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A kind of method for preparing graphene-enhanced aluminum-based composite material with multi-layer graphene micro-sheet as raw material

A technology of graphene microflakes and reinforced aluminum matrix, which is applied in the field of graphene-reinforced aluminum-based composite materials, can solve the problems of high cost and difficult dispersion of graphene-reinforced aluminum-based composite materials, and achieve easy industrial production and application, The process method is simple and the effect of excellent performance

Active Publication Date: 2018-12-11
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem that the dispersion of single-layer or few-layer graphene in the aluminum-based composite material is difficult and the cost of the graphene-reinforced aluminum-based composite material is high in the preparation process of the current graphene-reinforced aluminum-based composite material, the present invention proposes a multilayer Method for preparing graphene-reinforced aluminum matrix composites with graphene microsheets as raw materials

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  • A kind of method for preparing graphene-enhanced aluminum-based composite material with multi-layer graphene micro-sheet as raw material

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specific Embodiment approach 1

[0039] Specific embodiment one: present embodiment is a kind of method for raw material preparation graphene reinforced aluminum matrix composite material with multi-layer graphene microchip, and this method is carried out according to the following steps:

[0040] 1. Weighing

[0041] Take by weighing 0.5%~4% multilayer graphene microchip and 96%~99.5% aluminum metal powder by mass fraction; Industrial pure aluminum block, the weight ratio of industrial pure aluminum block and above-mentioned aluminum metal powder is (3~10 ):1;

[0042] 2. Dispersion of multilayer graphene microflakes and prefabricated block formation

[0043] Put the multilayer graphene microflakes and aluminum metal powder weighed in step 1 into a ball mill tank, ball mill the obtained mixed powder at a speed of 100-400rpm for 4-15 hours, and put the mixed powder obtained after ball milling into a cold-press mold Carry out cold pressing to obtain multilayer graphene microchip / aluminum prefabricated body; ...

specific Embodiment approach 2

[0058] Embodiment 2: This embodiment differs from Embodiment 1 in that: the average diameter of the multilayer graphene microflakes in Step 1 is 100 nm to 10 μm, and the average thickness is 6 to 50 nm. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0059] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the average particle size of the aluminum metal powder in Step 1 is 1-30 μm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing a graphene-reinforced aluminum-based composite material by using multilayer graphene microchips as raw materials, and relates to a method for graphene-reinforced aluminum-based composite materials. The invention aims to solve the problems that the dispersion of single-layer or few-layer graphene in the aluminum-based composite material is difficult and the cost of the graphene-reinforced aluminum-based composite material is high in the current preparation process of the graphene-reinforced aluminum-based composite material. Preparation method: 1. Weighing multilayer graphene microflakes, aluminum metal and industrial pure aluminum block; 2. Dispersing multilayer graphene microflakes and forming prefabricated blocks; 3. Aluminum metal impregnation; 4. Large plastic deformation treatment ; 5. Homogenization of components. The present invention uses low-priced multi-layer graphene microchips as the reinforcement raw material, so the cost is significantly lower than that of the composite material directly using few-layer graphene as the reinforcement; the prepared graphene-reinforced aluminum-based composite material has excellent comprehensive performance and is easy to realize Industrial production and application. The invention is suitable for preparing graphene-reinforced aluminum-based composite materials.

Description

Technical field: [0001] The invention relates to a method for graphene-reinforced aluminum-based composite materials. Background technique: [0002] Graphene has a tensile strength as high as 125GPa, an elastic modulus of 1TPa, and a thermal conductivity of 5000W / (m K), which is undoubtedly a nearly ideal reinforcement with superior comprehensive performance. According to the number of layers, graphene can be divided into single-layer graphene, double-layer graphene, few-layer graphene (3-10 layers) and multi-layer graphene (the number of layers is more than 10 layers, and the total thickness is less than 10nm). At present, the research on using graphene to improve the performance of resins and ceramics is the most active, while the research on using graphene to strengthen metal matrix, especially aluminum matrix composites is relatively less. The preparation methods are mainly solid-phase method and liquid-phase method. The solid-phase method includes various powder metall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/03C22C21/00C22F1/04
CPCC22C1/1036C22C21/00C22F1/04C22C1/1073
Inventor 武高辉杨文澍张强修子扬姜龙涛陈国钦乔菁康鹏超芶华松
Owner HARBIN INST OF TECH