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Structure‐electrical properties relationships of polymer composites filled with Fe‐powder
Author(s) -
Zois Haralampos,
Apekis Lazaros,
Mamunya Yevgen P.
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200390103
Subject(s) - materials science , composite material , percolation threshold , dielectric , percolation (cognitive psychology) , polymer , microstructure , permittivity , percolation theory , composite number , viscoelasticity , relaxation (psychology) , electrical resistivity and conductivity , conductivity , psychology , social psychology , chemistry , optoelectronics , neuroscience , electrical engineering , biology , engineering
Structure‐properties relationships of composite materials, consisting of a polymer matrix and metal inclusions, is very important for designing new materials with desirable properties. In the present work the electrical and dielectric properties of several composites, consisting of a polymer matrix and iron (Fe) particles as filler, were investigated. Broadband dielectric relaxation spectroscopy measurements were carried out. The electrical behaviour of the composites is described in terms of the percolation theory. Percolation threshold values were calculated and the values of the dielectric permittivity critical exponent were found in good agreement with the theoretical ones. The influence of using different polymer matrices on the physical properties of the composites was also of particular interest. The results were related to the microstructure of the composites and a schematic model was proposed.