PEEK (Polyetheretherketone)
PEEK
PEEK (polyetheretherketone)
Polyketone (PK)
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Injection Moulding
Transparent Food Contact Recycled Biobased flame-retardant UV resistant
✓ This material meets the criteria ~ Specialized grades may meet this criteria
Quality Scores
Mechanics
Thermal
Chemical
UV ageing
Injection moulding difficulty
Recycling
Performance profile
Mechanical properties
| Density | 1.28 to 1.30 g/cm³ ISO 1183 |
|---|---|
| Charpy notched impact | 4.8 to 7.0 kJ/m2 |
| Flexural modulus | 3020 to 4220 MPa ISO 178 |
| Flexural resistance | 160 MPa |
| Tensile modulus | 3030 to 4150 MPa ISO 527-1 |
| Tensile resistance | 68.4 to 78.1 MPa ISO 527-1, -2, Break |
| Tensile strain | 8.5 to 51 % ISO 527-1, -2, Break |
Chemical resistance and characteristics
Chemical resistance
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Recommended applications
- Film
- General purpose
- Containers
- Packaging
- Bags
- Tanks
- Food packaging
- Industrial applications
- Soufflé film
- Plumbing
Frequently asked questions
Injection at 360–400 °C, mould at 150–200 °C. Strict pre-drying: 6–8 hours at 150 °C. Requires high-performance injection moulding machines with a thermal barrier. Very high viscosity → high injection pressure. Moderate shrinkage (1.0–1.5 %).
PEEK is difficult to recycle economically. Production scrap is carefully recovered and reground for mixing into filled grades. Chemical recycling remains in the research stage.
Certain PEEK grades are approved for food contact (FDA, EU Regulation 10/2011) and medical applications (USP Class VI, ISO 10993). They are used in high-temperature food processing equipment and sterilisable surgical instruments.
