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Preparation method of silicone oil repair graphene reinforced aluminum base composite material

A composite material and reinforced aluminum-based technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of difficulty in uniform dispersion of graphene and increased content of graphene defects, and achieve low volatility, convenient follow-up operation, and thick diameter greater effect than

Active Publication Date: 2019-01-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the defect content of graphene increases in the process of graphene-reinforced aluminum-based composite materials and the problem that graphene is difficult to uniformly disperse in metal-based composite materials, the present invention proposes a preparation of silicone oil repairing graphene-reinforced aluminum-based composite materials method

Method used

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  • Preparation method of silicone oil repair graphene reinforced aluminum base composite material
  • Preparation method of silicone oil repair graphene reinforced aluminum base composite material
  • Preparation method of silicone oil repair graphene reinforced aluminum base composite material

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specific Embodiment approach 1

[0033] Specific embodiment one: the preparation method of silicone oil repairing graphene reinforced aluminum matrix composite material in this embodiment is carried out according to the following steps: 1. Weighing

[0034] Take by weighing 0.5%~4% graphene, 0.5%~10% silicone oil and the aluminum metal powder of surplus as raw material by mass fraction; Described graphene is few-layer graphene, and average sheet diameter is 200nm~25 μ m, and average thickness is 1~30nm;

[0035] The aluminum metal powder is aluminum alloy;

[0036] 2. Graphene dispersion and prefabricated block forming

[0037] Put the graphene, silicone oil and aluminum metal powder weighed in step 1 into a ball milling tank, ball mill the obtained mixed powder at a speed of 150-400 rpm for 0.5-4 hours, and put the mixed powder obtained after ball milling into a cold-pressing mold for cold Press to obtain silicone oil-graphene / aluminum prefabricated body;

[0038] 3. Prefabricated body insulation

[0039] ...

specific Embodiment approach 2

[0050] Embodiment 2: This embodiment is different from Embodiment 1 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 the first embodiment.

specific Embodiment approach 3

[0051] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the silicone oil in Step 1 is polydimethylsilicone oil or polyphenyl silicone oil. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a silicone oil repair graphene reinforced aluminum base composite material, and relates to a preparation method of a graphene reinforced aluminum base composite material. The preparation method aims to solve the problems of higher graphene defect content and difficulty in uniform dispersion of graphene in a metal base composite material in the preparation process of the graphene reinforced aluminum base composite material. Graphene, aluminum metal powder and silicone oil are weighed to fill a ball milling tank for ball milling and cold pressing to obtain silicone oil-graphene / aluminum precast bodies; the precast bodies are insulated to obtain silicone oil repair graphene / aluminum precast bodies; and finally, the composite material is prepared. Silicone oil grinding aids are used for thermal decomposition to generate active Si atoms to form more stable silicon replaced structures, so that the performances of the material are improved. After silicone oil coats the surface of the aluminum metal powder, shearing force in collision is easily acted on the surface of the aluminum metal powder, so that the tabletting of the aluminum metal powder is facilitated, and the reduction of agglomerating graphene in the composite material is facilitated. The preparation method is suitable for preparing the graphene reinforced aluminum base composite material.

Description

Technical field: [0001] The invention relates to a preparation method of a graphene-reinforced aluminum-based composite material. 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 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/04C22C1/10C22C21/00
CPCC22C1/1005C22C1/1084C22C21/00B22F9/04B22F2009/043B22F1/10
Inventor 鞠渤宇武高辉杨文澍姜龙涛张强陈国钦康鹏超修子扬乔菁
Owner HARBIN INST OF TECH
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