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Swelling of glass-fibre reinforced Polyamide 66 during conditioning in water, ethylene glycol and antifreeze mixture

Thomason, James and Porteus, G. (2011) Swelling of glass-fibre reinforced Polyamide 66 during conditioning in water, ethylene glycol and antifreeze mixture. Polymer Composites, 32 (4). pp. 639-647. ISSN 0272-8397

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    Abstract

    The weight and dimensional changes of injection molded glass-fiber reinforced polyamide 66 composites based on two glass fiber products with different sizing formulations and unreinforced polymer samples have been characterized during conditioning in water, ethylene glycol, and a water-glycol mixture at 508C and 708C for a range of times up to 900 h. The results reveal that hydrothermal ageing in these fluids causes significant changes in the weight and dimensions of these materials. All conditioned materials showed a time dependent weight and dimension increase. The change observed in water could be well modeled by a simple Fickian diffusion process; however, the absorption process followed a more complex pattern in the other conditioning fluids. It was not apparent that changing the glass fiber sizing affected the dimensional stability of the composites under these relatively mild conditions. There was a strong correlation between the swelling of these samples and the level of fluid absorption. The composites exhibited highly aniosotropic levels of swelling. These effects were well in line with the influence of fibers on restriction of the matrix deformation in the fiber direction. The polymer and composite swelling coefficients correlated well with data previously obtained at higher conditioning temperatures.

    Item type: Article
    ID code: 29295
    Notes: Impact Factor 1.194, Half-Life 8.6
    Keywords: polymer, polyamide 66, glass fibre, chemistry, Mechanical engineering and machinery, Chemistry, Mechanical Engineering, Mechanics of Materials, Biomaterials, Ceramics and Composites, Analytical Chemistry
    Subjects: Technology > Mechanical engineering and machinery
    Science > Chemistry
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
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    Depositing user: Pure Administrator
    Date Deposited: 07 Mar 2011 23:29
    Last modified: 27 Mar 2014 09:16
    URI: http://strathprints.strath.ac.uk/id/eprint/29295

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