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Blowing agents for polyurethane insulating materials: state of the art.

[In Italian. / En italien.]

Author(s) : SIMIONI F., MODESTI M., TONIN L.

Type of article: Article

Summary

The paper surveys the R11-substitution possibilities offered by CO2, hydrocarbons, HCFCs, HFCs, and chloropropane. As none of them is able to equal the good performance of R11, the author suggests using different fluids as blowing agents and insulating gases. A gas with high molecular mass is indeed the optimum choice, from the point of view of thermal conductivity, but it may not be suitable for blowing the foam, as its saturation pressure is too low and a large mass is required. In the author's opinion, such a fluid can be found among the blends of perfluoroalkanes. E.F.

Details

  • Original title: [In Italian. / En italien.]
  • Record ID : 1993-2579
  • Languages: Italian
  • Source: Industria italiana del Freddo - vol. 46 - n. 5
  • Publication date: 1992/09
  • Document available for consultation in the library of the IIR headquarters only.

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