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

AutorBoumedienne, N.; Faska, Y.; Maaroufi, A.; Pinto, G.; Vicente, L.; Benavente, Rosario
Palabras claveStructure and properties
Conducting polymer
Glass Transition
Fecha de publicación2017
CitaciónJournal of Physics and Chemistry of Solids 104: 185-191 (2017)
ResumenThis 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.
Versión del editorhttp://dx.doi.org/10.1016/j.jpcs.2017.01.018
Identificadoresdoi: 10.1016/j.jpcs.2017.01.018
issn: 0022-3697
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