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A kind of nano-carbon material composite additive based on surface modification and preparation method thereof

A technology of nano-carbon materials and composite additives, applied in the nano field, can solve the problems such as the dispersion stability not reaching the desired effect, etc.

Active Publication Date: 2022-05-13
XINJIANG INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned technologies, the method of surface grafting of nano-carbon materials is mainly used to improve the dispersion stability of nano-carbon materials in lubricating base oil to a certain extent, but its dispersion stability still does not achieve the desired effect

Method used

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  • A kind of nano-carbon material composite additive based on surface modification and preparation method thereof
  • A kind of nano-carbon material composite additive based on surface modification and preparation method thereof
  • A kind of nano-carbon material composite additive based on surface modification and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] A preparation method based on a surface-modified nano-carbon sphere composite additive, comprising the steps of:

[0062] 1 g of carbon nanospheres after acidification treatment was added to 60 g of ricinoleic acid, and 0.09 g of catalyst zinc oxide was added. React at 200°C for 10 hours under vacuum conditions; cool naturally after the reaction, and ultrasonically disperse at room temperature for 15 minutes to obtain a surface-modified nano-carbon material-ricinoleic acid composite anti-wear additive.

Embodiment 2

[0064] A preparation method based on a surface-modified carbon nanotube composite additive, comprising the steps of:

[0065] 1 g of acidified carbon nanotubes was added to 60 g of ricinoleic acid, and 0.09 g of catalyst zinc oxide was added. React at 200° C. for 10 hours under vacuum conditions; cool naturally after the reaction, and ultrasonically disperse at room temperature for 15 minutes to obtain a surface-modified carbon nanotube-ricinoleic acid composite anti-wear additive.

Embodiment 3

[0067] A preparation method based on a surface-modified graphene oxide composite additive, comprising the steps of:

[0068] 1 g of acidified graphene oxide was added to 60 g of ricinoleic acid, and 0.09 g of catalyst zinc oxide was added. React at 200°C for 10 hours under vacuum conditions; cool naturally after the reaction, and ultrasonically disperse at room temperature for 15 minutes to obtain a surface-modified graphene oxide-ricinoleic acid composite anti-wear additive.

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Abstract

The invention relates to the field of nanotechnology, and specifically discloses a surface-modified nano-carbon material composite additive and a preparation method thereof. The nano-carbon material composite additive based on surface modification of the present invention includes nano-carbon material, ricinoleic acid and catalyst, wherein the nano-carbon material has been acidified, and the acidified nano-carbon material has abundant hydroxyl groups and ricinoleic acid molecules It has both hydroxyl and carboxyl groups in its structure. In the presence of a catalyst, ricinoleic acid can graft ricinoleic acid molecules on the surface of nano-carbon materials through esterification reaction with the hydroxyl groups on the surface of nano-carbon materials; at the same time, ricinoleic acid molecules self-polymerize to form a Grinding and dispersing polyricinoleic acid. The experimental results show that the modified nano-carbon material ricinoleic acid composite anti-wear additive system of the present invention has more excellent anti-wear performance.

Description

technical field [0001] The invention relates to the field of nanotechnology, in particular to a surface-modified nano-carbon material composite additive and a preparation method thereof. Background technique [0002] Nano-carbon materials are used as lubricating oil anti-wear additives. The dispersed phase dispersed in lubricating oil can fully interact with the friction surface, and its "ball bearing" function of supporting load can greatly reduce the friction coefficient. Many experimental studies have shown that spherical or tubular carbon nanoparticles have great advantages in the application of lubricating oil tribology. These nano-carbon materials will form a protective film on the metal sliding surface, and through the "micro-ball" or "roller", the surface strengthening and self-repairing effects improve the anti-wear performance of the lubricating base oil. In addition, nano-carbon materials have good thermal stability and oxidation resistance, which can prolong the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00C10N30/06
CPCC10M161/00C10M2201/14C10M2209/102
Inventor 管述哲刘宣池董孝宇张佳何芳刘锡林
Owner XINJIANG INST OF ENG