Fatigue Properties of Highly Oriented Polypropylene Tapes and All-Polypropylene Composites

This paper describes the fatigue behaviour of newly developed all-polypropylene (all-PP) tapes and composites, with reference to the composite processing conditions, testing temperature and making a comparison with commercial alternatives. All-PP tapes are highly oriented and their failure behaviour...

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Bibliographic Details
Published in:Polymers & polymer composites 2008-01, Vol.16 (2), p.101-113
Main Authors: BARKOULA, N.-M, ALCOCK, B, CABRERA, N. O, PEIJS, T
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Fatigue failure
Forms of application and semi-finished materials
Laminates
Materials fatigue
Polymer industry, paints, wood
Polypropylene films
Technology of polymers
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Summary:This paper describes the fatigue behaviour of newly developed all-polypropylene (all-PP) tapes and composites, with reference to the composite processing conditions, testing temperature and making a comparison with commercial alternatives. All-PP tapes are highly oriented and their failure behaviour follows that of other highly oriented polymers. All-PP woven composites fail ultimately due to PP tape failure. However, this failure mode is accompanied by delamination of fabrics in the woven structure. Consolidation pressure plays a decisive role in controlling the interlaminar properties and hence the delamination resistance and furthermore the fatigue limit of the composite. Comparison of all-PP woven composites with commercial alternatives based on glass and natural fibres reveals the excellent relative performance of all-PP composites under fatigue loads. Fatigue properties of all-PP composites are however sensitive to the testing temperature, and elevated temperatures can lead to a rapid reduction of the fatigue resistance of these all-polymer systems.
ISSN:0967-3911
1478-2391
DOI:10.1177/096739110801600203