Method for preparing modified graphene reinforced copper-based composite material

A copper-based composite material and graphene composite technology, which is applied in the field of metal-based composite material preparation, can solve the problems of difficulty in preparing density, poor graphene/copper composite powder phase interface bonding, etc., and achieves high strength and electrical conductivity. The effect of uniform organization, uniform mixing and dispersion

Inactive Publication Date: 2019-01-25
XIAN UNIV OF TECH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing modified graphene-reinforced copper-based composite materials, which solves the problem that the graphene / copper composite powder prepared by the existing method has poor phase interface bonding and is difficult to prepare a high-density, high-strength and high-conductivity powder. The problem of graphene-reinforced copper matrix composites

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing modified graphene reinforced copper-based composite material
  • Method for preparing modified graphene reinforced copper-based composite material
  • Method for preparing modified graphene reinforced copper-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]Weigh graphene oxide dissolved in deionized water and ultrasonically disperse for 1 h to obtain a graphene oxide solution with a concentration of 0.2 g / L; weigh copper nitrate dissolved in deionized water and magnetically stir for 20 min to obtain a copper nitrate solution with a concentration of 5 g / L . According to the volume ratio of 5:1, the prepared copper nitrate solution was added to the graphene oxide solution at a rate of 1 drop / s, and the process was accompanied by magnetic stirring; then the beaker was sealed, magnetically stirred for 20 minutes, and then ultrasonically dispersed for 20 minutes.

[0051] NaOH solution (2mol / L) was added dropwise to the mixed solution to adjust the pH value to 8. The process was accompanied by magnetic stirring, then magnetic stirring for 20 minutes, and ultrasonic dispersion for 20 minutes. Under ventilated conditions, according to the volume ratio of the mixed solution to hydrazine hydrate is 6:1, add hydrazine hydrate dropwi...

Embodiment 2

[0054] Graphene oxide was dissolved in deionized water and ultrasonically dispersed for 5 hours to obtain a graphene oxide solution with a concentration of 1 g / L; copper nitrate was dissolved in deionized water and magnetically stirred for 60 minutes to obtain a copper nitrate solution with a concentration of 25 g / L. According to the volume ratio of 20:1, the prepared copper nitrate solution was added to the graphene oxide solution at a rate of 3 drops / s, and the process was accompanied by magnetic stirring; the beaker was sealed, first magnetically stirred for 60 minutes, and then ultrasonically dispersed for 60 minutes.

[0055] NaOH solution (2mol / L) was added dropwise to the mixed solution to adjust the pH value to 12. The process was accompanied by magnetic stirring for 60 minutes, followed by ultrasonic dispersion for 60 minutes. Under ventilated conditions, according to the volume ratio of the mixed solution to hydrazine hydrate is 30:1, add hydrazine hydrate dropwise to...

Embodiment 3

[0059] Weigh graphene oxide dissolved in deionized water and ultrasonically disperse for 3 hours to obtain a graphene oxide solution with a concentration of 0.6g / L; weigh copper nitrate dissolved in deionized water and magnetically stir for 40min to obtain a copper nitrate solution with a concentration of 15g / L . According to the volume ratio of 10:1, the prepared copper nitrate solution was added to the graphene oxide solution at a rate of 2 drops / s, and the process was accompanied by magnetic stirring; then the beaker was sealed, magnetically stirred for 40 minutes, and then ultrasonically dispersed for 40 minutes.

[0060] NaOH solution (2mol / L) was added dropwise to the mixed solution to adjust the pH value to 10. The process was accompanied by magnetic stirring, then magnetic stirring for 40 minutes, and ultrasonic dispersion for 40 minutes. Under ventilated conditions, according to the volume ratio of the mixed solution to hydrazine hydrate is 18:1, add hydrazine hydrate...

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

No PUM Login to view more

Abstract

The invention discloses a method for preparing modified graphene reinforced copper-based composite material. The method specifically comprises the following steps: uniformly mixing a copper nitrate solution with a graphene oxide solution, and then adding hydrazine hydrate for carrying out reduction reaction; then cleaning a mixed solution after reaction, and drying precipitate, thus obtaining modified graphene composite powder; then carrying out liquid-phase powder mixing on the modified graphene composite powder and copper powder, drying by evaporating, cold-pressing and sintering, thus obtaining the modified graphene reinforced copper-based composite material. According to the method disclosed by the invention, surface modification is carried out on graphene, and copper particles are inserted between graphene sheet layers, so that the graphene is not easy to generate an aggregation phenomenon when the graphene is mixed with matrix copper powder; during a sintering process, a sintering neck can be formed by the copper particles of the graphene sheet layers and matrix copper, so that strong graphene / copper interface bonding strength can be favorably obtained; the modified graphenereinforced copper-based composite material prepared by adopting the method disclosed by the invention is uniform in organization and higher in strength and electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and relates to a method for preparing modified graphene-reinforced copper-based composite material. Background technique [0002] With the rapid development of science and technology, the requirements for the comprehensive performance of materials are getting higher and higher. A single material with superior performance can no longer meet the needs of practical applications. Copper-based composite materials with excellent comprehensive performance are getting more and more attention. Graphene Because of its excellent electrical and thermal conductivity and good mechanical properties, it has become an ideal reinforcement for copper-based composite materials. Therefore, the preparation of high-performance graphene / copper-based composite materials has become a research hotspot. The uniformity of graphene and copper powder mixing and dispersion determines the graphe...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C9/00
CPCC22C1/05C22C9/00
Inventor 杨晓红陈昱高园园石滨旭邹军涛梁淑华
Owner XIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap