Interface properties influence the effective dielectric constant of composites

George Chatzigeorgiou (1) , Ali Javili (2) , Paul Steinmann (3)

1 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
2 Stanford University
3 FAU - Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg

In this work we propose a micromechanics model, based on the composite spheres assemblage method, for studying the electrostatic behaviour of particle and porous composites when the interface between the particle (or the pore) and the matrix has its own independent behaviour. Examples from experimental results in porous media and particle composites are utilized to demonstrate the model’s capabilities. The current model shows a better agreement with experiments compared with other available studies. Furthermore, it is shown that the interface dielectric constant is independent of the experiments which prove its nature as a material parameter.

Mots clés: Coating; Nanocomposites; Electrical properties; Fibre/matrix bond; Interface

Domaines: Matériaux; Mécanique [physics.med-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]

George Chatzigeorgiou, Ali Javili, Paul Steinmann. Interface properties influence the effective dielectric constant of composites. Philosophical Magazine, 2015, 95 (28-30), pp.3402-3412. ⟨10.1080/14786435.2015.1051155⟩. ⟨hal-02537347⟩