Polyether Ether Ketone (PEEK) polymer material is a special high-temperature engineering material with excellent properties such as high-temperature resistance, self-lubrication, high mechanical strength, and easy processing and molding. Compared to other engineering materials, PEEK has the following characteristics. Today, we will detail its various properties.
1. High Temperature Resistance: PEEK has a glass transition temperature of 143°C, a melting point of 343°C, and a load deformation temperature of up to 316°C (for 30% GF or CF reinforced grades). The continuous service temperature can reach 260°C. It boasts excellent thermal stability, with a lower coefficient of thermal expansion than steel, allowing steel products to be replaced without size alteration.
2. Wear Resistance: PEEK boasts excellent sliding properties, making it suitable for applications that demand low friction coefficients (0.15-0.30) and wear resistance, along with its distinctive non-tangling characteristics. Carbon fiber, graphite, composite modified grades, or grades with 30% carbon fiber reinforcement all exhibit superior wear-resistant sliding properties.
3. Chemical Resistance: PEEK boasts excellent resistance to acids, alkalis, oxidizers, hydrocarbons, salts, steam, oils, and other liquids. Its chemical resistance surpasses many specialty metals and is comparable to that of nickel steel.
4. Flame Retardancy: PEEK can achieve the UL94 V-0 flame retardancy standard of the American safety testing laboratory company without any flame retardant additives. The smoke and toxic gas emissions during combustion are low.
5. Mechanical Properties: PEEK is a material that balances both flexibility and rigidity. Particularly, its excellent fatigue resistance to alternating stresses is comparable to that of alloy materials.
6. Hydrolysis Resistance: PEEK maintains its tensile or bending properties largely unchanged after 2500+ hours in steam conditions at 200℃ and 1.4 MPa pressure, demonstrating excellent hydrolysis resistance and tolerance for high-pressure steam sterilization.
7. Fatigue Resistance: PEEK exhibits excellent fatigue resistance in resins.
8. Radiation Resistance: PEEK maintains its integrity without becoming brittle after exposure to over 109 rads and can be penetrated by X-rays (penetrating radiation). It also retains excellent insulating properties at a gamma radiation dose of up to 1100 Mrad.
9. Insulation Properties: PEEK resin material exhibits excellent electrical insulation properties over a wide temperature range, with low dielectric loss at high frequencies.
10. Processing Methods: PEEK can be processed through injection, extrusion, molding, blow molding, spinning, and powder coating. The production process is streamlined with simple operations and allows for continuous production.
