Dispersible graphene nano-composite particle, and preparation method and application thereof

A technology of nanocomposite and dispersed graphite, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve high yield, mild reaction conditions, and good dispersion stability

Active Publication Date: 2018-08-24
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nanomaterials prepared by this method still have great application limitations as lubricating oil additives.

Method used

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  • Dispersible graphene nano-composite particle, and preparation method and application thereof
  • Dispersible graphene nano-composite particle, and preparation method and application thereof
  • Dispersible graphene nano-composite particle, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A method for preparing dispersible graphene nanocomposite particles, specifically: add 6 g of graphene oxide, 0.02 mol of nickel formate and 400 mL of deionized water into a 500 mL beaker, and ultrasonicate the mixture for 30 minutes. Then carry out spray drying and granulation in a spray dryer, set the spray drying temperature to 220°C, and the obtained tan solid powder is the target product, dispersible graphene-nickel nanocomposite particles which can be used as anti-wear and friction reducer for lubricating oil.

[0020] The scanning electron microscope picture and the transmission electron microscope of the prepared dispersible graphene nickel nanocomposite particle of embodiment 1 are shown in figure 1 . Depend on figure 1 (a) It can be seen that the prepared graphene-nickel nanocomposite particles are wrinkled paper balls; figure 1 (b and c) It can be seen that the nickel nanoparticles are uniformly loaded on the paper-like graphene. The graphene-nickel nanoco...

Embodiment 2

[0026] A method for preparing dispersible graphene nanocomposite particles, specifically: add 3 g of graphene oxide, 0.01 mol of copper formate, and 400 mL of deionized water into a 500 mL beaker, and ultrasonicate the mixture for 30 minutes. Then carry out spray-drying and granulation, set the spray-drying temperature to 220° C., and the obtained brown solid powder is the target product. The target product can be used as dispersible graphene-copper nano-composite particles of lubricating oil anti-wear and friction reducer.

Embodiment 3

[0028] A method for preparing dispersible graphene nanocomposite particles, specifically: add 12 g of graphene oxide, 0.004 mol of nickel acetylacetonate, and 400 mL of deionized water into a 500 mL beaker, and ultrasonicate the mixture for 30 minutes. Then carry out spray drying and granulation, set the spray drying temperature to 230° C., and the obtained tan solid powder is the target product. The target product can be used as dispersible graphene-nickel nano-composite particles of lubricating oil anti-wear and friction reducer.

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Abstract

The invention relates to a preparation method of a dispersible graphene nano-composite particle. The dispersible graphene nano-composite particle is obtained by spray drying granulation of a raw material which is an aqueous dispersion containing a metal salt and graphene oxide at 100-400 DEG C. The metal salt is one of or a mixture containing two or more of metal formate, metal acetate, acetylacetone metal salt, ammonium molybdate / tungstate and metal nitrate. The dispersible graphene nano-composite particle prepared by the method has a uniform particle size, has a good dispersibility stabilityin lubricating oil, has a significant lubricating oil tribology performance improving performance, a small friction coefficient and a small wear scar diameter when used as a lubricating oil additive,and is a lubricating oil anti-wear and anti-friction agent with excellent performances.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel functional nanometer materials, and specifically relates to a dispersible graphene nanocomposite particle, a preparation method thereof, and an application as an antiwear and friction reducer for lubricating oil. Background technique [0002] Research reports show that: on average, 15% of the fuel consumption of each car is wasted on the friction and wear of the engine and gearbox. That means that when the friction and wear of the car is high, the engine needs to consume more fuel to work, resulting in more carbon dioxide greenhouse gas emissions, which is also one of the main reasons for today's smog. The statistical results of the National Bureau of Statistics show that in 2015, the number of civilian vehicles in my country reached 162.8445 million. If the annual consumption of each vehicle is 1.8 tons, about 43.968 million tons of fuel are consumed in the friction and wear of vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/02C10M125/20C10M125/02C10M177/00B82Y30/00B82Y40/00C10N30/06
CPCB82Y30/00B82Y40/00C10M125/02C10M125/20C10M141/02C10M177/00C10M2201/041C10M2201/08C10M2201/082C10M2207/122C10M2227/09C10N2020/06C10N2030/06C10N2010/06C10N2010/14C10N2010/02C10N2010/04
Inventor 张晟卯蒋正权张玉娟张平余张治军
Owner HENAN UNIVERSITY
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