Polyimide, The All - Ardiver ma Poymer FairSies, a hoʻomaka hou nāʻoihana OLID e hoʻopuka ana - ko mākou wahi pono.
I. Overving
Ma keʻano he mea hana kūikawā, ua hoʻohana nuiʻiaʻo Poletimide i nā mokulele,ʻo Aerospace, nā melemele, kaʻaila, hoʻomaʻemaʻe me nā mahinaʻole. ʻO kēia manawa, ke papa inoa nei nā'āina i ka noiʻi, hoʻomohala a me ka hoʻohanaʻana opouelee like me kekahi o nā mea hoʻomaʻamaʻa nui loa ma nā kenekulia ma ka makahiki 21. Poliʻi, ma muli o kāna mau hiʻohiʻona kupaianaha i ka hana a me ka synthesis, inā he mea hoʻohanaʻia, a he mea hana e pili ana i ke akamai. "
ʻO ka lua,ʻo ka hana no ka Polyimide
1 ʻO ka syntheszed ka plymide mai baiphenyl dianhydride a me p - ka phenylenesemane i ka wela o 600 c a he mea nui loa.
2. Hiki i ka polymide keʻano nui loa i ka mahana haʻahaʻa, e like me ka helium wai ma - 269 ° C,ʻaʻole ia he brittle.
3.Poueleloaʻa nā waiwai mechaninincy. ʻO ka ikaika o keʻano o nā plastics i hanaʻia ma luna o 100mpa E like me kahi plainecicing plastit,ʻo ka nui o ka kiʻi elastic he 3 - 4gpa, a hiki i ka fiber ke hōʻea i ka 200gpa. Wahi a nā helu waiwaiʻole,ʻo ka fynthesized e phthalic ayhydride and p -
4.ʻO kekahi mauʻano poliatimide he insoluses i loko o nā mea hoʻokele organik a paʻa i nā maʻi dilite. ʻAʻole kūʻole nāʻano maʻamau i nāʻano hydrolysis. Ua likeʻole kēia pōkole i ka polymide me nā mea'ē aʻe mai nā mea kiʻekiʻe aku. ʻO keʻano ka mea e hiki ai i keʻano o ka mea dianhydride dianhydride a me ka diamine e hoʻihoʻiʻia e Alkanaline hydrolysis. ʻO ka laʻana, no ka kiʻiʻoniʻoni o Kapton, hiki i ka helu hoʻihoʻi ke hōʻea i ka 80% - 90%. Ke hoʻololi nei i keʻano hiki ke kiʻi hou i ka hydrolysis - Nāʻano kūlikeʻole, e like me keʻano he 120 ° C, 500 mau hola.
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6. Ua loaʻa iā PaunyIde ke kū'ē i ka hakakāʻana, aʻo kāna kiʻi kiʻi he ikaika kahi kiʻekiʻe o 90% ma hope o 5 × 109rad wikiwiki wikiwiki.
7.PoueleLoaʻa iāʻoe nā waiwai maikaʻi maikaʻi, me kahi ceclectric i mau maʻamau o 3.4. Ma ka hoʻolaunaʻana i nā maʻi maʻi a iʻole ka hoʻokaʻawaleʻana i nā noanters ea ma polyomelide ma polyimide, hiki ke hoʻemiʻia ka marperlectric e pili ana i kahi 2.5. ʻO ka nalowaleʻo DiectAcetric he 10 - 3, diecelecetic ikaika he 100 - 300kv / mm, guangcheches thermorplas peayutide he 317kv. Noho mau kēia mau waiwai ma kahi kiʻekiʻe kiʻekiʻe ma luna o kahi pālahalaha ākea ākea a me ka laulā pinepine.
8.ʻO Polyimide kahi mea pilikino - Exingureing Polymer me ka nui o ka uahi haʻahaʻa.
9.ʻO Polyimide liʻiliʻi loa i waho i lalo o ka hakahaka kiʻekiʻe loa.
10 Loaʻa i kekahi mau polyomides he biocompatibila maikaʻi, no ka laʻana,ʻaʻole lākou no ka ho'āʻoʻana i ke koko cytototicial.
3. Nā ala lehulehu o Synthesis:
Nui nāʻano likeʻole a me nāʻano o ka payimeke, a ua nui nā ala e hōʻeuʻeu iā ia, no laila hiki ke kohoʻia e like me nā kumu noi likeʻole. ʻO kēiaʻano o ka wikiwiki o Synthesis e paʻakikī nō ia no nā polyers'ē aʻe e loaʻa ai.
1.Poueleʻo ia ka mea nui i luna o nā monibdides dibasic a me nā diamines. Ua huiʻia kēia mau lunorsʻelua me nā mea'ē aʻe he nui nā mea'ē aʻe he nui.ʻO Polinyzimoini i hoʻohālikelikeʻia,ʻo Polybenzimio. He ākea kūponoʻole ke kumu o nā kumuhana. Nui nāʻano o nā dianhydrides a me nā diamines, a me nā polyimides e loaʻa nā mea likeʻole e loaʻa e nā hui likeʻole.
2. Hiki i ka polyhide ke polycondensd i ka mahana haʻahaʻa e ka dianhydride a me ka dmac, e like me keʻano o ke kiʻina Hiki ke hoʻohui pūʻiaʻo ACTIC ACTIC A ACTIARY AMIE CHARYTASTS e hiki ke hoʻohui pūʻia i ka poliamic acid no ka demika demarite a me nā cyclization e loaʻa ai ka pohiki. Hiki i nā maʻi a me ka dianhydride e hoʻouluʻia a me ka polycondensed i kahi pā kiʻekiʻe, e like me ka pohō pohō i hoʻokahi hana. Eia kekahi, hiki ke loaʻa iā Polemide i ka hopena o ka hopena o ka acibas acid estiver a me diamine; Hiki iā ia ke hoʻololiʻia mai polyamic acid e polyisoimide mua, a laila e nininiʻia. ʻO kēia mau hana e lawe mai i nā mea a pau e hōʻoluʻolu i ka hoʻoiliʻana. Ua kapaʻia ka mea kahiko i keʻano PMR, hiki ke loaʻa i ka haole haʻahaʻa, kiʻekiʻe ka palekana o me ke kumumanaʻo i ka hanaʻana o nā mea maʻamau; Hoʻonui ka hope i mea e hoʻomaikaʻi ai i ka pānaʻi,ʻaʻohe haʻahaʻa haʻahaʻa - nā mea i hoʻopiliʻia i ke kaʻina hoʻololi.
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4.ʻO Polycondensitation o Dianhydride Hele pololei.
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6. E hoʻohana i ka hui o ka carboxyl i loko o ka polymide e lawe i nā hui a iʻole ka hoʻohanaʻana i nā mea pôpeku.
7.ʻO ke kaʻina hana maʻamau o ka synthesizing polymideʻaʻole e hana i nā paʻakai ma loko
8.ʻO ka dianhydride a me ka diamine e like me nā monom e maʻalahi ke maʻalahi i lalo o ka sublimate ma lalo o ka hakahaka kiʻekiʻe, no laila he mea maʻalahi ia keʻanopouelekiʻi ma nā mea hana hana,ʻoi aku nā mea hana me nā papa uneven, e ka waihona vapor.
Post Time: Feb - 06 - 2023