I-Polyetherimide, okanye i-PEI, yipolymer ye-thermoplastic ephezulu esebenza kakuhle eyaziwayo ngomatshini wayo okhethekileyo, we-thermal kunye nombane. Yi-polyimide eqholiweyo ephezulu, enokuqina okuphezulu kunye nozinzo oluhle kakhulu lwe-thermal. Apha ngezantsi kukho iimpawu eziphambili zePEI:
IsiShwankathelo seePropati eziPhambili zePolyetherimide (PEI)
| Ipropati | Iinkcukacha |
|---|---|
| Ubushushu beGass Transition (Tg) | ~217°C (423°F) |
| Ubushushu obuguquguqukayo bubushushu (HDT) | ~215–220°C (419–428°F) |
| Tensile strength | 80–100 MPa (iyahluka ngokwamanqanaba) |
| Amandla e-Flexural | Iphezulu, ilungele amacandelo esakhiwo |
| Ukuchasa impembelelo | Phakathi |
| Ukugqunywa koMbane | Okugqwesileyo, amandla aphezulu e-dielectric |
| Ukumelana nemichiza | Ukumelana neeasidi, iziseko, ioyile, kunye nezinyibilikisi |
| Ukumelana nedangatye | Ukuzicima, ukulinganisa kwe-UL 94 V-0 |
| Ukumelana ne-UV | Ilungile, kodwa inokutyheli ngokuhamba kwexesha ngaphandle kwezizinzi ze-UV |
| Ukungafihli | Phezulu, ngokuqhelekileyo ngaphezu kwe-80% yokuhanjiswa kokukhanya |
| Biocompatibility | Ifanelekile kwizicelo zonyango, i-FDA iyahambelana |
1. Iipropati zoThermal
•Ukumelana nobushushu:
I-PEI ineqondo lobushushu elimangalisayo lokuphambuka (HDT) phakathi kwe-215 ° C kunye ne-220 ° C (419 ° F-428 ° F), eyivumela ukuba imelane namaqondo aphezulu ngaphandle kokuguqulwa okubalulekileyo. Oku kuyenza ilungele usetyenziso olufuna ukumelana nobushushu obuphezulu, njengakwimizi-mveliso yeemoto kunye ne-aerospace.
Igcina amandla kunye nokuzinza kwe-dimensional nakwiqondo lobushushu eliphakamileyo.
•Ubushushu beGass Transition (Tg):
Nge-Tg ejikeleze i-217 ° C (423 ° F), i-PEI igcina ingqibelelo yesakhiwo nakumaqondo obushushu angaphezulu koluhlu oluqhelekileyo lokusebenza lweeplastiki ezininzi.
•I-Coefficient ePhantsi yoKwandiswa kweThermal (CTE):
I-PEI ine-CTE ephantsi kakhulu, oku kuthetha ukuba ifumana utshintsho oluncinci oluncinci njengoko amaqondo obushushu eguquguquka, iyenza izinze kakhulu kwaye ithembekile kwiindawo ezichanekileyo.
2. IiPropati zoomatshini
•Amandla aphezulu kunye nokuqina:
I-PEI ibonelela ngeepropathi ezikhethekileyo zoomatshini, ezinje ngokuqina okuphezulu, ukomelela okuguquguqukayo, kunye nobungqongqo, obuhlala buqinile nakumaqondo obushushu aphezulu. Oku kuyenza ilungele amacandelo olwakhiwo kwiindawo ezibango.
Amandla ayo okuqina aqala ukusuka kwi-80 ukuya kwi-100 MPa, kuxhomekeke kwibakala.
•Ukuchasa impembelelo:
Ngelixa i-PEI yomelele ngoomatshini, inokumelana nempembelelo ephakathi xa ithelekiswa nezinye ii-thermoplastics zobunjineli. Iyakwazi ukusingatha imithwalo emikhulu kodwa ithandeka ngakumbi kwi-brittle fracture phantsi kweemeko ezithile.
•Uzinzo lweDimensional olugqwesileyo:
Amalungu e-PEI abonisa uzinzo olugqwesileyo phantsi kwemithwalo yoomatshini, nto leyo eyenza ukuba ilungele ukunyamezela izicelo ezifana neegiya ezichanekileyo, iibheringi kunye nezihlanganisi zombane.
3. Iipropati zoMbane
•Ukufakelwa koMbane okuLungileyo:
I-PEI sisithinteli sombane esigqwesileyo, esibonelela ngamandla aphezulu e-dielectric kunye nokuhanjiswa kombane okuphantsi. Oku kuyenza ilungele ukusetyenziswa kombane kunye ne-elektroniki, njengeebhodi zeesekethe, izihlanganisi, kunye nezithinteli.
•Ilahleko yeDielectric ephantsi:
Ibonisa ilahleko ye-dielectric ephantsi, iyenza ifaneleke kwizicelo zombane ze-high-frequency.
4. Ukumelana neeKhemikhali
•Ukuxhathisa okuLungileyo kwiMichiza:
I-PEI ixhathisa iindidi ezininzi zeekhemikhali, kuquka i-asidi, iziseko, i-oyile kunye nezinyibilikisi. Nangona kunjalo, inokuba sesichengeni kwiiasidi ezinamandla okanye iziseko kumaqondo obushushu aphezulu.
Isebenza kakuhle kwiindawo ezirhabaxa, iyenza ilungele usetyenziso kumacandelo eemoto, i-aerospace, kunye nezonyango.
•Ayisebenzi:
I-PEI's non-reactivity kunye ne-biocompatibility iyenza ilungele iindawo ezisingqongileyo ezibuthathaka, ezifana nemizi mveliso yamayeza kunye neyokwenza ukutya.
5. IiPropati zoomatshini kumaqondo obushushu aphantsi
•Ukusebenza Okulungileyo koBubushushu obuphantsi:
I-PEI igcina amandla ayo omatshini kunye nokuzinza kwe-dimensional nakwiindawo eziphantsi kweqondo lokushisa, iyenza ifanelekele usetyenziso kwiimeko ezingaphantsi kwe-zero ngaphandle kokuqhekeka okanye ukulahlekelwa lukhuni.
6. IiPropati zeOptical
•Ukungafihli:
Enye yezinto eziphawulekayo ze-PEI kukungafihli, okuluncedo kwizicelo ze-optical ezifana neelensi, ii-viewports, kunye nezixhobo ezibonakalayo apho ukubonakala okucacileyo kubalulekile.
Inezinga losulelo olukhanyayo olungaphezulu kwe-80% kumacandelo anodonga olucekethekileyo.
7. Ukumelana nedangatye
•UkuBamba idangatye:
I-PEI ngokwemvelo ayinamlilo, iyazicima xa ibekwe emadangatyeni kwaye ayiqhubeki ukuvutha xa umthombo wedangatye ususiwe. Ihambelana nemigangatho eyahlukeneyo yokumelana nomlilo, kuquka i-UL 94 V-0 yokutshisa ngokuthe nkqo.
Oku kwenza i-PEI ifaneleke kwizicelo zombane kunye neemoto apho ukhuseleko lomlilo luphambili.
8. IiMpawu zokuLungiselela
•Ukubunjwa kwesitofu kunye nokuKhutshwa:
I-PEI inokucutshungulwa kusetyenziswa iindlela eziqhelekileyo ze-thermoplastic ezifana nokubumba inaliti, i-extrusion, kunye ne-thermoforming. Nangona kunjalo, ngenxa yendawo ephezulu yokunyibilika kwayo, izixhobo ezikhethekileyo ziyafuneka ukuphatha amaqondo obushushu (ngokuqhelekileyo angaphezu kwama-340 ° C).
I-PEI ine-viscosity ephezulu kwaye iyancipha kumaqondo okushisa aphakamileyo, okwenza kube nzima ukuyiqhuba. Nangona kunjalo, ukuqhubela phambili kwitekhnoloji yepolymer kukhokelele kumabanga aphuculweyo ekulula ukuwenza.
9. Ukunyangwa kokusingqongileyo
•Uzinzo lweUV:
I-PEI ixhathisa ukuthotywa kokukhanya kwe-ultraviolet, igcina iimpawu zayo zemishini xa ibonakaliswe ekukhanyeni kwelanga okanye kwimithombo yokukhanya eyenziweyo. Nangona kunjalo, inokuba tyheli ngokuhamba kwexesha kunye nokuvezwa ixesha elide kwe-UV, enokuthi incitshiswe ngokongeza izizinzi ze-UV.
•Ukuxhathisa iMozulu:
I-PEI iqhuba kakuhle kwiimeko zangaphandle, ukumelana nokuthotywa kwemozulu, ukufuma, kunye nezinye izinto zokusingqongileyo.
10. Biocompatibility
•Ukusetyenziswa kwezonyango kunye namayeza:
Enkosi ngokumelana kwayo neekhemikhali okugqwesileyo, uzinzo lwe-dimensional, kunye nokungafihli, i-PEI isetyenziswa kakhulu kwizixhobo zonyango, ukupakishwa kwamayeza, kunye nezixhobo ezifakelwayo. Idibana nemigangatho ye-FDA kwizicelo zokhathalelo lwempilo.
Usetyenziso lwePolyetherimide (PEI):
I-PEI isetyenziswa kuluhlu olubanzi lwamashishini afuna izixhobo zokusebenza eziphezulu, ezinje:
•I-Aerospace:Amalungu esakhiwo, izibiyeli, kunye netywina ekufuneka zinyamezele amaqondo obushushu aphezulu kunye noxinzelelo lomatshini.
•Iimoto:Amacandelo angaphantsi kwe-hood afana nezihlanganisi, izindlu, kunye neenkqubo zamafutha.
•I-Electronics:Izithinteli zombane, izihlanganisi, kunye nezixhobo zombane ezisebenza kakhulu.
•Ezonyango:Izikhongozeli zokuvala inzala, izixhobo zokuxilonga, kunye nezixhobo ezifakelwayo.
•Ishishini:Iigiya, iibheringi, kunye neepompo ezisebenza phantsi koxinzelelo kunye namaqondo obushushu agqithisileyo.
Ukuqukumbela
I-Polyetherimide (PEI) yipolymer esebenza kakuhle kakhulu ye-thermoplastic eyaziwa ngokugqwesa ukuzinza kwe-thermal, amandla omatshini, kunye neempawu zokugquma umbane. Ezi mpawu ziyenza ibe yimathiriyeli efanelekileyo yokufuna izicelo kumashishini afana ne-aerospace, iimoto, ezonyango, kunye ne-electronics, apho ukuthembeka kwiimeko ezinzima kubalulekile. Ngaphandle kweendleko eziphezulu, ukuguquguquka kwezinto ezininzi kunye nokuqina kwe-PEI kuyenza ibe yinto ekhethwayo kwizicelo eziphezulu zemizi-mveliso.
Ixesha lokuposa: Feb-14-2025
