High-strength and high-conductivity graphene reinforced copper matrix composite material, preparation method and application thereof

A technology of copper-based composite materials and graphene, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of not meeting the requirements of high-strength and high-conductivity copper-based composite materials, and avoid oxidation and graphene structure damage, The effect of preventing agglomeration and improving the uniformity of dispersion

Active Publication Date: 2018-06-12
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrical conductivity of the composite material prepared by it is only 63.84-71.84% IACS, and the tensile stren

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0053] Example 1

[0054] Prepare 0.5wt% graphene-reinforced copper-based composite material. Graphene and spherical copper powder are all commercially available. The specific steps are as follows:

[0055] (1) Mix 5g of graphene with 2000ml of absolute ethanol, and perform shearing and dispersing in a high-speed shearing disperser, where the speed is 7000rpm, and the time is 0.5h; then, ultrasonic vibration treatment is performed in the ultrasonic cell crusher In order to disperse the graphene, the ultrasonic frequency is 50KHz, the running time is 5h, and the graphene monodisperse is obtained; 1kg of copper powder (particle size 15-25μm, morphology is similar to spherical) is added to the graphene monodisperse, then The mixture of graphene monodisperse liquid and copper powder was placed in a ball mill tank for mechanical ball milling for 18 hours, the ball-to-material ratio in the ball mill tank was 20:1, the ball mill speed was 100 rpm, and the total amount of the mixture did n...

Example Embodiment

[0064] Example 2

[0065] Prepare 0.1wt% graphene-reinforced copper-based composite material. Graphene and spherical copper powder are commercially available. The specific steps are as follows:

[0066] (1) Mix 0.1g of graphene with 500ml of absolute ethanol, and perform shearing dispersion treatment in a high-speed shearing disperser, where the rotation speed is 2000 rpm and the time is 4 hours; then ultrasonic vibration treatment is performed in the ultrasonic cell crusher In order to disperse the graphene, the ultrasonic frequency is 50KHz, and the running time is 0.5h to obtain a graphene monodisperse; 0.1kg of copper powder (particle size 15-20μm, morphology is similar to spherical) is added to the graphene monodisperse , Then place the graphene monodisperse liquid and copper powder mixture in a ball milling tank for mechanical ball milling for 2 hours, the ball-to-material ratio in the ball milling tank is 50:1, the ball milling speed is 500rpm, and the total mixture does not...

Example Embodiment

[0075] Example 3

[0076] Prepare 1wt% graphene-reinforced copper-based composite material. Graphene and spherical copper powders are all commercially available. The specific steps are as follows:

[0077] (1) Mix 1g of graphene with 1000ml of absolute ethanol, and perform shearing dispersion treatment in a high-speed shearing disperser, where the rotation speed is 4000rpm and the time is 2h; and then ultrasonic vibration treatment is performed in the ultrasonic cell pulverizer. Disperse the graphene with an ultrasonic frequency of 50KHz and a running time of 2h to obtain a graphene monodisperse; add 0.1kg of copper powder (with a particle size of 20-40μm and a spherical shape) to the graphene monodispersion, then Place the mixture of graphene monodisperse liquid and copper powder in a ball milling tank for mechanical ball milling for 4 hours, the ball-to-material ratio in the ball milling tank is 10:1, the ball milling speed is 400rpm, and the total mixture does not exceed 2 / 3 of ...

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Abstract

The invention relates to the technical field of composite material preparation, in particular to a high-strength and high-conductivity graphene reinforced copper matrix composite material and a preparation method and application thereof. Spherical copper powder is used as a matrix material, graphene is used as a reinforcing phase, through the steps such as graphene liquid phase dispersion, ball milling predispersion, surface coating, hot isostatic pressing, hot extrusion and so on, and the high-strength and high-conductivity graphene reinforced copper matrix composite material with nearly fulldense, good conductivity, high tensile strength, high hardness, and high elongation is prepared. The preparation method has good process controllability and is easy to produce on a large scale. The prepared high-strength and high-conductivity grapheme reinforced copper matrix composite material is uniform in structure, the graphene is in good combination with the interface of a matrix, the performance is stable, and great application prospects in the fields of automobiles, aerospace and electronics are obtained.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a high-strength and high-conductivity graphene-reinforced copper-based composite material and its preparation method and application. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. In 2004, British scientists successfully prepared graphene flakes for the first time. The internal carbon atoms are all bonded by σ bonds with extremely high bonding strength, and each carbon atom can provide an unbonded free electron. This unique structure determines its high strength and good electrical conductivity, its strength is as high as 130GPa, and the carrier mobility is 15000cm 2 / (Vs), both are the most known materials. Not only that, graphene also has a high specific surface area and thermal conductivity, as well as unique properties such as molecular, quantum, and tunnel effects. [0003] Cop...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F1/00B22F1/02B22F3/04B22F3/15B22F3/20C22C1/05C22C9/00
CPCC22C1/05C22C9/00B22F3/04B22F3/15B22F3/20B22F9/04B22F2998/10B22F2003/208B22F2009/043B22F1/108B22F1/16B22F1/145
Inventor 王德升王鹏云冯岩
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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