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Graphene foam aluminum composite metal material and preparing method

A composite metal material, graphene foam technology, applied in the direction of improving energy efficiency, process efficiency and other directions, can solve the problems of unsatisfactory strengthening effect, low density and high strength, and unstable performance, and achieve large-scale industrial production, The effect of high product quality and stable properties

Active Publication Date: 2017-12-08
德州市洛泰商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the technical defects that the performance of the graphene foamed aluminum composite material obtained in the prior art is not stable enough, and the strengthening effect is not ideal enough, the present invention proposes a graphene foamed aluminum composite metal material and its preparation method, which are dispersed by grinding and dispersing the foaming agent and graphene Uniform, then mixed with metal aluminum powder, through laser sintering, the foaming agent is foamed, and the graphene is dispersed on the interface of the foam, cooled to obtain a graphene foam aluminum composite metal material, and further to obtain a stable, uniform, low-density Aluminum foam material with high strength characteristics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix and disperse 8 parts by weight of flake graphite powder, 3 parts by weight of intercalation agent graphene oxide quantum dots and 1.5 parts by weight of dispersant oleic acid amide in a high-speed mixer at a speed of 1200 rpm for 25 minutes, and set the processing temperature of the high-speed mixer The temperature is 200°C so that the intercalation agent is inserted between the graphite layers, and the dispersant disperses the graphene while peeling off the graphite to obtain dispersed graphene;

[0036] (2) Mix the dispersed graphene obtained in step (1) with 2-10 parts of blowing agent TiH 2 Add them together into a vacuum container made of 304 stainless steel with a vacuum degree of 10Pa, stir at a speed of 600 rpm, stir evenly, and stir and mix at a temperature of 100°C to obtain a graphene / foaming agent mixed powder;

[0037](3) Mix the graphene / foaming agent mixed powder obtained in step (2) with 72 parts of high-purity aluminum powder with a particle siz...

Embodiment 2

[0041] (1) 10 parts by weight of expanded graphite powder, 0.5 parts by weight of intercalation agent graphene quantum dots and 1.5 parts by weight of dispersant erucamide were mixed and dispersed in a high-speed mixer at a speed of 600 rpm for 25 minutes, and the processing temperature of the high-speed mixer was set to 300°C, so that the intercalation agent is inserted between the graphite layers, and the dispersant disperses the graphene while peeling off the graphite to obtain dispersed graphene;

[0042] (2) Mix the dispersed graphene obtained in step (1) with 10 parts of blowing agent ZrH 2 Join together in a vacuum vessel made of 304 stainless steel with a vacuum degree of 10-1000Pa, stir at a speed of 100 rpm, stir evenly, and stir at a temperature of 50°C to obtain a graphene / foaming agent mixed powder;

[0043] (3) Mix the graphene / foaming agent mixed powder obtained in step (2) with 80 parts of aluminum-magnesium alloy powder, stir evenly, then pour it into a mold, ...

Embodiment 3

[0047] (1) 8 parts by weight of highly oriented graphite, pyrolytic graphite mixed with graphite powder, 1.5 parts by weight of single-layer MoS 2 and 2.5 parts by weight of polyethylene adipate were mixed and dispersed in a high-speed mixer at a speed of 800 rpm for 15 minutes, and the processing temperature of the high-speed mixer was set to 200-400°C so that the single-layer MoS 2 The intercalation agent is inserted between the graphite layers, and the dispersant disperses the graphene while peeling off the graphite to obtain dispersed graphene;

[0048] (2) Add the dispersed graphene obtained in step (1) and 2-10 parts of foaming agent together into a vacuum container made of 304 stainless steel with a vacuum degree of 500 Pa, and the stirring speed is 100-600 rpm, and stir evenly. Stirring and mixing temperature is 150°C to obtain graphene / foaming agent mixed powder;

[0049] (3) Mix the graphene / foaming agent mixed powder obtained in step (2) with 78 parts of aluminum-m...

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Abstract

The invention provides a graphene foam aluminum composite metal material and a preparing method. The preparing method comprises the following steps that a foaming agent and graphene are evenly dispersed by grinding and then mixed with aluminum metal powder; and the foaming agent is uniformly decomposed and releases gas through laser sintering, so that aluminum alloy is in a foam state by expanding of the gas, graphene is dispersed on the interface of the foam, and then the graphene foam aluminum composite metal material is obtained after cooling; the metal aluminum foaming process and the graphene strengthening process are conducted at the same time, so that the technical defects that the performance is not stable and the strengthening effect is not ideal of graphene foam aluminum composite material prepared through an existing method are overcome; the graphene foam aluminum composite metal material with characteristics of being stable, uniform, low in density and high in strength is prepared; and the prepared graphene foam aluminum composite metal material is stable in property, easy to store and convey and realize large-scale industrial production.

Description

technical field [0001] The invention relates to the field of metal composite material processing, in particular to a graphene foamed aluminum composite metal material and a preparation method thereof. Background technique [0002] Aluminum foam is a kind of porous material with high porosity, which has small specific gravity, heat resistance, sound absorption, shock resistance, and special physical and chemical properties. It can be used not only as a functional material, but also as a structural material. It has broad application prospects in the fields of machinery, electronics, construction, high-speed rail, automobiles, light chemical industry, military industry, etc. The market prospect is attractive, such as being used as a lightweight decorative building material, Light chemical fillers and catalysts, heat exchangers, flame retardant materials, sound insulation, shock absorption and impact resistance, electromagnetic shielding, etc. As an excellent sound-absorbing ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F3/105C22C21/00
CPCB22F3/105B22F3/1125C22C21/00C22C32/0084Y02P10/25
Inventor 陈庆曾军堂陈兵
Owner 德州市洛泰商贸有限公司
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