Cellulose based carbon fiberes have unique characteristics such as low thermal conductivity, low density, high purity, excellent ablation resistance, and high flexibility and can be used in special fields which other carbon fibers cannot satisfy, such as space flight and the aviation industry. In this work, Lyocell fibers filled with various amounts of carbon black were prepared. Wide angle X-ray diffraction (WAXD) results showed that carbon black filled Lyocell fibers still had a cellulose II crystal structure and kept the characteristic peak of carbon black at the same time. The results of mechanical properties showed a slight reduction in the carbon black filled Lyocell fiber. Moreover, the heat stabilities of the carbon black filled Lyocell fibers showed no obvious change. The residue of carbon black filled Lyocell fiber at 1000 deg C was higher than that of Lyocell fiber, implying higher carbon yield could be obtained for the carbon black filled Lyocell precursor. Scanning electron microscopy (SEM) experiments showed that the surface and the cross section of carbon black filled Lyocell fiber were smooth and round, which are consistent with the carbon fiber precursor. The WAXD pattern of carbon black filled Lyocell-based carbon fiber was different from that of Lyocell-based carbon fiber. The addition of carbon black transfers the diffraction peak of carbon fiber while keeping the characteristic structure of carbon black. The results of mechanical properties of carbon fibers show that, if an appropriate amount of carbon black was chosen, carbon fiber with better properties than Lyocell-based carbon fiber could be obtained by using the carbon black filled Lyocell fibers as the precursor.


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    Title :

    Nano-carbon black filled Lyocell fiber as a precursor for carbon fiber


    Contributors:
    Zhang, Huihui (author) / Guo, Liwei (author) / Shao, Huili (author) / Hu, Xuechao (author)

    Published in:

    Publication date :

    2006


    Size :

    10 Seiten, 9 Bilder, 6 Tabellen, 18 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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