Dielectric Properties of Commercial non-Polar Polymers

Volume 11 , Issue 1 , December 2008 , Pages 1-8

Authors

¹ College of Science, University of Sulaimani

Frequency and temperature dependence of dielectric constant (3') and dielectric loss (3''), in

commercial non-polar polymers which were high density polyethylene (HDPE) and polystyrene (PS), of

thicknesses 2.8 and 2.7mm respectively with diameter 5.6 cm, are studied in the temperature range (20-

110°С) and in the frequency range (1KHz-1MHz).It was observed that the dielectric constant of non-polar

polymers decrease with increasing temperature as well as with frequency. The dielectric constant of PS

increases with temperatures above 70°С, which is due to the glass transition temperature. It has been found

that the dielectric loss of HDPE and PS decrease with increasing frequency and some loss peaks are

observed. The dielectric loss of HDPE was found to be slightly temperature dependent, while the dielectric

loss of PS, were found to increase slightly with increasing temperature.

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