Kuyeza kukhuthala kwa polimita kungapangitse kapena kusokoneza njira yonse yopangira PET. Kwa iwo omwe ali mumakampani opanga PET, kusintha kuchoka pa njira zovuta zamanja kupita ku ukadaulo wapamwamba kwambiri kukuwonetsa kudumpha kofunikira kwambiri pakuchita bwino, khalidwe, komanso kukhazikika.Lonnmeter Tuning Fork Viscometerimawonekera ngati yosintha masewera, yopereka chidziwitso cha nthawi yeniyeni pakukhuthala kwa polimazomwe zimapatsa mphamvu opanga kuti azitha kuchita bwino mbali iliyonse ya ntchito zawo.
Kufunika kwa Kuyeza Kukhuthala kwa PET
Thekukhuthala kwa polimamonga PET si nambala yokha, yosonyeza momwe polima wosungunuka amayendera, momwe mabotolo amasungira mawonekedwe awo, kapena momwe ulusi umasungira mphamvu zawo.Muyeso wa kukhuthala kwa polimaimaonetsetsa kuti zinthu zanu za PET zikukwaniritsa miyezo yokhazikika, yomveka bwino, komanso yogwira ntchito bwino pa ntchito monga ma CD, nsalu, ndi mapulasitiki aukadaulo. Pogwiritsa ntchito chida choyezera kukhuthala kwamkati mwamkati, mumatha kupewa zolakwika, kuchepetsa zinyalala, makamaka mukamagwiritsa ntchito PET yobwezerezedwanso (rPET).
Kodi Polyethylene Terephthalate ndi chiyani?
Polyethylene terephthalate, kapena PET, ndi polyester yopangidwa ndi thermoplastic yochokera ku polycondensation ya terephthalic acid ndi ethylene glycol, yotchuka chifukwa cha kusakaniza kwake kwapadera. Chotchinga chake cholimba ku mpweya ndi chinyezi, kuphatikiza mphamvu yayikulu yamakina komanso kumveka bwino kwa kuwala, zimapangitsa kuti ikhale chinthu chosankhidwa kwambiri pazinthu zonse kuyambira mabotolo akumwa mpaka zida zamagalimoto.kukhuthala kwamkati kwa PETimagwirizana mwachindunji ndi kulemera kwake kwa mamolekyu, zomwe zimatsimikiza ngati ikuyenera ulusi wa nsalu wokhuthala pang'ono (0.4–0.7 dL/g) kapena mabotolo okhuthala kwambiri (0.7–0.85 dL/g). Pamene kutalika kwa unyolo kumakula panthawi yopangira, momwemonsokukhuthala kwa polima, kukonza momwe ingagwiritsidwire ntchito komanso kulola mapulogalamu okonzedwa bwino omwe akwaniritsa zosowa zosiyanasiyana zamakampani, kuphatikizapo kuphatikiza kwakukulu kwa zinthu zobwezerezedwanso.
Kodi Kukhuthala kwamkati kwa PET ndi chiyani?
Thekukhuthala kwamkati kwa PETndi muyeso wofunikira womwe umasiyanitsa gawo la mamolekyu a polymer pa kayendedwe ka kayendedwe ka madzi, komwe kumawonetsedwa mu ma deciliter pa gramu (dL/g). Kumawonetsa kuchuluka kwa hydrodynamic kwa unyolo wa PET mu yankho losungunuka, lomwe limagwira ntchito ngati chizindikiro chodalirika cha kulemera kwa mamolekyu popanda zotsatira zosokoneza za kuchuluka. Mwachitsanzo, magiredi a nsalu nthawi zambiri amakhala pakati pa 0.4 ndi 0.7 dL/g, pomwe mapulasitiki opanga uinjiniya amafuna 1.0 mpaka 2.0 dL/g. Gawoli limatsogolera ma processor poneneratu momwe kusungunuka kumakhalira, mphamvu yamakina, komanso kuyenerera kugwiritsa ntchito zinazake. Kusiyanasiyana kwa kristalo kapena kuwonongeka kumatha kusintha.kukhuthala kwamkati kwa PET, zomwe zimapangitsa kuti muyeso wolondola ukhale wofunikira kuti zitsimikizire kuti mitsinje ya PET yomwe sinali yopangidwanso komanso yobwezeretsedwanso ikugwirizana, kuteteza mtundu wa malonda ndi kudalirika kwa njira.
kukhuthala kwa mkati mwa chiweto
Kukhuthala kwa mkati mwa PET kutengera momwe imagwiritsidwira ntchito
Momwe Mungayezere Kukhuthala Kwamkati kwa PET Mosalekeza
Kuyeza kwa PET nthawi yeniyeni kumasintha kuchoka pa njira yogwira ntchito kwambiri kupita ku njira yopitilira yogwira ntchito, zomwe zimakupatsani mwayi woti muyambe kugwiritsa ntchito polymerization nthawi yeniyeni.kuchepetsa kukhuthala kwa ma polimaKuyesa, pogwiritsa ntchito magalasi a capillary viscometers, kumafuna kukonzekera zitsanzo pamanja ndi kuchuluka kwa zosungunulira, zomwe zimachepetsa kupanga.
Motsatanama viscometer a polimita, monga Lonnmeter, imasintha izi mwa kuphatikiza mwachindunji mu ma reactor kapena mizere yotulutsira, kuyezakukhuthala kwa polimakudzera mu kusintha kwa ma frequency a resonant mu sensa ya fork yosinthira. Ma aliquot ang'onoang'ono a zitsanzo amasanthulidwa mosalekeza, ndi ma viscosity ratios owerengedwa ndikuwonjezedwa kukukhuthala kwamkati kwa PETpogwiritsa ntchito mitundu ngati Solomon-Cutà equation. Kuchepetsa kutentha kumatsimikizira kulondola, kulola ogwiritsa ntchito kusintha magawo a reaction nthawi yomweyo, kukulitsa kuwongolera kulemera kwa mamolekyulu ndi kukhazikika kwa njira.
Mavuto mu Kuyeza Kukhuthala kwa PET
Kuyezakukhuthala kwa polimaKupanga ma PET kuli ndi mavuto ambiri omwe amafuna mayankho apamwamba. PET yobwezerezedwanso (rPET) imayambitsa kusinthasintha chifukwa cha kusakhazikika kwa zinthu, zomwe zimapangitsa kuti zinthu zisamayende bwino.kukhuthala kwa polimaKuwerenga komwe kungasokoneze kukonza. Ma kristalo okwera kwambiri amafunika kusungunuka kutentha kopitilira 100°C, zomwe zingachititse kuti unyolo uwonongeke komanso kuwonongeka komwe kungasinthe.kukhuthala kwamkati kwa PETZotsatira. Zachikhalidwekuchepetsa kukhuthala kwa yankhoNjirazi sizimangotenga nthawi yokha komanso zimaika ogwiritsa ntchito pa zinthu zosungunulira zoopsa monga phenol kapena tetrachloroethane, zomwe zimapangitsa kuti pakhale zoopsa. Kuphatikiza apo, kulumikiza kukhuthala kwa yankho kuti lisungunuke kukhuthala pansi pa mikhalidwe yokonza kwambiri kumakhala kovuta, pomwe hydrolysis yoyambitsidwa ndi chinyezi ingachepetse kukhuthala, zomwe zimapangitsa kuti kuwongolera kwabwino kukhale kovuta. Zopinga izi zikugogomezera kufunikira kwa machitidwe odziyimira pawokha, okhazikika kuti apereke deta yodalirika komanso yeniyeni.
- Kusinthasintha kwa rPETMagwero osiyanasiyana amayambitsa kusasinthasinthakukhuthala kwa polima, kusagwirizana kwa gulu lonse.
- Kuwonongeka kwa kutenthaKutentha kwambiri komwe kumasungunuka kumatha kutsikakukhuthala kwamkati kwa PETkudzera mu kudula kwa unyolo.
- Zoopsa zosungunulira: Buku lamanjakuchepetsa kukhuthala kwa ma polimakuyezetsa kumawonjezera kukhudzidwa ndi mankhwala oopsa.
- Kusagwira ntchito bwino kwa nthawiNjira zachikhalidwe zimachedwetsa kusanthula, kuchedwetsa kusintha kwa njira.
- Kudalira kumetaKusiyana pakati pa yankho ndi kukhuthala kwa kusungunuka kumavuta kulosera.
- Kuzindikira chinyezi: Hydrolysis panthawi yotulutsa imachepetsakukhuthala kwa polima, zomwe zimakhudza khalidwe.
- Kulamulira kutentha: Kulipira kolondola ndikofunikira kwambiri kuti tipewe zolakwika muyeso.
Nchifukwa chiyani Kuwunika Kosalekeza Pa Intaneti Ndikofunikira Pakupanga PET?
Kuwunika kosalekeza pa intaneti kwakukhuthala kwa polimaimasintha kapangidwe ka PET mwa kupereka chakudya chamoyo cha mphamvu ya kulemera kwa mamolekyulu, zomwe zimathandiza kuwongolera molondola komwe kuyesa kwa batch sikungagwirizane nako. Njirayi ikutsimikizira kuti gawo lililonse la polymerization—kuyambira kuyankha kwa monomer mpaka kusungunuka—likugwirizana ndi zofunikira zomwe zili mu chandamale, kuchepetsa kupotoka komwe kungawononge ubwino wa chinthu. Mwa kuphatikizapolima ya viscometer yamkatiopanga apeza zabwino zambiri zomwe zimapangitsa kuti zinthu ziziyenda bwino, zikhale zotetezeka, komanso zokhalitsa, zomwe zimapangitsa kutimomwe mungayezerere kukhuthala kwa PET mkatiubwino wanzeru pakupanga kwamakono.
- Kuwongolera bwino njira zoyendetsera ntchito kudzera mu kusanthula bwino: PompopompoMuyeso wa kukhuthala kwa polimazimathandiza kusintha nthawi yomweyo momwe zinthu zimachitikira, zomwe zimathandiza kuti unyolo ukhale wokulira nthawi zonse.
- Ubwino wa malonda ndi kuchepetsa kuwononga: Kuzindikira msanga zolakwika za kukhuthala kumachepetsa magulu osatsimikizika, kukulitsa phindu ndikuchepetsa kutayika kwa zinthu.
- Kugwiritsa ntchito mphamvu zochepa: Magawo okonzedwa bwino amaletsa kukonzedwa mopitirira muyeso, kuchepetsa kugwiritsa ntchito mphamvu mu ma reactor ndi ma extruder.
- Chitetezo cha antchito chikuwonjezeka: Machitidwe odzipangira okha amachepetsa kugwiritsa ntchito zinthu zosungunuka ndi zosungunulira zapoizoni, zomwe zimawonjezera chitetezo kuntchito.
- Kuyankha mwachangu ku zovuta: Ma loops obwerezabwereza nthawi yomweyo amalola kusintha mwachangu, ndikusunga kuyenda kwa ntchito.
- Chithandizo cha kuphatikizana kwa rPET: Kuwunika kosalekeza kumatsimikizirakukhuthala kwa polimamu mitsinje yobwezerezedwanso, kuonetsetsa kuti ikugwirizana.
- Kugwiritsa ntchito bwino ndalama: Kusanthula kochepa kwa labu kumathandiza kuti ntchito ziyende bwino, zomwe zimachepetsa ndalama zogulira zinthu zina.
Dziwani Zambiri Zokhudza Ma Meter Ochulukirachulukira
Mayeso Ena Ogwiritsa Ntchito Paintaneti
Lonnmeter Tuning Fork Viscometer
TheLonnmeter Tuning Fork Viscometeridapangidwa kuti ikwaniritse zofunikira zaMuyeso wa kukhuthala kwa polimaPakupanga ma PET, imapereka kulondola kosayerekezeka komanso kulimba. Ndi kukhuthala kwa 1 mpaka 8,000 cP, kulondola kwa ±3.0%, komanso kubwerezabwereza kwa ±1%, imagwira ntchito pansi pa kupsinjika mpaka 6.4 MPa ndi kutentha mpaka 450°C, ili mu chipinda chotetezedwa ndi IP66 choyendetsedwa ndi 24 V DC. Mphamvu yake ya 4-20 mA DC, yopangidwa ndi zipangizo zolimba monga chitsulo chosapanga dzimbiri cha 316L, Teflon, kapena Hastelloy, komanso ikugwirizana ndi miyezo ya HG20592 flange, imatsimikizira kuti imagwirizana bwino ndi mafakitale. Yovomerezeka kuti isaphulike (ExdIIBT4), imayankha mumasekondi 5 okha, zomwe zimapangitsa kuti ikhale yoyenera nthawi yeniyeni.kukhuthala kwa polimakuyang'anira.
Viscometer iyi imagwiritsa ntchito chizindikiro cha acoustic kuti ichititse foloko yosinthira yachitsulo, yomwe imagwedezeka ndi ma frequency ake achilengedwe omveka bwino—ma frequency ogwirizana mwachindunji ndikukhuthala kwa polimaikakhudzana nayo. Kusanthula kwapamwamba kwa ma frequency, pamodzi ndi kubwezera kutentha, kumapereka chidziwitso cholondolakukhuthala kwa polimakuwerenga, kuthana ndi kutentha komwe kungasokoneze zotsatira. Ukadaulo uwu umatsimikizira kuti umagwira ntchito bwino kwambiri m'mikhalidwe yovuta ya kapangidwe ka PET, kuyambira ma reactor osungunuka mpaka ma extruder odula kwambiri.
Ubwino wa Inline Viscometer
Kugwiritsa ntchito viscometer yamkati monga momwe Lonnmeter imafotokozeransomomwe mungayezerere kukhuthala kwa PET mkati, zomwe zikupereka mwayi wopita patsogolo pakuchita bwino komanso kudalirika poyerekeza ndi zachikhalidwekuchepetsa kukhuthala kwa ma polimanjira. Mwa kupereka deta yokhazikika komanso yeniyeni, imapatsa mphamvu opanga kukonza njira, kuchepetsa kuwononga, ndikuwonjezera mtundu wa malonda, zonse pamodzi ndi zolinga zokhazikika kudzera mu kuphatikiza bwino kwa rPET.
- Kusanthula mwachangu: Kuchepetsa nthawi yoyezera poyerekeza ndi malangizokuchepetsa kukhuthala kwa yankhonjira.
- Kugwiritsa ntchito zosungunulira zochepa: Amachepetsa zinyalala, amachepetsa kuwonongeka kwa chilengedwe.
- Kapangidwe kolimba: Zimaletsa kutsekeka kwa kuyenda kwa PET kokhuthala, zomwe zimathandiza kuti nthawi igwire ntchito.
- Kulondola kwambiri: Amapeza RSD pansi pa 1% kuti akhale odalirikakukhuthala kwa polimadeta.
- Kugwiritsa ntchito mosiyanasiyana: Imagwirira ntchito PET yosasinthika komanso yobwezeretsedwanso mosavuta.
- Kusunga ndalama: Amachepetsa zinthu zomwe sizinatchulidwe bwino komanso ndalama zolipirira mayeso a labu.
- Kulimbikitsa kukhazikika: Imathandizira kugwiritsa ntchito bwino rPET ndikuwongolera khalidwe nthawi zonse.
Chifukwa chiyani muvomereze zakale, malangizoMuyeso wa kukhuthala kwa polimapamene mungathe kugwiritsa ntchito mphamvu yaLonnmeter Tuning Fork Viscometer❖ Kwezani njira yanu molondola nthawi yeniyeni, kuchepetsa kutaya zinthu, komanso chitetezo chowonjezereka. Lumikizanani nafe tsopano kuti mudziwe momwe ukadaulo uwu ungasinthire kupanga kwanu kwa PET, kuonetsetsa kuti zinthu zanu ndi zapamwamba komanso zogwira ntchito bwino. Chitanipo kanthu lero—chipambano chanu chotsatira chikukuyembekezerani!
