NDLI: The effects of surface ion concentration on interfacial polarization in EPR/clay composites

Content Provider	IEEE Xplore Digital Library
Author	Jeffrey, A.-M. Weijun Yin Tanaka, J. Damon, D.H.
Copyright Year	1998
Description	Author affiliation: Inst. of Mater. Sci., Connecticut Univ., Storrs, CT, USA (Jeffrey, A.-M.)
Abstract	Recent work at the Electrical Insulation Research Center has been concerned with polarization, dielectric relaxation and space charge accumulation in both polyethylene and filled ethylene-propylene copolymers. Measurements of both thermally stimulated currents (TSDC) and the dielectric constants, /spl epsiv/' and /spl epsiv/", by time domain dielectric spectroscopy (TDDS) have been carried out in these investigations. The TSDC measurements made on polyethylene samples showed that significant space charge could be injected from the electrodes into the polymer at poling fields of 5000 kV/m. In contrast, for poling fields below 2/spl times/10/sup 4/ kV/mm the quantity of injected space charge was extremely small in the filled ethylene propylene diene monomer (EPDM) samples. Most of the polarization observed in the EPDM samples was shown to be due to interfacial polarization in samples containing more than 20 phr kaolin clay. This communication reports the results of some measurements on EPDM samples containing kaolin particles whose surfaces have been treated to change the ion concentrations on the surfaces of the kaolin particle.
Starting Page	189
Ending Page	192
File Size	341140
Page Count	4
File Format	PDF
ISBN	0780342372
DOI	10.1109/ICSD.1998.709257
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-06-22
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarization Space charge Polyethylene Current measurement Dielectric measurements Surface treatment Dielectrics and electrical insulation Time measurement Dielectric constant Electrochemical impedance spectroscopy
Content Type	Text
Resource Type	Article

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