Problems in predicting the thermal properties of faced polyurethane foams

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Proceedings titleASTM Special Technical Publication
ConferenceSymposium on Thermal Insulation Performance: 22 October 1978, Tampa, FL. USA
Pages41228; # of pages: 385
Subjectpolyurethane; thermal properties; aging tests; experimental methods; thermal resistance; thermal conductivity; faced polyurethanes; urethanes; aging; design; thermal properties; thermal insulation; Cellular plastics (plastic foam); Foam; polyurethanne (thermodurcissable); propriete thermique; essai de vieillissement; technique experimentale
AbstractThe thermal properties of polyurethane foams vary during service life depending on environmental conditions, the manner in which they are enclosed in the building partition, or if covered with facing membranes during their production. The effect of facing materials on thermal performance of the composites range from a slight improvement of dimensional stability to a substantial reduction in the rate of loss of thermal resistance. Faced polyurethanes should be tested as composite materials, using a method that simulates performance conditions as closely as possible. Such a test method should include determination of cell gas composition as a measure of the aging process. Determination of cell gas composition after a period of exposure to different service conditions would allow an approximate correlation of laboratory results with in situ performance. The paper gives background information on effects of environmental factors and aging simulations on thermal resistance of polyurethanes and provides a starting point for discussion of the testing method.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number19327
NPARC number20375882
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Record identifier5a8e891a-2437-4505-8178-17b17030d5bc
Record created2012-07-23
Record modified2016-05-09
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