Editing Polyether ether ketone (section)

{{Short description|Semicrystalline thermoplastic with high mechanical and chemical resistance}}
{{redirect|PEEK|the command in computing|PEEK and POKE}}
{{Chembox
| Name           = Polyether ether ketone
| ImageFile      = Polyetherketon.svg
| ImageClass     = skin-invert
| Section1       = {{ Chembox Identifiers
| PubChem = 19864017
| CASNo = 31694-16-3
  }}
| Section2       = {{Chembox Properties
| Formula        = (C<sub>19</sub>H<sub>12</sub>O<sub>3</sub>)<sub>n</sub>
| MolarMass      = 288.3 g/mol
| Density        = {{convert|1320|kg/m3|g/cm3|disp=out}}
| MeltingPtC     = 343
  }}
| Section9       = {{Chembox Related
| OtherCompounds = {{Unbulleted list|[[Hydroquinone]]|[[4,4'-Difluorobenzophenone]]}}
  }}
}}
{{Infobox material
|name=Polyether ether ketone
|density={{convert|1320|kg/m3|g/cm3|disp=out}}
|water_absorption_24h=0.1%
|youngs_modulus=3.6&nbsp;[[GPa]]
|tensile_strength=90–100&nbsp;[[MPa]]
|elongation=50%
|notch_test=55&nbsp;kJ/m<sup>2</sup>
|melting_point=343&nbsp;°C
|glass_transition=143&nbsp;°C
|thermal_conductivity=0.25&nbsp;[[watt|W]]/([[metre|m]]⋅[[kelvin|K]])
|footnotes=<ref>{{cite book |first1=A.K. |last1=van der Vegt |first2=L.E. |last2=Govaert |title=Polymeren, van keten tot kunstof |language=dutch |date=2003 |publisher=DUP Blue |edition=5th |isbn=90-407-2388-5 |url=https://research.tue.nl/en/publications/polymeren-van-keten-tot-kunststof}}</ref>
}}
'''Polyether ether ketone''' ('''PEEK''') is a beige coloured [[organic compound|organic]] [[thermoplastic]] [[polymer]] in the [[polyaryletherketone]] (PAEK) family, used in engineering applications. It was invented in November 1978<ref>{{Cite web|title=Victrex celebrates 40 years of PEEK success|url=https://www.victrex.com/en/news/2018/11/40-years-of-peek-success|access-date=2021-11-01|website=Victrex|language=en}}</ref> and brought to market in the early 1980s by part of [[Imperial Chemical Industries|Imperial Chemical Industries (ICI)]], the PEEK division was acquired through a management buyout, giving rise to [[Victrex|Victrex PLC]].<ref>{{cite web|url=http://drakeplastics.com/peek/|title=Why PEEK?|website=drakeplastics.com|access-date=23 April 2018}}</ref>