Preparation method of carbon nano tube array for spinning

Abstract

The invention discloses a preparation method of a carbon nano tube array for spinning, comprising the following steps of: preparing an oxide buffer layer on a precast silicon substrate and depositing a metal catalyst film on the oxide buffer layer to form a carbon nano tube array growth catalytic structure with composite activity; heating a reaction furnace to the growth temperature of the carbon nano tube in an environment of protective gas; introducing ethylene and carrier gas to the reaction furnace by controlling the flow and the proportion to grow the carbon nano tube array under normal pressure; and finally quickly finishing the growth of the carbon nano tube array. By adopting the application of ethylene CVD preparation method, a catalyst buffer layer structure is prepared by an ion beam assistant deposition method, and the metal catalyst film thickness and the growth technological parameter are controlled. The obtained carbon nano tube array has the advantages of small diameter of the carbon nano tube, small number of tube walls, high carbon tube surface distribution density on the substrate and is useful in high-area preparation, therefore, the invention provides possibility for the application of the carbon nano tube in the industrial spinning manufacturing.

Description

technical field [0001] The invention relates to a method for preparing a large-area spinnable carbon nanotube array, belonging to the field of nanomaterial preparation. Background technique [0002] Carbon nanotube (CNT) has excellent mechanical properties: its tensile strength reaches 50-200GPa, which is 100 times that of steel, but its density is only 1 / 6 of steel, and the theoretical Young's modulus of carbon nanotube can reach 1TPa, so it is Called "super fiber". In addition, carbon nanotubes have good electrical conductivity. Due to their special graphite layered structure, they exhibit different electrical properties and electrical conductivity, and have excellent electrical modulation properties. Therefore, the use of carbon nanotubes to construct new mechanical, electrical, and optical functional devices has become an important direction for the development of carbon nanomaterials. [0003] In recent years, people have made rapid progress in the controllable prepar...

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Problems solved by technology

However, so far, in the preparation of spinnable carbon nanotube arrays with ethylene gas, there is still no breakthrough in the large-area preparation technology, and there is no film-drawing technology for carbon nanotube arrays.

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