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Low temperature thermal conductivity of polyamide-imide

โœ Scribed by G. Ventura; E. Gottardi; I. Peroni; A. Peruzzi; G. Ponti

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
129 KB
Volume
78
Category
Article
ISSN
0920-5632

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โœฆ Synopsis

Thermal conductivity of polyamide-imide Torlon 4203 was measured at temperatures between 0.1K and IK. The measurements were carried out in a dilution refrigerator using a steady state technique.

The fit on the data gave a temperature dependence of the conductivity: k = c~ โ€ข T ~, with n = 2.23 :t: 0.01 and o = (7.72 + 0.08) -lO-SW/cmt( n+l.

A quadratic dependence on T of the conductivity can be explained, within the framework of the tunneling model, as being due to the resonant scattering of phonons by two level systems.

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