Nowadays, carbon-polymer composites find applications in various industries due to their outstanding strength-to-weight ratio. These findings significantly contribute to the field of high-performance composite materials, confirming that the hot pressing of PEEK and graphite sheets results in enhanced thermal and mechanical properties. Furthermore, XRD analysis revealed a 35.5% increase in crystallinity in the fabricated composites compared to pristine PEEK. Additionally, nanoindentation tests confirmed an increase in both Young's modulus and hardness of composites. Moreover, our mechanical tests demonstrated a 172% increase in ultimate tensile strength of PGP compared to neat graphite. Both three-layered PEEK/graphite/PEEK (PGP) and five-layered PEEK/graphite/PEEK/graphite/PEEK (PG) 2P composites exhibited superior thermal stability at high temperatures compared to neat PEEK. Our findings showed a substantial interfacial interaction between PEEK and graphite, indicating successful composite formation. The newly formed materials were then subjected to various tests, including Scanning Electron Microscopy, Thermogravimetric Analysis, mechanical properties tests, nanoindentation tests, and X-Ray Diffraction to assess their structural, thermal, and mechanical properties. The composites were fabricated using a hot press method at a temperature below 310 ☌. The main objective was to enhance graphite's inherent properties by the addition of PEEK to produce materials with improved thermal and mechanical stability for high-performance applications. This work studies high-performance laminate composite materials made of graphite and poly(ether-ether-ketone) (PEEK).
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