Ultralong orientational carbon nano-tube filament/film and its preparation method
Ultralong orientational carbon nano-tube filament/film and its preparation method
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C01B 31/02, B82B 1/00, B82B 3/00
Tsinghua Univ.
Wei Fei, Zhang Qiang, Zhou Weiping, Qian Weizhong
Key Words:
Ultralong, orientational, carbon nano-tube filament/film, preparation method
The present invention relates to an ultralong oriented carbon nano tube wire/film and its preparation method. The described carbon nano tube wire/film is made up by using mutually-winded and connected tube bundle end portions of several bundles of carbon nano tubes, their orientations are basically identical, the macrodiameter is above micrometer grade, length is above centrimeter grade, the macrothickness of carbon nano tube film is above several tens nanometers, its width is above several tens micrometers and its length is above centrimeter grade. Its preparation method includes the following steps: utilizing floatation process to make the carbon nano tube array be grown out from base surface, then using tension tool to draw carbon nano tube wire or film from one end of carbon nano tube array, utilizing continuous tension to make the tube bundle of carbon nano tube be formed into oriented carbon nano tube wire/film along the tension direction.

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