Effect of time and temperature on R-value of rigid polyurethane foam insulation manufactured with alternative blowing agents

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TypeArticle
Journal titleJournal of Thermal Insulation
ISSN0148-8287
Volume14
IssueJan
Pages241267; # of pages: 27
SubjectCellular plastics (plastic foam); Foam
AbstractA non-destructive technique, involving specimen encapsulation and determination of the dependence of thermal resistance on temperature, to measure the blowing agent pressure in cellular plastic insulation was recently presented. This technique was applied to polyurethane foam manufactured with different blowing agents and the results were compared with those obtained from model calculations. The results indicate that the long-term solubility of the gas in the polymer matrix may differ from that determined from short-term experiments. The paper presents results for HCFC-123 and HCFC-141b as well as CFC-11 and discusses their implication for long-term thermal resistance of polyurethane foams.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NoteAlso presented at the Polyurethane '90 : Proceedings of the SPI 33rd Annual Technical/Marketing Conference, September 30, 1990 in Orlando, Fl, USA
Peer reviewedYes
IdentifierIRC-P-3104
NRC number35471
3260
NPARC number20386730
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Record identifier2418df3d-861b-47d9-b2a7-89ff224fca0a
Record created2012-07-25
Record modified2016-05-09
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