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A kind of graphene-copper composite material and preparation method thereof

A composite material and graphene technology, which is applied in the preparation field of graphene composite materials, can solve problems such as poor matrix bonding, poor dispersion, and complicated processes, and achieve improved interface bonding state, convenient material composition design, and simple process Effect

Active Publication Date: 2017-10-13
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The methods disclosed in CN104451227A and CN103952588A all relate to the pretreatment of graphene powder by electroless plating process. In the process of drying and high-temperature reduction to obtain composite powder, not only the process is complicated but also environmentally harmful chemical reagents are used.
Although this method does not involve electroless plating and other processes, the process of preparing alloy powder by high-energy ball milling is followed by hydrogen reduction of copper alloy graphene composite powder. This process also has the problem of relatively low production efficiency.
[0009] In summary, in the prior art, the composite of graphene and copper-based materials has disadvantages such as poor matrix bonding, poor dispersion, and complicated preparation processes.

Method used

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  • A kind of graphene-copper composite material and preparation method thereof
  • A kind of graphene-copper composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0060] A kind of preparation method of graphene-copper composite material, comprises the steps:

[0061] (1) With the conductive graphite paper as the anode and the nickel sheet with the same area as the anode as the cathode, the electrochemical intercalation method is used to peel off the anode at a current of 0.5A;

[0062] (2) Suction filter the electrolyte solution after electrolysis in step (1), and wash the filter residue with deionized water until the electrolyte is completely removed to obtain an anode exfoliation product, and then disperse the anode exfoliation product in a deionized solution at a concentration of 20 mg / mL. In ionized water, under circulating water at 8°C, mechanical shear peeling is carried out under the conditions of a stator-rotor gap of 0.3 mm and a shear speed of 7000 rpm;

[0063] (3) the product of step (2) is freeze-dried to obtain graphene powder;

[0064] (4) Graphene powder 0.1wt.%, Ti 2 % AlC ceramic powder 7.5wt.% and copper powder 92.4...

Embodiment 2

[0067] A kind of preparation method of graphene-copper composite material, comprises the steps:

[0068] (1) With the conductive graphite paper as the anode and the nickel sheet with the same area as the anode as the cathode, the electrochemical intercalation method peels off the anode under a current of 0.4A;

[0069] (2) Suction filter the electrolytic solution after electrolysis in step (1), and wash the filter residue with deionized water until the electrolyte is completely removed to obtain an anode exfoliation product, and then disperse the anode exfoliation product in a deionized solution at a concentration of 5 mg / mL In ionized water, under circulating water at 9°C, mechanical shear peeling is carried out under the conditions of a stator-rotor gap of 0.1 mm and a shear speed of 4000 rpm;

[0070] (3) the product of step (2) is freeze-dried to obtain graphene powder;

[0071] (4) According to the mass percentage, it is graphene powder 0.01wt.%, Ti 2 AlC ceramic powder...

Embodiment 3

[0074] A kind of preparation method of graphene-copper composite material, comprises the steps:

[0075] (1) With the conductive graphite paper as the anode and the nickel sheet with the same area as the anode as the cathode, the electrochemical intercalation method is used to peel off the anode at a current of 0.6A;

[0076] (2) Suction filter the electrolytic solution after electrolysis in step (1), and wash the filter residue with deionized water until the electrolyte is completely removed to obtain an anode exfoliation product, and then disperse the anode exfoliation product in a deionized In ionized water, under circulating water at 7°C, mechanical shear peeling is carried out under the conditions of a stator-rotor gap of 0.5 mm and a shear speed of 13,000 rpm;

[0077] (3) the product of step (2) is freeze-dried to obtain graphene powder;

[0078] (4) According to the mass percentage, it is graphene powder 5wt.%, Ti 2 % AlC ceramic powder 0.1wt.% and copper powder 94.9...

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Abstract

The invention relates to a preparation method for a graphene-copper composite material. The method comprises the following steps: uniformly mixing graphene powder, MAX-phase ceramic powder and copper powder, and then performing hot-pressed sintering to obtain the graphene-copper composite material. The graphene-copper composite material prepared according to the method provided by the invention has the following advantages: (1) through the MAX-phase ceramic powder, the interface bonding state of graphene and copper matrix is improved and the problem in bonding graphene and copper is solved; (2) the prepared graphene-copper composite material has excellent mechanical properties and ductility; and (3) the method provided by the invention is simple in technical process, low in cost, convenient in design of material components and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of preparation of graphene composite materials, in particular to a graphene-copper composite material and a preparation method thereof. Background technique [0002] Copper and its alloys have played an important role in the development of human beings. In modern industry, copper and copper alloys are widely used in the fields of electrical engineering, electronics, chemical industry, transportation, machinery, etc. due to their excellent electrical conductivity, thermal conductivity, and corrosion resistance. application. With the development of science and technology, new technologies rely more and more on new materials, and put forward higher requirements for material performance. However, the yield strength of copper is generally low, and the high temperature deformation resistance is lower, thus limiting its further application. By introducing high-strength, high-modulus, wear-resistant, and high-temperature-re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00B22F3/14
CPCB22F3/14C22C9/00C22C32/0052C22C32/0068
Inventor 王钰李萌启
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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