Mechanical properties of densified untwisted carbon nanotube yarn / epoxy composites

Risa Yoshizaki, Kim Tae Sung, Atsushi Hosoi, Hiroyuki Kawada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Carbon nanotubes (CNTs) have very high specific strength and stiffness. The excellent properties make it possible to enhance the mechanical properties of polymer matrix composites. However, it is difficult to use CNTs as the reinforcement of long fibers because of the limitation of CNT growth. In recent years, a method to spin yarns from CNT forests has developed. We have succeeded in manufacturing the unidirectional composites reinforced with the densified untwisted CNT yarns. The untwisted CNT yarns have been manufactured by drawing CNTs through a die from vertically aligned CNT arrays. In this study, the densified untwisted CNT yarns with a polymer treatment were fabricated. The tensile strength and the elastic modulus of the yarns were improved significantly by the treatment, and they were 1.9 GPa and 140 GPa, respectively. Moreover, the polymer treatment prevented the CNT yarns from swelling due to impregnation of the matrix resin. Finally, the high strength CNT yarn composites which have higher volume fraction than a conventional method were successfully fabricated.

    Original languageEnglish
    Title of host publicationASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015
    PublisherAmerican Society of Mechanical Engineers
    Volume1
    ISBN (Print)9780791856826
    DOIs
    Publication statusPublished - 2015
    EventASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015 - Charlotte, United States
    Duration: 2015 Jun 82015 Jun 12

    Other

    OtherASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015
    CountryUnited States
    CityCharlotte
    Period15/6/815/6/12

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering

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  • Cite this

    Yoshizaki, R., Sung, K. T., Hosoi, A., & Kawada, H. (2015). Mechanical properties of densified untwisted carbon nanotube yarn / epoxy composites. In ASME 2015 International Manufacturing Science and Engineering Conference, MSEC 2015 (Vol. 1). American Society of Mechanical Engineers. https://doi.org/10.1115/MSEC20159342