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Monodispersed nanometer graphene lubricant additive and production method

A lubricating oil additive and nano-graphene technology, applied in the directions of additives, petroleum industry, lubricating compositions, etc., can solve the problems of affecting lubricating oil lubrication and anti-wear effect, poor dispersibility of graphene, poor dispersibility, etc., and achieve optimal economical efficiency. Advantages and application prospects, the effect of improving dispersion and preventing aggregation

Inactive Publication Date: 2020-11-24
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Currently widely used graphene lubricating oil additives, due to poor dispersibility of graphene, graphene additives have problems of poor dispersibility and easy agglomeration in lubricating oil, which affects the lubricating and anti-wear effect of lubricating oil

Method used

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  • Monodispersed nanometer graphene lubricant additive and production method
  • Monodispersed nanometer graphene lubricant additive and production method
  • Monodispersed nanometer graphene lubricant additive and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Add the graphene microchips into the cupric chloride solution first, then add the dispersant, and disperse through ultrasonic to disperse the graphene and fully absorb the cupric chloride, then filter out the excess cupric chloride solution, and finally dry it. Obtain the graphene that absorbs cupric chloride; Graphene microchip is the graphene microchip within 100 layers; Copper chloride solution is saturated cupric chloride solution; Dispersant is calcium sulfonate, and calcium sulfonate add-on is 2.5% of the mass of graphene microsheets; the frequency of ultrasonic dispersion is 40kHz, and the time is 7min;

[0036] (2) Put the copper chloride-adsorbed graphene prepared in step (1) into a box-type atmosphere resistance furnace, and then burn it quickly in a hydrogen atmosphere to reduce the copper chloride to copper, and then collect it to obtain copper Graphene-coated powder; the burning temperature is 460°C and the time is 2 minutes;

[0037] (3) First add the...

Embodiment 2

[0041] (1) Add the graphene microchips into the cupric chloride solution first, then add the dispersant, and disperse through ultrasonic to disperse the graphene and fully absorb the cupric chloride, then filter out the excess cupric chloride solution, and finally dry it. Obtain the graphene that absorbs cupric chloride; Graphene microchip is the graphene microchip within 100 layers; Copper chloride solution is saturated cupric chloride solution; Dispersant is calcium sulfonate, and calcium sulfonate add-on is 2% of the mass of graphene microsheets; the frequency of ultrasonic dispersion is 35kHz, and the time is 9min;

[0042] (2) Put the copper chloride-adsorbed graphene prepared in step (1) into a box-type atmosphere resistance furnace, and then burn it quickly in a hydrogen atmosphere to reduce the copper chloride to copper, and then collect it to obtain copper Graphene-coated powder; the burning temperature is 420°C and the time is 2.5 minutes;

[0043] (3) First add the...

Embodiment 3

[0047] (1) Add the graphene microchips into the cupric chloride solution first, then add the dispersant, and disperse through ultrasonic to disperse the graphene and fully absorb the cupric chloride, then filter out the excess cupric chloride solution, and finally dry it. Obtain the graphene that absorbs cupric chloride; Graphene microchip is the graphene microchip within 100 layers; Copper chloride solution is saturated cupric chloride solution; Dispersant is calcium sulfonate, and calcium sulfonate add-on is 4% of the mass of graphene microsheets; the frequency of ultrasonic dispersion is 45kHz, and the time is 6min;

[0048] (2) Put the copper chloride-adsorbed graphene prepared in step (1) into a box-type atmosphere resistance furnace, and then burn it quickly in a hydrogen atmosphere to reduce the copper chloride to copper, and then collect it to obtain copper Graphene-coated powder; the burning temperature is 480°C and the time is 1.5min;

[0049] (3) First add the copp...

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Abstract

The invention relates to the field of lubricant additives, and discloses a monodispersed nanometer graphene lubricant additive and a production method. The production method comprises the following production process: (1) adding graphene nanoplatelets and a first dispersing agent into a saturated copper chloride solution for ultrasonic dispersion, and conducting filtering and drying to produce graphene which adsorbs copper chloride; (2) conducting fast firing on the graphene which adsorbs the copper chloride in a hydrogen atmosphere, and conducting collection to obtain powder of copper-coatedgraphene; and (3) adding the powder of the copper-coated graphene, a second dispersing agent and a 100N base oil into a sand mill for grinding and compounding to obtain the monodispersed nanometer graphene lubricant additive. According to the monodispersed nanometer graphene lubricant additive and the production method, by coating the dispersed graphene by nanometer copper powder, the graphene canbe monodispersed as nanoparticles, stacking and aggregation of the graphene are prevented, the dispersity is good, and a high-concentration nanoscale copper-coated graphene solution is further formed, can be conveniently and directly added into a lubricant, and can be evenly dispersed so that the anti-wear property of the lubricant can be significantly improved.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, and discloses a monodisperse nano-graphene lubricating oil additive and a preparation method thereof. Background technique [0002] With the development and application of the machinery industry, people pay more and more attention to the safe and efficient operation of machinery and equipment. In the operation of machinery, friction and wear, as a ubiquitous natural phenomenon, are also the main cause of equipment damage. How to effectively reduce friction and wear during the operation of mechanical equipment has become an important research topic. Among them, lubricating oil, as the most effective technical means to reduce friction and wear, plays an important role in high-performance machinery. With the development of the lubricating oil industry, the performance of the base lubricating oil has reached the technical bottleneck. In order to further improve the anti-wear, friction-reduci...

Claims

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Application Information

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IPC IPC(8): C10M163/00C10M177/00C01B32/194C10N30/04C10N30/06C10N10/04
CPCC01P2006/22C10M163/00C10M177/00C10M2201/041C10M2201/05C10M2203/10C10M2215/086C10M2215/28C10M2219/044C01B32/194
Inventor 曾军堂陈庆司文彬李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD
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