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Title

Thermo-structural analysis and electrical conductivity behavior of epoxy/metals composites

AuthorsBoumedienne, N.; Faska, Y.; Maaroufi, A.; Pinto, G.; Vicente, L.; Benavente, Rosario
KeywordsStructure and properties
Percolation
Conducting polymer
Glass Transition
Composite
Issue Date2017
PublisherElsevier
CitationJournal of Physics and Chemistry of Solids 104: 185-191 (2017)
AbstractThis paper reports on the elaboration and characterization of epoxy resin filled with metallic particles powder (aluminum, tin and zinc) composites. The scanning electron microscopy (SEM) pictures, density measurements and x-ray diffraction analysis (DRX) showed a homogeneous phase of obtained composites. The differential scanning calorimetry revealed a good adherence at matrix-filler interfaces, confirming the SEM observations. The measured glass transition temperatures depend on composites fillers’ nature. Afterwards, the electrical conductivity of composites versus their fillers’ contents has been investigated. The obtained results depict a nonlinear behavior, indicating an insulator to conductor phase transition at a conduction threshold; with high contrast of ten decades. Hence, the elaborated materials give a possibility to obtain dielectric or electrically conducting phases, which can to be interesting in the choice of desired applications. Finally, the obtained results have been successfully simulated on the basis of different percolation models approach combined with structural characterization inferences.
Publisher version (URL)http://dx.doi.org/10.1016/j.jpcs.2017.01.018
URIhttp://hdl.handle.net/10261/147714
DOIhttp://dx.doi.org/10.1016/j.jpcs.2017.01.018
Identifiersdoi: 10.1016/j.jpcs.2017.01.018
issn: 0022-3697
Appears in Collections:(ICTP) Artículos
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