International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2568

Full Length Research Paper

Probing of dielectric properties of high density poly-ethylene/calcium carbonate (HDPE/CaCO3) nano-micro composite

M. A. Al-Eshaikh and M. Iqbal Qureshi*
Research Center, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia.
Email: [email protected]

  •  Accepted: 22 January 2013
  •  Published: 30 January 2013

Abstract

In this experimental investigation, high density poly-ethylene/calcium carbonate (HDPE-CaCO3) micro/nano composite sheets were prepared by melt blending the master batch using twin screw extruder followed by injection molding. The dispersion characteristics were determined by field emission scanning electron microscope (FESEM) and were found to be reasonably uniform. These sheets were then subjected to electrical stresses in order to evaluate their dielectric performance. The dissipation factor (tand) and relative permittivity (er) were evaluated as a function of temperature in a practical range of 23 to 80°C. The composite exhibited decreased er and tand values compared with unfilled HDPE. These results support the multi-layer model proposed in literature for nano-composite. It is also clarified that this nano-micro composite is higher in both ac breakdown strength and partial discharge resistance than for the base polymer.

 

Key words: High density poly-ethylene/calcium carbonate (HDPE/CaCO3) nano-micro composite, partial discharge, surface degradation, dielectric properties.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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