The Influence of Semiconductive Binary Sb2S3-Yb3S4 System on Electrical Conductivity Property of Epoxy Composites

The purpose of this study is to develop the semiconductive composites. Semiconducting glass (SG) binary system Sb2S3-Yb3S4 in mole ratio 1:1 was synthesized and was doped with I-2. Next, electrically conductive DGEBA-type epoxy resin (ER)/SG-filled composites and epoxy toluene oligomer (ETO) modified epoxy resin-SG filled composites were developed with 3-10 wt. % of fillers and characterized. As a result, the effects of the modifier and amount of semiconductive filler on the electrical properties of commercial epoxy resin were examined. Percolation concentration was 7 wt. % for all composites. For the SG-reinforced composites, the dispersion of the fillers is investigated by X-ray diffraction (XRD) and by scanning electron microscopy (SEM).