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A kind of organic carbon nanosphere lubricating oil additive and its preparation method and application

A lubricating oil additive, organic carbon technology, applied in the directions of additives, nanotechnology, nanotechnology, etc., can solve the problems of poor dispersion stability of nanoparticles, reduced nanoparticle stability, complex process, etc. The effect of increasing the frictional contact area

Active Publication Date: 2021-12-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of this method is more complicated, the self-stability of the modified nanoparticles is reduced, and the cost is higher.
Physical methods such as ball milling, ultrasonication, and stirring are also strategies to improve the dispersion of nano-additives in lubricating oil, but they can only be effective for a short period of time and cannot fundamentally solve the problem of poor dispersion stability of nanoparticles in lubricating oil.

Method used

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  • A kind of organic carbon nanosphere lubricating oil additive and its preparation method and application
  • A kind of organic carbon nanosphere lubricating oil additive and its preparation method and application
  • A kind of organic carbon nanosphere lubricating oil additive and its preparation method and application

Examples

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Embodiment 1

[0038] An organic carbon nanosphere lubricating oil additive, comprising an organic carbon nanosphere and a doping element doped on the organic carbon nanosphere by carbonization, the doping element is N element, and the mass percentage of the doping element in the additive is 18.9%.

[0039] Concrete preparation method comprises the following steps:

[0040] S1. Preparation of organic carbon precursor:

[0041] With 0.49mol aniline and 0.38mol pyrrole as reaction monomer, once add the mixed solution that 60ml is made up of deionized water and acetonitrile, stir evenly, wherein, the volume ratio of deionized water and acetonitrile in the mixed solution is 2:1;

[0042] After stirring evenly, the solution was colorless and transparent, and then reacted for 10 hours at 90°C with a stirring speed of 1000rpm. After the reaction was completed, a solid product was precipitated. After filtering and washing the precipitated solid product, it was heated at 80°C for 10 hours drying to...

Embodiment 2

[0046] An organic carbon nanosphere lubricating oil additive, including organic carbon nanospheres and doping elements doped on the organic carbon nanospheres by carbonization, the doping elements are N and S elements, and the mass of the doping elements in the additive The percentage is 26.2%.

[0047] Concrete preparation method comprises the following steps:

[0048] S1, the preparation of organic carbon precursor: the preparation method is exactly the same as that of Example 1;

[0049] S2, the preparation of additive:

[0050] Take 200mg of organic carbon precursor and place it in the center of the tube furnace, put 3g of thiourea at the air inlet of the tube furnace at 180°C to 200°C, and inject N 2 , the flow rate is 80ml / min, after the temperature in the tube furnace is raised from room temperature to 500°C, it is kept for 3h, and the heating rate is 5°C / min, and the organic carbon nanosphere additive (S@CN) containing the dopant source is obtained; Among them, the ...

Embodiment 3

[0052] An organic carbon nanosphere lubricating oil additive, including organic carbon nanospheres and doping elements doped on the organic carbon nanospheres by carbonization, the doping elements are N and P elements, and the mass of the doping elements in the additive The percentage is 23.3%.

[0053] Concrete preparation method comprises the following steps:

[0054] S1, the preparation of organic carbon precursor: the preparation method is exactly the same as that of Example 1;

[0055] S2, the preparation of additive:

[0056] Take 200mg of organic carbon precursor, place it in the center of the tube furnace, put 3g of ammonium hypophosphite at the air inlet of the tube furnace at 180°C to 200°C, and feed N 2 , the flow rate is 80ml / min, after the temperature in the tube furnace is raised from room temperature to 500°C, it is kept for 3h, and the heating rate is 5°C / min, and the organic carbon nanosphere additive (P@CN) containing the doping source is obtained; Among t...

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Abstract

The invention provides an organic carbon nanosphere lubricating oil additive and its preparation method and application, comprising the following steps: S1, dissolving the reaction monomer in the reaction solvent, after mixing fully, placing it at a temperature of 0-90°C, and reacting 3 ~12h, obtain the organic carbon precursor of the polymer; wherein, the reaction monomer is a small molecule compound that can be polymerized into a hypercrosslinked π-bonded conjugated polymer; S2, combine the organic carbon precursor obtained in step S1 with All doping sources are placed in a tube furnace for doping and carbonization to obtain organic carbon nanospheres containing doping sources; wherein, the doping sources are one or more of N sources, S sources, and P sources. By synthesizing organic carbon sources and simply carbonizing and doping N, S, P elements, the dispersion stability of carbon nanosphere additives in base oil can be significantly improved, and N, S, P doping can improve the dispersion stability under high loads. wear resistance.

Description

technical field [0001] The invention relates to the technical field of preparation of lubricating oil additives, in particular to an organic carbon nanosphere lubricating oil additive doped with N, S, and P elements and its preparation method and application. Background technique [0002] In recent years, friction and wear are still the main causes of fatigue fracture and mechanical energy consumption of transmission equipment, and traditional lubricating greases are increasingly unable to meet harsh transmission conditions. Improving the lubricity and anti-wear properties of mechanical systems is crucial to the development of industrialization. Today, in addition to synthetic lubricating oils, optimizing mechanical friction conditions largely depends on the performance of lubricating oil additives. Carbon materials have good lubricating and self-lubricating properties since ancient times, and nano-carbon materials such as fullerenes, carbon nanotubes, graphene, and diamond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10M125/20C10M125/22C10M125/24C10M169/04B82Y30/00B82Y40/00C10N30/06C10N40/04
CPCB82Y30/00B82Y40/00C10M125/02C10M125/20C10M125/22C10M125/24C10M169/04C10N2030/06C10N2040/04
Inventor 叶谦刘沙刘淑娟刘维民
Owner NORTHWESTERN POLYTECHNICAL UNIV
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