Study on Electrical Properties of Activated Carbon Black Filled Polypropylene Composites Using Impedance Analyzer

Abstract:

Carbon black was activated and then filled into polypropylene to prepare conductive composites, of which the electrical properties, including impedance Z, phase angelθ and dissipation factor tgδ, as a function of frequency and carbon black concentration were investigated using impedance analyzer. The percolation threshold of 5wt% carbon black concentration was obtained. It was found that the variation of AC electrical properties as a function of frequency is dramatic and dependent on the carbon black concentration. It was also found that dependence of the real part and the imaginary part of impedance on frequency decreases with the increased concentration of carbon black, while that of phase angle and dissipation factor increases. Based on the corresponding results, the conductive network model and the corresponding equivalent circuit were constructed.

• Periodical: Advanced Materials Research (Volumes 712-715)
• Pages: 175-181
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.712-715.175
• Online since: June 2013
• Authors: Nai Xiu Ding, Li Li Wang, Pei Yan Zuo, Yong Li, Guang Ye Liu
• Keywords: Carbon Black (CB), Conductive Composites, Electrical Properties, Impedance Analyzer, Polypropylene (PP)

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