Method for preparing graphene reinforced aluminum-based composite with multi-layer graphene nanoplatelets as raw materials

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 difficult dispersion and high cost of graphene-reinforced aluminum-based composite materials, and achieve simple process methods and easy industrial production And application, to overcome the effect of lower stress

Active Publication Date: 2017-08-08
HARBIN INST OF TECH
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Problems solved by technology

[0009] 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 pre

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  • Method for preparing graphene reinforced aluminum-based composite with multi-layer graphene nanoplatelets as raw materials

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specific Embodiment approach 1

[0044] 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:

[0045] 1. Weighing

[0046] 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;

[0047] 2. Dispersion of multilayer graphene microflakes and prefabricated block formation

[0048] 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

[0063] 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

[0064] 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 with multi-layer graphene nanoplatelets as raw materials, and relates to a method for the graphene reinforced aluminum-based composite. The method aims to solve the problems that the dispersion difficulty of single-layer or few-layer graphene is high in the preparation method of a graphene reinforced aluminum-based composite at present and the cost of the graphene reinforced aluminum-based composite is high. The preparation method comprises the steps that the multi-layer graphene nanoplatelets, aluminum metal and commercial pure aluminum blocks are weighed; secondly, the multi-layer graphene nanoplatelets are dispersed, and precast blocks are molded; thirdly, the aluminum metal is infiltrated; fourthly, severe plastic deformation treatment is conducted; and fifthly, composition homogenization treatment is conducted. The low-cost multi-layer graphene nanoplatelets are used as reinforcement raw materials, so that the cost is obviously lowered compared with composites with few-layer graphene as reinforcements directly; and the prepared graphene reinforced aluminum-based composite is excellent in comprehensive performance, and industrialization production and application can be achieved easily. The method is suitable for preparation of the graphene reinforced aluminum-based composite.

Description

[0001] Technical field: [0002] The invention relates to a method for graphene-reinforced aluminum-based composite materials. [0003] Background technique: [0004] 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 variou...

Claims

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Application Information

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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
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