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Graphene reinforced copper-based composite material and preparation method thereof

A copper-based composite material and graphene technology are applied in graphene-reinforced copper-based composite materials and their preparation, and in the field of copper-based composite materials. Serious damage, good enhancement effect, good dispersion effect

Inactive Publication Date: 2016-08-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of graphene and metal compounding difficulties or poor compounding effects in the prior art, and provide a graphene-reinforced copper-based composite material

Method used

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  • Graphene reinforced copper-based composite material and preparation method thereof
  • Graphene reinforced copper-based composite material and preparation method thereof
  • Graphene reinforced copper-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add few-layer graphene to 10mg / mL gallic acid aqueous solution, and disperse evenly, wherein the ratio of the weight of graphene to the volume of gallic acid aqueous solution is 0.1g: 40mL; let it stand for 24h, filter, and take the filter residue at 60°C After vacuum drying for 2 h, the surface-modified graphene was obtained.

[0047] 0.1 g of the surface-modified graphene prepared in this example 1 was evenly dispersed in 100 mL of deionized water, and after standing for 5 days, the precipitation gradually increased under the action of gravity, but the graphene remained in a dispersed state without agglomeration; At the same time, compared with unmodified graphene, precipitation occurred after standing for 1 day, and agglomeration occurred between graphenes, indicating that the surface-modified graphene prepared in Example 1 had excellent dispersibility.

[0048] The specific surface area of ​​the few-layer graphene is 400-700m 2 / g, the thickness is 0.55~3.74nm, and...

Embodiment 2

[0050] Add few-layer graphene to 3mg / mL gallic acid aqueous solution, and disperse evenly, wherein the ratio of the weight of graphene to the volume of gallic acid aqueous solution is 0.5g: 60mL; let it stand for 12h, filter, and take the filter residue at 70°C After vacuum drying for 1 h, the surface-modified graphene was obtained.

[0051] 0.1 g of the surface-modified graphene prepared in this example was evenly 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 agglomerate. Show that the surface-modified graphene prepared in Example 2 has excellent dispersibility.

Embodiment 3

[0053] Add the few-layer graphene into the gallic acid aqueous solution (supersaturated solution) of 18mg / mL, disperse evenly, wherein the weight of graphene and the volume ratio of gallic acid aqueous solution are 0.05g: 20mL; Stand still for 30h, filter, take The filter residue was vacuum-dried at 80° C. for 3 h to obtain surface-modified graphene.

[0054] 0.1 g of the surface-modified graphene prepared in this example was evenly dispersed in 100 mL of deionized water, and after standing for 2 days, the precipitation gradually increased under the action of gravity, but the graphenes remained dispersed and did not agglomerate. Show that the surface-modified graphene prepared in Example 2 has excellent dispersibility.

[0055] Comparing Examples 1 to 3, it can be seen that the surface-modified graphene prepared in Example 1 gradually precipitates under the action of gravity after standing for 5 days, and the graphenes are still well dispersed without agglomeration. However, ...

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Abstract

The invention discloses a graphene reinforced copper-based composite material. The graphene reinforced copper-based composite material comprises, by weight, 0.5-5% of graphene subjected to surface modification, 2-5% of graphite, 6-15% of Ti3SiC2, and the balance copper. The graphene subjected to surface modification is graphene subjected to gallic acid modification. According to the copper-based composite material, the dispersity of the graphene subjected to surface modification is good, the content of impurities is low, the complete surface appearance is kept, the graphene, the graphite powder, the Ti3SiC2 powder and the copper powder jointly play the enhancement function, the mechanical property and friction abrasion resistance of the copper-based composite material are remarkably improved, and meanwhile the excellent intensity and shock resistance are achieved. The invention further discloses a preparation method of the copper-based composite material. The method is simple in process, production is easy, and wide application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of composite materials, and relates to a copper-based composite material, in particular to a graphene-reinforced copper-based composite material and a preparation method thereof. Background technique [0002] In 2004, Andre Geim and Konstantin Novoselov from the University of Manchester successfully separated stable graphene by mechanical exfoliation for the first time. Graphene has been favored by scholars for its unique two-dimensional structure and unique electrical, optical, and mechanical properties. focus on. Graphene has excellent characteristics such as extremely high mechanical strength, ideal elasticity, low thermal expansion coefficient, and small size, making it the most potential reinforcement material. [0003] Graphene has made rapid progress in strengthening polymer composites, but there are still many difficulties in strengthening metal matrix composites. The main difficulty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05
CPCC22C9/00C22C1/05C22C32/0052C22C32/0084
Inventor 蒋小松刘晚霞宋庭丰张归航邵甄胰朱德贵朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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