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Preparation method of graphene-carbon nanotube composite material loaded with nano-copper particle lubricating material

A technology of carbon nanotubes and composite materials, applied in the direction of lubricating compositions, petroleum industry, additives, etc., can solve the problems of expensive instruments, complicated experimental steps, high cost of composite materials and difficulty in popularization and application, and achieve the effect of improving friction and wear properties

Inactive Publication Date: 2017-12-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the copper nanoparticles in the composite products prepared by the above method cannot be uniformly distributed and grown on the carbon nanomaterial matrix. Although some have uniform distribution of Cu nanoparticles, the experimental steps are complicated or require the use of expensive instruments.
The high cost of composite materials makes it difficult to popularize and apply

Method used

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  • Preparation method of graphene-carbon nanotube composite material loaded with nano-copper particle lubricating material
  • Preparation method of graphene-carbon nanotube composite material loaded with nano-copper particle lubricating material
  • Preparation method of graphene-carbon nanotube composite material loaded with nano-copper particle lubricating material

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Experimental program
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Effect test

Embodiment 1

[0025] Step 1: Disperse 0.025g GO and 0.05gCNTs into 200 mL Tris-HCl buffer (pH=8.5) under the action of ultrasound. Then add 0.4 g of dopamine hydrochloride and react for 12 hours under strong magnetic stirring. Repeated centrifugal washing with distilled water and ethanol several times to remove impurities such as free PDA. Finally, the PDA / GO-CNTs sample powder can be obtained by drying in a freeze drying oven.

[0026] Step 2: Disperse 0.02 g of PDA / GO-CNTs evenly in 50 mL of ethanol solution under the action of ultrasound, then add 0.15 g of copper acetate and stir to dissolve it. Take another beaker and dissolve 0.12g of sodium hypophosphite into 40mL of ethanol solution. The above two liquids were added into the flask, and reacted at 80° C. for 20 minutes under the action of stirring in a constant temperature magnetic stirring water bath. The flask was taken out, cooled to room temperature, washed by centrifugation, and dried in vacuum to obtain Cu / PDA / GO-CNTs sample...

Embodiment 2

[0032] Step 1: Disperse 0.01g GO and 0.05gCNTs into 200 mL Tris-HCl buffer (pH=8.5) under the action of ultrasound. Then add 0.4 g of dopamine hydrochloride and react for 12 hours under strong magnetic stirring. Repeated centrifugal washing with distilled water and ethanol several times to remove free PDA and other magazines. Finally, the PDA / GO-CNTs sample powder can be obtained by drying in a freeze drying oven.

[0033] Step 2: Disperse 0.02 g of PDA / GO-CNTs uniformly in 50 mL of ethanol solution under the action of ultrasound, then add 0.15 g of copper sulfate, and stir to dissolve it. Take another beaker and dissolve 0.1g of sodium hypophosphite into 40 mL of ethanol solution. The above two liquids were added into the flask, and reacted at 80° C. for 20 minutes under the action of stirring in a constant temperature magnetic stirring water bath. The flask was taken out, cooled to room temperature, washed by centrifugation, and dried in vacuum to obtain Cu / PDA / GO-CNTs sa...

Embodiment 3

[0035] Step 1: Disperse 0.01g GO and 0.05gCNTs into 200 mL Tris-HCl buffer (pH=8.5) under the action of ultrasound. Then add 0.4 g of dopamine hydrochloride, and react for 12 hours under strong magnetic stirring. Repeated centrifugal washing with distilled water and ethanol several times to remove free PDA and other magazines. Finally, the PDA / GO-CNTs sample powder can be obtained by drying in a freeze drying oven.

[0036]Step 2: Disperse 0.02 g of PDA / GO-CNTs uniformly in 50 mL of ethanol solution under the action of ultrasound, then add 0.2 g of copper nitrate and stir to dissolve it. Take another beaker and dissolve 0.1 g of sodium borohydride into 40 mL of ethanol solution. The above two liquids were added into the flask, and reacted at 80° C. for 20 minutes under the action of stirring in a constant temperature magnetic stirring water bath. The flask was taken out, cooled to room temperature, washed by centrifugation, and dried in vacuum to obtain Cu / PDA / GO-CNTs sampl...

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Abstract

The invention provides a preparation method of a graphene-carbon nanotube composite material loaded with a nano-copper particle lubricating material. The method comprises the following steps: dispersing graphene oxide and carbon nanotubes into Tris-HCl buffer solution, adding dopamine hydrochloride after uniform dispersion and functionally grafting poly-dopamine onto the surfaces of the graphene oxide and the carbon nanotubes; dispersing a functional graphene oxide / carbon nanotube composite material into ethanol, adding soluble copper salt and adding a reducing agent for a reaction after complete dissolving, so that the copper salt is converted into nano-copper and loaded onto the surface of the graphene-carbon nanotube composite material in situ. According to the method, the graphene oxide and the carbon nanotubes are bionically modified by the poly-dopamine; the preparation process is simple; the graphene oxide and the carbon nanotubes can be organically combined together by the poly-dopamine; abundant active groups are provided on the surfaces of the graphene oxide and the carbon nanotubes. The composite material can not only be uniformly and stably dispersed into polar base oil, but also have excellent wear-resisting and friction-reducing effects.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite material preparation, and in particular relates to a method for preparing a graphene-carbon nanotube composite material loaded with nano copper particle lubricating material. Background technique [0002] Carbon nanomaterials exist widely from zero-dimensional to two-dimensional, such as zero-dimensional fullerenes, one-dimensional carbon nanotubes, two-dimensional graphene oxide, and so on. These carbon materials have been studied in the field of tribology, and are usually used as lubricating additives or polymer fillers to play the role of anti-wear and anti-friction. The preparation process of Cu nanoparticles is simple, low in price, self-lubricating, and widely used as lubricating oil additives. With the rapid development of science and technology, a single nano-lubricating additive will gradually fail to meet people's needs, so the research and preparation of new nano-composite materi...

Claims

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Application Information

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IPC IPC(8): C10M163/00C10N30/06
CPCC10M163/00C10M2201/05C10M2201/14C10N2030/06C10N2060/02C10N2020/06
Inventor 宋浩杰贾晓华
Owner SHAANXI UNIV OF SCI & TECH
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