Abstract

Thermal conductivity, K, of rod-shaped specimens of nylon and of graphite has been measured by a steady state method and fitted to the formula, K=ATn. The constants A and n of nylon depend on how it was produced, polymerized and moulded, as well as on the types of the monomer. The inhomogeneous structure in moulded nylon and in pitch-bonded graphite is the origin of their poor thermal conductivity. The cryostat in which the specimen is cooled by an adiabatically demagnetized salt pill is described as well as the experimental procedures.

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