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THERMAL AND MECHANICAL PROPERTIES OF POLYURETHANE FOAMS AT CRYOGENIC TEMPERATURES.

Author(s) : SPARKS L. L., ARVIDSON J. M.

Type of article: Periodical article

Summary

THE PREVIOUS PUBLISHED INFORMATION ON POLYURETHANE FOAMS DOES NOT OFFER COMPREHENSIVE DATA FOR CRYOGENIC APPLICATIONS. THIS PAPERCONCERNS RESEARCH TO PROVIDE INFORMATION OVER THE RANGE 100 TO 300 K. IT DESCRIBES THE APPARATUS USED AND THE RESULTS OBTAINED FOR THREE PARTICULAR FOAM SPECIFICATIONS CLASSIFIED AS PU32, PU64, AND PU96, THE FIGURES DESIGNATED ARE THE DENSITIES. THE RESULTS HIGHLIGHT THE DIFFICULTY OF PREDICTION OF PROPERTIES FOR FOAMS AS THE CHARACTERISTICS AFFECTING PROPERTIES ARE COMPLEX AND NOT FULLY UNDERSTOOD. THE EXTRAPOLATION OF DATA IS ALSO PROBLEMATIC. FOR EXAMPLE, YOUNG'S MODULUS REACHES A PEAK IN THE FIRST TWO SPECIMENS, BUT NOT IN THE THIRD. THE PROPERTIES INVESTIGATED INCLUDE THERMAL CONDUCTIVITY, EXPANSION, STRESS AND STRAIN, IN LONGITUDINAL AND TRANSVERSE PLANES. D.W.H.

Details

  • Original title: THERMAL AND MECHANICAL PROPERTIES OF POLYURETHANE FOAMS AT CRYOGENIC TEMPERATURES.
  • Record ID : 1986-1407
  • Languages: English
  • Source: J. Res. NBS - 14 p.; 19 fig.; 8 tabl.; 33 ref.
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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