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Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 149672, 6 pages
http://dx.doi.org/10.1155/2013/149672
Research Article

Materials Selection, Synthesis, and Dielectrical Properties of PVC Nanocomposites

1Electrical Engineering Department, King Abdulaziz University, Rabigh 21911, Saudi Arabia
2Electrical Engineering Department, Faculty of Energy Engineering, Aswan University, Sahari City 81528, Egypt
3Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh 21911, Saudi Arabia
4Chemical Engineering Department, Higher Technological Institute, Tenth of Ramadan City 11111, Egypt
5Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Received 12 March 2013; Revised 20 May 2013; Accepted 21 May 2013

Academic Editor: Mohd Sapuan Salit

Copyright © 2013 Youssef Mobarak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Materials selection process for electrical insulation application was carried out using Cambridge Engineering Selector (CES) program. Melt mixing technique was applied to prepare polyvinyl-chloride- (PVC-) nanofumed silica and nanomontmorillonite clay composites. Surface analysis and particles dispersibility were examined using scanning electron microscope. Dielectrical properties were assessed using Hipot tester. An experimental work for dielectric loss of the nanocomposite materials has been investigated in a frequency range of 10 Hz–50 kHz. The initial results using CES program showed that microparticles of silica and clay can improve electrical insulation properties and modulus of elasticity of PVC. Nano-montmorillonite clay composites were synthesized and characterized. Experimental analyses displayed that trapping properties of matrix are highly modified by the presence of nanofillers. The nanofumed silica and nanoclay particles were dispersed homogenously in PVC up to 10% wt/wt. Dielectric loss tangent constant of PVC-nanoclay composites was decreased successfully from 0.57 to 0.5 at 100 Hz using fillers loading from 1% to 10% wt/wt, respectively. Nano-fumed silica showed a significant influence on the electrical resistivity of PVC by enhancing it up to 1 × 1011 Ohm·m.