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Copper alloy composite material as well as preparation method and application thereof

A composite material, copper alloy technology, applied in conductive materials, conductive materials, metal processing equipment and other directions, can solve the problems of weak interface bonding, cracks and porous graphene, burning loss and agglomeration, etc., to improve the bonding force, The effect of reducing the surface energy and increasing the number of grains

Active Publication Date: 2022-01-11
HOHAI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the technical problems of weak interfacial bonding, cracks and pores, and graphene burning and agglomeration after the composite of graphene and copper

Method used

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  • Copper alloy composite material as well as preparation method and application thereof
  • Copper alloy composite material as well as preparation method and application thereof
  • Copper alloy composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of copper alloy composite material, comprises following component, the copper powder of graphene 0.55wt%, dispersant 0.5wt% and balance; Described high-strength and high-conductivity graphene / copper composite material is copper-CuC 2 - Graphene multilayer composite structure. The particle size of the copper powder is 200 mesh, and the purity is 99.99%.

[0045] Dispersant is modified polyvinyl alcohol, and the preparation method of modified polyvinyl alcohol is:

[0046] S01. Weigh hexa-nonyltrimethylammonium hydroxide and polyvinyl alcohol according to the mass ratio of 1:1.5, and add deionized water according to the solid-to-liquid ratio of 1:3, and stir magnetically at 45°C for 30 minutes to form a mixed solution of 280mL;

[0047]S02. Continue to add 30 mL of potassium hexametaphosphate solution with a mass fraction of 7.7% to the mixed solution, and ultrasonically disperse for 1 h;

[0048] S03. After the dispersed mixed solution is allowed to stand for pr...

Embodiment 2

[0054] A kind of copper alloy composite material, comprises following component, the copper powder of graphene 0.6wt%, dispersant 0.8wt% and balance; Described high-strength and high-conductivity graphene / copper composite material is copper-CuC 2 - Graphene multilayer composite structure. The particle size of the copper powder is 400 mesh, and the purity is 99.99%.

[0055] Dispersant is modified polyvinyl alcohol, and the preparation method of modified polyvinyl alcohol is:

[0056] S01. Weigh hexa-nonyltrimethylammonium hydroxide and polyvinyl alcohol according to a mass ratio of 1:1.5, add deionized water according to a solid-to-liquid ratio of 1:3, and stir magnetically at 65°C for 45 minutes to form a mixed solution of 590 mL;

[0057] S02. Continue to add 60 mL of potassium hexametaphosphate solution with a mass fraction of 7.7% to the mixed solution, and ultrasonically disperse for 2 h;

[0058] S03. After the dispersed mixed solution is allowed to stand for precipita...

Embodiment 3

[0064] A kind of copper alloy composite material, comprises following component, the copper powder of graphene 0.82wt%, dispersant 1wt% and balance; Described high-strength and high-conductivity graphene / copper composite material is copper-CuC 2 - Graphene multilayer composite structure. The particle size of the copper powder is 300 mesh, and the purity is 99.99%.

[0065] Dispersant is modified polyvinyl alcohol, and the preparation method of modified polyvinyl alcohol is:

[0066] S01. Weigh hexa-nonyltrimethylammonium hydroxide and polyvinyl alcohol according to the mass ratio of 1:1.5, and add deionized water according to the solid-to-liquid ratio of 1:3, and stir magnetically at 55°C for 40 minutes to form a mixed solution of 860mL;

[0067] S02. Continue to add 45 mL of potassium hexametaphosphate solution with a mass fraction of 7.7% to the mixed solution, and ultrasonically disperse for 1.5 h;

[0068] S03. After the dispersed mixed solution is allowed to stand for p...

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Abstract

The invention discloses a copper alloy composite material which comprises the following components in percentage by weight: 0.55 to 0.82 percent of graphene, 0.5 to 1 percent of a dispersing agent and the balance of copper powder, wherein a high-strength and high-conductivity graphene / copper composite material is of a copper-CuC2-graphene multi-layer composite structure. The invention further discloses a preparation method of the copper alloy composite material and application of the copper alloy composite material in cables for electronic information and aerospace. The graphene, the dispersing agent and the copper powder are subjected to solid-phase mixing; the mixed materials are subjected to ball milling, and the powder obtained after ball milling is subjected to annealing treatment; the annealed powder is pressed and formed, and pressure sintering is conducted on the annealed powder; and the prepared sample is subjected to hot extrusion treatment, so that the purposes of refining crystal grains, eliminating defects and improving mechanical properties and electrical conductivity are achieved. According to the copper alloy composite material as well as the preparation method and the application thereof provided by the invention, the graphene can be well dispersed in the composite material, the tensile strength is obviously improved, and the conductivity is also considered.

Description

technical field [0001] The invention relates to a copper alloy composite material and its preparation method and application, belonging to the technical field of composite materials. Background technique [0002] As one of the earliest metals used by humans, copper and its alloys are widely used in power transmission, automobile manufacturing, aerospace and other fields due to their excellent electrical and thermal conductivity. However, copper itself has poor mechanical properties, low strength, easy oxidation deformation at high temperature, and easy to break during use, which limits its application to a certain extent. Therefore, copper-based materials with excellent electrical and thermal conductivity and high strength have been studied. Composite materials are very necessary. Graphene is a sp 2 A new material in which hybridized carbon atoms are tightly packed into a single-layer two-dimensional honeycomb structure. It is one of the materials with the highest strength...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/05B22F9/04B22F1/142B22F1/10B22F3/14B22F3/04H01B1/02B21C23/00
CPCC22C9/00C22C1/05B22F9/04B22F3/14B22F3/04H01B1/026B21C23/001B22F2009/043B22F2009/042
Inventor 刘欢包晨伟巨佳吴玉娜禚孝儒李旋房梦飞胡亮
Owner HOHAI UNIV