Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11278
Title: Effect of processing on the positive temperature coefficient of resistivity in lead metaplumbate/polyethylene composites
Authors: Huang, ZZ
Yue, R
Chan, HLW 
Choy, CL 
Issue Date: 1998
Source: Polymer composites, 1998, v. 19, no. 6, p. 781-786 How to cite?
Journal: Polymer Composites 
Abstract: The positive temperature coefficient of resistivity (PTCR) effect of a barium metaplumbate/polyethylene [(BaPbO3/PE] composite with 12 vol% of BaPbO3 was studied. The composite samples were prepared by hot-pressing a mixture of BaPbO3 ceramic and high-density polyethylene powders around the melting point of polyethylene. The composites exhibit a pronounced PTCR effect of up to a six-decade increase in resistivity within a narrow range of temperature (∼10°C). The dependences of the room temperature resistivity and the magnitude of the resistivity jump on the pressing and annealing temperature, and the electrical behavior after repeated heating-cooling cycles were investigated. The fracture surfaces of the composite samples were examined in a scanning electron microscope in order to correlate the electrical behavior with the microstructure.
URI: http://hdl.handle.net/10397/11278
ISSN: 0272-8397
DOI: 10.1002/pc.10152
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