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Effect of Silane coupling agent on mechanical performance of glass fibre

Yang, Liu and Thomason, James (2013) Effect of Silane coupling agent on mechanical performance of glass fibre. Journal of Materials Science, 48 (5). pp. 1947-1954. ISSN 0022-2461

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    Abstract

    Mechanical performance of commercially manufactured unsized and γ-APS sized boron-free E-glass fibres has been characterised using single fibre tensile test. Both apparent fibre modulus and fibre strength were found to strongly depend on fibre gauge length. The average strength of sized fibres was found 40%-80% higher than unsized fibres at different gauge lengths. Weibull analysis suggested that the failure mode of unsized fibres could be described by unimodal Weibull distribution, whereas the strength distribution of sized fibres appeared to be controlled by two exclusive types of flaw population, type A and B. Comparison of the Weibull plots between unsized and sized fibres revealed that the strength of unsized fibres was likely to be dominated by type A flaws existing on the bare glass surface and type B flaws may be related to the defects on the glass surface coated with silane. This was partially supported by the observation of fractured cross-sectional area using SEM. It was, therefore, proposed that the strength difference between unsized and sized glass fibres may be more reasonably interpreted from the surface protection standpoint as opposed to the flaw healing effect. The results obtained from this work showed that silane coupling agent plays a critical role in the strength retention of commercially manufactured E-glass fibres and the silane effect on the fibre strength is also affected by the change in gauge length of the sample.

    Item type: Article
    ID code: 41938
    Keywords: glass fibre, silane coupling agent, mechanical characterisation, strength, Mechanical engineering and machinery, Mechanical Engineering, Mechanics of Materials, Computational Mechanics, Ceramics and Composites
    Subjects: Technology > Mechanical engineering and machinery
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 06 Nov 2012 12:00
    Last modified: 27 Mar 2014 21:14
    URI: http://strathprints.strath.ac.uk/id/eprint/41938

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