Fabrication of High-Strength Carbon Nanotube Fiber
발표자
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초록
내용
Carbon nanotube fiber (CNTF) is a hierarchically-structured assembly of carbon nanotubes (CNTs). CNTF can be fabricated by three methods: wet spinning, forest spinning and direct spinning. Among those, a direct spinning is a method in which CNTF is synthesized and spun simultaneously, so it is fast and scalable. However, since CNTF is rapidly spun, the properties of as-spun CNTF are not quite attractive, so some proper post-treatments are highly required. In this presentation, research progress on CNTF by direct spinning-based method at KIST will be dealt with. In the aspect of CNTF synthesis, the correlation between synthesis conditions and properties of CNTFs will be introduced. In the aspect of post-treatment, two highly-efficient densification methods which can rapidly enhance the strength of as-spun CNTF will be dealt with. Finally, the correlation between sturctures and strengths of CNTFs and new mathematical model reflecting the correaltion will be presented.