Method for preparing graphene/copper composite material by in-situ catalysis of solid carbon source on surfaces of copper powders

A technology of in-situ catalysis and solid carbon source, applied in the field of powder metallurgy

Active Publication Date: 2015-09-02
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can effectively overcome the problems caused by the traditional addition of graphene sheets. The method is simple and the mechanical properties of the composite material are excellent.

Method used

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  • Method for preparing graphene/copper composite material by in-situ catalysis of solid carbon source on surfaces of copper powders
  • Method for preparing graphene/copper composite material by in-situ catalysis of solid carbon source on surfaces of copper powders
  • Method for preparing graphene/copper composite material by in-situ catalysis of solid carbon source on surfaces of copper powders

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Put steel balls: copper powder: polymethyl methacrylate at a mass (g) ratio of 150:10:0.1 into a ball mill jar, and fill it with argon as a protective atmosphere. Go through low-speed short-time ball milling (400-600 rpm, ball milling 2h) in a planetary ball mill. The results of ball milling are as Figure 1a shown.

Embodiment 2

[0036] Put steel balls: copper powder: polymethyl methacrylate at a mass (g) ratio of 150:10:0.2 into a ball mill jar, and fill it with argon as a protective atmosphere. Go through low-speed short-time ball milling (400-600 rpm, ball milling 2h) in a planetary ball mill. The results of ball milling are as Figure 1b shown.

Embodiment 3

[0038] Put steel balls: copper powder: polymethyl methacrylate at a mass (g) ratio of 150:10:0.3 into a ball mill jar, and fill it with argon as a protective atmosphere. Go through low-speed short-time ball milling (400-600 rpm, ball milling 2h) in a planetary ball mill. The results of ball milling are as Figure 1c shown.

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Abstract

The present invention relates to a method for preparing a graphene / copper composite material by in-situ catalysis of a solid carbon source on surfaces of copper powders. The method comprises the steps of: adding steel balls, the copper powders and polymethyl methacrylate at the mass ratio of 150: 10: (0.1-0.3) into a ball milling tank, and filling argon as protective atmosphere after vacuum pumping; after ball milling, preparing cooper-polymethyl methacrylate powders which are uniformly dispersed; performing reduction treatment in a tubular furnace to catalyze the polymethyl methacrylate into graphene, and obtaining graphene / copper composite powders with graphene in-situ growth; and then preparing a graphene copper-based composite material block. Tensile property of the graphene reinforced copper-based composite material prepared by the method is better than tensile property of that prepared by a traditional adding method, that is a method of adding reduction-oxidation graphene or graphene sheets. Reinforcement of a cooper-based material is achieved, and high-strength copper materials have a better application prospect on electronic devices.

Description

technical field [0001] The invention relates to a method for synthesizing a graphene / copper composite material in situ by using powder metallurgy, belonging to the technical field of powder metallurgy. Background technique [0002] Copper is a material with good electrical conductivity, ductility and thermal conductivity, and is widely used in industries such as electrical, mechanical and national defense. The fly in the ointment is that the strength of copper is very low. In the application of electronic devices (such as PCB boards), the strength is not high enough to cause various problems, such as shortened lifespan and easy damage. With the development of society and the shortage of energy sources, people have more demands for lightweight and high-strength materials, and copper-based composite materials are an ideal material to meet these requirements. In the preparation of high-strength copper materials (such as beryllium bronze with a strength of up to 1500MPa), the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F3/14
Inventor 赵乃勤陈亚坤何春年师春生刘恩佐
Owner TIANJIN UNIV
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