Surface weatherability of glass-fiber-reinforced polyester sheeting. I. Effect of modification of resin chemical composition

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AuthorSearch for:
TypeArticle
Journal titleComposites Technology Review
ISSN0733-9011
Volume4
Issue3
Pages8487; # of pages: 4
Subjectglass fibres; durability; composite materials; surface properties (materials); weathering tests; accelerated tests; composite materials; surface properties; glass fibers; polyester laminates; resin chemical composition; accelerated weathering test; scanning electron microscopy (sem); durabilite; materiau composite; propriete de surface; essai climatique; essai accelere
AbstractAn accelerated weathering test (2 to 0.67 cycle) has been applied to glass-fiber-reinforced polyester (GRP) to determine the effect on surface durability of modifying the chemical composition of the resin matrix. The nature and rate of induced surface degradation were monitored by scanning electron microscopy. For GRP based on general purpose polyester resin (o-phthalic anhydride-propylene glycol-maleic anhydride-based) the nature of surface damage was not significantly influenced by chemical modification, although the time of initiation was altered. The average overall durability of GRP improved 60% by substitution of propylene glycol with neopentyl glycol, 30% by incorporation of a greater amount of maleic anhydride, and 20% by replacement of both anhydride and glycol with isophthalic acid and neopentyl glycol, respectively. By inference, replacement of anhydride with isophthalic acid reduced the durability of neopentyl glycol-based GRP by 40%.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1078
NRC number20929
569
NPARC number20375466
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Record identifierb112c635-b392-40a3-8870-77265c37a74e
Record created2012-07-23
Record modified2016-05-09
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