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Polyol and blowing agent binary system described by means of Flory model.
Author(s) : BASILE G., TESSER R., DI SERIO M., MUSSO E., SANTACESARIA E.
Summary
The experimental procedures described in the paper allow to draw useful information, to set up and to control physicochemical processes involving foam systems. They provide an important support for modelling polyurethane foams expanded with physical blowing agents. The mentioned processes are based upon the blowing effect of CFCs, or their substitutes, dissolved in medium-low molecular weight solvents such as polyols (basis of the polyurethane structure). The Flory-Huggins model describes the above systems successfully and can be integrated in the more complex calculation schemes, such as those available for the foam formation, providing them with a severe theoretic basis. A software containing this particular mathematic model has been run on a personal computer and some interesting results have been obtained as regards the kinetics and the foam density.
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Pages: p 821-831
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Details
- Original title: Polyol and blowing agent binary system described by means of Flory model.
- Record ID : 1995-2193
- Languages: English
- Source: CFCs, the Day After.
- Publication date: 1994/09/21
- Document available for consultation in the library of the IIR headquarters only.
Links
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Indexing
- Themes: Insulants
- Keywords: Solubility; Manufacture; Simulation; Polymer; Foam; Insulation
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- Date : 1993/10/20
- Languages : English
- Source: The 1993 International CFC and Halon Alternatives Conference. Stratospheric Ozone Protection for the 90's. Proceedings.
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- Author(s) : VOS R. de, ROSBOTHAM I. D.
- Date : 1993/10/20
- Languages : English
- Source: The 1993 International CFC and Halon Alternatives Conference. Stratospheric Ozone Protection for the 90's. Proceedings.
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- Author(s) : ABBOTT J. G., MINSKER J. H.
- Date : 1993/09/27
- Languages : English
- Source: Proceedings of the 1993 non-fluorocarbon insulation, refrigeration and air-conditioning technology workshop.
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- Author(s) : HERRMANN G. H., MIEHLER H., ZIPP K., HAHN K., HOHWILLER F.
- Date : 1997/11/12
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- Source: International Conference on Ozone Protection Technologies. Conference proceedings.
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On the micromechanics of polymer foam used as t...
- Author(s) : SHULMEISTER V., NIJHOF A. H. J., LOUSBERG N. J., MARISSEN R.
- Date : 1995/08/20
- Languages : English
- Source: For a Better Quality of Life. 19th International Congress of Refrigeration.
- Formats : PDF
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