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Photoacoustic characterization of the effects of air inclusion on the thermal properties of foamed polyurethane

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Abstract

The usefulness of the open photoacoustic cell technique for investigating the effects of air inclusions on the thermal properties of foamed polyurethane is demonstrated. It is shown that the thermal diffusivity and thermal expansion coefficients increase with decreasing values of the resin to catalyst ratio, which corresponds to greater air inclusion in the resin.

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Author notes

  1. L. C. M. Miranda

    Present address: Instituto de Pesquisas Espaciais, S.J. Campos, S.P., Brazil

Authors and Affiliations

  1. Laboratório Associado de Sensores e Materiais, Instituto de Pesquisas Espaciais, Caixa Postal 515, 12201, São José dos Campos, S. P., Brazil

    N. F. Leite

  2. Instituto Politécnico do Rio de Janeiro, Caixa Postal 97282, 28600, Nova Friburgo, R. J., Brazil

    L. C. M. Miranda

Authors
  1. N. F. Leite
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  2. L. C. M. Miranda
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Leite, N.F., Miranda, L.C.M. Photoacoustic characterization of the effects of air inclusion on the thermal properties of foamed polyurethane. J Mater Sci 27, 5449–5452 (1992). https://doi.org/10.1007/BF00541605

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  • DOI: https://doi.org/10.1007/BF00541605

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