Polyether ether ketone: Difference between revisions

Revision as of 10:57, 23 June 2006

Revision as of 16:47, 20 July 2006

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<tr><td>[[melting point]]</td><td>334°[[Degree Celsius|C]]</td></tr>

<tr><td>Vicat B{{ref|<1>citation needed}}</td><td>-</td></tr>

<tr><td>heat transfer coefficient (λ)</td><td>0.25 W/[[meter|m]].[[Kelvin|K]]</td></tr>

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<tr><td>Price</td><td>25-50 €/[[kilogram|kg]]</td></tr>

<tr><th!-- colspan="2"Dead align=left><small>#note {{note|"<vic>}}": Deformation temperature at 10kN needle load <small></th></tr> -->

<tr><th colspan="2" align=left><small>source: A.K. vam der Vegt & L.E. Govaert, Polymeren, <small></th></tr>

<tr><th colspan="2" align=left><small>van keten tot kunstof, ISBN 90-407-2388-5<small></th></tr>

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However, it's performance in acids is very dependent on the type of acid - PEEK shows poor resistance in concentrated sulphiric, nitric, hydrochloric, hydrobromic and other mineral acids (though performance may be adequate for short term use with these acids in very dilute form). It's resistance to hydrofluoric acid and oleum is very poor. PEEK shows good resistance to phosphoric acid and organic acids (acetic, citric, oxalic, tataric etc.), but varying resistance in the presence of halogens. PEEK is resistant to dissolution by some formaldehydes and ketones such as acetone, but not (at higher temperature) methylethyl ketone.

[[Category:Organic polymers]]