Kufanana kwa Magwiridwe ndi Kufananiza Pakati pa PEI ndi PEEK

Polyetherimide, yotchedwa PEI mu Chingerezi, Polyetherimide, yokhala ndi maonekedwe a amber, ndi pulasitiki ya amorphous thermoplastic special engineering yomwe imayambitsa flexible ether bond (- Rmae Omi R -) mu mamolekyu olimba a polyimide autali.

Chithunzi cha PEI

Monga mtundu wa thermoplastic polyimide, PEI imatha kuwongolera bwino kwambiri kuperewera kwa thermoplasticity ndi kukonza kovuta kwa polyimide poyambitsa chomangira cha ether (- Rmurmurr R -) mu tcheni chachikulu cha polima ndikusunga mawonekedwe a mphete ya polyimide.

Mawonekedwe a PEI

Ubwino:

Kuthamanga kwakukulu, pamwamba pa 110MPa.

Mphamvu yopindika kwambiri, pamwamba pa 150MPa.

Wabwino thermo-makina kubereka mphamvu, matenthedwe mapindikidwe kutentha kuposa kapena wofanana 200 ℃.

Kukana kwabwino kukwawa komanso kukana kutopa.

Utsi wabwino kwambiri komanso utsi wochepa.

Zabwino kwambiri dielectric ndi insulation katundu.

Kukhazikika kwabwino kwambiri, kocheperako kocheperako pakukulitsa kwamafuta.

High kutentha kukana, angagwiritsidwe ntchito pa 170 ℃ kwa nthawi yaitali.

Ikhoza kudutsa mu microwave.

Zoyipa:

Muli BPA (bisphenol A), yomwe imaletsa kugwiritsa ntchito zinthu zokhudzana ndi makanda.

Notch impact sensitivity.

Kukaniza kwa alkali ndikofala, makamaka pakutentha.

PEEK

Dzina la sayansi la PEEK polyether ether ketone ndi mtundu wa polima womwe uli ndi chomangira chimodzi cha ketone ndi zomangira ziwiri za ether mumaketani akulu.Ndizinthu zapadera za polima.PEEK ali ndi maonekedwe beige, processability wabwino, kutsetsereka ndi kuvala kukana, zabwino zokwawa kukana, zabwino kwambiri mankhwala kukana, kukana zabwino hydrolysis ndi nthunzi superheated, kutentha ma radiation, mkulu mapindikidwe kutentha kutentha ndi wabwino mkati lawi retardancy.

PEEK idagwiritsidwa ntchito koyamba pazamlengalenga kuti isinthe aluminium, titaniyamu ndi zida zina zachitsulo kuti apange mbali zamkati ndi zakunja za ndege.Chifukwa PEEK ili ndi katundu wabwino kwambiri, imatha kusintha zinthu zakale monga zitsulo ndi zitsulo zadothi m'magawo ambiri apadera.Kukana kwake kutentha kwakukulu, kudzipaka mafuta, kukana kuvala ndi kukana kutopa kumapangitsa kuti ikhale imodzi mwa mapulasitiki otchuka kwambiri a uinjiniya.

Monga zida za polima za thermoplastic, mawonekedwe a PEI ndi ofanana ndi a PEEK, kapenanso kusinthidwa kwa PEEK.Tiyeni tione kusiyana kwa zinthu ziwirizi.

Poyerekeza ndi PEEK, ntchito yonse ya PEI imakhala yochititsa chidwi kwambiri, ndipo phindu lake lalikulu liri pamtengo wake, womwenso ndi chifukwa chachikulu chomwe zipangizo zina zopangira ndege zimasankhidwa ndi zipangizo zamagulu a PEI.Mtengo wokwanira wa magawo ake ndi wotsika kuposa wazitsulo, zopangira thermosetting ndi zophatikiza za PEEK.Tiyenera kukumbukira kuti ngakhale mtengo wa PEI ndi wokwera kwambiri, kukana kwake kutentha sikokwera kwambiri.

Mu zosungunulira za chlorinated, kusweka kwa nkhawa kumachitika mosavuta, ndipo kukana kwa zosungunulira za organic sikuli kwabwino ngati kwa theka-crystalline polima PEEK.Pokonza, ngakhale PEI itakhala ndi mapulasitiki aukadaulo amtundu wa thermoplastic, imafunika kutentha kosungunuka.