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Influence of resin chemistry on water uptake and environmental ageing in glass fibre reinforced composites-polyester and vinyl ester laminates
Authors:Eric Boinard   Richard A. Pethrick   Jody Dalzel-Job  Colin J. Macfarlane
Affiliation:(1) Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, Scotland, UK;(2) Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, Scotland, UK;(3) Structural Materials Centre, Defence Evaluation and Research Agency, Rosyth Royal Dockyard, Dunfermline, Fife, KY11 2XR, UK;(4) Department of Ship and Marine Technology, University of Strathclyde, Henry Dyer Building, 100 Montrose Street, Glasgow, G4 0LZ, Scotland, UK
Abstract:Hand laid up glass fibre reinforced isophthalic polyester resin and transfer moulded vinyl ester resin composites were subjected to environmental ageing. Gravimetric measurements were performed on laminate samples exposed to air and distilled water at 30°C and 60°C. Complementary porosimetry measurements on the original and fully aged samples indicated significant changes in the structure arising on ageing. Blistering showed that hydrolysis and de-bonding at the fibre-matrix interface occurred in polyester laminate to a greater extent at 60°C than 30°C. Leaching of monomer residues led to an anti-plasticisation effect in vinyl ester laminate. The influence of the fabrication method on the ageing behaviour is observed through porosity measurements on aged samples.
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