What material is PEEK?

PEEK (Polyether Ether Ketone) is a high-performance engineering plastic known for its strength, chemical resistance, and high-temperature stability. It belongs to the family of polyaryletherketones (PAEK), which are aromatic thermoplastics that offer superior properties for demanding applications.

Chemical Composition PEEK is synthesized by polymerizing a combination of hydroquinone (a dihydroxybenzene) and 4,4′-difluorobenzophenone (a fluorinated compound). This gives PEEK its unique structure, which contributes to its remarkable strength and resistance to degradation under harsh conditions. The polymer contains ether and ketone groups in its backbone, making it both rigid and thermally stable.

Properties PEEK is known for its outstanding thermal stability, capable of withstanding continuous temperatures up to 260°C (500°F). It also offers excellent chemical resistance against acids, bases, and solvents. PEEK is mechanically robust, with high tensile strength, stiffness, and dimensional stability. Additionally, it has low moisture absorption, making it suitable for use in moisture-sensitive environments.

Applications PEEK is widely used in aerospace, automotive, medical, and industrial applications. It is used in the production of components like bearings, seals, and gears, where high strength and resistance to wear and chemicals are critical. In medical applications, PEEK is used for surgical implants and devices due to its biocompatibility.

Cost and Availability PEEK is relatively expensive compared to other plastics due to its complex manufacturing process and high-performance characteristics. However, its exceptional properties make it a material of choice for demanding and high-end applications.

PEEK is a versatile and high-performing polymer ideal for applications requiring high strength, thermal stability, and chemical resistance. Its use in critical industries demonstrates its reliability and suitability for extreme environments.