Carbon nanotube metal based composite materials and process for preparing the same

A carbon nanotube and composite material technology, applied in the field of carbon nanotube composite materials and their preparation, can solve the problems of low strength of composite materials, and achieve the effects of light impact resistance, excellent performance and light weight

Inactive Publication Date: 2006-07-19
HARBIN INST OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The present invention aims to solve the problem that the existing carbon nanotube metal matrix composite material is squeezed and casted, and when the metal matrix does not completely infiltrate into the reinforced prefabricated block, the reinforced body prefabricated block has been compacted due to the high pressure, resulting in low strength of the composite material. To solve the above problems, a carbon nanotube metal matrix composite material and a preparation method thereof are provided. The technical scheme adopted to solve the above problems is as follows:

Method used

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  • Carbon nanotube metal based composite materials and process for preparing the same
  • Carbon nanotube metal based composite materials and process for preparing the same

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specific Embodiment approach 1

[0016] Embodiment 1: The carbon nanotube metal matrix composite material of this embodiment is made of carbon nanotubes and metals, and the volume fraction of carbon nanotubes is 5 to 20%, and the metal (the metal adopts aluminum or aluminum alloy) is 20 to 95%. %.

[0017] The experimental results all show that carbon nanotubes have excellent mechanical properties. The reason why carbon nanotubes have such high strength and toughness is mainly due to the short distance between carbon atoms in carbon nanotubes, the small diameter of single-layer carbon nanotubes, and its nearly perfect structure, making it difficult to reveal defects. In addition, carbon nanotubes have similar wear resistance and friction reduction properties and self-lubricating properties to graphite. In addition, carbon nanotubes prepared by pyrolyzing hydrocarbon gas with catalysts are thin and curved, and are easier to infiltrate and pin in the matrix. Therefore, carbon nanotubes are ideal materials for...

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the carbon nanotube metal matrix composite material is made of 5% carbon nanotubes and 95% aluminum base in terms of volume fraction.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the carbon nanotube metal matrix composite material is made of 14% carbon nanotubes and 86% aluminum base in terms of volume fraction.

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Abstract

The preparation method for composite material with 5-20v% carbon nano tube and 20-95v% metal-base comprises: 1. dispersing with supersonic wave, cleaning, and filtering for tube treatment; 2. plating Ni on the tube; 3. grinding the polyimide; 4. preparing mixed solution with supersonic wave; 5. pouring the mixed solution into mold for preblocking; 6. putting the block on mold, casting metal-base liquid for heating and extruding. This invention overcomes detect in prior art, and obtains the material with compact tissue and well interface bond.

Description

technical field [0001] The invention relates to a carbon nanotube composite material and a preparation method thereof. Background technique [0002] Metal matrix composites have developed rapidly in the last 20 years. Carbon nanotubes are a new type of self-assembled single-molecule material, which is a seamless nanoscale tubular material curled from a single-layer or multi-layer carbon hexagonal planar network, and each nanotube is a carbon atom passing through SP 2 The cylindrical surface composed of hexagonal planes formed by hybridization and the surrounding three atoms is completely bonded. The side length of the plane hexagonal unit cell is 0.246nm, and the shortest carbon-carbon bond length is 0.142nm, which is close to the atomic stacking distance ( 0.139nm). If carbon nanotubes consist of only a cylindrical surface surrounded by a graphite layer, we call them single-walled carbon nanotubes (SWCNTs). If carbon nanotubes are nested by more than one cylindrical surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/14
Inventor 邓春锋马艳霞王德尊张学习林强
Owner HARBIN INST OF TECH
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