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Preparation method of graphene-metal-based bulk composite material

A composite material and graphene technology, applied in the field of graphene-metal-based bulk composite material preparation, can solve problems such as graphene agglomeration, and achieve the effects of preventing oxidation, solving easy agglomeration, and stabilizing the process

Inactive Publication Date: 2017-05-10
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of graphene-metal matrix block composite material, which solves the problem of agglomeration of graphene in the process of mixing with metal nanopowder in the existing preparation method

Method used

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  • Preparation method of graphene-metal-based bulk composite material
  • Preparation method of graphene-metal-based bulk composite material
  • Preparation method of graphene-metal-based bulk composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1: Disperse 2 parts by mass of graphene oxide in 1 part by mass of deionized water in a 40KHz ultrasonic environment for 2h, and disperse 3 parts by mass of copper sulfate and 10ml of absolute ethanol in a 40KHz ultrasonic environment for 2h.

[0032] Step 2, mix the above-mentioned copper sulfate solution with the graphene oxide solution, and transfer to a constant temperature water bath at 80°C for electromagnetic stirring, while adding 6ml of hydrazine hydrate (mass ratio is 75%), react for 2 hours, cool to room temperature, The solid product is successively centrifuged three times with deionized water and absolute ethanol, and dried at a temperature lower than 60° C. using an electric heating mantle to obtain a composite powder of copper supported on graphene without oxidation.

[0033] Step 3, take 0.5g of the prepared graphene-loaded copper composite powder, mix it with 300ml of absolute ethanol in a 500ml beaker, and carry out crushing and dispersion treatmen...

Embodiment 2

[0036] Step 1: Disperse 2 parts by mass of graphene oxide in 2 parts by mass of deionized water in a 40KHz ultrasonic environment for 2h, and disperse 5 parts by mass of copper sulfate and 10ml of absolute ethanol in a 40KHz ultrasonic environment for 2h.

[0037] Step 2, mix the above-mentioned copper sulfate solution with the graphene oxide solution, and transfer it to a constant temperature water bath at 80°C for electromagnetic stirring, while adding 6ml of hydrazine hydrate (mass ratio is 75%), react for 1 hour, and cool to room temperature. The solid product was successively centrifuged three times with deionized water and absolute ethanol, and dried at 60° C. with an electric heating mantle to obtain a composite powder of copper supported on graphene without oxidation.

[0038] Step 3: Mix 0.3 g of the graphene-loaded copper composite powder prepared in step 2 and 300 ml of absolute ethanol in a 500 ml beaker, and then crush and disperse for 30 minutes in a cell pulveriz...

Embodiment 3

[0041] Step 1: Disperse 1 mass part of graphene oxide in 2 mass parts of deionized water for 2 hours in a 40KHz ultrasonic environment, and disperse 4 mass parts of copper sulfate and 10ml of absolute ethanol in a 40KHz ultrasonic environment for 2 hours.

[0042] Step 2, the above-mentioned copper sulfate solution and graphene oxide solution are mixed, and transferred to a constant temperature water bath at 60°C for electromagnetic stirring, while adding 8ml of hydrazine hydrate (mass ratio is 75%), reacting for 3 hours, cooling to room temperature, The solid product is successively centrifuged three times with deionized water and absolute ethanol, and dried at a temperature lower than 60° C. using an electric heating mantle to obtain a composite powder of copper supported on graphene without oxidation.

[0043] Step 3, take 0.6g of the graphene-loaded copper composite powder prepared in step 2, mix it with 300ml of absolute ethanol in a 500ml beaker, and carry out crushing and ...

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Abstract

The invention discloses a preparation method of a graphene-metal-based bulk composite material. The preparation method of the graphene-metal-based bulk composite material comprises the steps of dispersing graphene oxide in deionized water for ultrasonic dispersing; dispersing metal salt in absolute ethyl alcohol for ultrasonic dispersing; mixing the two components, adding hydrazine hydrate for reduction reaction, sequentially washing a product with deionized water and absolute ethyl alcohol after completing reaction, removing a solvent, and finally drying to obtain graphene-loaded metal composite powder; dispersing the graphene-loaded metal composite powder into absolute ethyl alcohol, smashing and dispersing, then adding nano-metal powder, continuously ultrasonic dispersing, and plasma sintering at a vacuum state after drying to obtain the graphene-metal-based bulk composite material. According to the graphene-metal-based bulk composite material obtained through the invention, graphene is not agglomerated or oxidized, the electrical conductivity of the graphene-metal-based bulk composite material obtained through the invention is better than the electrical conductivity of the graphene-metal-based bulk composite material provided in the current research.

Description

technical field [0001] The invention belongs to the technical field of graphene composite materials, and in particular relates to a preparation method of graphene-metal matrix block composite materials. Background technique [0002] Graphene is a honeycomb-like two-dimensional lattice planar film composed of carbon atoms arranged in sp2 hybrid orbitals, with a thickness of about 0.335nm. It is the thinnest material in the world and has a large specific surface area. It is the material with the highest strength known, and many amazing progresses have been made in many fields in recent years, and it is expected to realize the fastest application in the field of composite materials. However, the reported graphene composites are mainly concentrated in the field of graphene / polymer composites, but so far there are few reports on the mechanical properties of graphene / metal composites. [0003] Many metals have high thermal conductivity, electrical conductivity and formability, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F3/105B22F1/00C22C9/00C22C5/06C22C1/05
CPCB22F9/24B22F1/0003B22F3/105B22F2003/1051B22F2998/10B22F2999/00C22C1/05C22C5/06C22C9/00B22F2202/01B22F2201/20
Inventor 张会
Owner SHAANXI SCI TECH UNIV