Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF11 Cites 22 Cited by
  • 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 strength is 246-250MPa, which cannot meet the requirements of high-strength and high-conductivity copper-based composite materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Prepare 0.5wt% graphene-reinforced copper-based composite material, graphene and quasi-spherical copper powder are commercially available, and the specific steps are as follows:

[0055] (1) Mix 5g of graphene with 2000ml of absolute ethanol, first carry out shear dispersion treatment in a high-speed shear disperser, wherein the rotating speed is 7000rpm, and the time is 0.5h; then perform ultrasonic oscillation treatment in an ultrasonic cell pulverizer To disperse the graphene, the ultrasonic frequency is 50KHz, and the running time is 5h to obtain a graphene monodisperse liquid; 1kg of copper powder (15-25 μm in particle size, spherical shape) is added to the graphene monodisperse liquid, and then Put the mixture of graphene monodispersion and copper powder into a ball mill jar for mechanical ball milling for 18 hours, the ball-to-material ratio in the ball mill jar is 20:1, the ball mill speed is 100rpm, and the total amount of the mixture does not exceed 2 / 3 of the ...

Embodiment 2

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

[0066] (1) Mix 0.1g of graphene with 500ml of absolute ethanol, first carry out shear dispersion treatment in a high-speed shear disperser, wherein the rotation speed is 2000rpm, and the time is 4h; then perform ultrasonic oscillation treatment in an ultrasonic cell pulverizer To disperse the graphene, the ultrasonic frequency is 50KHz, and the operation time is 0.5h to obtain a graphene monodisperse liquid; 0.1kg copper powder (15-20 μm in particle size, spherical shape) is added to the graphene monodisperse liquid , then the graphene monodispersion and the copper powder mixture are placed in a ball milling tank for mechanical ball milling for 2h, the ball-to-material ratio in the ball milling tank is 50:1, the ball milling speed is 500rpm, and the total amount of the mixture is no more than 2...

Embodiment 3

[0076] Prepare 1wt% graphene-reinforced copper-based composite material, graphene and quasi-spherical copper powder are commercially available, and the specific steps are as follows:

[0077] (1) 1g graphene is mixed with 1000ml absolute ethanol, first carry out shear dispersion process in high-speed shear disperser, wherein, rotating speed is 4000rpm, time is 2h; Graphene is dispersed, the ultrasonic frequency is 50KHz, and the running time is 2h to obtain a graphene monodisperse liquid; 0.1kg of copper powder (20-40 μm in particle size, spherical shape) is added to the graphene monodisperse liquid, and then Put the mixture of graphene monodispersion and copper powder into a ball mill jar for mechanical ball milling for 4 hours, the ball-to-material ratio in the ball mill jar is 10:1, the ball mill speed is 400rpm, and the total amount of the mixture does not exceed 2 / 3 of the volume of the ball mill jar; graphite is obtained Mixture of ethylene / copper composite powder and et...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Densityaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com