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Graphene/copper composite wire and preparation method thereof

A composite wire and graphene technology, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, conductive materials, etc., can solve the problems of conductivity, strength, and processing performance, etc., to solve the problem of easy cracking, improve processing performance, Improve the effect of interface binding

Active Publication Date: 2020-06-30
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a graphene / copper composite wire and its preparation method, so as to overcome the inadequacies of existing copper alloys and copper-based composite wires in terms of electrical conductivity, strength, and processing performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of graphene / copper composite wire rod of the present invention comprises following specific steps:

[0034] (1) Mix the graphene powder into the zirconium propionate alcohol solution, heat it in a drying oven to evaporate the alcohol, and make a mixture of graphene and zirconium propionate; the number of layers of the graphene powder used is 1 to 15 layers , The drying oven heating temperature is 50 ℃ ~ 120 ℃.

[0035] (2) The mixture is subjected to the first heat treatment in the air environment; the first heat treatment method, the heat treatment temperature is 150°C-320°C, and the heat treatment time is 1h-8h.

[0036] (3) The mixture is subjected to a second heat treatment in a vacuum environment; for the second heat treatment method, the heat treatment temperature is 500°C to 750°C, and the heat treatment time is 4h to 16h.

[0037] (4) Mix the graphene mixture and copper powder evenly; the mixing methods of graphene powder and copper powde...

Embodiment 1

[0045] A copper / graphene composite wire and a preparation method thereof, comprising the following steps:

[0046] (1) Mix 100g of graphene powder into 10L of 0.3g / L zirconium propionate alcohol solution, the number of layers of graphene powder is 1-5 layers, place it in a drying oven and heat it to 65°C to evaporate the alcohol, Made of graphene and zirconium propionate mixture.

[0047] (2) The mixture is subjected to the first heat treatment in the air environment, the heat treatment temperature is 220° C., and the heat treatment time is 6 hours.

[0048] (3) The mixture is subjected to a second heat treatment in a vacuum environment, the heat treatment temperature is 530° C., and the heat treatment time is 4 hours.

[0049] (4) Mix the graphene mixture and 10kg copper powder uniformly by powder blowing method, and the particle size of the copper powder used is 40 μm.

[0050] (5) The graphene / copper composite green body was prepared by hot pressing and sintering method, ...

Embodiment 2

[0058] A copper / graphene composite wire and a preparation method thereof, comprising the following steps:

[0059] (1) Mix 200g of graphene powder into 10L of 0.15g / L zirconium propionate alcohol solution, the number of layers of graphene powder is 3 to 10 layers, place it in a drying oven and heat it to 65°C to evaporate the alcohol, Made of graphene and zirconium propionate mixture.

[0060] (2) The mixture is subjected to the first heat treatment in the air environment, the heat treatment temperature is 250° C., and the heat treatment time is 5 hours.

[0061] (3) The mixture is subjected to a second heat treatment in a vacuum environment, the heat treatment temperature is 630° C., and the heat treatment time is 3 hours.

[0062] (4) Mix the graphene mixture powder with 10 kg of copper powder uniformly by ball milling, and the particle size of the copper powder used is 60 μm.

[0063] (5) The graphene / copper composite green body was prepared by hot pressing and sintering ...

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Abstract

The invention relates to a graphene / copper composite wire and a preparation method thereof, and belongs to the field of composite processing and heat treatment. The composite wire comprises 0.1-3 wt%of graphene, 0.002 wt% to 0.01 wt% of zirconium and the balance copper. Graphene powder is mixed into a zirconium propionate alcoholic solution, heating is carried out, alcohol evaporates, and a graphene and zirconium propionate mixture is obtained; the mixture is subjected to first heat treatment and second heat treatment in an air environment and a vacuum environment in sequence; the graphene and zirconium propionate mixture and copper powder are mixed to be uniform; a composite billet is prepared through a hot pressing sintering method; a composite bar is prepared through a hot extrusion method; a composite pole or wire is rolled or drawn; the composite rod or wire is subjected to first heat treatment; the composite wire with the size and specification of a finished product is drawn; and second heat treatment is carried out, and the final finished product is obtained. The graphene / copper composite wire prepared through the method has the characteristics of being high in strength andconductivity.

Description

technical field [0001] The invention relates to a graphene / copper composite wire and a preparation method thereof, belonging to the field of composite material processing and heat treatment. Background technique [0002] Copper and copper alloys are widely used in various industrial sectors as electrical and thermal conductive functional materials due to their excellent comprehensive physical and mechanical properties. As the basic material of wire and cable, copper and copper alloy play a very important role. However, with the rapid development of transportation, electric power, and aerospace industries, higher requirements are placed on the conductivity and strength of wires. [0003] The strengthening methods of traditional copper alloys mainly include solid solution strengthening, work hardening, precipitation strengthening and fine grain strengthening. Especially for new high-strength and high-conductivity copper alloys, such as Cu-Mg series, Cu-Cr-Zr series, Cu-Ni-Si...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/05C22F1/08H01B1/02H01B13/00
CPCC22C9/00C22C1/05C22C1/0425C22F1/08H01B1/026H01B13/00
Inventor 杨振冯雪解浩峰黄国杰米绪军彭丽军尹向前
Owner GRIMAT ENG INST CO LTD