Polyether ether ketone
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"PEEK" redirects here. For the command in computing, see PEEK and POKE.
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[2] and brought to market in the early 1980s by part of Imperial Chemical Industries (ICI) that later became Victrex PLC.[3]
Quick Facts Identifiers, Properties ...
Identifiers | |
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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).
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Quick Facts Physical properties, Density (ρ) ...
Polyether ether ketone | |
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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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