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Calculation model for predicting gas diffusion and aging of CFC-free rigid polyurethane foam.

[In German. / En allemand.]

Author(s) : WALTER R., WENDEL S.

Type of article: Article

Summary

Describes an investigation of the cell gas-diffusion process for rigid polyurethane foams using water/CO2 and pentane as blowing agents. Based on measurements of the cell gas composition by gas chromatography, the gas diffusion coefficients were determined and a calculation model established for the prediction of the long-term gas diffusion process. Presents the positive findings of the investigations for aging of 25 year old insulation slabs for the two blowing agents.

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1993-1334
  • Languages: German
  • Source: Bauphysik - vol. 14 - n. 1
  • Publication date: 1992/02
  • Document available for consultation in the library of the IIR headquarters only.

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