Graphene/copper composite and preparation method thereof

A composite material and graphene technology, which is applied in the field of graphene-reinforced copper-based composite materials and its preparation, can solve the problems of easy oxidation and inability to realize mass production of materials, so as to avoid copper powder oxidation, excellent physical properties, and improve the interface The effect of wettability

Active Publication Date: 2015-06-17
SHANGHAI HIWAVE COMPOSITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical reduction of this invention produces metallic copper, which is extremely easy to oxidize due to the small size of the copper particles, which puts forward higher requirements for the subsequent reduction process
In addition, due to the limitation of plasma sintering technology itself, mass production of materials cannot be realized

Method used

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  • Graphene/copper composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The basic operation steps of present embodiment 1 preparation graphene / copper composite material are as follows:

[0046] Ⅰ) Material composition of graphene / copper composites

[0047] The material composition of graphene / copper composite material is mainly metal copper and graphene, and wherein metal copper adopts ball-milled flake copper alloy powder, nickel is a matrix alloy element, and the mass fraction of nickel in copper alloy is 5wt%; Wherein graphene The raw material is few-layer graphene prepared by mechanical exfoliation method, which accounts for 10wt% of the composite material, and the balance is 90wt% of the metal matrix.

[0048] Ⅱ) The basic steps of preparing graphene / copper composites (see attached figure 1 )

[0049] 1) take by weighing the copper-nickel alloy powder of 50g and the high-purity flake graphite of 5.5g;

[0050] 2) According to the ball-to-material ratio of 20:1, put the balls, copper-nickel alloy powder, flake graphite and alcohol in...

Embodiment 2

[0055] The main difference from Example 1 is that: Example 2 adds a hot extrusion process to obtain a graphene / copper composite wire.

[0056] The basic operation steps of present embodiment 2 preparation graphene / copper composite material are as follows:

[0057] Ⅰ) Material composition of graphene / copper composites

[0058] The material components of the graphene / copper composite material are mainly metallic copper and graphene, wherein the metallic copper adopts ball-milled flake copper alloy powder, nickel is a matrix alloy element, and the mass fraction of nickel in the copper alloy is 0.3wt%; wherein graphene The raw material is few-layer graphene prepared by mechanical exfoliation method, which accounts for 0.5wt% in the composite material, and the balance is 99.5wt% of the metal matrix.

[0059] Ⅱ) The basic steps of preparing graphene / copper composites (see attached figure 1 )

[0060] 1) Weigh 50g of copper-nickel alloy powder and 0.25g of high-purity flake graphi...

Embodiment 3

[0067] The main difference from Example 2 is that: this Example 3 adds an annealing and rolling process to obtain a graphene / copper composite strip.

[0068] The basic operation steps of present embodiment 3 preparation graphene / copper composite material are as follows:

[0069] Ⅰ) Material composition of graphene / copper composites

[0070] The material components of the graphene / copper composite material are mainly metallic copper and graphene, wherein the raw materials and contents of metallic copper and graphene are the same as in Example 1.

[0071] Ⅱ) The basic steps of preparing graphene / copper composites (see attached figure 1 )

[0072] 1) take by weighing the copper-nickel alloy powder of 50g and the high-purity flake graphite of 0.25g;

[0073] 2) According to the ball-to-material ratio of 20:1, put the balls, copper-nickel alloy powder, flake graphite and alcohol into the ball mill tank, and the ball mill time is 12 hours. With the progress of ball milling, the ...

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Abstract

The invention provides a graphene / copper composite and a preparation method of the graphene / copper composite. Copper-nickel alloy powder and crystalline flake graphite are ball-milled mechanically jointly, alcohol is added as a wet milling medium during mechanical ball milling, and copper powder oxidation can be avoided. Graphene is stripped from the graphite by virtue of a mechanical force; at the same time, due to the presence of copper-nickel micro powder, a stripping process of the graphite is promoted; the spherical copper-nickel alloy powder is changed into sheeted powder by the action of the ball milling to obtain graphene / copper composite powder preliminarily; and a graphene / copper composite block, a composite wire and a composite tape are obtained by powder metallurgy, hot extrusion and rolling technologies. According to the composite, the graphene is dispersed uniformly; interface bonding between a matrix and a reinforcement; and the graphene / copper composite has excellent physical properties. According to the composite and the method, a technology is simple, a process is easy to control, and a scale production application is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite materials and their preparation, and in particular relates to a graphene-reinforced copper-based composite material and a preparation method thereof. Background technique [0002] With the continuous advancement of science and technology, the rapid development of machinery, electronics, electricity, rail transit, etc. has increasingly strong demand for high-strength, high-conductivity formable materials. It is difficult for a single material to meet the application requirements. Therefore, composite materials have become an inevitable trend of development. [0003] Metal copper has good electrical and thermal conductivity. At present, the demand for high-strength, electrical and thermal conductive copper materials is increasingly urgent. Although nano-alumina reinforced copper composites have been successfully applied in industry, their comprehensive properties are far from meeting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C9/00C22F1/08B22F9/04B22F1/00B22F9/22
Inventor 陈乐生王鹏鹏刘伟利毛琳
Owner SHANGHAI HIWAVE COMPOSITE MATERIALS CO LTD
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