Okwesine, ukusetyenziswa kwepolyimide:
Ngenxa yeempawu ze-polyimide ekhankanywe ngasentla ekusebenzeni kunye nekhemistri yokwenziwa, kunzima ukufumana uluhlu olubanzi lwezicelo njenge-polyimide phakathi kweepolymers ezininzi, kwaye ibonisa ukusebenza okugqwesileyo kakhulu kuzo zonke iinkalo..
1. Ifilimu: Yenye yeemveliso zokuqala ze-polyimide, esetyenziselwa ukugquma kwee-motor kunye nezinto zokusonga kwiintambo.Iimveliso eziphambili yiDuPont Kapton, Ube Industries 'Upilex series kunye neZhongyuan Apical.Iifilimu ze-polyimide ezicacileyo zisebenza njengama-substrates eeseli zelanga.
2. Ukwaleka: kusetyenziswa ivanishi yokugquma kwingcingo ye-electromagnetic, okanye isetyenziswe njengokwaleka okuphezulu kokumelana nobushushu.
3. Izinto eziphambili ezihlanganisiweyo: ezisetyenziswa kwi-aerospace, inqwelomoya kunye namacandelo e-rocket.Yenye yezona zinto ziphezulu zokumelana nobushushu bezakhiwo.Ngokomzekelo, inkqubo ye-US supersonic airliner yenzelwe ngesantya se-2.4M, iqondo lokushisa elingaphezulu kwe-177 ° C ngexesha lokuhamba, kunye nobomi obufunekayo benkonzo ye-60,000h.Ngokweengxelo, i-50% yezinto zokwakha ziye zazimisela ukusebenzisa i-thermoplastic polyimide njenge-resin ye-matrix.Ikhabhoni fiber eyomeleziweyo imathiriyeli edityanisiweyo, isixa senqwelomoya nganye simalunga ne-30t.
4. I-Fiber: I-modulus ye-elasticity yeyesibini kuphela kwi-carbon fiber.Isetyenziswa njengesixhobo sokucoca kumajelo obushushu obuphezulu kunye nezinto ezinemitha, kunye nelaphu elingangenwa bullet kunye nomlilo.
5. Iplastiki yogwebu: isetyenziswa njengesixhobo sokugquma ubushushu obuphezulu.
6. Iiplastiki zobunjineli: Kukho iintlobo ze-thermosetting kunye ne-thermoplastic.Iintlobo ze-Thermoplastic zinokubunjwa okanye zifakwe inaliti okanye zidluliselwe.Ikakhulu isetyenziselwa ukuzithambisa, ukutywina, ukugquma kunye nezixhobo zokwakha.IGuangcheng polyimide imathiriyeli sele iqalisile ukusetyenziswa kwiindawo zoomatshini ezifana necompressor rotary vanes, iiringi zepiston kunye nezitywina ezikhethekileyo zempompo.
7. I-Adhesive: isetyenziswe njenge-adhesive yesakhiwo sokushisa okuphezulu.I-Guangcheng polyimide adhesive iye yaveliswa njenge-high-insulation potting compound yamacandelo e-elektroniki.
8. I-membrane yokwahlula: isetyenziselwa ukwahlula izibini ezahlukeneyo zegesi, njenge-hydrogen / i-nitrogen, i-nitrogen / i-oksijeni, i-carbon dioxide / i-nitrogen okanye i-methane, njl., ukususa ukufuma kwi-air hydrocarbon feed gas kunye ne-alcohols.Ingasetyenziswa kwakhona njenge-membrane ye-pervaporation kunye ne-ultrafiltration membrane.Ngenxa yokumelana nobushushu kunye nokumelana ne-organic solvent ye-polyimide, ibaluleke kakhulu ekuhlukaneni kweegesi eziphilayo kunye nolwelo.
9. I-Photoresist: Kukho ukuchasana okungalunganga kunye okulungileyo, kwaye isisombululo sinokufikelela kwinqanaba le-submicron.Ingasetyenziselwa ifilimu yokucoca umbala ngokudibanisa nee-pigments okanye idayi, enokwenza lula kakhulu inkqubo yokucubungula.
10. Ukusetyenziswa kwizixhobo ze-microelectronic: njenge-dielectric layer ye-interlayer insulation, njenge-buffer layer yokunciphisa uxinzelelo kunye nokuphucula isivuno.Njengomaleko okhuselayo, unokunciphisa impembelelo yokusingqongileyo kwisixhobo, kwaye unokukhusela i-a-particles, ukunciphisa okanye ukuphelisa impazamo ethambileyo (i-softerror) yesixhobo.
11. Iarhente yolungelelwaniso yomboniso wekristale elulwelo:Polyimideidlala indima ebaluleke kakhulu kwi-agent ye-agent ye-TN-LCD, i-SHN-LCD, i-TFT-CD kunye ne-furroelectric liquid crystal display.
12. Izinto ze-Electro-optic: ezisetyenziswa njengezinto ezisebenzayo okanye ezisebenzayo ze-waveguide, izinto zokutshintsha ukukhanya, njl.uzinzo.
Ukushwankathela, akukho nzima ukubona ukuba kutheni i-polyimide inokugqama kwiipolymers ezininzi ezinevumba elimnandi ze-heterocyclic ezavela ngeminyaka yoo-1960 noo-1970, kwaye ekugqibeleni ibe ludidi olubalulekileyo lwemathiriyeli yepolymer.
5. Umbono:
Njengemathiriyeli ethembisayo yepolymer,polyimidesele iqatshelwe ngokupheleleyo, kwaye ukusetyenziswa kwayo kwizinto ezikhuselayo kunye nezixhobo zokwakha zihlala zisanda.Ngokubhekiselele kwizinto ezisebenzayo, zivela, kwaye amandla ayo asahlolisiswa.Nangona kunjalo, emva kweminyaka engama-40 yophuhliso, akukabikho uhlobo olukhulu.Esona sizathu sesokuba ixabiso lisephezulu kakhulu xa lithelekiswa nezinye iipholima.Ngoko ke, enye yeendlela eziphambili zophando lwe-polyimide kwixesha elizayo kufuneka libe kukufumana iindlela zokunciphisa iindleko kwi-monomer synthesis kunye neendlela ze-polymerization.
1. Ukwenziwa kweemonomers: Iimonomers zepolyimide yidianhydride (tetraacid) kunye nediamine.Indlela yokudibanisa ye-diamine ikhulile ngokwentelekiso, kwaye iidiamine ezininzi zikwafumaneka ngokurhweba.I-Dianhydride yi-monoma ekhethekileyo, esetyenziswa kakhulu ekudibaneni kwe-polyimide ngaphandle kwe-ejenti enyanga i-epoxy resin.I-Pyromellitic dianhydride kunye ne-trimellitic anhydride inokufumaneka ngenqanaba elinye legesi kunye nesigaba se-oxidation ye-liquid ye-durene kunye ne-trimethylene ekhutshwe kwi-oyile enevumba elimnandi, imveliso yokucoca i-petroleum.Ezinye i-dianhydride ezibalulekileyo, ezifana ne-benzophenone dianhydride, i-biphenyl dianhydride, i-diphenyl ether dianhydride, i-hexafluorodianhydride, njl., zenziwe ngeendlela ezahlukeneyo, kodwa ixabiso libiza kakhulu.ishumi lamawaka eyuan.Iphuhliswe yi-Changchun Institute of Applied Chemistry, i-Chinese Academy of Sciences, i-high-purity 4-chlorophthalic anhydride kunye ne-3-chlorophthalic anhydride inokufumaneka kwi-o-xylene chlorination, i-oxidation kunye nokuhlukana kwe-isomerization.Ukusebenzisa ezi khompawundi zimbini njengemathiriyeli ekrwada zinokudibanisa iSeries dianhydrides, enesakhono esikhulu sokunciphisa iindleko, yindlela exabisekileyo eyenziweyo.
2. Inkqubo yePolymerization: Indlela esetyenziswayo ngoku enenyathelo-mbini kunye nenyathelo elinye le-polycondensation inkqubo yonke isebenzisa i-solvents ephezulu yokubilisa.Ixabiso le-aprotic polar solvents liphezulu, kwaye kunzima ukuyisusa.Ekugqibeleni, unyango oluphezulu lobushushu luyafuneka.Indlela ye-PMR isebenzisa i-solvent yotywala engabizi.I-Thermoplastic polyimide inokuthi ifakwe i-polymerized kwaye ihlanjululwe ngokuthe ngqo kwi-extruder kunye ne-dianhydride kunye ne-diamine, akukho i-solvent efunekayo, kunye nokusebenza kakuhle kunokuphuculwa kakhulu.Yeyona ndlela inoqoqosho yokufumana i-polyimide ngokwenza i-polymerizing ngqo kwi-chlorophthalic anhydride ene-diamine, i-bisphenol, i-sodium sulfide okanye i-elemental sulfur ngaphandle kokudlula kwi-diamined.
3. Ukucutshungulwa: Ukusetyenziswa kwe-polyimide kubanzi kakhulu, kwaye kukho iimfuno ezahlukeneyo zokucutshungulwa, njengokufana okuphezulu kokubunjwa kwefilimu, ukujikeleza, ukubekwa komphunga, i-sub-micron photolithography, i-etching enzulu eludongeni ekroliweyo, indawo enkulu, enkulu- ukubumba umthamo, ukufakelwa kwe-ion, ukuchaneka kwe-laser, iteknoloji ye-hybrid ye-nano-scale, njl.
Ngophuculo olongezelelweyo lwetekhnoloji yokucubungula itekhnoloji yokudibanisa kunye nokwehliswa okukhulu kweendleko, kunye neempawu zayo eziphezulu zomatshini kunye neempawu zokugquma umbane, i-thermoplastic polyimide ngokuqinisekileyo iya kudlala indima ebaluleke ngakumbi kwinkalo yemathiriyeli kwixesha elizayo.Kwaye i-thermoplastic polyimide inethemba ngakumbi ngenxa yokuqhubekeka kwayo kakuhle.
6. Isiphelo:
Izinto ezininzi ezibalulekileyo zophuhliso olucothayo lwepolyimide:
1. Ukulungiswa kwezinto eziluhlaza kwimveliso ye-polyimide: ukucoceka kwe-pyromellitic dianhydride akwanele.
2. Impahla ekrwada ye-pyromellitic dianhydride, oko kukuthi, ukuphuma kwe-durene kulinganiselwe.Imveliso yamazwe ngamazwe: iitoni ezingama-60,000 ngonyaka, imveliso yasekhaya: iitoni ezingama-5,000 ngonyaka.
3. Iindleko zokuvelisa i-pyromellitic dianhydride ziphezulu kakhulu.Ehlabathini, malunga ne-1.2-1.4 yeetoni ze-durene ivelisa i-1 toni ye-pyromellitic dianhydride, ngelixa abavelisi ababalaseleyo kwilizwe lam ngoku bavelisa malunga ne-2.0-2.25 yeetoni ze-durene.iitoni, kuphela Changshu Federal Chemical Co., Ltd. yafikelela 1.6 iitoni / ton.
4. Isikali sokuvelisa i-polyimide sincinci kakhulu ukwenza ishishini, kunye neempendulo zecala ze-polyimide zininzi kwaye zinzima.
5. Uninzi lwamashishini asekhaya anolwazi lwemfuno yemveli, olunciphisa indawo yesicelo kuluhlu oluthile.Bahlala besebenzisa iimveliso zangaphandle kuqala okanye babone iimveliso zangaphandle ngaphambi kokuba bazikhangele eTshayina.Iimfuno zeshishini ngalinye zivela kwiimfuno zabathengi abasezantsi beshishini, ingxelo yolwazi kunye nolwazi;imijelo yomthombo ayigudi, kukho amakhonkco amaninzi aphakathi, kwaye isixa solwazi oluchanekileyo alukho kwisimo.
Ixesha lokuposa: Feb-13-2023