Brittle to ductile transition during indentation of ice

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TypeArticle
Journal titleCanadian Journal of Civil Engineering
Volume18
Issue2
Pages182190; # of pages: 9
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
Peer reviewedYes
IdentifierIRC-P-1706
NRC number33092
1894
NPARC number20377932
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Record identifiercc8a91da-b69b-492e-8c45-50d14969e25a
Record created2012-07-24
Record modified2016-05-09
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