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Method for preparing chrome plated graphene/copper composite powder

A composite powder, graphene technology, applied in the direction of graphene, chemical instruments and methods, carbon compounds, etc., can solve the problems of poor graphene/copper composite powder interface bonding, difficult to prepare dense, etc., to achieve strength and electrical conductivity. High, uniform organization, uniform mixing and dispersing effect

Active Publication Date: 2018-05-15
XIAN UNIV OF TECH
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  • 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 chrome-plated graphene / copper composite powder, 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 graphite with high density, high strength and high conductivity. Problems with ene-reinforced copper matrix composites

Method used

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  • Method for preparing chrome plated graphene/copper composite powder
  • Method for preparing chrome plated graphene/copper composite powder
  • Method for preparing chrome plated graphene/copper composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 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 chromium sulfate dissolved in deionized water and magnetically stir for 20 min to obtain a chromium sulfate solution with a concentration of 5 g / L . According to the volume ratio of 5:1, the prepared chromium sulfate 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.

[0043] NaOH solution (2mol / L) was added dropwise to the mixed solution to adjust the pH value to 9. The process was accompanied by magnetic stirring, then magnetic stirring for 20 minutes, and ultrasonic dispersion for 20 minutes.

[0044] According to the mass ratio of copper powder and chrome-plated graphene in the composite powder as 1:2, copper powder was ...

Embodiment 2

[0047] Weigh graphene oxide dissolved in deionized water and ultrasonically disperse for 1 h to obtain a graphene oxide solution with a concentration of 0.4 g / L; weigh chromium sulfate dissolved in deionized water and magnetically stir for 22 min to obtain a chromium sulfate solution with a concentration of 10 g / L . According to the volume ratio of 5:1, the prepared chromium sulfate 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 22 minutes, and then ultrasonically dispersed for 24 minutes.

[0048] NaOH solution (2mol / L) was added dropwise to the mixed solution to adjust the pH value to 9.5. The process was accompanied by magnetic stirring, then magnetic stirring for 22 minutes, and ultrasonic dispersion for 24 minutes.

[0049]According to the mass ratio of copper powder and chrome-plated graphene in the composite powder as 1:1, copper powder w...

Embodiment 3

[0052] Dissolve graphene oxide in deionized water and ultrasonically disperse for 1 hour to obtain a graphene oxide solution with a concentration of 0.6 g / L; weigh chromium sulfate and dissolve it in deionized water for 25 minutes to obtain a chromium sulfate solution with a concentration of 15 g / L . According to the volume ratio of 5:1, the prepared chromium sulfate solution was added to the graphene oxide solution at a rate of 3 drops / s, and the process was accompanied by magnetic stirring; then the beaker was sealed, first magnetically stirred for 25 minutes, and then ultrasonically dispersed for 25 minutes.

[0053] 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 25 minutes, and ultrasonic dispersion for 25 minutes.

[0054] According to the mass ratio of copper powder and chrome-plated graphene in the composite powder as 16:1, copper powder was added ...

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Abstract

The invention discloses a method for preparing chrome plated graphene / copper composite powder. The method particularly includes the steps that a chromium sulfate solution is added into a graphene oxide solution, chemical chrome plating is carried out, and a chrome plated graphene mixed solution is obtained; copper powder is added into the chrome plated graphene mixed solution to be evenly scattered, hydrazine hydrate is added, and a reduction reaction is made; and a mixed solution obtained after reaction is subject to centrifugation and washing, precipitates are dried, and the chrome plated graphene / copper composite powder is obtained. According to the method, surface modification is carried out through chemical chrome plating on graphene, chrome particles are inserted into graphene layers, and therefore the graphene is not prone to agglomeration when the graphene and the copper powder are mixed. The chrome plated graphene / copper composite powder is prepared through the chrome plated graphene, mixing and scattering are more even, and a graphene enhanced copper-based composite material with even texture and higher strength and conductivity is better obtained.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite material preparation, and relates to a method for preparing chrome-plated graphene / copper composite powder. 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 graphene The perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02B22F9/24C23C18/31C01B32/184C01B32/194
CPCC23C18/1662C23C18/31B22F9/24B22F1/16
Inventor 杨晓红陈昱邹军涛梁淑华肖鹏
Owner XIAN UNIV OF TECH
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