Chachinayi, kugwiritsa ntchito kwapolyimide:
Chifukwa cha mawonekedwe a polyimide omwe tawatchulawa pakuchita komanso chemistry yopanga, ndizovuta kupeza mitundu ingapo yamapulogalamu monga polyimide pakati pa ma polima ambiri, ndipo imawonetsa magwiridwe antchito apamwamba kwambiri pazonse..
1. Filimu: Ndi imodzi mwazinthu zakale kwambiri za polyimide, zomwe zimagwiritsidwa ntchito popanga ma motors ndi kukulunga zingwe.Zogulitsa zazikulu ndi DuPont Kapton, Ube Industries 'Upilex series ndi Zhongyuan Apical.Mafilimu a Transparent polyimide amagwira ntchito ngati magawo osinthika a cell cell.
2. Kupaka: kumagwiritsidwa ntchito ngati kutsekereza vanishi pawaya wamagetsi, kapena kugwiritsidwa ntchito ngati zokutira zosagwira kutentha kwambiri.
3. Zida zophatikizika zapamwamba: zomwe zimagwiritsidwa ntchito muzamlengalenga, ndege ndi zida za roketi.Ichi ndi chimodzi mwazinthu zomangika zomwe zimalimbana ndi kutentha kwambiri.Mwachitsanzo, pulogalamu ya ndege ya US supersonic idapangidwa ndi liwiro la 2.4M, kutentha kwapamtunda kwa 177 ° C pakuuluka, komanso moyo wofunikira wa 60,000h.Malinga ndi malipoti, 50% ya zida zomangika zatsimikiziridwa kuti zigwiritse ntchito thermoplastic polyimide ngati utomoni wa matrix.Mpweya wa carbon ulusi wolimbitsa zida zophatikizika, kuchuluka kwa ndege iliyonse ndi pafupifupi 30t.
4. Fiber: The modulus ya elasticity ndi yachiwiri kwa carbon fiber.Amagwiritsidwa ntchito ngati zinthu zosefera pazida zotentha kwambiri komanso zinthu zotulutsa ma radio, komanso nsalu zotchingira zipolopolo ndi zosawotcha moto.
5. Pulasitiki ya thovu: imagwiritsidwa ntchito ngati zinthu zotentha kwambiri zosagwira kutentha.
6. Mapulasitiki a Engineering: Pali mitundu ya thermosetting ndi thermoplastic.Mitundu ya thermoplastic imatha kupangidwa kapena kupangidwa ndi jakisoni kapena kusamutsa.Amagwiritsidwa ntchito kwambiri podzipaka mafuta, kusindikiza, kutchinjiriza ndi zida zamapangidwe.Zida za Guangcheng polyimide zayamba kugwiritsidwa ntchito pamakina monga ma compressor rotary vanes, mphete za piston ndi zosindikizira zapadera zapampu.
7. Zomatira: zimagwiritsidwa ntchito ngati zomatira zamapangidwe apamwamba.Guangcheng polyimide zomatira wapangidwa ngati mkulu-kuteteza potting pawiri kwa zipangizo zamagetsi.
8. Nembanemba kulekana: ntchito kulekana kwa awiriawiri gasi zosiyanasiyana, monga haidrojeni / nayitrogeni, nayitrogeni / mpweya, carbon dioxide / asafe kapena methane, etc., kuchotsa chinyezi mpweya mpweya hydrocarbon chakudya mpweya ndi alcohols.Itha kugwiritsidwanso ntchito ngati nembanemba ya pervaporation ndi nembanemba ya ultrafiltration.Chifukwa cha kukana kutentha ndi kukana kwa organic zosungunulira za polyimide, ndizofunika kwambiri pakulekanitsa mpweya wachilengedwe ndi zakumwa.
9. Photoresist: Pali zotsutsana ndi zoipa ndi zabwino, ndipo kuthetsa kungafikire mlingo wa submicron.Itha kugwiritsidwa ntchito mufilimu yamtundu wa fyuluta kuphatikiza ndi inki kapena utoto, zomwe zimatha kufewetsa njira yosinthira.
10. Kugwiritsa ntchito pazida zazing'ono zamagetsi: ngati gawo la dielectric la insulation ya interlayer, ngati chotchinga chochepetsera kupsinjika ndikuwongolera zokolola.Monga gawo lotetezera, limatha kuchepetsa kukhudzidwa kwa chilengedwe pa chipangizocho, komanso kutetezera a-particles, kuchepetsa kapena kuthetsa zolakwika zofewa (zofewa) za chipangizocho.
11. Njira yolumikizirana yowonetsera kristalo wamadzi:Polyimideimagwira ntchito yofunikira kwambiri pakugwirizanitsa zinthu za TN-LCD, SHN-LCD, TFT-CD ndi chiwonetsero chamtsogolo cha ferroelectric liquid crystal display.
12. Electro-optic zipangizo: zogwiritsidwa ntchito ngati zowonongeka kapena zowonongeka zowonongeka, zipangizo zosinthira kuwala, ndi zina zotero. Fluorine-containing polyimide imakhala yowonekera mumtundu wa kutalika kwa mafunde, ndipo kugwiritsa ntchito polyimide monga matrix a chromophore kungathandize kuti zinthuzo zitheke.bata.
Mwachidule, sikovuta kuwona chifukwa chake polyimide imatha kuonekera kuchokera ku ma polima onunkhira a heterocyclic omwe adawonekera muzaka za m'ma 1960 ndi 1970, ndipo pamapeto pake amakhala gulu lofunikira la zida za polima.
5. Malingaliro:
Monga chida chodalirika cha polima,polyimidewakhala akudziwika bwino, ndipo ntchito yake mu zipangizo zoteteza ndi zipangizo structural ikukula mosalekeza.Ponena za zida zogwirira ntchito, zikuwonekera, ndipo kuthekera kwake kukufufuzidwabe.Komabe, pambuyo pa zaka 40 za chitukuko, sichinakhale chokulirapo.Chifukwa chachikulu ndikuti mtengo wake ndi wokwera kwambiri poyerekeza ndi ma polima ena.Choncho, imodzi mwa malangizo akuluakulu a kafukufuku wa polyimide m'tsogolomu ayenera kukhalabe kupeza njira zochepetsera ndalama mu kaphatikizidwe ka monomer ndi njira zopangira polymerization.
1. Kaphatikizidwe ka ma monomers: Ma monomers a polyimide ndi dianhydride (tetraacid) ndi diamine.Njira ya kaphatikizidwe ya diamine ndi yokhwima, ndipo ma diamine ambiri amapezekanso malonda.Dianhydride ndi monomer yapadera, yomwe imagwiritsidwa ntchito makamaka popanga polyimide kupatulapo mankhwala ochiritsa a epoxy resin.Pyromellitic dianhydride ndi trimellitic anhydride angapezeke ndi gawo limodzi mpweya gawo ndi madzi gawo makutidwe ndi okosijeni wa durene ndi trimethylene yotengedwa heavy onunkhira mafuta, mankhwala oyenga mafuta.Ma dianhydride ena ofunikira, monga benzophenone dianhydride, biphenyl dianhydride, diphenyl ether dianhydride, hexafluorodianhydride, ndi zina zotero, apangidwa ndi njira zosiyanasiyana, koma mtengo wake ndi wokwera mtengo kwambiri.yuan zikwi khumi.Yopangidwa ndi Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, high-chiyero 4-chlorophthalic anhydride ndi 3-chlorophthalic anhydride angapezeke kuchokera o-xylene chlorination, makutidwe ndi okosijeni ndi isomerization kulekana.Kugwiritsa ntchito zinthu ziwirizi ngati zopangira zimatha kupanga Series dianhydrides, zokhala ndi kuthekera kwakukulu kochepetsera mtengo, ndi njira yopangira yofunikira.
2. Njira yopangira ma polymerization: Njira yogwiritsira ntchito masitepe awiri ndi njira imodzi ya polycondensation yonse imagwiritsa ntchito zosungunulira zotentha kwambiri.Mtengo wa aprotic polar solvents ndi wokwera kwambiri, ndipo ndizovuta kuwachotsa.Pomaliza, chithandizo cha kutentha kwambiri chikufunika.Njira ya PMR imagwiritsa ntchito chosungunulira mowa chotsika mtengo.Thermoplastic polyimide imathanso kupangidwa ndi polymerized ndi granulated mwachindunji mu extruder ndi dianhydride ndi diamine, palibe zosungunulira zomwe zimafunikira, ndipo magwiridwe antchito amatha kusintha kwambiri.Ndi njira yotsika mtengo kwambiri yopezera polyimide poyimitsa chlorophthalic anhydride mwachindunji ndi diamine, bisphenol, sodium sulfide kapena elemental sulfure osadutsa dianhydride.
3. Processing: ntchito polyimide ndi lonse, ndipo pali zofunika zosiyanasiyana processing, monga mkulu yunifolomu mapangidwe filimu, kupota, nthunzi mafunsidwe, sub-micron photolithography, zakuya molunjika khoma chosema Etching, lalikulu-dera, lalikulu- kuumba voliyumu, kuyika ayoni, kukonza molondola kwa laser, ukadaulo wosakanizidwa wa nano-scale, ndi zina zambiri zatsegula dziko lalikulu logwiritsa ntchito polyimide.
Ndi kuwongolera kwina kwaukadaulo waukadaulo wa kaphatikizidwe komanso kutsika kwakukulu kwa mtengo, komanso mawonekedwe ake apamwamba amakina ndi zida zamagetsi zamagetsi, thermoplastic polyimide idzakhala ndi gawo lodziwika bwino pantchito yazinthu mtsogolo.Ndipo thermoplastic polyimide ndi yabwino kwambiri chifukwa cha kusinthika kwake.
6. Mapeto:
Zinthu zingapo zofunika pakukula pang'onopang'ono kwapolyimide:
1. Kukonzekera kwa zipangizo zopangira polyimide: chiyero cha pyromellitic dianhydride sichikwanira.
2. Zopangira za pyromellitic dianhydride, ndiko kuti, kutulutsa kwa durene kumakhala kochepa.Kutulutsa kwapadziko lonse: matani 60,000 / chaka, zoweta zapakhomo: matani 5,000 / chaka.
3. Mtengo wopangira pyromellitic dianhydride ndiwokwera kwambiri.Padziko lapansi, pafupifupi matani 1.2-1.4 a durene amapanga 1 tani ya pyromellitic dianhydride, pamene opanga bwino kwambiri m'dziko langa amatulutsa pafupifupi matani 2.0-2.25 a durene.matani, okha Changshu Federal Chemical Co., Ltd. anafika matani 1.6/tani.
4. Kapangidwe ka polyimide ndi kakang'ono kwambiri kupanga mafakitale, ndipo machitidwe a polyimide ndi ambiri komanso ovuta.
5. Mabizinesi am'nyumba ambiri amakhala ndi chidziwitso chazofuna, zomwe zimalepheretsa malo ofunsira kukhala osiyanasiyana.Amakonda kugwiritsa ntchito zinthu zakunja kaye kapena amawona zinthu zakunja asanazifufuze ku China.Zosowa zabizinesi iliyonse zimachokera ku zosowa za makasitomala akumunsi abizinesi, mayankho azidziwitso ndi chidziwitso;njira zoyambira sizili zosalala, pali maulalo ambiri apakatikati, ndipo kuchuluka kwa chidziwitso cholondola sikuli bwino.
Nthawi yotumiza: Feb-13-2023