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Carbon microsphere lubricating liquid antiwear agent and antiwear lubricating liquid

A technology of carbon microspheres and lubricating fluid, applied in the field of lubricating fluid additives, can solve the problems of high manufacturing cost of pitch-based carbon microspheres, poor anti-wear effect of lubricating fluid anti-wear agents, etc., and achieve good surface condition, low price, and easy preparation The effect of simple method

Pending Publication Date: 2020-12-01
吉诺润滑技术(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the shortcomings of the existing pitch-based carbon microspheres, such as high manufacturing cost and poor anti-wear effect when used as a lubricating fluid anti-wear agent, thereby providing a carbon microsphere lubricating fluid anti-wear lubricants and anti-wear lubricants

Method used

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  • Carbon microsphere lubricating liquid antiwear agent and antiwear lubricating liquid
  • Carbon microsphere lubricating liquid antiwear agent and antiwear lubricating liquid

Examples

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Effect test

Embodiment 1

[0030] This embodiment provides a kind of carbon microsphere lubricating liquid antiwear agent, is prepared by the following method:

[0031] Using coal-based pitch as raw material, under the pressure of 500 °C and 0.5 MPa, undergo thermal condensation reaction for 5 hours to obtain mesophase pitch carbon microspheres with a particle size of about 20 microns;

[0032] In an air atmosphere, the mesophase pitch carbon microspheres were pre-oxidized at 280°C for 2 hours;

[0033] Under a nitrogen atmosphere, heat-treat the pre-oxidized mesophase pitch carbon microspheres at 1000°C for 2 hours to obtain carbon microspheres;

[0034] Put the carbon microspheres in a mixed solution of sulfuric acid and nitric acid with a volume ratio of 1:1, and heat to 80°C to oxidize the surface of the carbon microspheres for 6 hours;

[0035] Disperse the carbon microspheres after surface oxidation treatment in tetrahydrofuran, add octadecylamine as a modifier, and react at 150°C for 6 hours to ...

Embodiment 2

[0039] This embodiment provides a kind of carbon microsphere lubricating liquid antiwear agent, is prepared by the following method:

[0040] Using petroleum asphalt as raw material, at 350°C and 1.5MPa pressure, undergo thermal condensation reaction for 12 hours to obtain mesophase pitch carbon microspheres with a particle size of about 30 microns;

[0041] In an air atmosphere, the mesophase pitch carbon microspheres were pre-oxidized at 350 °C for 1 h;

[0042] Under a nitrogen atmosphere, heat-treat the pre-oxidized mesophase pitch carbon microspheres at 2000°C for 1 hour to obtain carbon microspheres;

[0043] Put the carbon microspheres in a mixed solution of sulfuric acid and nitric acid with a volume ratio of 2:1, and heat to 150°C to oxidize the surface of the carbon microspheres for 5 hours;

[0044] Disperse the surface oxidized carbon microspheres in toluene, add oleic acid as a modifier, and react at 120°C for 12 hours to obtain a lubricating liquid antiwear agen...

Embodiment 3

[0048] This embodiment provides a kind of carbon microsphere lubricating liquid antiwear agent, is prepared by the following method:

[0049] Using coal-based pitch as raw material, under the pressure of 500°C and 2 MPa, undergo thermal condensation reaction for 10 hours to obtain mesophase pitch carbon microspheres with a particle size of about 30 microns;

[0050] In an air atmosphere, the mesophase pitch carbon microspheres were pre-oxidized at 200°C for 5h;

[0051] Under a nitrogen atmosphere, heat-treat the pre-oxidized mesophase pitch carbon microspheres at 500°C for 5 hours to obtain carbon microspheres;

[0052] Put the carbon microspheres in a mixed solution of sulfuric acid and nitric acid with a volume ratio of 1:2, and heat to 50°C to oxidize the surface of the carbon microspheres for 12 hours;

[0053] Disperse the carbon microspheres after surface oxidation treatment in N-methylpyrrolidone, add stearic acid as a modifier, and react at 50°C for 24 hours to obtai...

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Abstract

The invention relates to a carbon microsphere lubricating liquid anti-wear agent and an anti-wear lubricating liquid, the anti-wear agent is prepared by the following method: making asphalt undergo athermal polycondensation reaction under high temperature and high pressure conditions to obtain mesophase asphalt carbon microspheres, in an air atmosphere, heating the mesophase pitch carbon microspheres for pre-oxidation treatment, under the protection of inert gas, carrying out high-temperature heat treatment on the pre-oxidized mesophase pitch carbon microspheres to obtain carbon microspheres,mixing a strong acid solution with the carbon microspheres, heating to perform surface oxidation treatment on the carbon microspheres, dispersing the carbon microspheres subjected to surface oxidation treatment into an organic solvent, adding a modifier, and heating for surface chemical modification to obtain a carbon microsphere lubricating fluid anti-wear agent, wherein the modifier is at leastone of stearic acid, octadecylamine and oleic acid. The prepared carbon microsphere lubricating liquid anti-wear agent is uniform in particle size and not prone to sedimentation in lubricating liquid, and the anti-wear performance of the lubricating liquid under the extreme pressure condition can be remarkably improved.

Description

technical field [0001] The application belongs to the technical field of lubricating fluid additives, and in particular relates to a carbon microsphere lubricating fluid antiwear agent and an antiwear lubricating fluid. Background technique [0002] With the progress and development of transmission system design, higher requirements are put forward for the lubricating performance of lubricating fluid. The development of new lubricating fluid additives to improve the performance of lubricating fluid has become the research and development trend of lubricating fluid. It can be said that there is no lubricating fluid Additives, there is no modern lubricant industry. With the rapid development of carbon materials, the use of new carbon materials as lubricant additives has attracted the attention of researchers. Carbon microspheres have a high degree of symmetry and a large bulk elastic modulus, so that it still has unique properties such as low friction coefficient, good therma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10M141/06C10M169/04C01B32/05C10N30/06C10N40/04
CPCC10M125/02C10M141/06C10M169/048C01B32/05C10M2201/041C10M2201/14C10M2205/0285C10M2207/2835C10M2215/223C10M2221/04C10M2207/123C10M2207/289C10M2209/084C01P2004/03C01P2004/32C01P2004/61
Inventor 陈煜博
Owner 吉诺润滑技术(苏州)有限公司
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