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Modified graphene lubricating oil with good dispersibility and affinity and preparation method thereof

A graphene and affinity technology, applied in the field of lubricating oil, can solve the problem that graphene is difficult to exert lubricating performance, and achieve the effects of excellent anti-wear and anti-friction ability, good synergy, and prolonging service life

Inactive Publication Date: 2016-12-21
CHONGQING DELING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once phase separation occurs, graphene is easy to agglomerate and it is difficult to exert its lubricating properties

Method used

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  • Modified graphene lubricating oil with good dispersibility and affinity and preparation method thereof
  • Modified graphene lubricating oil with good dispersibility and affinity and preparation method thereof
  • Modified graphene lubricating oil with good dispersibility and affinity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, affinity agent, dispersant, the addition of the modified graphene is equivalent to 3wt‰ of the base oil, the The added amount of the dispersant is equivalent to 0.8wt% of the base oil, and the added amount of the affinity agent is equivalent to 2wt% of the base oil.

[0034] Described modified graphene preparation method comprises the steps:

[0035] (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;

[0036] (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.

[0037] The bas...

Embodiment 2

[0042] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, affinity agent, dispersant, the addition of the modified graphene is equivalent to 5wt‰ of the base oil, the The added amount of the dispersant is equivalent to 0.6 wt% of the base oil, and the added amount of the affinity agent is equivalent to 1.5 wt% of the base oil.

[0043] Described modified graphene preparation method comprises the steps:

[0044] (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;

[0045] (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.

[0...

Embodiment 3

[0051] Highly dispersible modified graphene lubricating oil, the lubricating oil includes modified graphene, base oil, affinity agent, dispersant, the addition of the modified graphene is equivalent to 8wt‰ of the base oil, the The added amount of the dispersant is equivalent to 0.7wt% of the base oil, and the added amount of the affinity agent is equivalent to 0.8wt% of the base oil.

[0052] Described modified graphene preparation method comprises the steps:

[0053] (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;

[0054] (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....

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Abstract

The invention discloses modified graphene lubricating oil with good dispersibility and affinity and a preparation method thereof, the modified graphene lubricating oil comprises modified graphene, base oil, an affinity agent and a dispersing agent, the adding amount of the modified graphene accounts to 3-15wt% of the base oil, the adding amount of the affinity agent accounts to 0.1-2wt% of the base oil, the adding amount of the dispersing agent accounts to 0.5-1.0wt% of the base oil, preferably, the lubricating oil also includes stearic-acid-modified TiO2 nanoparticles, and the adding amount of the nanoparticles accounts to 2 to 5wt% of the base oil. The invention also discloses a method for preparing the lubricating oil by microwave. The high dispersion modified graphene lubricating oil has excellent dispersion and stability, and solves the problem of long-term stability of the graphene as an additive in the base oil.

Description

technical field [0001] The invention belongs to the field of lubricating oil, and in particular relates to a modified graphene lubricating oil with good dispersibility and affinity 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 var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10M139/00C10M141/12C10M177/00C10N30/04C10N30/06C10N60/10C10N60/00
CPCC10M125/02C10M139/00C10M141/12C10M177/00C10M2201/041C10M2201/062C10M2201/14C10M2203/1006C10M2207/283C10M2207/401C10M2215/02C10M2219/044C10M2227/065C10N2030/04C10N2030/06C10N2060/09C10N2060/10
Inventor 罗廷军
Owner CHONGQING DELING TECH
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