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High-dispersion modified graphene lubricating oil and preparation method thereof

A high dispersibility, graphene technology, applied in the field of lubricating oil, can solve the problems such as the difficulty of graphite to exert lubricating performance, the small amount of graphene added, the influence of lubricating performance of lubricating oil, etc., to achieve excellent anti-wear and anti-friction ability, uniform dispersion and promotion the effect of high diffusivity, high diffusivity and self diffusivity

Inactive Publication Date: 2016-12-07
CHONGQING DELING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once phase separation occurs, graphite is easy to agglomerate and it is difficult to exert its lubricating properties
[0004] In the prior art, because there is too much graphene, it cannot be well dispersed in the base oil and agglomerates, but too little graphene addition will have a certain impact on the lubricating performance of the lubricating oil

Method used

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  • High-dispersion modified graphene lubricating oil and preparation method thereof
  • High-dispersion modified graphene lubricating oil and preparation method thereof
  • High-dispersion modified graphene lubricating oil and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, dispersant, the addition of the modified graphene is equivalent to 3wt‰ of the base oil, the addition of the dispersant The amount corresponds to 0.8 wt% of the base oil.

[0035] Described modified graphene preparation method comprises the steps:

[0036] (1) Add graphene to 1mol / L of H 2 SO 4 , stirred and reacted at 80-100°C for 6h, then further washed, and vacuum freeze-dried to obtain functionalized graphene;

[0037] (2) Sodium dodecylbenzenesulfonate and the functionalized graphene described in step (1) are blended in methanol at a mass ratio of 1:1, and the mixed solution is violently ultrasonically oscillated at 80-100° C. for 50 hours, Stir the mixed solution at 250-300 r / min under nitrogen protection for 4-8 hours, and finally filter.

[0038] The base oil is mineral base oil, and the dispersant is sodium dodecylbenzenesulfonate.

[0039] The p...

Embodiment 2

[0043] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, dispersant, the addition of the modified graphene is equivalent to 5wt‰ of the base oil, the addition of the dispersant The amount corresponds to 0.6 wt% of the base oil.

[0044] Described modified graphene preparation method comprises the steps:

[0045] (1) Graphene is added to 2mol / L H 2 SO 4 , stirred and reacted at 80-100°C for 8h, then further washed, and vacuum freeze-dried to obtain functionalized graphene;

[0046] (2) Blend the polyalkenyl succinimide and the functionalized graphene described in step (1) with a mass ratio of 2:3 in methanol, and the mixed solution is violently ultrasonically oscillated at 80-100°C for 60 hours, Under the protection of nitrogen, the mixed solution was stirred at 250-300 r / min for 6 hours, and finally filtered.

[0047] The base oil is vegetable base oil, and the dispersant is fatty acid glyceride.

[0048] The p...

Embodiment 3

[0052] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, dispersant, the addition of the modified graphene is equivalent to 8wt‰ of the base oil, the addition of the dispersant The amount corresponds to 0.7 wt% of the base oil.

[0053] Described modified graphene preparation method comprises the steps:

[0054] (1) Add graphene to 1.5mol / L of H 2 SO 4 , stirred and reacted at 80-100°C for 8h, then further washed, and vacuum freeze-dried to obtain functionalized graphene;

[0055] (2) Blend polyvinylpyrrolidone and the functionalized graphene described in step (1) in methanol at a mass ratio of 1:1, and after the mixed solution is subjected to intense ultrasonic vibration at 80 to 100° C. for 50 hours, it is heated at 250 °C under nitrogen protection. Stir the mixed solution at ~300r / min for 4~8h, and finally filter.

[0056] The base oil is a synthetic base oil, and the dispersant is a quaternary ammonium compo...

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Abstract

The invention discloses a high-dispersion modified graphene lubricating oil and a preparation method thereof. The lubricating oil comprises modified graphene, base oil and a dispersant, wherein the addition amount of the modified graphene is equivalent to 3 to 15wt% of the base oil; and the addition amount of the dispersant is equivalent to 0.5 to 1.0wt% of the base oil. Preferably, the lubricating oil also comprises stearic acid modified TiO2 nanoparticles, and the addition amount of the nanoparticles accounts for 2 to 5 wt% of the base oil. The invention also discloses preparation for the lubricating oil by adopting a microwave manner. The high-dispersion modified graphene lubricating oil provided by the invention has excellent dispersibility and stability among all components, and solves the problem of long-term stability of graphene used as an additive in the base oil.

Description

technical field [0001] The invention belongs to the field of lubricating oil, in particular to a highly dispersible modified graphene lubricating oil and a preparation method thereof. Background technique [0002] For mechanical parts, friction and wear are inevitable, which not only brings a large loss of materials and energy, but also causes environmental pollution. Lubricating oil is one of the important technical means to effectively slow down the friction and wear of mechanical parts and reduce energy loss. Lubricating oil is the blood of modern industry and national defense industry. It is composed of base oil and additives. The rapid development of modern industry requires the upgrading of lubricating oil. Generally, there are three ways to improve oil quality: 1) Improve the quality of base oil, 2) Improve the performance of additives, 3) Improve the compounding technology of additives. Lubricating oil additives are the essence of various high-grade lubricating oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10M169/04C10N10/02
CPCC10M125/02C10M169/04C10M2201/041C10M2201/062C10M2205/02C10M2205/06C10M2207/126C10M2207/283C10M2209/103C10M2209/104C10M2213/062C10M2215/02C10M2215/086C10M2217/028C10M2217/044C10M2219/044C10M2221/04C10N2010/02
Inventor 罗廷军
Owner CHONGQING DELING TECH
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