is 0.03%, the mass percentage of dispersant is 0.04%, and the mass percentage of emulsifier is 0.04%.
Embodiment 3
[0043] Except that the addition amount of carbon nanotube, graphene, dispersant, emulsifier is different, all the other methods are the same as embodiment 1.
[0044] Wherein: the mass percentage of carbon nanotube is 0.05%, the mass percentage of graphene is 0.08%, the mass percentage of dispersant is 0.06%, and the mass percentage of emulsifier is 0.08%.
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Abstract
The invention provides a preparation method of a carbon nanotube and graphene compounded lubricating oil, and solves the technical problem in the prior art that the conventional lubricating oil is relatively large is wear degree for engines, not ideal in anti-wear effect, large in noise and large in fuel consumption. The preparation method comprises the steps of subjecting a carbon nanotube to fatty acid treatment and acidification treatment, and adding graphene into the lubricating oil after the ultrasonic dispersion treatment of graphene. Counted in weight percentage, the lubricating oil comprises 0.004-2.2% of carbon nanotube, 0.004-3.2% of graphene, 0.02-2.2% of dispersing agent, and 0.02-1.2% of emulsifier. The results of performance detection experiments show that, the lubricating oil can reduce the friction, relieve the wear condition, reduce the noise of an engine and save the fuel consumption.
Description
technical field [0001] The invention relates to a method for preparing lubricating oil, in particular to a method for preparing lubricating oil compounded with carbon nanotubes and graphene. Background technique [0002] Since carbon nanotubes and graphene were discovered by the scientific community, these two nanocarbon materials have been widely used as excellent lubricating oil additives due to their good mechanical properties and special structural morphology, and have become a research hotspot in the field of lubrication in recent years . [0003] Many scholars have carried out research in this area, such as using fatty acid and acidified multi-walled carbon nanotubes as lubricating oil additives. The results show that the addition of carbon nanotubes can improve the lubricating performance of lubricating oil, reduce friction, and reduce wear. , some scholars have used carbon nanotubes as water-based lubricant additives to reduce friction and reduce wear. The research ...
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