Influence of fiber type, fiber mat orientation, and process time on the properties of a wood fiber/polymer composite

David Plackett, R. Torgilsson, T. Løgstrup Andersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A rapid press consolidation technique was used to produce composites from two types of air-laid wood fiber mat, incorporating either mechanically refined or bleached chemi-thermomechanically refined Norway Spruce [Picea abies (L.) Karst] and a bicomponent polymer fiber. The manufacturing technique involved pre-compression, contact heating to the process temperature under vacuum and then rapid transfer to the press for consolidation and cooling. Composites were tested to determine response to water or water vapor, porosity, fiber volume fraction and tensile properties. The composites absorbed water rapidly and showed changes in thickness with fluctuations in relative humidity. Porosity was higher in composites containing mechanically refined (MDF) fibers than in composites containing bleached chemi-thermomechanically refined (CTMP) fibers. Tensile test results suggessted that fiber wetting by the polymer matrix had been maximized within a five-minute heating time. Results also indicated that had been maximized within a five-minute heating time. Results also indicated that porosity was not the key determinant of tensile properties in the composites.
    Original languageEnglish
    JournalInternational Journal of Polymeric Materials
    Volume51
    Issue number11
    Pages (from-to)1005-1018
    ISSN0091-4037
    DOIs
    Publication statusPublished - 2002

    Keywords

    • Polymer Process
    • Norway Spruce
    • Bicomponent Polymer Fibers
    • Mat Forming
    • Composites

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