Copper-graphene composite and preparation method

A composite material and graphene technology, which is applied in the field of copper-graphene composite materials and preparation, can solve problems such as uneven composition, oxidation, poor electrical conductivity and thermal conductivity, etc., to achieve improved electrical conductivity, simple process, and increased tensile strength intensity effect

Active Publication Date: 2017-10-13
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of copper-graphene composite material and preparation method thereof, be used to s

Method used

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  • Copper-graphene composite and preparation method

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Embodiment 1

[0034] The method for specifically preparing a copper-based-graphene composite material wire in this embodiment includes the following steps:

[0035] (1) Using an electronic balance with an accuracy of 0.01g, weigh 10.00g of few-layer graphene (3-10 layers, size less than 10μm), pretreated pure copper material 800.00g, pure copper flake 190.00g. Pretreatment, the surface is cleaned with 1% dilute nitric acid, rinsed with distilled water for 3-4 times to remove oxides and other impurities on the surface of pure copper and pure copper flakes, and then in an oven at 80°C for 6h to remove surface moisture and gas Solute.

[0036] The pure copper flakes and graphene are processed into small balls with a size of 1 cm, and the bond between the graphene and the pure copper flakes is increased, which is beneficial to the release of graphene.

[0037] (2) Put the pure copper material into the vacuum furnace, and put the pellets into the storage room of the vacuum furnace. The vacuum furnace ...

Embodiment 2

[0044] The method for specifically preparing a copper-based-graphene composite material wire in this embodiment includes the following steps:

[0045] (1) Using an electronic balance with an accuracy of 0.01g, weigh 20.00g of multilayer graphene (10 layers or more, size less than 10μm), pretreated pure copper material 800.00g, pure copper flake 180.00g, pretreatment, surface Clean with 1% dilute nitric acid, rinse with distilled water 4 times to remove oxides and other impurities on the surface of pure copper and pure copper flakes, and then in an oven at 100°C for 5 hours to remove surface moisture and gas solutes.

[0046] The pure copper flakes and graphene are processed into small balls with a size of 0.5 cm, and the bond between the graphene and the pure copper flakes is increased, which is beneficial to the release of graphene.

[0047] (2) Put the pure copper material into the vacuum furnace, the pre-processed pellets are packed into the vacuum furnace storage room, and the va...

Embodiment 3

[0054] (1) Using an electronic balance with an accuracy of 0.01g, weigh 1.00g of multi-layer graphene (10 layers or more, size less than 10μm), pretreated pure copper material 800.00g, pure copper flake 199.00g, pretreatment, surface Clean with 1% dilute nitric acid and rinse with distilled water 4 times to remove oxides and other impurities on the surface of pure copper and pure copper flakes.

[0055] The pure copper flakes and graphene are processed into small balls with a size of 0.7 cm, and the bond between the graphene and the pure copper flakes is increased, which is beneficial to the release of graphene.

[0056] (2) Put the pure copper material into the vacuum furnace, the pre-processed pellets are packed into the vacuum furnace storage room, and the vacuum furnace is pumped into a high vacuum with a vacuum degree of 10 -4 Pa, preheat, to further release the moisture and residual gas in the pure copper material and the pellets.

[0057] (3) Heat the pure copper material with...

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Abstract

The invention provides a copper-graphene composite and a preparation method thereof. The preparation method at least comprises the following steps: (1) mixing graphene and a proper amount of copper to prepare a spheroid of which the diameter is 0.5-1 cm; (2) putting a copper material into a vacuum device, preheating the vacuum device, and vacuumizing to reach 10<-4> to 10<-3> Pa, wherein the mass of graphene accounts for 0.1-5% of the total mass of graphene, copper and the cooper material; and (3) injecting protective gas to reach 500 to 1000 Pa, heating the vacuum device till the copper material is molten, putting the spheroid into a copper solution in the molten state, stirring, pouring the copper solution together with the molten spheroid into a mold immediately after the spheroid is molten, and cooling to the room temperature in the atmosphere of the protective gas, so as to obtain a copper-graphene composite ingot. The copper-graphene composite prepared by adopting the preparation method provided by the invention is high in electrical conductivity, and the graphene distribution is uniform.

Description

Technical field [0001] The invention relates to a copper-graphene composite material and a preparation method. Background technique [0002] Graphene is a two-dimensional crystal. The carbon atoms are arranged in hexagons and connected to each other to form a carbon molecule. Its structure is very stable. As the number of connected carbon atoms increases, this two-dimensional carbon molecule The plane keeps expanding, and the molecule keeps getting bigger. A single layer of graphene has a thickness of only one carbon atom, that is, 0.335 nanometers, which is equivalent to one-200,000th of the thickness of a hair. There are approximately 1.5 million layers of graphene in 1mm thick graphite. Graphene is the thinnest material known, and it has the advantages of extremely high specific surface area, super conductivity and strength. Its thermal conductivity is as high as 5300W / (m·K), which is higher than carbon nanotubes and diamonds, and its electron mobility exceeds 15000cm at roo...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/10C22C9/00C22C32/00
CPCC22C1/1036C22C9/00C22C32/0084C22C1/1047
Inventor 姚大伟张远望李冬俊
Owner SHANGHAI ELECTRIC CABLE RES INST
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