Formed part preparation method based on reduced graphene oxide and copper composite material

A composite material and graphene technology, applied in transportation and packaging, metal processing equipment, etc., can solve the problems of high equipment requirements, low sample preparation efficiency, unfavorable wider application of graphene/copper-based composite materials, etc., and meet equipment requirements Low, high production efficiency, the effect of reducing adverse effects

Inactive Publication Date: 2020-02-21
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing preparation processes of graphene / copper-based composites have high equipment requirements and low sample preparation efficiency, which is not conducive to the wider application of graphene / copper-based composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Concrete preparation process comprises the following steps:

[0034] (1) Preparation of graphene oxide / copper mixed powder

[0035] 1.1 Add graphene oxide with a mass fraction of 0.5g to 100ml of absolute ethanol, and use ultrasonic vibration for 2h to obtain a mixed solution;

[0036] 1.2 Add 99.5g of electrolytic copper powder to the graphene oxide solution, and then put it into a ball mill jar. Use high-purity argon to clean the ball mill tank for 3 times, then pump the ball mill tank to a vacuum state (below 1000Pa) for mechanical ball milling, the ball milling time is 20h, the speed is 360r / min, the steel ball material is quenched stainless steel, the ball-to-material ratio is 10:1.

[0037] 1.3 After the ball milling, pour the slurry into a beaker and dry it in a vacuum oven to obtain a graphene oxide / copper mixed powder. The mass percentage of graphene oxide in the graphene oxide / copper mixed powder is 0.5%.

[0038] (2) Graphene oxide / copper mixed powder afte...

Embodiment 2

[0046] Concrete preparation process comprises the following steps:

[0047] (1) Preparation of graphene oxide / copper mixed powder

[0048] 1.1 Add graphene oxide with a mass fraction of 0.5g to 100ml of absolute ethanol, and use ultrasonic vibration for 2h to obtain a mixed solution;

[0049] 1.2 Add 99.5g of electrolytic copper powder to the graphene oxide solution, and then put it into a ball mill jar. Use high-purity argon to clean the ball mill tank for 3 times, then pump the ball mill tank to a vacuum state (below 1000Pa) for mechanical ball milling, the ball milling time is 20h, the speed is 360r / min, the steel ball material is quenched stainless steel, the ball-to-material ratio is 10:1.

[0050] 1.3 After the ball milling, pour the slurry into a beaker and dry it in a vacuum oven to obtain a graphene oxide / copper mixed powder. The mass percentage of graphene oxide in the graphene oxide / copper mixed powder is 0.5%.

[0051] (2) Graphene oxide / copper mixed powder afte...

Embodiment 3

[0059] Concrete preparation process comprises the following steps:

[0060] (1) Preparation of graphene oxide / copper mixed powder

[0061] 1.1 Add graphene oxide with a mass fraction of 0.5g to 100ml of absolute ethanol, and use ultrasonic vibration for 2h to obtain a mixed solution;

[0062] 1.2 Add 99.5g of electrolytic copper powder to the graphene oxide solution, and then put it into a ball mill jar. Use high-purity argon to clean the ball mill tank for 3 times, then pump the ball mill tank to a vacuum state (below 1000Pa) for mechanical ball milling, the ball milling time is 20h, the speed is 360r / min, the steel ball material is quenched stainless steel, the ball-to-material ratio is 10:1.

[0063] 1.3 After the ball milling, pour the slurry into a beaker and dry it in a vacuum oven to obtain a graphene oxide / copper mixed powder. The mass percentage of graphene oxide in the graphene oxide / copper mixed powder is 0.5%.

[0064] (2) Graphene oxide / copper mixed powder afte...

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Abstract

The invention relates to a formed part preparation method based on a reduced graphene oxide and copper composite material. According to the method, graphene oxide / copper mixed powder is prepared through wet ball milling; then, the mixed powder is reduced under hydrogen atmosphere; and finally, the reduced graphene oxide and copper composite material is obtained through a repressing and resinteringpowder metallurgy method. By means of the method, reduced graphene oxide is well and evenly scattered in a copper matrix, the prepared reduced graphene oxide / copper composite material has the advantages of being high in strength, high in plasticity and high in conductivity, the repressing and resintering sintering forming method is simple and controllable in process, low in production cost and high in production efficiency, and large-scale industrialized production is easy to achieve. Formed pieces prepared through the formed part preparation method are little in oxide, less in pore and highin compactness and has excellent comprehensive performance such as high strength, high conductivity and high plasticity.

Description

technical field [0001] The invention relates to the field of forming high-strength and high-conductivity composite materials, in particular to a method for preparing formed parts based on reduced graphene oxide and copper composite materials. Background technique [0002] Copper and copper alloys have excellent electrical and thermal conductivity and good ductility. However, the low strength and hardness of traditional copper and copper alloys greatly limits its application range. Graphene is a new type of two-dimensional nanomaterial. In addition to its high strength and low density, it also has ultra-high electron mobility (2×105cm2 / V s), electrical conductivity and thermal conductivity (5×103W / m·K) and other excellent properties, suitable for the research and development of functional composite materials. At present, the strength and hardness of graphene / copper composites prepared with graphene as a reinforcing phase have been improved. However, due to the poor wettab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C9/00B22F3/16
CPCC22C1/056B22F3/16C22C9/00B22F2998/10B22F2999/00B22F3/1007B22F2201/20B22F1/145B22F3/02B22F3/004B22F2009/043
Inventor 洪起虎燕绍九李秀辉陈翔王晨
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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