Preparation method of high-strength graphene/copper composite

A composite material, high-strength graphite technology, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problems of graphene difficult to evenly disperse, poor interface bonding force, etc., to achieve tensile strength and yield strength. Increase, enhance potential, improve the effect of interface bonding

Inactive Publication Date: 2020-08-21
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to propose a kind of preparation method of the high-strength graphene / copper composite material that effectively solves that graphene is difficult to uniformly disperse in copper matrix, and the interfacial binding force of graphene and copper is poor

Method used

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  • Preparation method of high-strength graphene/copper composite
  • Preparation method of high-strength graphene/copper composite
  • Preparation method of high-strength graphene/copper composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of graphene oxide: Dissolve graphene oxide dry powder in deionized water by ultrasonic dispersion to obtain a negatively charged graphene oxide solution;

[0031] Mix 1 g of flake graphite with 1 g of sodium nitrate and 46 mL of concentrated sulfuric acid, and stir magnetically for 1 h in an ice water bath. Slowly add 6g potassium permanganate, stir for 1h, then move to 35℃ constant temperature water bath and magnetically stir for 2h. Slowly add 40 mL of distilled water to the beaker, and magnetically stir for 2 hours at 90°C in a water bath. Take out the beaker, add an appropriate amount of distilled water, and then add 6 mL of 3 wt% hydrogen peroxide solution to it, stir evenly, and then stand for a period of time to discard the supernatant. Add the dilute hydrochloric acid solution to the above beaker, and then add deionized water for centrifugal washing to neutrality to obtain a negatively charged graphene oxide solution;

[0032] 2. Sensitization treatm...

Embodiment 2

[0041] 1. Preparation of graphene oxide: Dissolve graphene oxide dry powder in deionized water by ultrasonic dispersion to obtain a negatively charged graphene oxide solution;

[0042] Mix 1 g of flake graphite with 1 g of sodium nitrate and 46 mL of concentrated sulfuric acid, and magnetically stir for 1 hour in an ice water bath. Slowly add 6g potassium permanganate, stir for 1h, move to 35℃ constant temperature water bath and magnetically stir for 2h. Slowly add 40 mL of distilled water to the beaker, and magnetically stir for 2 hours at 90°C in a water bath. Take out the beaker, add an appropriate amount of distilled water, and then add 6 mL of 3 wt% hydrogen peroxide solution to it, stir evenly, and then stand for a period of time to discard the supernatant. Add the dilute hydrochloric acid solution to the above beaker, and then add deionized water for centrifugal washing to neutrality to obtain a negatively charged graphene oxide solution;

[0043] 2. Sensitization treatmen...

Embodiment 3

[0055] 1. Preparation of graphene oxide: Dissolve graphene oxide dry powder in deionized water by ultrasonic dispersion to obtain a negatively charged graphene oxide solution;

[0056] Mix 1 g of flake graphite with 1 g of sodium nitrate and 46 mL of concentrated sulfuric acid, and magnetically stir for 1 hour in an ice water bath. Slowly add 6g potassium permanganate, stir for 1h, then move to 35℃ constant temperature water bath and magnetically stir for 2h. Slowly add 40 mL of distilled water to the beaker, and magnetically stir for 2 hours at 90°C in a water bath. Take out the beaker, add an appropriate amount of distilled water, and then add 6 mL of 3 wt% hydrogen peroxide solution to it, stir evenly, and then stand for a period of time to discard the supernatant. Add the dilute hydrochloric acid solution to the above beaker, and then add deionized water for centrifugal washing to neutrality to obtain a negatively charged graphene oxide solution;

[0057] 2. Sensitization tre...

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Abstract

The invention provides a preparation method of a high-strength graphene / copper composite. Firstly, graphene oxide is adsorbed to surfaces of flake copper powder through an electrostatic self-assemblyprocess to prepare graphene oxide / copper compound powder. Then, copper plating is performed on the graphene oxide / copper compound powder through a chemical copper plating process to obtain copper-plated graphene oxide / copper compound powder. Then, heating reduction is performed on the copper-plated graphene oxide / copper compound powder through a tube furnace to obtain copper-plated graphene / coppercompound powder. Finally, the copper-plated graphene / copper compound powder is put into a discharge plasma sintering furnace to be sintered to prepare graphene / copper compound powder. By means of thegraphene / copper composite prepared through the method, uniform dispersing of graphene in a copper base body is realized, an interface bonding property of graphene and copper is improved, and mechanical properties of the composite are remarkably improved.

Description

Technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a method for preparing a high-strength graphene / copper composite material. Background technique [0002] Copper and copper alloys have been widely used in aerospace, energy and chemical industry, machinery industry, defense industry, electrical and electronic fields due to their good electrical and thermal conductivity, easy formability and other advantages. With the rapid development of modern science and technology, the comprehensive performance of traditional copper and copper alloys can no longer meet the needs of practical applications. By adding high-strength second-phase particles to the copper and copper alloy matrix, it has more excellent comprehensive performance, which can effectively expand the application range of copper and copper alloy. [0003] Graphene is a kind of sp 2 A honeycomb-shaped two-dimensional carbon material with a monoatomic layer fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/04C22C9/00C23C18/40
CPCC22C1/0425C22C1/10C22C1/101C22C9/00C23C18/1655C23C18/1689C23C18/405
Inventor 张柯刘平
Owner UNIV OF SHANGHAI FOR SCI & TECH
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