Mechanical properties of sealants : Pt. III, Performance testing of silicone sealants

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AuthorSearch for:
TypeArticle
Journal titleJournal of Paint Technology
ISSN0094-8691
Volume44
Issue571
Pages7585; # of pages: 11
Subjectsilicons (plastics); sealants; mechanical properties; breaking tests; sealants; building sealants; silicone sealants; mechanical properties of sealants; rate of movement dependence of mechanical properties of sealants; temperature dependence of mechanical properties of sealants; performance testing of sealants; Buildings; siloxane (elastomere); mastic; propriete mecanique; essai de rupture
AbstractThe mechanical behavior of a one-part, chemically-curing, silicone sealant is defined by its primary variables: stress; strain; time; and temperature; using a model specimen. The material proved to be temperature independent in the region important for sealants, with some deviation from the rule near the crystallization temperature under high strain. The remaining three variables describe behavior in a three-dimensional co-ordinate system. Projection of the break points in the logarithm of strain vs logarithm of time plane is the link between laboratory testing and outdoor performance. By extrapolating the regression line of the break points to six months, extensibility of the material can be predicted. A testing procedure suitable for standards is proposed that links laboratory testing with outdoor performance.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-533
NRC number12810
2661
NPARC number20374207
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Record identifier32dad472-48c4-4f83-b680-9398f655526d
Record created2012-07-23
Record modified2016-05-09
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