I-Polyether ether ketone (PEEK) Izakhiwo Nezinhlelo zokusebenza

I-Polyether ether ketone (PEEK) i-polymer ye-organic thermoplastic engenambala emndenini we-polyaryletherketone (PAEK), esetshenziswa ezinhlelweni zobunjiniyela.Yaqala yethulwa yi-Victrex PLC, kwase kuba yi-Imperial Chemical Industries (ICI) ekuqaleni kwawo-1980.

Izakhiwo:I-PEEK i-semicrystalline thermoplastic enezakhiwo ezinhle kakhulu zokumelana nemishini namakhemikhali ezigcinwa kumazinga okushisa aphezulu.Izimo zokucubungula ezisetshenziselwa ukubumba i-PEEK zingathonya ubucwebe ngakho-ke izakhiwo zemishini.I-Young's modulus ingu-3.6 GPa futhi amandla ayo aqinile angama-90 kuya ku-100 MPa.[5]I-PEEK inezinga lokushisa lokushintsha kwengilazi elicishe libe ngu-143 °C (289 °F) futhi inyibilika cishe ku-343 °C (662 °F).Amanye amabanga anezinga lokushisa lokusebenza eliwusizo elifinyelela ku-250 °C (482 °F).I-thermal conductivity ikhuphuka cishe ngokuhambisana nezinga lokushisa phakathi kwezinga lokushisa legumbi kanye nezinga lokushisa le-solidus.Imelana kakhulu nokuwohloka kokushisa, kanye nokuhlaselwa yizo zombili izindawo zemvelo nezamanzi.Ihlaselwa ama-halogen nama-Bronsted ne-Lewis acid aqinile, kanye namanye ama-halogenated compounds nama-aliphatic hydrocarbons emazingeni okushisa aphezulu.Incibilika ku-sulfuric acid egxilile ekamelweni lokushisa, nakuba ukuchithwa kungathatha isikhathi eside kakhulu ngaphandle uma i-polymer isesimweni esinezinga eliphezulu lendawo-to-volume ratio, njengempushana encane noma ifilimu encane.Inokumelana okuphezulu ne-biodegradation.

Izicelo:Ngenxa yokuqina kwayo, i-PEEK isetshenziselwa ukwenza izinto ezisetshenziswa ekusetshenzisweni okunzima, okuhlanganisa ama-bheringi, izingxenye zepiston, amaphampu, amakholomu e-chromatography ye-liquid esebenza kahle kakhulu, ama-compressor plate valves, kanye nokufakwa kwekhebula likagesi.Ingenye yamapulasitiki ambalwa ahambisana nezicelo ze-vacuum eziphezulu kakhulu.I-PEEK ithathwa njenge-biomaterial ethuthukisiwe esetshenziswa ekufakweni kwezokwelapha, isb, ukusetshenziswa nge-high-resolution magnetic resonance imaging (MRI), ekwakheni ingxenye yekhanda logebhezi olungena esikhundleni ezinhlelweni ze-neurosurgical.

I-PEEK ithola ukusetshenziswa okwandisiwe kumishini yokuhlanganisa umgogodla nezinduku zokuqinisa.Isetshenziswa kakhulu embonini ye-aerospace, yezimoto, kanye namakhemikhali.Ama-PEEK seal nama-manifolds avame ukusetshenziswa ekufakweni koketshezi.I-PEEK futhi yenza kahle ezinhlelweni zokusebenza lapho amazinga okushisa aqhubekayo (afika ku-500 °F/260 °C) avamile.