Abstract
High performance polymers, poly(ether-ether-ketone) (PEEK) and poly(ethersulfone) (PES), were filled with mica and silica particulate fillers at different filler contents and the properties of the composites have been compared. The performance of these composites was analyzed in terms of the tensile, flexural, and impact properties and hardness measurements, and the properties were found to increase with increase in filler content. The scanning electron microscopy studies revealed that filler dispersion is good even at higher loadings. The dielectric strength, arc resistance, and heat distortion temperature of both mica- and microsilica-filled PEEK and PES composites are found to have better performance compared to unfilled polymers. Mica filler is found to be a better filler for PEEK than silica, while silica imparts better properties for PES than mica does.