Review: Recent Progress on Poly(ether ether ketone) and Its Composites for Biomedical, Machinery, Energy and Aerospace Applications

Poly(ether ether ketone) (PEEK) has drown researchers' wide attention because of the exceptional performances such as mechanical properties, thermal stability, chemical resistance, and biocompatibility. These properties endow it with broad potential use in biomedical, engineering, and aerospace applications. In addition, multifunctional fillers have been intensively incorporated into PEEK matrix, as it is conducive to the enhanced properties, and has the desired properties in concrete applications. This review introduced the basic content and synthesis pathway of PEEKs and their composites, focusing on the various applications, including biomedical, machinery, energy storage, and aerospace applications. Considerable efforts have been devoted to explore the concrete modified method to obtain the desired performances of PEEK based materials. At the end, existing problems and development directions for the PEEK based materials were analyzed and predicted.