Product: PEEK (Polyether Ether Ketone) High-Performance Engineering Plastic
Key Brands: Victrex, Solvay, Teijin
1. Technical Specifications
- Continuous Service Temperature: 250°C (short-term up to 300°C)
- Tensile Strength: 90-100 MPa
- Flexural Modulus: 3.5-4.0 GPa
- Chemical Resistance: Resistant to most acids, alkalis, and solvents
- Flammability Rating: UL94 V-0 (1.5mm)
- Dielectric Strength: 19 kV/mm
- Water Absorption: <0.5% (23°C water, 24h)
2. Application Scenarios
PEEK materials, with their outstanding all-around performance, are widely used in:
- Aerospace: Engine brackets, cabin interiors, cable jackets
- Medical Devices: Orthopedic implants, dental instruments, surgical navigation equipment
- Semiconductors: Wafer carriers, CMP retaining rings, plasma etching components
- Oil & Gas: Valve liners, pump housings, seals
- Automotive: Turbocharger impellers, fuel system components
3. Selection Guide
1. Unfilled vs. Reinforced Grades: General-purpose unfilled PEEK (450G) is suitable for injection molding complex parts; glass-fiber reinforced grades (450CA30) offer higher rigidity for structural components.
2. Carbon Fiber Reinforced (CF30): For applications with extreme wear requirements, CF30 grade is recommended — friction coefficient as low as 0.2, with service life improved by over 5x.
3. Medical-Grade Certification: Implants require ISO 10993-certified medical-grade materials; industrial grades must never be substituted.
4. Processing Tips: Mold temperature must be maintained at 350-380°C; insufficient temperature leads to low crystallinity and compromised mechanical properties. Drying condition: 150°C × 3 hours.
Conclusion
PEEK is one of the highest-performing thermoplastics available, maintaining stable properties even in the most demanding environments. Although material costs are significantly higher (approximately 20-30x that of standard nylon), the total cost of ownership advantages — through extended service life and high reliability — make PEEK the preferred material for advanced industrial applications.
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