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Flexibility and its retention in clear coatings exposed to weathering

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectBuildings; weathering; clear finish; alkyd; phenolic varnish; tensile strength; adaptability
Abstract
The 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.
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  • Journal of Coatings Technology 51, no. 653 (June 1979): 41–52.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-856
NRC numberNRCC 17646
NRC-IRC-271
NPARC number20374633
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Record identifiere7425dc4-1d3c-4620-90f9-4dd37b9ee796
Record created2012-07-23
Record modified2024-03-15
Date modified: