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Preparation method and application of functionalized graphene capable of improving performance of lubricating oil

A technology of lubricating oil and graphene, applied in the polymer and its application field, can solve the problems of precipitation, easy agglomeration of graphene, inability to stably disperse for a long time, etc., to reduce friction coefficient, small sheet diameter, improve lubrication and mechanical The effect of repairing performance

Active Publication Date: 2021-03-19
SHANGHAI LEVSON ENTERPRISE GRP
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Problems solved by technology

However, graphene is easy to agglomerate and precipitate in lubricating oil, and cannot be stably dispersed for a long time, which is a key factor that limits its application in the field of lubricating oil

Method used

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  • Preparation method and application of functionalized graphene capable of improving performance of lubricating oil
  • Preparation method and application of functionalized graphene capable of improving performance of lubricating oil
  • Preparation method and application of functionalized graphene capable of improving performance of lubricating oil

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Embodiment Construction

[0034] The preparation method of the functionalized graphene that can improve the performance of lubricating oil, the specific steps are as follows:

[0035] Step 1. Dissolution: Dissolve the modifier into the solvent and disperse it fully and evenly; among them, the modifier is silane coupling agent KH-550, silane coupling agent KH-560, silane coupling agent KH-570, silane coupling agent Coupling agent KH-580, silane coupling agent KH-590, silane coupling agent A-172, silane coupling agent Si-69, oleic acid, diphenyldimethoxysilane, dimethylmethoxysilane and Any one or a mixture of two or more of octyltrimethoxysilanes may be used. The solvent is any one or a mixture of two or more of acetone, ethanol, methanol, isopropanol, benzene, toluene, chloroform, ether, carbon tetrachloride and carbon disulfide, and the mass ratio of the modifier to the volume of the solvent is 1:20. According to the needs of the experiment, the ratio of modifier mass to solvent volume can be select...

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Abstract

The invention provides a preparation method for functionalized graphene capable of improving lubricating oil performance, and a using method of the previous prepared functionalized graphene in lubricating oil. The functionalized graphene can be stably dispersed in the lubricating oil, and is capable of greatly improving the wear-resisting and self-repairing performance of the lubricating oil. Thefunctionalized graphene prepared by the method is capable of overcoming a dispersion problem of the current graphene in the lubricating oil. Through functionalized modification, the sheet layer edge and the sheet layer intra-defect part of the graphene can be grafted with a long-chain alkane or an amino, an epoxy group, and an olefins micromolecular group, so the graphene and the hydrocarbon lubricating oil have the stable compatibility, and the graphene can be uniformly dispersed in the lubricating oil. In addition, the sheet layers of the functionalized graphene have the same polarity, a mutual repulsive force between the sheet layers is capable of further maintaining the stability of a graphene disperse system.

Description

technical field [0001] The invention belongs to the field of macromolecule and its application, and specifically relates to a preparation method of functionalized graphene that can be stably dispersed in lubricating oil and can greatly improve the wear resistance and self-repairing performance of lubricating oil, and also relates to the functionalized graphene The use of graphene in lubricating oil. Background technique [0002] Friction and wear are ubiquitous in nature, causing more than 50% of the world's primary energy loss due to friction and wear, and wear is one of the main reasons for the scrapping of materials and equipment. In order to reduce friction and wear, people add lubricating oil between workpieces, but the economic loss of tens of billions of yuan is still caused to the country every year due to friction and wear. Therefore, reducing friction, reducing wear, and prolonging the life of parts are the goals that researchers in tribology, chemistry and materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10N30/04C10N30/06
CPCC10M125/02C10N2030/04C10N2030/06
Inventor 段亚强武桐张燕萍赵志国
Owner SHANGHAI LEVSON ENTERPRISE GRP
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