Polyether ether ketone
Polyether ether ketone (PEEK) is a colourless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications. It was invented in November 1978 and brought to market in the early 1980s by part of Imperial Chemical Industries (ICI) that later became Victrex PLC.
| Identifiers | |
|---|---|
PubChem CID |
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| Properties | |
| C 19H 12O 3 | |
| Molar mass | 288.3 g/mol |
| Density | 1320 kg/m3 |
| Melting point | 343 °C (649 °F; 616 K) |
| Related compounds | |
Related compounds |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
| Polyether ether ketone | |
|---|---|
| Physical properties | |
| Density (ρ) | 1320 kg/m3 |
| Water absorption—over 24 hours | 0.1% |
| Mechanical properties | |
| Young's modulus (E) | 3.6 GPa |
| Tensile strength (σt) | 90–100 MPa |
| Elongation (ε) at break | 50% |
| Notch test | 55 kJ/m2 |
| Thermal properties | |
| Melting temperature (Tm) | 343 °C |
| Glass transition temperature (Tg) | 143 °C |
| Thermal conductivity (k) | 0.25 W/(m⋅K) |
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