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<p>Polyetheretherketone (PEEK) is a preeminent high-performance material whose unique molecular architecture confers exceptional mechanical properties, outstanding thermal stability, remarkable chemical inertness, and excellent processability. Its elastic modulus (3.5-4.0 GPa) closely matches that of human cancellous (trabecular) bone (0.1-5 GPa), making it an attractive candidate for orthopedic applications where stress shielding is a concern. Its fatigue resistance surpasses that of many metallic alloys, its inherent radiolucency facilitates clinical imaging, and its dimensional stability under extreme conditions is reliable—attributes that position PEEK as a strategic material across the aerospace, automotive, electronics, nuclear, and biomedical sectors. Although several reviews have addressed individual aspects of PEEK, no single work has yet provided an integrated perspective spanning molecular design, nanocomposite engineering, surface functionalization, advanced manufacturing, and multi-sector applications. The present review fills this gap by synthesizing the most recent advances (2022–2026) across all these domains and by introducing dedicated discussions on metal-filled PEEK systems and unified tribological mechanisms, topics that have been largely overlooked in prior reviews. By bridging materials design, processing innovation, and functional integration, this review charts a roadmap for the evolution of PEEK from a structural material toward next-generation multifunctional intelligent systems.</p>

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From Structural Design to Emerging Applications: High-performance PEEK Materials—A Comprehensive Review

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Yang Zhang,
  • Ying Wang,
  • Zhao Zhang,
  • Maiyong Zhu,
  • Songjun Li

摘要

Polyetheretherketone (PEEK) is a preeminent high-performance material whose unique molecular architecture confers exceptional mechanical properties, outstanding thermal stability, remarkable chemical inertness, and excellent processability. Its elastic modulus (3.5-4.0 GPa) closely matches that of human cancellous (trabecular) bone (0.1-5 GPa), making it an attractive candidate for orthopedic applications where stress shielding is a concern. Its fatigue resistance surpasses that of many metallic alloys, its inherent radiolucency facilitates clinical imaging, and its dimensional stability under extreme conditions is reliable—attributes that position PEEK as a strategic material across the aerospace, automotive, electronics, nuclear, and biomedical sectors. Although several reviews have addressed individual aspects of PEEK, no single work has yet provided an integrated perspective spanning molecular design, nanocomposite engineering, surface functionalization, advanced manufacturing, and multi-sector applications. The present review fills this gap by synthesizing the most recent advances (2022–2026) across all these domains and by introducing dedicated discussions on metal-filled PEEK systems and unified tribological mechanisms, topics that have been largely overlooked in prior reviews. By bridging materials design, processing innovation, and functional integration, this review charts a roadmap for the evolution of PEEK from a structural material toward next-generation multifunctional intelligent systems.