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Graphene and alumina whisker co-reinforced copper matrix composite material preparation method and product thereof

A technology of copper-based composite materials and alumina whiskers, which is applied in the field of preparation of copper-based composite materials, can solve problems such as inability to disperse and bond, and graphene is easy to agglomerate, and achieve excellent physical and chemical properties retention, good uniformity, and increased density. Effect

Active Publication Date: 2020-12-22
CHENGDU TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is easy to agglomerate and cannot be dispersedly combined with the copper matrix to play its role

Method used

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  • Graphene and alumina whisker co-reinforced copper matrix composite material preparation method and product thereof
  • Graphene and alumina whisker co-reinforced copper matrix composite material preparation method and product thereof
  • Graphene and alumina whisker co-reinforced copper matrix composite material preparation method and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Preparation of copper matrix composites co-reinforced with graphene and alumina whiskers

[0065] according to figure 1 The flow chart for the preparation of graphene and alumina whiskers co-reinforced copper matrix composites is shown.

[0066] First prepare graphene modified by rutin surface: step a, graphene is added to 2.0×10 -5 g / L rutin solution, stirred evenly to obtain a mixed solution, wherein the ratio of the weight of graphene to the volume of rutin aqueous solution was 1.0g:45mL.

[0067] Step b, ultrasonically disperse the mixed solution obtained in step a for 25 minutes, place it for 24 hours, filter it with suction, and dry it in vacuum to obtain graphene surface-modified by rutin.

[0068] 0.1 g of the surface-modified graphene prepared in Example 1 was uniformly dispersed in 100 mL of deionized water, and after standing for 3 days, the precipitation gradually increased under the action of gravity, but the graphenes remained dispersed and did not agglo...

Embodiment 2

[0078] Preparation of copper matrix composites co-reinforced with graphene and alumina whiskers

[0079] according to figure 1 The flow chart for the preparation of graphene and alumina whiskers co-reinforced copper matrix composites is shown.

[0080] First prepare graphene modified by rutin surface: step a, graphene is added to 2.2 × 10 -5 In the rutin solution of g / L, stir evenly, obtain mixed liquor, wherein the weight of graphene and the volume ratio of rutin aqueous solution are 0.08g:40mL.

[0081] Step b, ultrasonically disperse the mixed liquid obtained in step a for 15 minutes, place it for 20 hours, filter it with suction, and dry it in vacuum to obtain graphene surface-modified by rutin.

[0082] Preparation of surface-modified alumina whiskers:

[0083] Step a, adding alumina whiskers into 2.0 g / L sodium lauryl sulfate aqueous solution, stirring evenly to obtain a mixed solution. Wherein, the ratio of the weight of aluminum oxide whiskers to the volume of sodi...

Embodiment 3

[0091] Preparation of copper matrix composites co-reinforced with graphene and alumina whiskers

[0092] according to figure 1 The flow chart for the preparation of graphene and alumina whiskers co-reinforced copper matrix composites is shown.

[0093] First prepare graphene modified by rutin surface: step a, graphene is added to 1.8×10 -5 g / L rutin solution, stirred evenly to obtain a mixed solution, wherein the ratio of the weight of graphene to the volume of rutin aqueous solution was 0.11g:50mL.

[0094] Step b, ultrasonically disperse the mixed solution obtained in step a for 30 minutes, place it for 25 hours, filter it with suction, and dry it in vacuum to obtain graphene surface-modified by rutin.

[0095] Preparation of surface-modified alumina whiskers:

[0096] Step a, adding alumina whiskers into 1.7 g / L sodium lauryl sulfate aqueous solution, stirring evenly to obtain a mixed solution. Wherein, the ratio of the weight of aluminum oxide whiskers to the volume of...

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Abstract

The invention discloses a preparation method of a graphene and aluminum oxide whisker co-reinforced copper-based composite material and a product thereof. The preparation method comprises the following steps: wet-grinding and mixing surface-modified aluminum oxide whiskers, surface-modified graphene and copper powder, and performing vacuum drying to obtain a mixture; then performing compression molding on the mixture to obtain a pressed blank; performing vacuum hot-pressing sintering on the pressed blank, cooling, and then performing hot isostatic pressing treatment on a sample to obtain the graphene and aluminum oxide whisker co-reinforced copper-based composite material, wherein the graphene and aluminum oxide whisker co-reinforced copper-based composite material comprises the followingcomponents in percentage by weight: 0.5-2.0% of the surface-modified aluminum oxide whiskers, 0.25-1.0% of the surface-modified graphene and the balance of the copper powder; and the weight ratio of the surface-modified aluminum oxide whiskers to the surface-modified graphene is (1-4): 1. The copper-based composite material prepared by the method can have excellent mechanical properties and relatively high density at the same time.

Description

technical field [0001] The invention relates to the technical field of copper-based composite material preparation, in particular to a method for preparing a copper-based composite material co-reinforced by graphene and alumina whiskers and a product thereof. Background technique [0002] Copper-based composite materials are considered to be new functional materials with great development potential and application prospects, and have gradually attracted great attention from various countries. Copper-based composite materials are widely used in aerospace, electrical and electronic fields, especially in overhead wires of trams and electric trains, large-capacity contact switches, and integrated circuit lead frames. [0003] The purpose of introducing reinforcements into copper is to improve the mechanical properties of copper materials at room temperature and high temperature, while retaining the excellent electrical and thermal conductivity of copper materials as much as poss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/04C22C47/14C22C49/02C22C49/14C22C101/04C22C121/02
CPCC22C47/04C22C47/14C22C49/02C22C49/14
Inventor 邵甄胰齐峰喻红梅蒋小松朱旻昊
Owner CHENGDU TECH UNIV
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