Composite carbon material lubricating additive, super-lubricity lubricant and preparation method and application thereof

A technology of lubricating additives and composite materials, applied in the field of super-slippery lubricants and nanomaterials, can solve the problems of inability to achieve super-slippery behavior, poor lubrication performance of pure water, easy rupture of water films, etc., and achieve good wear resistance and lubrication. Good performance and stable process effect

Inactive Publication Date: 2020-08-28
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the state of boundary lubrication or mixed lubrication, the lubricating performance of pure water itself is poor, and the water film is easy to break, so that the metal surface is in direct contact, that is, solid-solid contact, which greatly limits its application in the field of moving parts and joint fluid lubrication. Applications
The existing use of diamond as a lubricating additive can achieve low friction and cannot achieve super slippery behavior in a macroscopic atmospheric environment.

Method used

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  • Composite carbon material lubricating additive, super-lubricity lubricant and preparation method and application thereof
  • Composite carbon material lubricating additive, super-lubricity lubricant and preparation method and application thereof
  • Composite carbon material lubricating additive, super-lubricity lubricant and preparation method and application thereof

Examples

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preparation example Construction

[0043]In the second aspect, the preparation method of the lubricating additive of the above-mentioned composite carbon material, the specific steps are:

[0044] 1) Mix dopamine hydrochloride solution, water, and Tris solution, then add HCl solution to adjust the pH value, then add nano-diamond colloid aqueous solution, and react to obtain polydopamine-wrapped nano-diamond composite material;

[0045] 2) adding the obtained polydopamine-wrapped nano-diamond composite material into the graphene oxide solution, and reacting to obtain the graphene oxide / polydopamine / nano-diamond composite material;

[0046] Or, 3) the graphene oxide / polydopamine / nanodiamond composite material obtained in step 2) is repeated successively in step 1) in the reaction mixed with dopamine hydrochloride, water, Tris solution, HCl solution and in step 2).

[0047] In some embodiments of the present invention, the reaction mixture obtained in step 3) is centrifuged, the supernatant is removed, and then fr...

Embodiment 1

[0071] 1) Prepare graphene oxide by Hummer method: first, cool the dry flask of 1000mL in ice-water bath for 5min, then add 100mL of analytically pure sulfuric acid, add 2g flake graphite, 1.8g copper nitrate, 5.4g sodium chlorate ( 2g flake graphite, 1.2g sodium nitrate, 8.0g potassium permanganate), control the reaction temperature at 5°C, and stir for 2h. Then, the flask was taken out, placed on a collector type constant temperature heating stirrer, and stirred and reacted at 35° C. for 2 h. Finally, 150 mL of deionized water was added, and then the reaction temperature was raised to 95° C. with a thermostat heating stirrer, and the stirring was continued for 1 h to obtain a graphite oxide solution. Prepare the required concentration by diluting as needed, and ultrasonically vibrate for 2 hours to obtain the graphene oxide solution with the required concentration.

[0072] 2) Prepare a 0.1 g / mL nano-diamond colloid aqueous solution in a 100 mL beaker, and then prepare 5.0 ...

Embodiment 2

[0075] The difference from Example 1 is that the concentration of the graphene oxide solution in step 3) is 1.0 mg / mL.

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Abstract

The invention relates to a composite carbon material lubricating additive, a super-lubricity lubricant and a preparation method and application thereof. The additive is of a spherical structure and has a composite layer structure sequentially comprising a nano-diamond layer, a polydopamine layer and a graphene oxide layer from inside to outside or a composite layer structure sequentially comprising a nano-diamond layer, a polydopamine layer, a graphene layer and a polydopamine layer from inside to outside, the number of the composite layers is one or more, and the multi-layer structure is formed by repeatedly overlapping a plurality of the composite layers. The preparation process comprises the following steps: mixing a dopamine hydrochloride solution, water and a Tris solution; then adding an HCl solution, mixing to obtain the polydopamine-coated nano-diamond composite material, reacting the polydopamine-coated nano-diamond composite material with graphene oxide to obtain a graphene oxide / polydopamine / nano-diamond composite material, and mixing the graphene oxide / polydopamine / nano-diamond composite material with water to obtain the super-lubricity lubricant with a friction factorof 0.003.

Description

technical field [0001] The invention belongs to the field of nano-materials and the technical field of super-water-sliding lubricants, and in particular relates to a lubricating additive of a composite carbon material, a super-water-sliding lubricant and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The lubrication of many key components such as motor vehicles and micro-nano mechanical components can help reduce wear and avoid component failure and material loss. The existing solid and liquid lubricants rarely achieve super Skate behavior. [0004] As people pay more and more attention to environmental issues, water as a lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M173/02C10M177/00F16N15/02F16N15/04C10N30/06
CPCC10M161/00C10M173/02C10M177/00F16N15/02F16N15/04C10M2201/02C10M2201/041C10M2217/046
Inventor 车清论梁森张建军徐洋吕滨江崔宁王进
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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