Effect of size, concentration, and nature of fillers on crystallinity, thermal, and mechanical properties of polyetheretherketone composites

Polyetheretherketone (PEEK) composites exhibit high stiffness, chemical stability, and heat resistance they are therefore employed in applications under severe operating environments. This work aims to provide insight into the effect of size, concentration, type fillers on thermal mechanical properties PEEK. A total 32 used highlight influence nature (lamellae, such as boron nitride graphite silicon carbide alumina), size (nano micrometric), content (2.5, 5, 7.5, 10 vol%) fillers. The melting temperature lamellar thickness did not change regardless filler. thermomechanical analysis demonstrates that form a percolating network contribute significantly enhancement storage modulus. increase modulus is proportional filler content, it more pronounced for micro composites. As expected, formed at lower concentrations than spherical ones. highest conductivity achieved with 0.823 W m?1 K?1, which twice PEEK vol%. Moreover, use micrometric results attributed higher amount efficient hot zones transfer.