I-Polyetherimide, noma i-PEI, i-polymer esebenza kahle kakhulu ye-thermoplastic eyaziwa ngezici zayo ezihlukile zemishini, ezishisayo, nezikagesi. Inamandla aphezulu, i-high-rigidity high-rigidity ephunga i-polyimide enokuqina okuhle kakhulu kokushisa. Ngezansi ezinye izici ezibalulekile ze-PEI:
Ithebula Elifingqiwe Lezakhiwo Ezisemqoka zeI-Polyetherimide (PEI)
| Impahla | Imininingwane |
|---|---|
| I-Glass Transition Temperature (Tg) | ~217°C (423°F) |
| I-Heat Deflection Temperature (HDT) | ~215–220°C (419–428°F) |
| Amandla Okuqina | 80–100 MPa (iyahlukahluka ngokwebanga) |
| Amandla e-Flexural | Iphezulu, ilungele izingxenye zesakhiwo |
| Ukumelana Nomthelela | Kuphakathi |
| I-Insulation kagesi | Okuhle kakhulu, amandla aphezulu e-dielectric |
| Ukumelana Kwamakhemikhali | Imelana nama-asidi, izisekelo, uwoyela, nezinyibilikisi |
| Ukumelana ne-Flame | Ukuzicisha ngokwakho, UL 94 V-0 isilinganiso |
| Ukumelana ne-UV | Kuhle, kodwa kungase kubephuzi ngokuhamba kwesikhathi ngaphandle kweziqinisi ze-UV |
| Ukungafihli | Ukudluliswa kokukhanya okuphezulu okungaphezulu kwama-80%. |
| I-Biocompatibility | Ifanele izicelo zezokwelapha, i-FDA iyahambisana |
1. Izakhiwo ezishisayo
•Ukumelana Nokushisa:
I-PEI inezinga lokushisa elimangalisayo lokuphambukisa ukushisa (i-HDT) phakathi kuka-215°C no-220°C (419°F–428°F), okuyivumela ukuba imelane namazinga okushisa aphezulu ngaphandle kokuguquka okuphawulekayo. Lokhu kuyenza ilungele izinhlelo zokusebenza ezidinga ukumelana nokushisa okuphezulu, njengezimboni zezimoto nezasemoyeni.
Igcina amandla kanye nokuzinza kwe-dimensional ngisho namazinga okushisa aphakeme.
•I-Glass Transition Temperature (Tg):
Nge-Tg ecishe ibe ngu-217°C (423°F), i-PEI igcina ubuqotho bayo besakhiwo ngisho emazingeni okushisa angaphezulu kakhulu kwebanga lokusebenza elivamile lamapulasitiki amaningi.
•I-Coefficient Ephansi Yokwanda Kwe-Thermal (CTE):
I-PEI ine-CTE ephansi kakhulu, okusho ukuthi ihlangabezana nokushintsha kobukhulu obuncane njengoba amazinga okushisa eshintshashintsha, okuyenza izinze kakhulu futhi ithembeke ezingxenyeni ezinembayo.
2. Izakhiwo Zemishini
•Amandla Aphezulu Nokuqina:
I-PEI inikezela ngezakhiwo ezihlukile zemishini, njengamandla aqine kakhulu, amandla aguquguqukayo, nokuqina, ezihlala zinjalo ngisho nakumazinga okushisa aphezulu. Lokhu kuyenza ifaneleke izingxenye zesakhiwo ezindaweni ezidinga kakhulu.
Amandla ayo okuqina ngokuvamile asukela ku-80 kuye ku-100 MPa, kuye ngebanga.
•Ukumelana Nomthelela:
Ngenkathi i-PEI iqinile ngokomshini, inokumelana nomthelela omaphakathi uma kuqhathaniswa namanye ama-thermoplastics wobunjiniyela. Ingakwazi ukusingatha imithwalo emikhulu kodwa ijwayele ukuphuka i-brittle ngaphansi kwezimo ezithile.
•Ukuzinza Kwe-Dimensional Okuhle Kakhulu:
Izingxenye ze-PEI zibonisa ukuzinza okuhle kakhulu ngaphansi kwemithwalo yemishini, okuyenza ifanelekele ukusetshenziswa okuqinile okuqinile njengamagiya anembayo, amabheringi, nezixhumi zikagesi.
3. Izakhiwo zikagesi
•Ukufakwa Okuhle Kagesi:
I-PEI iyisivikeli sikagesi esihle kakhulu, esinikeza amandla aphezulu e-dielectric kanye nokuhamba kagesi okuphansi. Lokhu kuyenza ilungele izinhlelo zokusebenza zikagesi neze-elekthronikhi, njengamabhodi esekethe, izixhumi, nama-insulators.
•Ukulahleka Kwe-Dielectric Okuphansi:
Ibonisa ukulahleka kwe-dielectric ephansi, okuyenza ifaneleke ukufakwa kukagesi we-high-frequency.
4. Ukumelana Kwamakhemikhali
•Ukumelana Okuhle Kwekhemikhali:
I-PEI imelana nezinhlobonhlobo zamakhemikhali, okuhlanganisa ama-asidi, izisekelo, uwoyela, nezinyibilikisi. Nokho, ingase ibe sengozini yama-asidi aqinile noma izisekelo emazingeni okushisa aphezulu.
Isebenza kahle ezindaweni ezinokhahlo, iyenze ifaneleke izicelo emkhakheni wezimoto, i-aerospace, kanye nezokwelapha.
•Okungasebenzi:
Ukungasebenzeki kabusha kwe-PEI kanye ne-biocompatibility kuyenza ifanelekele izindawo ezizwelayo ukuthintana, njengezimboni zemithi nezokucubungula ukudla.
5. Izakhiwo Zemishini Emazingeni Okushisa Aphansi
•Ukusebenza Okuhle Kwezinga Lokushisa Eliphansi:
I-PEI igcina amandla ayo emishini nokuzinza kobukhulu ngisho nasezindaweni ezinezinga lokushisa eliphansi, iyenze ifanelekele izinhlelo zokusebenza ezimweni ezingaphansi kweziro ngaphandle kokuqhekeka noma ukulahlekelwa ukuqina.
6. Izakhiwo ze-Optical
•Ukubonisa ngale:
Esinye sezici eziphawulekayo ze-PEI ukubonakala kwayo, okuwusizo ezinhlelweni zokubona njengamalensi, izindawo zokubuka, nemishini yokubona lapho ukubonakala okucacile kubalulekile.
Inezinga lokudlulisa ukukhanya elingaphezu kuka-80% ezingxenyeni ezinezindonga ezincane.
7. Ukumelana neFlame
•Ukuncipha komlilo:
I-PEI ngokwemvelo ayikwazi ukunqanda amalangabi, izicisha ngokwayo lapho ichayeke emalangabini futhi ayiqhubeki ivutha uma umthombo welangabi ususiwe. Ihambisana namazinga ahlukene okumelana nelangabi, okuhlanganisa ne-UL 94 V-0 yokushiswa okuqondile.
Lokhu kwenza i-PEI ilungele izinhlelo zokusebenza zikagesi nezezimoto lapho ukuphepha komlilo kubaluleke kakhulu.
8. Ukucubungula Izici
•Ukubunjwa komjovo kanye nokukhipha:
I-PEI ingacutshungulwa kusetshenziswa amasu avamile we-thermoplastic afana nokubumba umjovo, i-extrusion, kanye ne-thermoforming. Kodwa-ke, ngenxa yezinga eliphezulu lokuncibilika kwayo, imishini ekhethekile iyadingeka ukuphatha amazinga okushisa (imvamisa engaphezu kuka-340°C).
I-PEI ine-viscosity ephezulu futhi yehlisa izinga lokushisa eliphakeme, okwenza kube inselele ukuyicubungula. Kodwa-ke, ukuthuthuka kobuchwepheshe be-polymer kuholele ekuthuthukisweni kwamamaki okulula ukuwacubungula.
9. Ukumelana Nemvelo
•Ukuzinza kwe-UV:
I-PEI imelana nokucekelwa phansi okuvela ekukhanyeni kwe-ultraviolet, igcina izici zayo zomshini lapho ichayeke elangeni noma emithonjeni yokukhanya yokwenziwa. Nokho, ingase ibephuzi ngokuhamba kwesikhathi ngokuchayeka kwe-UV isikhathi eside, okungancishiswa ngokungeza iziqinisi ze-UV.
•Ukumelana Nesimo Sezulu:
I-PEI isebenza kahle ezimeni zangaphandle, imelana nokuwohloka kwesimo sezulu, umswakama, nezinye izici zemvelo.
10. I-Biocompatibility
•Ukusetshenziswa Kwezokwelapha Nemithi:
Ngenxa yokumelana kwayo okuhle kakhulu namakhemikhali, ukuzinza kwe-dimensional, kanye nokungafihli lutho, i-PEI isetshenziswa kakhulu emishinini yezokwelapha, emaphaketheni emithi, nakumadivaysi afakelwayo. Ihlangabezana nezindinganiso ze-FDA zezicelo zokunakekelwa kwezempilo.
Ukusetshenziswa kwe-Polyetherimide (PEI):
I-PEI isetshenziswa ezinhlobonhlobo zezimboni ezidinga izinto ezisebenza kahle kakhulu, njenge:
•I-Aerospace:Izingxenye zesakhiwo, abakaki, nezimpawu okufanele zibekezelele amazinga okushisa aphezulu kanye nokucindezeleka kwemishini.
•Ezezimoto:Izingxenye ezingaphansi kwe-hood njengezixhumi, izindlu, namasistimu kaphethiloli.
•Ezogesi:Ama-insulators kagesi, izixhumi, nezingxenye zikagesi ezisebenza kahle kakhulu.
•Ezokwelapha:Iziqukathi zokuvala inzalo, okokusebenza kokuxilonga, namadivayisi afakelwayo.
•Imboni:Amagiya, ama-bearing, namaphampu asebenza ngaphansi kwengcindezi namazinga okushisa aphezulu.
Isiphetho
I-Polyetherimide (PEI) i-polymer esebenza kahle kakhulu ye-thermoplastic eyaziwa ngokuzinza kwayo okushisayo, amandla emishini, kanye nezakhiwo zokuvala ugesi. Lezi zici ziyenza ibe into efanelekile yohlelo lokusebenza olufunayo ezimbonini ezifana ne-aerospace, ezezimoto, ezokwelashwa, nezogesi, lapho ukwethembeka ezimeni ezimbi kakhulu kubalulekile. Naphezu kwezindleko zayo eziphakeme, ukuguquguquka nokuqina kwe-PEI kuyenza into yokuzikhethela ezinhlelweni zokusebenza zezimboni ezisezingeni eliphezulu.
Isikhathi sokuthumela: Feb-14-2025
