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A metal copper-graphene layered composite material and its preparation method and device

A graphene layer, composite material technology, applied in metal rolling, workpiece heating device, elongation control and other directions, can solve the mechanical strength drop of copper-based graphene composite material, low interface bonding strength, low hot rolling production efficiency, etc. problems, to achieve the effect of facilitating popularization and application, reducing production costs and saving resources

Active Publication Date: 2021-06-15
CRRC IND INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, hot-rolling composite can effectively realize the metallurgical bonding between the interfaces of the metal sheets and strips to be clad, and obtain high-quality composite materials; Brittle intermetallic compounds are produced, and the production efficiency of hot rolling is low, and the yield is low
However, the cold-rolling composite is carried out below the recrystallization temperature of the metal material, and the degree of freedom of metal combination is large, and the adaptability is wide; but the interfacial bonding strength of the plate-strip composite material obtained by cold-rolling composite is low, which will lead to copper-based graphite The mechanical strength of olefin composites has dropped significantly, which still has great obstacles to the preparation of materials.

Method used

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  • A metal copper-graphene layered composite material and its preparation method and device
  • A metal copper-graphene layered composite material and its preparation method and device
  • A metal copper-graphene layered composite material and its preparation method and device

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Embodiment 1

[0031] The present embodiment provides a metal copper-graphene layered composite material, the specific preparation method is as follows (flow chart see figure 1 ):

[0032] (1) adopt CVD to prepare the metal copper foil that grows graphene;

[0033] (2) 20 layers of metal copper foil grown with graphene are continuously bitten into the first rolling mill in a way that the composite surface is to be superimposed, and the online single-pass room temperature rolling is carried out at 50MPa, and the rolling reduction rate is controlled. 8% to obtain a pre-composite metal copper-graphene blank;

[0034] (3) The pre-composite metal copper-graphene blank is directly transported into the vacuum rapid heating device, and the online rapid heating method is adopted in the heating device to carry out online rapid heating of the pre-composite plate strip blank for 10 seconds, so that the pre-composite metal copper-graphene The olefin billet heats up rapidly to 900°C;

[0035] (4) The h...

Embodiment 2

[0037] This embodiment provides a metal copper-graphene layered composite material, the specific preparation method is as follows:

[0038] (1) adopt CVD to prepare the metal copper foil that grows graphene;

[0039] (2) 20 layers of metal copper foil grown with graphene are continuously bitten into the first rolling mill in a way that the composite surface is to be superimposed, and the online single-pass room temperature rolling is carried out at 50Mpa, and the rolling reduction rate is controlled. 8% to obtain a pre-composite metal copper-graphene blank;

[0040] (3) The pre-composite metal copper-graphene blank is directly transported into the vacuum rapid heating device, and the online rapid heating method is adopted in the heating device to carry out online rapid heating of the pre-composite plate strip blank for 10 seconds, so that the pre-composite metal copper-graphene The olefin billet heats up rapidly to 800°C;

[0041] (4) The heated pre-composite metal copper-gr...

Embodiment 3

[0043] This embodiment provides a metal copper-graphene layered composite material, the specific preparation method is as follows:

[0044] (1) adopt CVD to prepare the metal copper foil that grows graphene;

[0045] (2) 20 layers of metal copper foil grown with graphene are continuously bitten into the first rolling mill in a way that the composite surface is to be superimposed, and the online single-pass room temperature rolling is carried out at 50MPa, and the rolling reduction rate is controlled. 8% to obtain a pre-composite metal copper-graphene blank;

[0046] (3) The pre-composite metal copper-graphene blank is directly transported into the vacuum rapid heating device, and the online rapid heating method is adopted in the heating device to carry out online rapid heating of the pre-composite plate strip blank for 10 seconds, so that the pre-composite metal copper-graphene The olefin billet heats up rapidly to 700°C;

[0047] (4) The heated pre-composite metal copper-gr...

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Abstract

The invention relates to the field of metal composite materials, in particular to a metal copper-graphene layered composite material and a preparation method and device thereof. During preparation, it includes: (1) rolling for the first time: at room temperature, the metal copper foil with graphene grown on more than two layers is rolled to a rolling reduction of 5% in the manner that the composite surface is to be superimposed -10%, to obtain a pre-composite metal copper-graphene billet; (2) second rolling: the pre-composite metal copper-graphene billet is rolled to a reduction rate of 3 under vacuum at 600-900°C %‑5%, get it. The metal copper-graphene layered composite material prepared by the invention has good composite effect, high strength and high conductivity. In addition, the preparation method has short flow and high efficiency, is beneficial to reduce production costs and save resources, is environmentally friendly and is convenient for popularization and application.

Description

technical field [0001] The invention relates to the field of metal composite materials, in particular to a metal copper-graphene layered composite material and a preparation method and device thereof. Background technique [0002] Graphene is a carbonaceous material with a single-layer two-dimensional honeycomb lattice structure densely packed with sp2 hybridized carbon atoms. It has excellent comprehensive properties, with a tensile strength of 125Gpa, an elastic modulus of 1.0Tpa, and a thermal conductivity of 5300W / (m〃k), the electron mobility is 2×10 5 cm 2 (v "s), therefore, graphene is often used to prepare composite material as ideal filler. [0003] Mentioned in CN108193065A is a kind of preparation method of graphene-reinforced copper-based composite material, after the suspension containing multilayer graphene is sprayed on copper foil, then laminated assembly, through sintering, multipass cold rolling and annealing treatment After that, a composite material is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/56B21B9/00B21B37/48B21B1/26
CPCB21B1/26B21B9/00B21B37/48B21B37/56B21B2045/006B21B2265/10B21B2265/12
Inventor 章潇慧栾益锋李小满陈强杨为三孙帮成龚明
Owner CRRC IND INST CO LTD