Measurement of gaseous diffusion within Zero ODP cellular plastic insulation

Fan Youchen, Erkki Kokko

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Diffusion coefficients (D) of blowing agents and air in cellular plastic insulation are the key parameters in determining the thermal quality and dimensional stability of the foams. Measurement methods available for this purpose are briefly discussed. An apparatus based on the so called diffusion chamber method has been designed in this study. Strategies for preparing samples and for calculating the D-values are suggested in order to save measurement time. Diffusion of carbon-dioxide (CO2), oxygen (02) and nitrogen (N2) within five types of zero ozone depletion potential (ODP) foams will be shown. Results also show the dependence of D-values on temperature and foam densities. The D-temperature curve follows the Arrhenius type relationship. Different density foams at same temperature show different Ds, but no identical relationship is reached. Foams produced by different companies have dramatic differences in gaseous diffusion property.

Original languageEnglish
Pages (from-to)72 - 90
Number of pages19
JournalJournal of Cellular Plastics
Volume33
Issue number1
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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Foamed plastics
Ozone
Foams
Insulation
Blowing agents
Dimensional stability
Time measurement
Carbon Dioxide
Temperature
Carbon dioxide
Nitrogen
Oxygen
Air
Industry

Cite this

Youchen, Fan ; Kokko, Erkki. / Measurement of gaseous diffusion within Zero ODP cellular plastic insulation. In: Journal of Cellular Plastics. 1997 ; Vol. 33, No. 1. pp. 72 - 90.
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Measurement of gaseous diffusion within Zero ODP cellular plastic insulation. / Youchen, Fan; Kokko, Erkki.

In: Journal of Cellular Plastics, Vol. 33, No. 1, 1997, p. 72 - 90.

Research output: Contribution to journalArticleScientificpeer-review

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