Low velocity impact performance of recyclable all-polypropylene composites

Highly oriented polypropylene (PP) tapes, with high tensile strength and stiffness achieved by molecular orientation during solid state drawing are consolidated to create high performance recyclable “all-polypropylene” (all-PP) composites. These composites possess a large temperature processing wind...

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Bibliographic Details
Published in:Composites science and technology 2006-09, Vol.66 (11), p.1724-1737
Main Authors: Alcock, B., Cabrera, N.O., Barkoula, N.-M., Peijs, T.
Format: Article
Language:English
Subjects:
A. Fabric/Textiles
A. Recycling
Applied sciences
B. Impact behaviour
B. Interface
C. Delamination
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
Polymer industry, paints, wood
Technology of polymers
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Description
Summary:Highly oriented polypropylene (PP) tapes, with high tensile strength and stiffness achieved by molecular orientation during solid state drawing are consolidated to create high performance recyclable “all-polypropylene” (all-PP) composites. These composites possess a large temperature processing window (>30 °C) and a high volume fraction of highly oriented PP (>90%). This large processing window is achieved by using co-extruded, highly drawn PP tapes. This paper investigates the impact resistance of these all-PP composites, and the relationship between penetrative and non-penetrative impact behaviour, and composite consolidation conditions. The response of all-PP composites to falling weight impact is reported together with a comparison to conventional commercial glass reinforced polypropylene composites. A model for energy absorption is proposed by comparison with previous studies based on interfacial and tensile failure of tapes and composites.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2005.11.010