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    Highly improved PP/CNTs sheet prepared by tailoring crystallization morphology through solid-phase die drawing and multilayer hot compression

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    Publication date
    2020-08
    Author
    Lin, X.
    Spencer, Paul E.
    Gong, M.
    Coates, Philip D.
    Keyword
    Crystallization
    Multilayer
    Polypropylene‐carbon nanotubes composites
    Solid-phase orientation
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    Simply melt blended polypropylene/carbon nanotubes composites (PP/CNTs) usually present mechanical deterioration. In this work, multilayered sheet of PP/CNTs with improved tensile property was obtained by solid-phase orientation and hot compression. The initially blended PP/CNTs were highly orientated by employing a constrained slit die and hot compressed under a certain temperature and pressure by stacking eight layers together. The effects of compression temperature and pressure on the tensile property and AC conductivity of the multilayered sheets were examined to explore the evolution of hierarchical crystallization morphology and CNT networks. The multilayered sheet which was hot compressed at 184°C and 5 MPa demonstrated an optimum tensile strength of ∼132.5 MPa and an elongation at break ∼52.7%, respectively, raised by almost 3-fold compared with those initially blended PP/CNTs. By increasing compression temperature and decreasing pressure, the AC conductivity showed an increase of 2 to 4 orders of magnitude.
    URI
    http://hdl.handle.net/10454/18181
    Version
    No full-text in the repository
    Citation
    Lin X, Spencer P, Gong M et al (2020) Highly improved PP/CNTs sheet prepared by tailoring crystallization morphology through solid-phase die drawing and multilayer hot compression. Polymer Crystallization. 3(4): e10137.
    Link to publisher’s version
    https://doi.org/10.1002/pcr2.10137
    Type
    Article
    Collections
    Engineering and Informatics Publications

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