Study on Properties of PEEK Composites Reinforced by SCF

Abstract

Because of the excellent performance of Polyetheretherketone (PEEK), it is widely used in aerospace, mechanic, electronic and auto industry. Here the properties of injected molded PEEK composites reinforced by short carbon fiber (SCF), and the influence of SCF on the mechanical performance and thermal expansion performance were studied. It was indicated how the mechanical and thermal performance were changed with SCF content. Also the microstructure of PEEK composites was studied by taking SEM photographs. The results showed, in the here studied range of SCF content, the mechanical performance of PEEK composites rapidly increased with the increasing of SCF content. While the weight percent of short fibers was more than 10%, this increasing tendency became slow. SEM photographs showed, the interaction between base material PEEK and SCF was good, that because SCF could be good connected with PEEK base material, and the filling with SCF could also decrease the thermal expansion coefficient of PEEK composites.