Flexibility and its retention in clear coatings exposed to weathering

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AuthorSearch for:
TypeArticle
Journal titleJournal of Coatings Technology
ISSN0361-8773
Volume51
Issue653
Pages4152; # of pages: 12
Subjectweathering; clear finish; alkyd; phenolic varnish; tensile strength; adaptability; Buildings; action des intemperies; aspect transparent; alkyde ( resine); vernis phenolique; resistance a la traction; adaptabilite
AbstractThe influence of mechanical properties on the behavior of coatings in service is generally understood. However, the level of these properties, particularly flexibility, attributed to some binders has not reflected actual measurements. Tensile strength and elongation of clear alkyds and phenolic varnishes have been determined using free films exposed to natural or accelerated weathering. It is shown that alkyds of intermediate oil content have higher extensibility and retain it better than those with low or high oil content, while phenolics do not remain flexible for very long in either exposure. The relation of tensile properties to exterior performance on wood is discussed.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-856
NRC number17646
271
NPARC number20374633
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Record identifiere7425dc4-1d3c-4620-90f9-4dd37b9ee796
Record created2012-07-23
Record modified2016-05-09
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