Mass Transport into a Three-Component Composite Subjected to a Temperature Gradient

  • A Cervenka
Part of the Cryogenic Materials Series book series (CRYMS)


If considered on the basis of cellular structure alone, rigid polyurethane foams (PUF) consisting entirely of closed cells are ideal materials for thermal insulation applications. However, the low load-bearing capacity of the material and the vulnerability of the cell membranes make it virtually impossible for the foam to be used on its own. Therefore, technical insulations are usually based on composites consisting of (a) a substrate, which by virtue of its superior engineering properties supports the insulant (PUF), (b) A liner, which reduces ingress of species which might damage the insulant if they were to come into contact with it, and (c) the insulant itself. Examples of such composites are the insulation panels used in the building industry.


Concentration Profile Critical Curve Rigid Polyurethane Foam Composite Slab Technical Insulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    S Sakai, Sci. Rep. Tohoku University, II (1922), p. 351.Google Scholar
  2. 2.
    Shuzo Ohe, Computer Aided Data Book of Vapour Pressure, Data Book Publishing Co, Tokyo, 1976, p. 1932.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • A Cervenka
    • 1
  1. 1.Koninklijke/Shell-Laboratorium(Shell Research B.V.)AmsterdamThe Netherlands

Personalised recommendations