Preliminary characterization of glass fiber sizing

Helga Nørgaard Petersen, Yukihiro Kusano, Povl Brøndsted, Kristoffer Almdal

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    Abstract

    Glass fiber surfaces are treated with sizing during manufacturing. Sizing consists of several components, including a film former and a silane coupling agent that is important for adhesion between glass fibers and a matrix. Although the sizing highly affects the composite interface and thus the strength of the composites, little is known about the structure and chemistry of the sizing. A part of sizing was extracted by soxhlet extraction. The fibers were subsequently burned and some fibers were merely burned for analysis of glass fiber and sizing. The results showed that the analyzed fibers had amounts of bonded and physisorbed sizing similar to what has been presented in literature. An estimated sizing thickness was found to be approximately 100 nm. It is indicated that an epoxy-resin containing film former and a polyethylene oxide lubricant are present, yet no silanes or other sizing components were identified in the extractant.
    Original languageEnglish
    JournalProceedings of the Risø International Symposium on Materials Science
    Volume34
    Pages (from-to)333-340
    ISSN0907-0079
    Publication statusPublished - 2013
    Event 34th Risø International Symposium on Materials Science: Processing of fibre composites – challenges for maximum materials performance - Technical University of Denmark, Risø Campus, Roskilde, Denmark
    Duration: 2 Sept 20135 Sept 2013

    Conference

    Conference 34th Risø International Symposium on Materials Science
    LocationTechnical University of Denmark, Risø Campus
    Country/TerritoryDenmark
    CityRoskilde
    Period02/09/201305/09/2013

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