|Young's modulus (E)||3.6 GPa|
|Elongation @ break||50%|
|Glass temperature||143 DegreeC|
|Tensile strength (t)||90-100 MPa|
|Notch test||55 kJ/m2|
|Melting Point||~343 DegreeC|
|Thermal Conductivity||0.25 W/m.K|
|Appearance||Colourless Organic Thermoplastic Polymer|
Polyether Ether Ketone (PEEK) is a high-performance thermoplastic polymer known for its exceptional mechanical, thermal, and chemical properties. It belongs to the family of polyaryl ether ketones and is derived from the condensation polymerization of biphenyl and 4,4'-difluorobenzophenone.
Some key characteristics of PEEK include:
1. High Temperature Resistance: PEEK exhibits excellent thermal stability, with a melting point around 343°C (649°F) and a glass transition temperature of approximately 143°C (289°F). It can withstand prolonged exposure to high temperatures without significant degradation, making it suitable for applications in extreme environments.
2. Mechanical Strength: PEEK is renowned for its high mechanical strength and rigidity. It possesses a high tensile strength, excellent impact resistance, and good dimensional stability. It retains its mechanical properties even at elevated temperatures, making it suitable for demanding structural applications.
3. Chemical Resistance: PEEK has exceptional resistance to a wide range of chemicals, including acids, bases, solvents, and fuels. It is highly resistant to hydrolysis, making it suitable for use in environments with moisture or steam. This chemical resistance enables PEEK to be employed in various corrosive or chemically aggressive applications.
4. Electrical Properties: PEEK exhibits excellent electrical properties, including high dielectric strength, low dielectric constant, and low dissipation factor. It is an excellent insulator and is often used in electrical and electronic applications that require good electrical performance.
5. Biocompatibility: PEEK is biocompatible and bioinert, meaning it does not elicit a significant immune response or cause adverse reactions when in contact with living tissue. This property makes PEEK suitable for medical and dental applications, such as implants, surgical instruments, and dental prosthetics.
6. Resistance to Wear and Friction: PEEK has low friction and excellent wear resistance, making it suitable for applications involving sliding or moving parts. It can be used as a bearing material or as a coating to reduce friction and improve the lifespan of components.
Due to its outstanding properties, PEEK finds applications in a wide range of industries, including aerospace, automotive, electrical and electronics, medical, and oil and gas. It is used for components such as seals, gaskets, bearings, pumps, valves, electrical connectors, cable insulation, structural parts, and more. Its combination of high temperature resistance, mechanical strength, chemical resistance, and biocompatibility makes PEEK a preferred choice in demanding and critical applications where performance and reliability are paramount.