A Method for evaluating the effect of blowing agent condensation on sprayed polyurethane foams

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Author	Search for: Kumaran, M. K.¹; Search for: Bomberg, M. T.¹; Search for: Marchand, R. G.¹; Search for: Creazzo, J. A.; Search for: Ascough, M. R.
Affiliation	National Research Council of Canada. NRC Institute for Research in Construction
Format	Text, Article
Subject	cfc; chloroflorocarbons; Cellular plastics (plastic foam); Foam
Abstract	An experimental procedure for the determination of temperature dependence of thermal conductivity of foam insulations blown with condensable gases is presented. The procedure is used to investigate the effect of the blowing agent on thermal conductivty of a polyurethane system blown with CFC-11 or HCFC-123, at various stages of its aging. A method to calculate the partial pressure of the blowing agent in the cell gas mixture of the test specimens, from the data on thermal conductivity, is also presented.
Publication date	1989
Language	English
Peer reviewed	Yes
Identifier	IRC-P-1637
NRC number	NRCC 31112 NRC-IRC-3559
NPARC number	20375975
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Record identifier	4dd2c524-cca1-4e5d-8664-207d19106d4d
Record created	2012-07-23
Record modified	2020-06-06