Tailoring the multiphase composite materials' electrical properties

The paper aims to present the electrical properties of multiphase (particle-particle combinations) polymeric composite materials and the influencing factors on their electrical behaviour. The samples were manufactured using a self-developed manufacturing technology, from different combinations of iron and graphite particles embedded (different volume fractions) into a poly-vinyl acetate (PVAc) matrix known for its insulating character. The electrical properties (e.g. resistivity, resistance or conductivity) and their variation with electrical current were retrieved using a LCR meter, followed by the use of an impedance analyzer in case of the measurements done on samples subjected to an external stress state, for different values of external forces applied using a LS 100 Plus device in compressive state, on 5 samples for each category considered. The experimental data are subjected to statistical analysis, and graphical representation of retrieved values will aid to quantify the influencing factors on the electrical behaviour of the multiphase composites considered.