polymide

uyarnna prakadanamulla plaastikkinte vibhaagathil pedunna imid grouppukal adangiya oru polymeraanu polymide (chilappol paii ennu churukkatthil). uyarnna taapa-prathirodhasheshiyulla polymideukal parukkan jaiva vasthukkal aavashyappedunna rolukalil vaividhyamaarnna prayogangal aasvadikkunnu, udha.jii. uyarnna thaapanila indhana cellukal, pradarshanangal, vividha sainika rolukal. pyromelitic dynhydride 4,4 '-ooksidiyaanilin ghaneebhavichu uthppaadippikkunna kapttan oru classic polymideanu.
charithram.
1908ll bogart rensha chernnaanu aadyathe polymide kandethiyathu. 4-amino fathalic unhydride choodaakkumbol urukukayillennum uyarnna tanmatra bharamullah polymide roopappedumbol vellam purathuvidunnuvennum avar kandethi. diaminukalum tetra aasidukalum allengil diaminukalum diasidukalum/daisttarukalum urukki eddu ward robinson chernnaanu aadyathe semialifatic polymide thayyarakkiyathu.
ennirunnaalum, ganyamaaya vaanijya praadhaanyamulla aadyathe polymide-kapttan-1950-kalil dupondile thozhilaallikal pioneer cheythu, avar layikkunna polymer mungami ulkkollunna uyarnna tanmatra bharamullah polymidinte samanvayathinaayi oru vijayakaramaya maargam vikasippichu. innuvare eee paatha mikka polymideukaludeyum ulppaadanathinulla praadhamika paathayaayi thudarunnu. 1955 muthal polymideukal vanthothil uthppaadippikkappedunnu. polymideukal vividha vipulamaaya pusthakangalum avalokana lekhanangalum ulkkollunnu.
vargeekaranam.
avayude pradhana shringalayude ghadana anusarichu, polymideukal ivayaayirikkaam
pradhana shringalakal thammilulla edapedalukalude tharam anusarichu, polymideukal ivayaayirikkaam
synthesis.
polymideukal thayyarakkan niravadhi reethikal saadhyamaan, avayil
oru poliyo (amidicocarboxylic assid) aadyam thayyarakkunna rund gattangalulla oru reethiyiloodeyo allengil nerittu oru ghattam kondo oru diamine, dynhydride ennivayude polymerisation nadatthaam. polymide sinthasisinaayi ettavum vyaapakamaayi upayogikkunna prakriyayaan rund gattangalulla reethi. aadyam layikkunna oru poolii (amideocarboxylic assid) (2) thayyarakkunnu, ithu polymydilekkulla (3) randaamathe ghattathil kooduthal prosess cheytha sesham cyclise cheiyunnu. anthima polymideukal avayude sugandha ghadana kaaranam mikka kesukalilum layikkathathum layikkathathumaayathinaal rund gattangalulla prakriya aavasyamaanu.
pyromellitic dynhydride, bensoquinonetretra carboxylic dynhydride, naftaleen tetra carboxylic dynhydride enniva eee vasthukkalude mungamikalaayi upayogikkunna dianhydrideukalil ulppedunnu. 4, 4 '-diaminodifenyl eedhar (dap), mettaa-fenylenediamine (emm. dii. eiii), 3,3'-diaminodefenylmethain ennivayaanu saadhaarana diamine nirmmaana blokkukal. eee vasthukkalude bhouthikavum prathyekichu samskarana gunangalum krameekarikkunnathin noorukanakkinu diaminukalum dianhydrideukalum parishodhichittundu. eee vasthukkal layikkathathum planner subunitukal thammilulla charge-transfer edapedalukalil ninnu undaakunna uyarnna mriduvaaya thaapanilayullathumaan.
vishakalanam.
ir spectroscopy vazhi immedisation prathikaranam pinthudaraanaakum. 3400 muthal 2700 centimeter −1 (ooo stretch), ~ 1720,1660 (amide sii = oo), ~ 1535 centimeter −1 (sii-enn stretch) ennivayil poolii (amik assid) yude agiranam cheiyunna baandukal aprathyakshamaakunnathaan prathikarana samayat ir spektrathinte savisheshatha. athesamayam, ~ 1780 (c = oamm), ~ 1720 (c = o symm), ~ 1360 (c-n stretch), ~ 1160,745 cm−1 (imid ring deformation) ennivayil swabhaavasavisheshathayulla imid baandukalude roopam nireekshikkaan kazhiyum.polymide, carbonised polymide, graphitised polymide ennivayude vishadamaaya vishakalanangal report cheythittundu.
swathukkal.
thermosetting polymideukal taapa sthiratha, nalla raasa prathirodham, mikacha mechanical gunangal, savisheshamaaya ooranchu/manja niram ennivaykku perukettathaanu. graafait allengil glass fiber shakthippeduthalukalumaayi samyojippicha polymideukalkku flexeral shakthiyum flexeral moduliyum undu. thermosett polymer matricks polymideukal valare kuranja creep uyarnna tensile shakthiyum prakadippikkunnu. thaapanila vare thudarchayaayi upayogikkumbozhum kuranja samayathekkulla yaathrakalkkum eee gunangal nilanirthunnu. mould cheytha polymide bhagangalkkum laminettukalkkum valare nalla taapa prathirodhamund. atharam bhaagangaludeyum laminettukaludeyum saadhaarana pravartthana thaapanila cryogenic muthal athil kooduthal vareyaanu. polymideukal antharleenamaayi jwala prathirodhikkunnavayaane avaa saadhaaranayaayi jwala prathirodhikkunnavayumaayi kalarthendathilla. mikkavayum vii. tii. emm-0 nte all rating vahikkunnu. polymide laaminettukalkk 400 manikkoor aayussil oru flexeral shakti undu.
hydrocarbonukal, esttarukal, eetharukal, alcoholeukal, fronukal ennivayulppede saadhaaranayaayi upayogikkunna laayakangalum ennakalum saadhaarana polymide bhaagangale baadikkunnilla. avaa durbalamaaya aasidukale prathirodhikkunnundena kshaaramo ajaiva aasidukalo adangiya parithasthithikalil upayogikkaan shupaarsha cheiyunnilla. sii. pii. 1, corin ex. ell. ezz thudangiya chila polymideukal layikkunnavayakukayum uyarnna opttikkal vyakthatha prakadippikkukayum cheiyunnu. layikkunna gunangal spray, kuranja thaapanila rogashanti prayogangal ennivaykku avaye sahayikkunnu.
aaplikkeshanukal.
insulation, paasiveshan philimukal.
polymide vasthukkal bharam kuranjathum vazhakkamullathum choodu, rasavasthukkal ennivaye prathirodhikkunnathumaanu. athinaal, avaa electronics vyavasaayathil vazhakkamulla kebilukalkkum kanthika vayaril insulating philimaayum upayogikkunnu. udaaharanathinu, oru laptop computeril, pradhana lojik boardine displayumaayi bandhippikkunna cable (laptop thurakkumbozho adaykkumbozho oro thavanayum ithu valayanam) palappozhum chembu kandakdarukalulla oru polymide bays aanu. polymide philimukalude udaaharanangalil appikkal, kapttan, appelex, videk paii, norttan th, captrex enniva ulppedunnu.
medical allengil uyarnna thaapanila prayogangalkkaayi opttikkal fiberukal kottu cheyyaan polymide upayogikkunnu.
integrated sarkyoottukaludeyum mems chippukaludeyum nirmmaanatthil insulating, paasiveshan lair enna nilayilaanu polymide resin adhikamaayi upayogikkunnathu. polymide paalikalkku nalla mechanical neelavum tensile shakthiyumund, ithu polymide paalikalkkidayilo polymide paaliykkum nikshepikkappetta loha paaliykkum idayiloo chernnupokaanum sahayikkunnu. gold philim polymide philim thammilulla ettavum kuranja prathipravartthanavum polymide philiminte uyarnna thaapanila sthirathayum vividha tharatthilulla paaristhithika sammarddangalkku vidheyamaakumbol vishwasaneeyamaaya insulation nalkunna oru samvidaanathinu kaaranamaakunnu. selphone aantinakalkulla substrate polymide upayogikkunnu.
bahirakasha pedakatthil upayogikkunna multy-lair insulation saadhaaranayaayi aluminium, velli, svarnnam allengil germanium ennivayude nerttha paalikal kondu pothinja polymide kondaanu nirmmikkunnath. bahirakasha pedakatthinte purathu palappozhum kaanapedunna swarnna niramulla metteeriyal saadhaaranayaayi otta aluminium polymide aanu, aluminium orotta paali akathekku abhimukeekarikkunnu. manja-thavitt polymide uparithalathinu svarnnathinu samanamaaya niram nalkunnu.
mechanical bhagangal.
sintering saankethikavidyakal (hoott compression moulding, direct forming, isostaattik pressing) vazhi bhaagangalum aakruthikalum nirmmikkaan polymide podi upayogikkaam. uyarnna thapanilayil polum avayude uyarnna mechanical sthiratha kaaranam avaa aavasyamulla prayogangalil bushingukal, bairingukal, sokkattukal allengil nirmmaana bhagangalaayi upayogikkunnu. tribological gunangal mechappeduthunnathinna, graafait, ptfe allengil molybdinum sulfide polulla khara lubricantukalulla samyukthangal saadhaaranamaanu. polymide bhagangalilum aakruthikalilum p84 nt, vtec pi, meldin, vespel, plavis enniva ulppedunnu.
filterukal.
kalkari vaidyutha nilayangal, maalinya insinarettarukal allengil simant plaantukal ennivayil, choodulla vaathakangal filter cheyyaan polymide naarukal upayogikkunnu. eee prayogatthil, oru polymide soochi podiyeyum kanikakaleyum exhost vaathakathil ninnu verthirikkunnu.
vellam shudheekarikkunnathil reverse ausmotic philimino maple syrup uthppaadanam polulla vellathil ninnulla nerppicha vasthukkalude saandrathayko upayogikkunna ettavum saadhaaranamaaya vasthu koodiyaanu polymide.
matoraal.
medical tubinginaayi polymide upayogikkunnu, udha.jii. vascular katheettarukal, athinte pottitherikkunna mardha prathirodhatthinum vazhakkathinum raasa prathirodhatthinum.
ardhachaalaka vyavasaayam polymide uyarnna thapanilayulla pashayayi upayogikkunnu; ithu oru mechanical stress bafara upayogikkunnu.
chila polymideukal photorosist pole upayogikkaam; "positteev", "negatteevu" tharam photorosist polulla polymide vipaniyil nilavilundu.
icaros solar sailing bahirakasha pedakam rokkatt enchinukalillaathe pravartthikkaan polymide resin paalukal upayogikkunnu.

