Influence of moisture absorption on properties of fiber reinforced polyamide 6 composites

Durai Prabhakaran Raghavalu Thirumalai, Tom Løgstrup Andersen, Aage Lystrup

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    Abstract

    A state-of-the art study of thermoplastic polymer matrix materials for fiber composites has identified polyamide 6 (PA6) as a potential candidate thermoplastic polymer relevant for manufacturing large composite structures like wind turbine blades. The mechanical properties of PA6 are highly sensitive to moisture, and if PA6 is used as matrix material in a fiber composite, the properties of the fiber composite will depend on the moisture content of the material. At standard condition (23 °C and 50% RH) polyamide6 absorbs about 3 weight-% of water, whereas the PA6 material is dry right after manufacturing of components. In the current article, lamina properties of dry glass fiber/PA6 and conditioned (23 °C, 50% RH) glass fiber/PA6 are calculated for lamina with two different fiber content (45 and 50 vol.-%) by the use of classical micro mechanics. The matrix dominated properties like the shear stiffness, the shear strength and the stiffness and strength across the fiber direction are the ones which are mostly affected by the moisture content in the material.
    Original languageEnglish
    Title of host publicationProceedings of the 26th Annual Technical Conference of the American Society for Composites 2011 and the 2nd Joint US-Canada Conference on Composites
    Volume1
    PublisherDEStech Publications, Inc.
    Publication date2011
    Pages500-510
    ISBN (Print)9781618391964
    Publication statusPublished - 2011
    Event26th Annual Technical Conference of the American Society for Composites 2011 and the 2nd Joint US-Canada Conference on Composites - Quebec, Canada
    Duration: 26 Sep 201128 Sep 2011

    Conference

    Conference26th Annual Technical Conference of the American Society for Composites 2011 and the 2nd Joint US-Canada Conference on Composites
    CountryCanada
    CityQuebec
    Period26/09/201128/09/2011

    Keywords

    • Light strong materials for energy purposes

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