DIELECTRIC PROPERTIES AND THERMAL CONDUCTIVITY OF HDPE AND PS

Hameed Ahmed; Shakhawan Ali

doi:10.24996/

Authors

Hameed Ahmed Department of physics, College of Science-Sulaimani University. Sulaimani – Iraq.
Shakhawan Ali Department of physics, College of Science-Sulaimani University. Sulaimani – Iraq.

DOI:

https://doi.org/10.24996/

Keywords:

Dielectric constant,, thermal conductivity, , non-polar polymer.

Abstract

Dielectric constant (ε ′ ) over the frequency range 1KHz-1MHz and thermal
conductivity (k) have been measured for high-density polyethylene (HDPE) and
polystyrene (PS) (with thicknesses 1.6 and 1.1 mm respectively and all with
diameter 3.2 cm), in the temperature range 30-110°С, It has been found that the
dielectric constant is almost frequency independent and slightly temperature
dependent, this reveals the fact that these polymers are non-polar. However, there
was a significant effect of temperature on the thermal conductivity of the samples,
especially at Tg of PS and Tm of HDPE.