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A novel high-conductivity, high-strength graphene/copper material and preparation method thereof

A high-conductivity, graphene technology, which is applied in the field of metal composite materials, can solve the problems of staying in the preparation method, prone to chemical reactions, and difficult to prepare graphene/metal-based composite materials on a large scale, and achieves high conductivity and high strength. , the effect of high conductivity and strength

Inactive Publication Date: 2016-04-13
魏玲
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned preparation methods stay at the molecular level, and it is difficult to prepare graphene / metal matrix composites on a large scale; and if ordinary sintering methods are used, chemical reactions between graphene and metal substrates are prone to occur at the interface, making graphene lose its excellent properties.

Method used

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  • A novel high-conductivity, high-strength graphene/copper material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] (1) be 200 orders, the copper powder that particle size, purity are 99.99% and thickness are 5 carbon atom thicknesses, and the graphene powder that diameter is 20nm mixes according to above-mentioned ratio;

[0017] (2) Put the powder mixed in step (1) into a ball mill and perform high-energy ball milling with a ball-to-material ratio of 10:1 and a rotational speed of 300r / min. Ball mill for 20 hours in an argon-protected environment to make all kinds of powder in the powder During the process of being impacted and squeezed, the particles are deformed, broken, and recombined. With the increase of ball milling time, they surround each other while refining the grains, resulting in a non-equilibrium alloy phase and forming a supersaturated solid solution;

[0018] (3) Put the mixed powder (5) after ball milling into a steel cylinder (4) with a diameter of 20 mm, compact it slightly to reach 50% of the theoretical density, and seal the mouth of the cylinder, wrap the outer ...

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Abstract

The present invention discloses a novel high-conductivity and high-strength graphene / copper material and a preparation method thereof. The material is characterized by comprising, by mass, 1.0-1.5% of C (a graphene state), and the balance of Cu and inevitable impurities. According to the present invention, explosion sintering is adopted to mix powder, such that the mixed powder is subjected to integrated collision, extrusion, friction and welding during the explosion moment to form the compact composite material, the original excellent performance of the graphene is maintained, and the material has higher strength and higher conductivity than the pure copper, and is an excellent high-strength conductive material.

Description

technical field [0001] The invention relates to a novel high-conductivity high-conductivity, high-strength graphene / copper material and a preparation method thereof, belonging to the field of metal composite materials. Background technique [0002] In the past few years, graphene composites have attracted a lot of attention from the scientific community because of their excellent properties, such as high mechanical strength, electrical properties, and thermal conductivity and light transmittance. Now researchers have found a way to make single- and multi-layer graphene and small amounts of graphene oxide, which will lead to the emergence of a large number of applications of graphene composite materials. [0003] Recently, in the field of graphene composite materials, there are few research results on graphene / metal composite materials, which may be because graphene and metal substrates are prone to chemical reactions at the interface. The research team of the Korea Institut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05B22F3/08C22C9/00
Inventor 段绵俊魏玲王怀晓张中威
Owner 魏玲