The Measurement of Thermal Conductivity of Plastics at Cryogenic Temperatures — A Discussion of Contact Resistance and One’s Naiveté

  • John Sondericker
  • William DeVito
  • Dieter Zantopp
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

A computer-controlled method that minimizes thermometric and radiation errors for the measurement of thermal conductivity of materials is presented. Initial runs with G-11 to “qualify” the apparatus brought us face to face with our naiveté when large contact resistance errors were observed. Various methods that failed to maintain good thermal contact from room to liquid-helium temperature are examined, and the solution to the problem is discussed. Thermal conductivity curves for G-10/11CR (NIST), Amodel 33% glass, Noryl SEIGFN3, and 3 types of Ultem are presented. The thermal properties of Vectra, a liquid-crystal polymer, are also mentioned because its properties are unique.

Keywords

Contact Resistance Support Plate Good Thermal Contact Cryogenic Engineer Mold Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. Waynert, Measurement of thermal conductivity of insulating cryogenic structural materials, in “Advances in Cryogenic Engineering—Materials,” vol. 32, Plenum Press, New York, p. 235 (1986).CrossRefGoogle Scholar
  2. 2.
    M.B. Kasen, G.R. MacDonald, D.H. Beekman, Jr., and R.E. Schramm, Mechanical, electrical, and thermal characterization of G-10CR and G-11CR glass-cloth/epoxy laminates between room temperature and 4 K, in “Advances in Cryogenic Engineering,” vol. 26, Plenum Press, New York, p. 235 (1981).Google Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • John Sondericker
    • 1
  • William DeVito
    • 1
  • Dieter Zantopp
    • 1
  1. 1.Brookhaven National LaboratoryAssociated Universities, Inc.UptonUSA

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