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Interfacial relaxation phenomena in particulate composites of epoxy resin with copper or iron particles

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dc.contributor.author Tsangaris, GM en
dc.contributor.author Kouloumbi, N en
dc.contributor.author Kyvelidis, S en
dc.date.accessioned 2014-03-01T01:12:01Z
dc.date.available 2014-03-01T01:12:01Z
dc.date.issued 1996 en
dc.identifier.issn 0254-0584 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/11921
dc.subject Composites en
dc.subject Dielectrics en
dc.subject Interfacial phenomena en
dc.subject Metal fillers en
dc.subject Relaxation en
dc.subject.classification Materials Science, Multidisciplinary en
dc.subject.other Activation energy en
dc.subject.other Copper en
dc.subject.other Dielectric materials en
dc.subject.other Dielectric relaxation en
dc.subject.other Electric losses en
dc.subject.other Epoxy resins en
dc.subject.other Frequencies en
dc.subject.other Interfaces (materials) en
dc.subject.other Iron en
dc.subject.other Polarization en
dc.subject.other Powder metals en
dc.subject.other Thermal effects en
dc.subject.other Debye type relaxation en
dc.subject.other Maxwell-Wagner-Sillars polarization en
dc.subject.other Metal fillers en
dc.subject.other Relaxation frequency en
dc.subject.other Composite materials en
dc.title Interfacial relaxation phenomena in particulate composites of epoxy resin with copper or iron particles en
heal.type journalArticle en
heal.identifier.primary 10.1016/0254-0584(96)80063-0 en
heal.identifier.secondary http://dx.doi.org/10.1016/0254-0584(96)80063-0 en
heal.language English en
heal.publicationDate 1996 en
heal.abstract Interfacial dielectric relaxations have been studied in composites made with epoxy resin and copper or iron particles. Over the temperature range reported (20-160 degrees C) relaxation peaks are formed in the 10-10(3) Hz frequency range. They are attributed to the Maxwell-Wagner-Sillars (MWS), or interfacial, polarization effect, created in heterogeneous dielectrics. The observed MWS loss peaks shift to lower frequencies if the content of the composites in the metal particles is increased. From the temperature dependence of relaxation frequency, the activation energy for the process is estimated to be 45 kJ mol(-1) (0.4 eV). Dielectric losses of the composites in the 10-10(3) Hz frequency range can be regarded as the sum of losses from a Debye-type relaxation and of the conductivity term sigma/omega. Interfacial dielectric losses are insignificant at high frequencies. en
heal.publisher ELSEVIER SCIENCE SA LAUSANNE en
heal.journalName Materials Chemistry and Physics en
dc.identifier.doi 10.1016/0254-0584(96)80063-0 en
dc.identifier.isi ISI:A1996UU37200007 en
dc.identifier.volume 44 en
dc.identifier.issue 3 en
dc.identifier.spage 245 en
dc.identifier.epage 250 en


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