Polyetherimide, kapena PEI, ndi polima yotentha kwambiri ya thermoplastic yomwe imadziwika chifukwa cha makina ake apadera, matenthedwe, komanso magetsi. Ndi polyimide yamphamvu kwambiri, yolimba kwambiri yonunkhira bwino yokhala ndi kukhazikika kwamafuta. Pansipa pali zina zofunika za PEI:
Chidule Table of Key Properties ofPolyetherimide (PEI)
| Katundu | Tsatanetsatane |
|---|---|
| Kutentha kwa Glass Transition (Tg) | ~217°C (423°F) |
| Kutentha kwapang'onopang'ono (HDT) | ~215–220°C (419–428°F) |
| Kulimba kwamakokedwe | 80-100 MPa (zimasiyana ndi kalasi) |
| Flexural Mphamvu | Zapamwamba, zoyenera pazigawo zamapangidwe |
| Kukaniza kwa Impact | Wapakati |
| Magetsi Insulation | Zabwino kwambiri, zamphamvu kwambiri za dielectric |
| Kukaniza Chemical | Kugonjetsedwa ndi zidulo, maziko, mafuta, ndi zosungunulira |
| Kukaniza Moto | Kuzimitsa, UL 94 V-0 mlingo |
| Kukaniza kwa UV | Zabwino, koma zimatha kukhala zachikasu pakapita nthawi popanda zolimbitsa thupi za UV |
| Kuwonekera | Pamwamba, nthawi zambiri kuposa 80% kufala kwa kuwala |
| Biocompatibility | Zoyenera kugwiritsa ntchito zamankhwala, FDA imagwirizana |
1. Thermal Properties
•Kulimbana ndi Kutentha:
PEI ili ndi kutentha kochititsa chidwi (HDT) pakati pa 215 ° C ndi 220 ° C (419 ° F-428 ° F), yomwe imalola kuti ipirire kutentha kwambiri popanda kusintha kwakukulu. Izi zimapangitsa kuti ikhale yabwino kwa mapulogalamu omwe amafunikira kukana kutentha kwambiri, monga m'mafakitale amagalimoto ndi ndege.
Imasunga mphamvu ndi kukhazikika kwa mawonekedwe ngakhale pa kutentha kokwera.
•Kutentha kwa Glass Transition (Tg):
Ndi Tg yozungulira 217 ° C (423 ° F), PEI imasungabe kukhulupirika kwake ngakhale pa kutentha kwambiri kuposa momwe mapulasitiki ambiri amagwirira ntchito.
•Low Coefficient of Thermal Expansion (CTE):
PEI ili ndi CTE yotsika kwambiri, kutanthauza kuti imasinthasintha pang'ono ngati kutentha kumasinthasintha, kumapangitsa kuti ikhale yokhazikika komanso yodalirika pamagawo olondola.
2. Katundu Wamakina
•Kulimba Kwambiri ndi Kuuma:
PEI imapereka zida zapadera zamakina, monga kulimba kwamphamvu kwambiri, mphamvu zosunthika, komanso kulimba, zomwe zimakhalabe ngakhale kutentha kwambiri. Izi zimapangitsa kuti zikhale zoyenera pazigawo zamapangidwe m'malo ovuta.
Mphamvu zake zokhazikika zimakhala kuyambira 80 mpaka 100 MPa, kutengera kalasi.
•Kukanika kwa Impact:
Ngakhale PEI ndi yamphamvu pamakina, imakhala ndi kukana pang'ono poyerekeza ndi ma engineering thermoplastics ena. Imatha kunyamula katundu wambiri koma imatha kusweka kwambiri pazifukwa zina.
•Kukhazikika Kwabwino Kwambiri:
Magawo a PEI amawonetsa kukhazikika bwino pansi pa katundu wamakina, ndikupangitsa kuti ikhale yoyenera kulolerana zolimba monga magiya olondola, ma fani, ndi zolumikizira zamagetsi.
3. Zida Zamagetsi
•Ubwino wa Insulation wa Magetsi:
PEI ndi insulator yabwino kwambiri yamagetsi, yopatsa mphamvu ya dielectric yayikulu komanso kutsika kwamagetsi kwamagetsi. Izi zimapangitsa kuti ikhale yabwino pamagetsi ndi zamagetsi, monga ma board board, zolumikizira, ndi zolumikizira.
•Kutayika Kwambiri kwa Dielectric:
Imawonetsa kuchepa kwa dielectric, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito magetsi othamanga kwambiri.
4. Kukana kwa Chemical
•Kukaniza Kwabwino kwa Chemical:
PEI imatsutsa mankhwala osiyanasiyana, kuphatikizapo ma asidi, maziko, mafuta, ndi zosungunulira. Komabe, ikhoza kukhala pachiwopsezo cha ma asidi amphamvu kapena maziko pa kutentha kwakukulu.
Imachita bwino m'malo ovuta, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'magawo a magalimoto, ndege, ndi zamankhwala.
•Zosasintha:
PEI's non-reactivity and biocompatibility imapangitsa kuti ikhale yoyenera m'malo osamva kukhudzana, monga mafakitale opanga mankhwala ndi zakudya.
5. Katundu Wamakina Pakutentha Kochepa
•Kuchita Kwabwino Kotentha Kwambiri:
PEI imasungabe mphamvu zamakina ndi kukhazikika kwake ngakhale m'malo otentha kwambiri, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito pazigawo zapansi pa zero popanda kusweka kapena kutaya kulimba.
6. Optical Properties
•Kuwonekera:
Chimodzi mwazinthu zodziwika bwino za PEI ndikuwonetsetsa kwake, komwe kumakhala kothandiza pakugwiritsa ntchito mawonekedwe monga magalasi, mawonedwe, ndi zida zowonera komwe kuoneka bwino ndikofunikira.
Ili ndi kuchuluka kwa kufalikira kopitilira 80% pazigawo zokhala ndi mipanda yopyapyala.
7. Kukaniza Moto
•Kuchedwa kwa Flame:
PEI mwachibadwa imakhala yosagwira moto, yozimitsa yokha ikayatsidwa ndi malawi ndipo sipitiriza kuyaka pamene gwero lamoto lichotsedwa. Imagwirizana ndi mitundu yosiyanasiyana yokana moto, kuphatikiza UL 94 V-0 pakuwotcha koyima.
Izi zimapangitsa PEI kukhala yoyenera kugwiritsa ntchito magetsi ndi magalimoto pomwe chitetezo chamoto chimakhala chofunikira.
8. Kukonza Makhalidwe
•Jekiseni Kumangira ndi Extrusion:
PEI imatha kukonzedwa pogwiritsa ntchito njira wamba za thermoplastic monga jekeseni, extrusion, ndi thermoforming. Komabe, chifukwa cha kusungunuka kwake kwakukulu, zida zapadera zimafunikira kuti zizitha kutentha (nthawi zambiri kuposa 340 ° C).
PEI ili ndi mamasukidwe apamwamba kwambiri ndipo imawononga kutentha kwambiri, zomwe zimapangitsa kuti zikhale zovuta kukonza. Komabe, kupita patsogolo kwaukadaulo wa polima kwapangitsa kuti magiredi owonjezera oyenda azikhala osavuta kukonza.
9. Kukaniza chilengedwe
•Kukhazikika kwa UV:
PEI imakana kuwonongeka kwa kuwala kwa ultraviolet, kusunga mawonekedwe ake opangidwa ndi kuwala kwa dzuwa kapena magwero opangira magetsi. Komabe, imatha kukhala yachikasu pakapita nthawi ndikuwonetsa kwanthawi yayitali kwa UV, komwe kumatha kuchepetsedwa powonjezera zolimbitsa thupi za UV.
•Kukaniza Nyengo:
PEI imagwira bwino ntchito kunja, kukana kuwonongeka kwa nyengo, chinyezi, ndi zina zachilengedwe.
10. Biocompatibility
•Kugwiritsa Ntchito Pachipatala ndi Pamankhwala:
Chifukwa cha kukana kwake kwamankhwala, kukhazikika kwa mawonekedwe, komanso kuwonekera, PEI imagwiritsidwa ntchito kwambiri pazida zamankhwala, zopaka zamankhwala, ndi zida zoyika. Imakwaniritsa miyezo ya FDA pamagwiritsidwe azaumoyo.
Kugwiritsa ntchito Polyetherimide (PEI):
PEI imagwiritsidwa ntchito m'mafakitale osiyanasiyana omwe amafunikira zida zogwira ntchito kwambiri, monga:
•Zamlengalenga:Zida zamapangidwe, mabulaketi, ndi zosindikizira zomwe ziyenera kupirira kutentha kwambiri komanso kupsinjika kwamakina.
•Zagalimoto:Zida zapansi pa-hood monga zolumikizira, nyumba, ndi makina amafuta.
•Zamagetsi:Ma insulators amagetsi, zolumikizira, ndi zida zamagetsi zogwira ntchito kwambiri.
•Zachipatala:Zotengera zotsekereza, zida zoyezera matenda, ndi zida zolumikizidwa.
•Industrial:Magiya, ma bearing, ndi mapampu omwe amagwira ntchito pansi pa kupsinjika ndi kutentha kwambiri.
Mapeto
Polyetherimide (PEI) ndi polima yochita bwino kwambiri ya thermoplastic yomwe imadziwika ndi kukhazikika kwake kwamatenthedwe, mphamvu zamakina, komanso mphamvu zamagetsi zamagetsi. Izi zimapangitsa kukhala chinthu choyenera kugwiritsa ntchito movutikira m'mafakitale monga zakuthambo, zamagalimoto, zamankhwala, ndi zamagetsi, komwe kudalirika pazovuta kwambiri ndikofunikira. Ngakhale mtengo wake ndi wokwera, kusinthasintha kwa PEI komanso kulimba kwake kumapangitsa kuti ikhale chinthu chosankhidwa pamafakitale apamwamba kwambiri.
Nthawi yotumiza: Feb-14-2025
