Preparation method of network interpenetrating graphene-copper composite material

A technology of network interpenetrating and composite materials, which is applied in the field of preparation of network interpenetrating graphene-copper composite materials, which can solve the problems of different interfacial tension, poor dispersion, difficulty in uniform dispersion of graphene and strong interfacial bonding, etc.

Active Publication Date: 2021-05-14
北京碳垣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low density of graphene, poor dispersion, different interfacial tension with molten copper, and interfacial bonding problems, it is difficult to achieve uniform dispersion of graphene in copper-based materials and strong interfacial bonding between graphene and copper.

Method used

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  • Preparation method of network interpenetrating graphene-copper composite material
  • Preparation method of network interpenetrating graphene-copper composite material
  • Preparation method of network interpenetrating graphene-copper composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 A kind of preparation method of network interpenetrating graphene-copper composite material X1

[0027] The method adopts pure copper granular powder as a base material, wherein the particle diameter of the granular powder is 50 microns. Using methane gas as the carbon source, chemical vapor deposition method (CVD method) is used to grow graphene in situ on the surface of copper powder. The specific process and parameters are as follows: put the copper powder in the container at room temperature and put it into the CVD furnace, and close the furnace tube. ;Use the vacuum pump to continuously extract the residual air in the furnace, then close the vacuum pump and feed the carrier gas, wherein the amount of argon is 200Sccm, and the amount of hydrogen is 25Sccm; figure 1 The temperature control method shown is for temperature regulation. Such as figure 1 As shown, heat up the CVD furnace environment at room temperature, raise the temperature to 1020°C for 5...

Embodiment 2

[0029] Embodiment 2 A kind of preparation method of network interpenetrating graphene-copper composite material X2

[0030]The method adopts copper-nickel alloy flake powder with a copper content of 75% as a base material. The thickness of the flake powder is 100 microns, the maximum length of the X-axis direction of the cross-section of the flake powder is 500 microns, and the maximum length of the Y-axis direction is 500 microns. Using acetylene gas as the carbon source, chemical vapor deposition method (CVD method) is used to grow graphene in situ on the surface of copper-nickel alloy powder. The specific process and parameters are as follows: put the copper-nickel alloy powder in a container at room temperature and put it in a CVD furnace , close the furnace tube; use the vacuum pump to continuously pump out the residual air in the furnace, then turn off the vacuum pump and feed the carrier gas, in which the amount of argon gas is 200Sccm, and the amount of hydrogen gas is...

Embodiment 3

[0032] Embodiment 3 A kind of preparation method of network interpenetrating graphene-copper composite material X3

[0033] The method adopts pure copper granular powder as a base material, wherein the particle diameter of the granular powder is 100 microns. Using ethanol liquid as carbon source, chemical vapor deposition method (CVD method) is used to grow graphene in situ on the surface of copper powder. ;Use the vacuum pump to continuously pump out the residual air in the furnace, then turn off the vacuum pump and feed the carrier gas, of which the amount of argon is 200Sccm, and the amount of hydrogen is 25Sccm; start to heat up at room temperature, raise the temperature to 1050°C in 30 minutes, keep the temperature for 30 minutes, and then at this temperature Put in carbon source ethanol, the amount of ethanol is 1mL / min, turn off the carbon source after incubation for 20min, and start to drop to room temperature in gradients. The time of the first cooling stage is 50 mi...

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Abstract

The invention relates to a method for preparing a network interpenetrating graphene-copper composite material, comprising: using atmospheric pressure chemical vapor deposition, using a gaseous or liquid carbon source to grow graphene in situ on copper or copper alloy powder; the deposition will be completed The copper or copper alloy powder is mixed with carbon nanotube powder by ball milling; the mixed powder is cold-extruded into an extrusion billet at room temperature; the extrusion billet is subjected to hot extrusion and multi-pass drawing at room temperature in sequence, or cold-rolled Deformation processing: rapid recrystallization and continuous annealing are performed on the material after deformation processing to obtain a network interpenetrating graphene-copper composite material. The present invention grows high-quality graphene in situ on the surface of copper alloy powder, mixes it with carbon nanotube powder at the same time, combines ball milling and large plastic deformation, and solves the problem of the source of cracks formed by graphene agglomeration and the dispersion and agglomeration of graphene and copper. The obtained three-dimensional network interpenetrating structure can realize the mechanical and electrical enhancement of the material at the same time.

Description

technical field [0001] The invention relates to the technical field of metal composite material manufacturing, in particular to a method for preparing a network interpenetrating graphene-copper composite material. Background technique [0002] With the rapid development of modern industrial technology, higher requirements are placed on the mechanical properties and electrical conductivity of copper and copper alloys. How to introduce a suitable reinforcing phase into copper and copper alloys to prepare high-performance copper-based composites, and to better exert the synergistic effect of the matrix and the reinforcing phase, has become a hot issue of concern to researchers. [0003] In the research on copper matrix composites, alloying elements (such as Ti, W, Ni and other elements), carbon fibers, carbon nanotubes, etc. are often used as reinforcing phases to improve the performance of copper matrix composites. The use of alloying elements as a reinforcing phase can signi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C9/00C22F1/08C23C16/26B22F1/02B22F3/20B22F3/24
CPCC22C1/05C22C9/00C22F1/08C23C16/26C23C16/4417B22F3/20B22F3/24B22F2003/208B22F2003/248B22F2998/10B22F1/16B22F2009/043
Inventor 李铁军
Owner 北京碳垣新材料科技有限公司
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