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Preparation method of graphene functional lubricating oil

A technology of lubricating oil and graphene, which is applied in the field of lubricating oil to achieve good dispersion stability, high carrying capacity and excellent effect

Inactive Publication Date: 2016-01-20
DEVON ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the rapid development of the machinery industry and environmental protection put forward more stringent requirements on the performance of lubricating oils, such as lubricating oils need to have high oxidation stability, better viscosity-temperature properties, good low-temperature fluidity and excellent shear stability and anti-wear properties, it is no longer possible to improve the performance of lubricating oil only by relying on traditional single-formulation additives

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  • Preparation method of graphene functional lubricating oil

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[0018] A preparation method for graphene functional lubricating oil, comprising the following steps:

[0019] S1, zinc acetate and thioacetamide are dissolved in water respectively to form a solution;

[0020] S2. Mix zinc acetate solution and thioacetamide solution with dialkyl phosphorodithioate and hydrazine hydrate to react, then separate, wash and dry the obtained precipitate to obtain dialkyl phosphorodithioate modification Nano zinc sulfide, the molar ratio of zinc acetate, thioacetamide and dialkyl dithiophosphate is 1:1~4:3~6;

[0021] S3. Stirring and mixing nano-graphene, nano-molybdenum disulfide and nano-borate with a coupling agent to obtain a nano-composite powder modified by a coupling agent, the nano-graphene, nano-molybdenum disulfide and nano-borate The weight ratio is 1~2:1:1~4, and the consumption of coupling agent is 0.6%~0.9% of the total weight of nano graphene, nano molybdenum disulfide and nano borate;

[0022] S4. Add the nano-zinc sulfide modified...

Embodiment 1

[0030] The preparation method of the functional lubricating oil of the present embodiment comprises the following steps:

[0031] S11, dissolving zinc acetate and thioacetamide in water respectively to form a solution;

[0032] S12. Mixing zinc acetate solution and thioacetamide solution with dioctyl phosphorodithioate and hydrazine hydrate for reaction, wherein the molar ratio of zinc acetate, thioacetamide and dioctyl phosphorodithioate is 1 : 1: 3, hydrazine hydrate is excess, the reaction temperature is 90 ° C, the reaction time is 2 hours, and then the obtained precipitate is centrifuged, and then the precipitate is washed with deionized water and absolute ethanol, and then the precipitate is in Dried in a vacuum oven to obtain nano-zinc sulfide modified by dioctyl dithiophosphate;

[0033] S13. Stirring and mixing nano-graphene particles (embedded with carbon spheres with a particle size of 85 nanometers), nano-molybdenum disulfide and nano-calcium borate with coupling ...

Embodiment 2

[0036] The preparation method of the functional lubricating oil of the present embodiment comprises the following steps:

[0037] S21, dissolving zinc acetate and thioacetamide in water respectively to form a solution;

[0038] S22. Mixing zinc acetate solution and thioacetamide solution with dioctyl phosphorodithioate and hydrazine hydrate for reaction, wherein the molar ratio of zinc acetate, thioacetamide and dioctyl phosphorodithioate is 1 : 4: 6, hydrazine hydrate is excessive, the reaction temperature is 100 ° C, the reaction time is 3 hours, and then the obtained precipitate is centrifuged, and then the precipitate is washed with deionized water and absolute ethanol, and then the precipitate is in Dried in a vacuum oven to obtain nano-zinc sulfide modified by dioctyl dithiophosphate;

[0039] S23. Stirring and mixing nano-graphene particles (embedded with carbon spheres with a particle size of 95 nanometers), nano-molybdenum disulfide and nano-calcium borate and coupli...

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Abstract

The invention discloses a preparation method of graphene functional lubricating oil. The preparation method comprises the following steps: S1. respectively dissolving zinc acetate and thioacetamide in water to prepare solutions; S2. mixing the zinc acetate solution and the thioacetamide solution with dialkyl dithiophosphate and hydrazine hydrate to react and then separating, washing and drying an obtained precipitate, thus obtaining dialkyl dithiophosphate modified nano zinc sulfide; S3. stirring nano graphene, nano molybdenum disulfide, nano borate and a coupling agent to mix the materials to obtain coupling agent modified nano composite powder; and S4. adding dialkyl dithiophosphate modified nano zinc sulfide obtained in the step S2 to base oil, adding the coupling agent modified nano composite powder obtained in the step S3 to the base oil, stirring the materials at a high speed at a certain temperature and then restoring the temperature to the normal temperature, thus obtaining the graphene functional lubricating oil. The prepared lubricating oil has excellent antifriction and antiwear properties and high bearing capacity and has the function of repairing worn surfaces.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a preparation method of graphene functional lubricating oil. Background technique [0002] In recent years, with the rapid development of my country's economy, the annual domestic consumption of lubricating oil and oil additives has grown rapidly, and lubricating oil has become an inevitable "protective fluid" for transportation and industrial machinery and equipment. At the same time, the rapid development of the machinery industry and environmental protection put forward more stringent requirements on the performance of lubricating oils, such as lubricating oils need to have high oxidation stability, better viscosity-temperature properties, good low-temperature fluidity and excellent shear stability and anti-wear properties, it is no longer possible to improve the performance of lubricating oils only by relying on traditional single-formulation additives. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/08C10N30/06
Inventor 周永华沈文中黎伟
Owner DEVON ENERGY CORP
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