NDLI: Prominent nonlinear electrical conduction characteristic in T-ZnOw/PTFE composites with low threshold field

Content Provider	IEEE Xplore Digital Library
Author	Jun-Wei Zha Zhi-Min Dang Kai Zhao Xiao-Quan Zheng Sheng-Tao Li
Copyright Year	1994
Abstract	Tetra-needle-shaped zinc oxide whisker/polytetrafluoroethylene (T-ZnOw/PTFE) composites with low threshold field were prepared via compression molding and sintering process. The addition of T-ZnOw endowed the T-ZnOw/PTFE composites a remarkable nonlinear conductivity characteristic under applied electric field. Dependence of threshold field on the concentration of T-ZnOw was observed. With increased T-ZnOw fillers loading, the threshold field of composites decreased while the conduction current density increased, which showed a nonlinear electrical conduction characteristic. The dielectric constant increases with the increasing of T-ZnOw loading. While the volume resistivity and breakdown strength of the composites decreased with increasing the loading of T-ZnOw. Compared with pure PTFE, T-ZnOw/PTFE composites with 30 wt% T-ZnOw loading also displayed a significant improved thermal conductivity and a low thermal expansion coefficient (TEC), which properties were important in practical application.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
File Size	1980663
File Format	PDF
ISSN	10709878
Volume Number	19
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Conductivity Thermal conductivity Loading Electric breakdown Electric fields Needles Resistance PTFE Nonlinear electrical conduction threshold field thermal properties T-ZnOw
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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