Electrical relaxations in polymeric particulate composites of epoxy resin and metal particles

Psarras, GC; Manolakaki, E; Tsangaris, GM

dc.contributor.author	Psarras, GC	en
dc.contributor.author	Manolakaki, E	en
dc.contributor.author	Tsangaris, GM	en
dc.date.accessioned	2014-03-01T01:17:47Z
dc.date.available	2014-03-01T01:17:47Z
dc.date.issued	2002	en
dc.identifier.issn	1359-835X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14668
dc.subject	B. Interface	en
dc.subject	Permittivity	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Dielectric relaxation	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Epoxy resins	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Permittivity	en
dc.subject.other	Thermal effects	en
dc.subject.other	Electrical relaxations	en
dc.subject.other	Composite materials	en
dc.title	Electrical relaxations in polymeric particulate composites of epoxy resin and metal particles	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1359-835X(01)00117-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1359-835X(01)00117-8	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Composites of epoxy resins and nickel particles in various amounts were prepared and their dielectric spectra were measured in the frequency range 5 Hz-13 MHz and temperature interval from ambient to 140degreesC. The formalism of electric modulus proved to be efficient in analysing and interpreting obtained data. For these composites two relaxation processes are revealed in the frequency range and temperature interval of the measurements. One is an interfacial dielectric relaxation (Maxwell-Wagner-Sillars), MWS and the other is a conductivity relaxation. They both follow the Cole-Davidson approach with the exponent gamma reflecting a distribution of relaxation times with the characteristics of each process. AC conductivity of these composites is frequency and temperature dependant, it generally follows the exponential law sigma(ac) similar to omega(s) and reveals a conductivity relaxation process, in the low frequencies. (C) 2002 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Composites - Part A: Applied Science and Manufacturing	en
dc.identifier.doi	10.1016/S1359-835X(01)00117-8	en
dc.identifier.isi	ISI:000173550200009	en
dc.identifier.volume	33	en
dc.identifier.issue	3	en
dc.identifier.spage	375	en
dc.identifier.epage	384	en