Hygrothermal Effects on Painted and Unpainted Glass/Epoxy Composites—Part A:Moisture Absorption Characteristics

Pavan, RMV and Saravanan, V and Dinesh, AR and Rao, YJ and Srihari, Shylaja and Revathi, A (2001) Hygrothermal Effects on Painted and Unpainted Glass/Epoxy Composites—Part A:Moisture Absorption Characteristics. Journal of Reinforced Plastics and Composites, 20 (12). pp. 1036-1046. ISSN 0731-6844

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Abstract

Moisture diffusion behaviour of glass/epoxy composites coated with a polyurethane base paint and those without the paint were studied on immersion in water at 323 K. Neat resin castings of the epoxy resin system were also studied for comparison. The composite specimens with paint showed lower moisture absorption values than those of the unpainted specimens subjected to the same immersion conditions. The diffusion parameters obtained from the experiment conducted up to saturation limits agreed well with the data computed using moisture absorption programme (M8 gain) proposed by G. S. Springer. The mixture rule for moisture absorptionwas also verified for the weight fraction studied. Further, Fickian correlation was found to exist in all the cases.

Item Type: Article
Uncontrolled Keywords: glass/epoxy composites, maximum moisture content, Fickian diffusion,diffusion coefficient.
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Users 10 not found.
Date Deposited: 21 Jul 2011 05:24
Last Modified: 21 Jul 2011 05:24
URI: http://nal-ir.nal.res.in/id/eprint/9510

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