Influence of low shear mixing settings on the mechanical properties of long glass fibre polypropylene

Thomas A. de Bruijn, Guillaume Almire Vincent, Ferrie van Hattum

    Research output: Contribution to conferencePaperpeer-review


    The influence of several mixing settings on the mechanical properties were studied. A Long fibre thermoplastic glass polypropylene material was mixed, compression moulded and analysed by flexural tests and charpy impact. In a low-shear mixing machine, chosen for limited fibre length degradation, six parameters were varied for a set of experimental work: fibre fraction, fibre length, processing temperature, mixing time, mixing speed and filling ratio of the cavity. Experimental results are in line with the predictive model of Tandon-Weng for stiffness and show a similar trend as the Kelly-Tyson model for strength. Little influence of the varied process parameters is seen, indicating the robustness of the process.
    Original languageEnglish
    Publication statusPublished - 2017
    EventSAMPE Europe Conference 2017 - Filderhalle Leinfelden-Echterdingen, Stuttgart, Germany
    Duration: 14 Nov 201716 Nov 2017


    ConferenceSAMPE Europe Conference 2017
    Internet address


    • long fibre thermoplastics
    • mechanical testing
    • thermoplastic composites
    • recycling
    • low shear mixing


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