Wydawnictwa Uczelniane / TUL Press

Stały URI zbioruhttp://hdl.handle.net/11652/17

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20222

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Experimental study of the tack of flax fibers based thermoplastic composite reinforcements
    (Wydawnictwo Politechniki Łódzkiej, 2022) Joannes, Mathieu; Gautier, Karine; Arnold, Gilles; Wang, Peng
    In this article we tested a flax fibres and polypropylene based composite reinforcement in order to determine its adherence to other surfaces around the melting temperature of polypropylene at 165°C. A rheometer with a thermal chamber is used to do a probe-tack test at a constant temperature. This test consists in three steps, the compaction of the sample between two tabs, the relaxation and the separation of the upper tab from the sample. Tackiness corresponds in the traction force measured during the separation. No tackiness was measured during our first tests although we could observe residue on tab surfaces. Further tests where the temperature is lowered beneath the solidification temperature of polypropylene during the relaxation step will be done. Preliminary results for these tests are promising.
  • Pozycja
    Comparison of composites containing technical embroidery and woven fabric as reinforcement
    (Wydawnictwo Politechniki Łódzkiej, 2022) Poniecka, Agata; Barburski, Marcin; Angulo, David Ranz; Cuartero, Jesus
    The following research present a comparison of the strength values of composites containing two types of reinforcements: technical embroidery and woven fabric. Both types of reinforcements were made of flax roving with a linear mass of 400 tex. The technical embroidery was made on a computerized embroidery machine ZSK, type JCZA 0109-550. The use of technical embroidery technology is in line with the idea of sustainable development by minimizing waste generated in the production of composite reinforcements. Tensile strength and tensile elongation tests were carried out. As a result of the conducted research, it was proved that the composite containing the technical embroidery as the reinforcement showed higher tensile strength in the longitudinal direction, compared to the composite containing the fabric as the reinforcement. On the other hand, the composite containing fabric as a reinforcement showed a greater elongation.