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Preparation method of copper-based graphene composite blocky material

A graphene composite and block material technology, applied in the field of copper-based composite materials, can solve the problems of weakening the performance of graphene, achieve good thermal conductivity, good raw material performance, and avoid agglomeration

Active Publication Date: 2015-08-19
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method will weaken the performance of graphene due to the change of the surface structure of graphene.

Method used

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  • Preparation method of copper-based graphene composite blocky material
  • Preparation method of copper-based graphene composite blocky material
  • Preparation method of copper-based graphene composite blocky material

Examples

Experimental program
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Embodiment 1

[0040] In the present embodiment, the preparation method of copper-based graphene composite block material is as follows:

[0041] (1) Take copper nitrate according to that the copper content is 99.8wt%, and prepare copper nitrate ethanol solution.

[0042] (2) Add graphene in the copper nitrate ethanol solution, the ratio of the mass of graphene to the copper element is 2:998, and ultrasonically stir for 1h; then add the glucose solution with a concentration of 0.6M, and ultrasonically stir for 0.5h; then Add a 0.6M sodium hydroxide solution while ultrasonically stirring to obtain a mixed solution.

[0043] The mixed solution was placed in a reaction kettle, and hydrothermally reduced in an oven at 80°C for 2 hours; the resulting reaction product was filtered, and then washed with a mixed liquid of deionized water and ethanol. The volume ratio of alcohol and deionized water in the mixed liquid was 2 : 1, then dried in vacuum at 60°C to obtain a powder product.

[0044]Carry...

Embodiment 2

[0054] A kind of preparation method of copper-based graphene composite block material is provided in the present embodiment as follows:

[0055] (1) Take copper sulfate according to that the copper content is 99wt%, and prepare copper sulfate ethanol solution.

[0056] (2) Add graphene to the copper sulfate ethanol solution, the ratio of the mass of graphene to the mass of copper element is 1:99, and ultrasonically stir for 2 hours; then add glucose solution with a concentration of 0.5M, and ultrasonically stir for 1 hour; then ultrasonically While stirring, a potassium hydroxide solution with a concentration of 0.5M was added and stirred to obtain a mixed solution.

[0057] Put the mixed solution in a reaction kettle, and hydrothermally reduce it in an oven at 80°C for 4 hours; filter the obtained reaction product, and then wash it with a mixed liquid of deionized water and ethanol. The volume ratio of deionized water and alcohol in the mixed liquid is 1 : 1, then dried in v...

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Abstract

The invention provides a preparation method of a copper-based graphene composite blocky material. The preparation method comprises carrying out in-situ mixing on a copper salt solution, reducing sugar, alkali and graphene as raw materials by a solution method so that graphene is uniformly dispersed in the copper solution, reducing copper into cuprous oxide by a hydrothermal reduction method, carrying out in-situ deposition on cuprous oxide particles on the graphene surface, reducing the cuprous oxide particles into copper particles by hydrogen, and carrying out discharge plasma sintering to obtain the copper-based graphene composite blocky material. The copper-based graphene composite blocky material has good graphene dispersibility, good adhesion of a copper base and a graphene reinforcing phase, high tensile strength and compressive strength, and good thermal conductivity.

Description

technical field [0001] The invention relates to the technical field of copper-based composite materials, in particular to a method for preparing a copper-based graphene composite bulk material. Background technique [0002] Copper is a good conductor of heat, its thermal conductivity is 401W / m·K, second only to silver, and it is mostly used in the field of electronic appliances. However, with the rapid development of modern industrial technology, the design of equipment and components is more compact, especially in the field of electrical and electronic, electrical and electronic components are developing in the direction of lighter, thinner, smaller, large energy density and small The heat dissipation space puts forward higher requirements on the thermal conductivity of materials. Traditional single metal materials can no longer meet the design requirements. Metal matrix composites with excellent performance of both metal matrix and reinforcing components have attracted ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/05C22C9/00
Inventor 陈凡燕黄庆王义飞应家敏都时禹刘兆平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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