Polyether ether ketone (PEEK) ke polymer ea organic thermoplastic e se nang 'mala lelapeng la polyaryletherketone (PAEK), e sebelisoang lits'ebetsong tsa boenjiniere.E ile ea hlahisoa qalong ke Victrex PLC, e ntan'o ba Imperial Chemical Industries (ICI) mathoasong a bo-1980.
Thepa:PEEK ke semicrystalline thermoplastic e nang le thepa e ntle haholo ea ho hanyetsa lik'hemik'hale le lik'hemik'hale tse bolokiloeng mochesong o phahameng.Maemo a ts'ebetso a sebelisetsoang ho bopa PEEK a ka susumetsa crystallinity mme ka hona thepa ea mochini.The Young's modulus ke 3.6 GPa le tensile matla a eona 90 ho 100 MPa.[5]PEEK e na le mocheso oa phetoho ea khalase o ka bang 143 °C (289 °F) 'me e qhibiliha ho pota 343 °C (662 °F).Likereiti tse ling li na le mocheso o sebetsang oa ho fihla ho 250 °C (482 °F).Thermal conductivity e eketseha ka mokhoa o lekanang le mocheso pakeng tsa mocheso oa kamore le mocheso oa solidus.E hanyetsana haholo le ho senyeha ha mocheso, hammoho le ho hlaseloa ke libaka tsa tlhaho le tse nang le metsi.E hlaseloa ke li-halogen le li-acid tse matla tsa Bronsted le Lewis, hammoho le metsoako e meng ea halogenated le aliphatic hydrocarbons ka mocheso o phahameng.E qhibiliha ka sulfuric acid e concentrated ka mocheso oa kamore, le hoja ho qhibiliha ho ka nka nako e telele haholo ntle le haeba polymer e le ka sebōpeho se nang le tekanyo e phahameng ea sebaka-ho-volume, e kang phofo e ntle kapa filimi e tšesaane.E na le khanyetso e phahameng ea biodegradation.
Lisebelisoa:Ka lebaka la ho tiea ha eona, PEEK e sebelisetsoa ho etsa lintho tse sebelisoang lits'ebetsong tse boima, ho kenyeletsoa li-bearings, likarolo tsa piston, lipompo, litšiea tsa chromatography tsa mokelikeli tse sebetsang hantle haholo, li-valve tsa li-compressor plate le li-cable cable insulation.Ke e 'ngoe ea lipolasetiki tse seng kae tse tsamaellanang le lisebelisoa tsa vacuum tse phahameng haholo.PEEK e nkuoa e le biomaterial e tsoetseng pele e sebelisoang ho li-implants tsa bongaka, mohlala, tšebeliso e nang le setšoantšo se phahameng sa "magnetic resonance imaging" (MRI), bakeng sa ho theha karolo e itseng ea lehata lits'ebetsong tsa neurosurgical.
PEEK e fumana ts'ebeliso e ntseng e eketseha ea lisebelisoa tsa mokokotlo oa mokokotlo le lithupa tse matlafatsang.E sebelisoa haholo indastering ea lifofane, tsa likoloi le tsa lik'hemik'hale.Litiiso tsa PEEK le manifolds hangata li sebelisoa ts'ebetsong ea mokelikeli.PEEK e boetse e sebetsa hantle lits'ebetsong moo mocheso o tsoelang pele o phahameng (ho fihla ho 500 °F/260 °C) o tloaelehileng.
Nako ea poso: Dec-24-2018