Effect of Coupling Agent on the Mechanical, Thermal, Electrical, Rheological and Morphological Properties of Polyetheretherketone Composites Reinforced with Surface-Modified Mica

摘要

The mica fillers reinforced Polyetheretherketone (PEEK) composites were fabricated using compression molding technique. The mica surface was chemically modified using vinyltrimethoxy silane and 3-Aminopropyltriethoxy silane. The properties of treated mica PEEK composites were examined in terms of scanning electron microscopy, dynamic mechanical thermal analysis, differential scanning calorimetry and rheological behavior. The modified mica was observed to disperse more uniformly than the unmodified counterpart. The tensile strength and modulus also improved with treated mica filled PEEK composites. The increment of the dynamic modulus for the PEEK/treated mica composites is 82% at 250°C, indicating apparent improvement of high temperature mechanical properties.