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Preparation method of dispersing nano molybdenum disulfide in lubricating oil system

A technology of nano-molybdenum disulfide and lubricating oil, which is applied in the direction of lubricating compositions, petroleum industry, additives, etc., and can solve the problems of complex lubricating performance, organic molybdenum compound friction reduction, extreme pressure resistance, and low stability, etc., to achieve Short synthesis time, reduced synthesis cost, excellent dispersion and stability

Inactive Publication Date: 2011-04-20
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the premise of the research by Zhang Zhijun et al., Wang Huaiying et al. successfully prepared nanoparticles with lipophilic groups by using polyvinylpyrrolidone (PVP) and pyridinium dialkyldithiophosphate (PyDDP) as modifiers by liquid phase dispersion method. Molybdenum disulfide improves the dispersibility in oil solution, but the friction reduction, extreme pressure resistance, and stability of organic molybdenum compounds are lower than those of molybdenum disulfide powder, and the purpose of adding corresponding surfactants or dispersants is only It is to make the molybdenum disulfide powder and the oil-based affinity form a uniform emulsion, and the multiple additive components that are too complex are unfavorable factors for improving the lubricating performance of the additive and maintaining the stability of the additive

Method used

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  • Preparation method of dispersing nano molybdenum disulfide in lubricating oil system
  • Preparation method of dispersing nano molybdenum disulfide in lubricating oil system
  • Preparation method of dispersing nano molybdenum disulfide in lubricating oil system

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Experimental program
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Effect test

Embodiment 1

[0020] Add 6.16ml of absolute ethanol, 0.062ml of deionized water, 2.75ml of styrene, 0.039g of AIBN, 0.167g of PVP, and 0.05g of molybdenum disulfide to a three-necked flask in sequence to obtain a reaction solution, and ultrasonically disperse the reaction solution for 10 minutes at room temperature , and then the temperature of the solution was raised to 80° C., and the magnetic stirring was refluxed for 12 hours. After the reaction is complete, add a small amount of absolute ethanol to ultrasonically disperse for 15 minutes, filter, wash with absolute ethanol, take the filtrate, and dry it at 80°C to obtain the modified nanomolybdenum disulfide. Take 0.075g of modified nanomolybdenum disulfide, dissolve it in 2ml of absolute ethanol, add 8ml of butanol, and the resulting solution is directly and stably dispersed in the oily system.

Embodiment 2

[0022] Add 6.16ml of absolute ethanol, 0.062ml of deionized water, 2.75ml of styrene, 0.031g of AIBN, 0.052g of PVP, and 0.05g of molybdenum disulfide to a three-necked flask in sequence to obtain a reaction solution, and ultrasonically disperse the reaction solution for 10 minutes at room temperature , and then the temperature of the solution was raised to 70° C., and the magnetic stirring was refluxed for 12 hours. After the reaction is complete, add a small amount of absolute ethanol to ultrasonically disperse for 15 minutes, filter, wash with absolute ethanol, take the filtrate, and dry it at 80°C to obtain the modified nanomolybdenum disulfide. Take 0.075g of modified nano-molybdenum disulfide, dissolve it in 2ml of absolute ethanol, add 8ml of butanol, and the resulting solution is directly and stably dispersed in the oily system. The amount added is about 0.01-1%.

Embodiment 3

[0024] Add 6.16ml of absolute ethanol, 0.062ml of deionized water, 2.75ml of styrene, 0.031g of AIBN, 0.223g of PVP, and 0.05g of molybdenum disulfide to a three-necked flask in sequence to obtain a reaction solution, and ultrasonically disperse the reaction solution for 10 minutes at room temperature , and then the temperature of the solution was raised to 60° C., and the magnetic stirring was refluxed for 12 hours. After the reaction is complete, add a small amount of absolute ethanol to ultrasonically disperse for 15 minutes, filter, wash with absolute ethanol, take the filtrate, and dry it at 80°C to obtain the modified nanomolybdenum disulfide. Take 0.075g of modified nanomolybdenum disulfide, dissolve it in 2ml of absolute ethanol, add 8ml of butanol, and the resulting solution is directly and stably dispersed in the oily system.

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Abstract

The invention discloses a preparation method of dispersing nano molybdenum disulfide in a lubricating oil system. Nano molybdenum disulfide, styrene, deionized water and anhydrous alcohol are used as main raw materials, azoisobutyronitrile (AIBN) is used as an initiating agent, and polyvinylpyrrolidone (PVP) is used as a dispersing agent to modify a nano molybdenum disulfide powder body; the modified nano molybdenum disulfide is easily and stably dispersed in an anhydrous alcohol solution; and an anhydrous alcohol solution system containing the modified nano molybdenum disulfide is dispersed in an oil solvent by using an additive to form stable oily liquid of which the appearance is between blue gray and dark gray. The method of the invention has the advantages of simplicity, low cost, small raw material toxicity and short synthetic time and has high application value and commercial prospect.

Description

technical field [0001] The invention relates to the technical field of dispersion of nano lubricating materials, in particular to a preparation method for dispersing nano molybdenum disulfide in a lubricating oil system. Background technique [0002] Nanomolybdenum disulfide includes nanoparticles, nanocomposites, nanosheets, fullerene-like nanoparticles and nanotubes. Compared with ordinary molybdenum disulfide, nano-molybdenum disulfide has been further improved in many properties, which are highlighted in the following aspects: large specific surface area, stronger adsorption capacity, high reactivity, superior catalytic performance, especially catalytic The performance of hydrodesulfurization is stronger, and it can be used to prepare special catalytic materials and gas storage materials; the energy band difference of the nano-molybdenum disulfide thin layer is close to 1178eV, which matches the energy of light, and has application prospects in photovoltaic materials; T...

Claims

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Application Information

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IPC IPC(8): C10M177/00C10M125/22
Inventor 胡献国徐玉福蒋鹏程亚洲
Owner HEFEI UNIV OF TECH
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