Language selection

Government of Canada / Gouvernement du Canada

Search

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

From National Research Council Canada

Download
  1. (PDF, 8.0 MiB)
AuthorSearch for: 1; Search for: 1; Search for: ; Search for:
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectCellular plastics (plastic foam); Foam
Abstract
A 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
In
  • Journal of Thermal Insulation 14, no. Jan (January 1991): 241–267.
NoteAlso presented at the Polyurethane '90 : Proceedings of the SPI 33rd Annual Technical/Marketing Conference, September 30, 1990 in Orlando, Fl, USA
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-3104
NRC numberNRCC 35471
NRC-IRC-3260
NPARC number20386730
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier2418df3d-861b-47d9-b2a7-89ff224fca0a
Record created2012-07-25
Record modified2020-06-06
Date modified: