Vol.:(0123456789) Applied Composite Materials https://doi.org/10.1007/s10443-020-09838-y 1 3 Self‑Reinforced Polypropylene Composites based on Discontinuous Tapes ‑ An Experimental and Numerical Study of the Influence of Tape Length Stergios Goutianos 1 · Norbert O. Cabrera 2 · Ben Alcock 3 · Neil Reynolds 4 · Ton Peijs 4 Received: 20 September 2019 / Accepted: 21 October 2020 © The Author(s) 2020 Abstract The creation of highly oriented, coextruded polypropylene (PP) tapes allows the produc- tion of recyclable self-reinforced polypropylene (SRPP) or all-PP composites, with a large temperature processing window and high volume reinforcement content ( ∼90%). The objective of this research is to assess the performance potential of SRPP composites based on discontinuous or short tapes. For this, the critical tape length for effective mechanical reinforcement of aligned discontinuous PP tapes was determined, while the stress transfer from PP matrix to PP tape was investigated in single tape model composites in combina- tion with an optical strain mapping technique. Mechanical behaviour of both single tape as well as aligned tape model composites was evaluated using finite element analysis (FEA) and used to predict the properties of randomly oriented short tape composites. These dis- continuous tape SRPP composites may be of interest from a manufacturing as well as recy- cling point of view. In terms of manufacturing, such systems are of interest as they may show improved formability during stamping or compression moulding operations while from a recycling point of view it would allow the re-use of production waste like cuttings of fabrics or tapes. Keywords Self-reinforced polypropylene · Short-fibre composites · Stress transfer · Recycling · Mechanical properties · Finite element analysis This paper is dedicated to the memory of Dr. Norbert Cabrera. * Ton Peijs [email protected] Stergios Goutianos [email protected] 1 Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology, Teknologivegen 22, 2815 Gjøvik, Norway 2 School of engineering and Materials Science, Queen Mary University of London, Mile End Road E1 4NS London, UK 3 Materials and Nanotechnology SINTEF Industry, 0314 Oslo, Norway 4 WMG, Materials Engineering Centre, University of Warwick, CV4 7AL Coventry, UK
Self‑Reinforced Polypropylene Composites based on Discontinuous Tapes ‑ An Experimental and Numerical Study of the Infuence of Tape Length
Jun 30, 2023
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