Nā waiwai o ka Polyetherimide (PEI)

ʻO Polyetherimide, a i ʻole PEI, he polymer thermoplastic hana kiʻekiʻe i ʻike ʻia no kāna mau mea mechanical, thermal, a me nā mea uila. He polyimide aromatic ikaika kiʻekiʻe, rigidity me ka paʻa wela maikaʻi. Aia ma lalo iho kekahi mau waiwai nui o ka PEI:

Papa Hōʻuluʻulu o nā mea nui oPolyetherimide (PEI)

1. Na waiwai wela

•Palena wela:
Loaʻa i ka PEI kahi mahana hoʻoheheʻe wela (HDT) ma waena o 215°C a me 220°C (419°F–428°F), hiki iā ia ke kū i nā wela kiʻekiʻe me ka ʻole o ka deformation nui. He mea kūpono kēia no nā noi e koi ana i ke kūpaʻa wela kiʻekiʻe, e like me nā ʻoihana kaʻa a me nā aerospace.
Mālama ʻo ia i ka ikaika a me ke kūpaʻa dimensional ʻoiai me nā mahana kiʻekiʻe.

•Ke aniani hoʻololi wela (Tg):
Me kahi Tg ma kahi o 217°C (423°F), mālama ʻo PEI i kona kūpaʻa hoʻonohonoho ʻana a hiki i nā mahana ma mua o ka pae hana maʻamau o ka hapa nui o nā plastics.

•Ka helu haʻahaʻa o ka hoʻonui wela (CTE):
He CTE haʻahaʻa loa ka PEI, ʻo ia hoʻi, loaʻa iā ia ka liʻiliʻi liʻiliʻi o ka hoʻololi ʻana i ke ʻano o ka piʻi ʻana o ka mahana, e paʻa loa a hilinaʻi no nā ʻāpana kikoʻī.

2. Pono Mechanical

•Ka ikaika a me ka ʻoʻoleʻa:
Hāʻawi ʻo PEI i nā waiwai mechanical ʻē aʻe, e like me ka ikaika tensile kiʻekiʻe, ka ikaika flexural, a me ka rigidity, e paʻa mau ana i nā wela kiʻekiʻe. He kūpono kēia no nā ʻāpana hoʻolālā i nā wahi koi.
ʻO kona ikaika tensile maʻamau mai 80 a 100 MPa, ma muli o ka papa.

•Ke kū'ē i ka hopena:
ʻOiai ka ikaika o ka PEI, he haʻahaʻa kona hopena i ka hoʻohālikelike ʻia me nā thermoplastics ʻenehana ʻē aʻe. Hiki iā ia ke mālama i nā ukana nui akā ʻoi aku ka maʻalahi o ka haki ʻana ma lalo o kekahi mau kūlana.

•ʻOi loa ka paʻa ʻana:
Hōʻike nā ʻāpana PEI i ke kūpaʻa maikaʻi loa ma lalo o nā ukana mechanical, kūpono ia no nā noi hoʻomanawanui paʻa e like me nā mīkini pololei, nā bearings, a me nā mea hoʻohui uila.

3. Pono Uila

•Hoʻopili uila maikaʻi:
He insulator uila maikaʻi loa ʻo PEI, e hāʻawi ana i ka ikaika dielectric kiʻekiʻe a me ka conductivity uila haʻahaʻa. He mea kūpono kēia no nā noi uila a me nā uila, e like me nā papa kaapuni, nā mea hoʻohui, a me nā insulators.

•Pohō Dielectric Haʻahaʻa:
Hōʻike ia i ka poho dielectric haʻahaʻa, kūpono ia no nā noi uila kiʻekiʻe.

4. Kū'ē Kemika

•Kū'ē Kemika maikaʻi:
Kūʻē ʻo PEI i nā ʻano kemika like ʻole, me nā waikawa, nā kumu, nā aila, a me nā mea hoʻoheheʻe. Eia nō naʻe, hiki ke pilikia i nā ʻakika ikaika a i ʻole nā ​​​​base ma nā wela kiʻekiʻe.
Hana maikaʻi ia i nā wahi paʻakikī, kūpono ia no nā noi i ka ʻoihana automotive, aerospace, a me nā lāʻau lapaʻau.

•ʻAʻole hoʻokō:
ʻO ka non-reactivity a me ka biocompatibility o PEI e kūpono ia no nā wahi pili pili, e like me ka lāʻau lapaʻau a me nā ʻoihana hana meaʻai.

5. Na Pono Mechanical i na Mahana Haahaa

•Maikaʻi Haʻahaʻa Mahana Hana Hana:
Hoʻomau ka PEI i kona ikaika mechanical a me kona kūpaʻa dimensional ʻoiai ma nā wahi haʻahaʻa haʻahaʻa, kūpono ia no nā noi i nā kūlana sub-zero me ka ʻole o ka haki ʻana a i ʻole ka nalowale ʻana o ka rigidity.

6. Na Waiwai Optical

•Mākaʻikaʻi:
ʻO kekahi o nā hiʻohiʻona koʻikoʻi o ka PEI, ʻo ia ka ʻike maka, he mea pono ia i nā noi optical e like me nā lens, viewports, a me nā lako optical kahi e pono ai ka ʻike.
Loaʻa iā ia ka māmā māmā o ka lawe ʻana ma luna o 80% no nā ʻāpana ʻāpana lahilahi.

7. Paʻa ahi

•Hoʻopaʻa ahi:
ʻO ka PEI he mea pale i ka lapalapa ahi, hoʻopau iā ia iho ke ʻike ʻia i ke ahi a ʻaʻole hoʻomau i ka ʻā i ka wā e wehe ʻia ai ke kumu lapalapa. Hoʻopili ia i nā kūlana pale ahi like ʻole, me ka UL 94 V-0 no ke ahi kū kū.
ʻO kēia ka mea e kūpono ai ka PEI no nā noi uila a me nā kaʻa kaʻa kahi mea nui o ka palekana ahi.

8. Nā ʻano hana

•Injection Molding a Extrusion:
Hiki ke hana ʻia ka PEI me ka hoʻohana ʻana i nā ʻenehana thermoplastic maʻamau e like me ka injection molding, extrusion, a me ka thermoforming. Eia nō naʻe, ma muli o kona wahi heheʻe kiʻekiʻe, pono nā mea hana kūikawā no ka mālama ʻana i nā mahana (maʻamau ma luna o 340 ° C).
He viscosity kiʻekiʻe ka PEI a hoʻohaʻahaʻa i nā mahana kiʻekiʻe, e paʻakikī ai ka hana. Eia nō naʻe, ʻo ka holomua o ka ʻenehana polymer ua alakaʻi i nā māka hoʻonui kahe i maʻalahi ke hana.

9. Kū'ē Kūlohelohe

•Paʻa UV:
Kū'ē ka PEI i ka hoʻohaʻahaʻaʻana mai ke kukui ultraviolet, e mālama ana i kona mau mea mechanical ke hōʻikeʻia i ka lā a iʻole nā ​​kumu kukui hana. Eia nō naʻe, hiki ke melemele i ka manawa me ka hoʻolaha ʻana o UV lōʻihi, hiki ke hoʻemi ʻia me ka hoʻohui ʻana i nā UV stabilizers.

•Kūleʻa Lewa:
Hana maikaʻi ʻo PEI i nā kūlana o waho, e pale ana i ka hoʻohaʻahaʻa ʻana mai ka wā, ka haʻahaʻa, a me nā mea ʻē aʻe.

10. Biocompatibility

•Hoʻohana Lapaʻau a Lapaʻau:
Mahalo i kona kūpaʻa kemika maikaʻi loa, dimensional stability, a me ka ʻike, hoʻohana nui ʻia ʻo PEI i nā lāʻau lapaʻau, nā lāʻau lapaʻau, a me nā mea implantable. Hoʻokō ia i nā kūlana FDA no nā noi mālama olakino.

Nā noi no ka Polyetherimide (PEI):
Hoʻohana ʻia ʻo PEI i kahi ākea o nā ʻoihana e koi ana i nā mea hana kiʻekiʻe, e like me:
•Aerospace:ʻO nā ʻāpana kūkulu, nā pale, a me nā sila e hoʻomanawanui i nā wela kiʻekiʻe a me ke koʻikoʻi mechanical.
•Kaʻa:ʻO nā mea ma lalo o ka puʻu e like me nā mea hoʻohui, nā hale, a me nā ʻōnaehana wahie.
•Mea uila:ʻO nā insulators uila, nā mea hoʻohui, a me nā ʻāpana uila hana kiʻekiʻe.
•Lapaʻau:ʻO nā ipu sterilization, nā mea hana diagnostic, a me nā mea implantable.
•ʻOihana:ʻO nā Gears, Bearings, a me nā pumps e hana ana ma lalo o ke koʻikoʻi a me nā wela wela.

Ka hopena

ʻO ka Polyetherimide (PEI) kahi polymer thermoplastic kiʻekiʻe i ʻike ʻia no kona kūpaʻa wela maikaʻi, ikaika mechanical, a me nā waiwai insulation uila. ʻO kēia mau hiʻohiʻona e lilo ia i mea kūpono no ka koi ʻana i nā noi i nā ʻoihana e like me ka aerospace, automotive, medical, and electronics, kahi e pono ai ka hilinaʻi i nā kūlana koʻikoʻi. ʻOiai ke kumukūʻai kiʻekiʻe, ʻo ka versatility a me ka lōʻihi o ka PEI e lilo ia i mea koho no nā noi ʻoihana kiʻekiʻe.