Polima kusungunuka mamasukidwe akayendedwe muyeso umatsimikizira extrusion ndi akamaumba ndondomeko. Kuwunika kwa nthawi yeniyeni ya viscosity ndikofunika kwambiri kusiyana ndi kutentha ndi kupanikizika.
Overviuwuof ExtrosanMoldingProcess
Extrusion akamaumba ndi imayenera kupanga m'mafakitale ambiri kupanga mbiri mosalekeza monga mipope, mafilimu, mapepala, etc. Kumathandiza kupanga akalumikidzidwa zovuta cross-Sectional mu khalidwe losasinthika pamene akutsimikizira mkulu kupanga liwiro ndi mwanzeru zinthu. Kupita patsogolo kodziwikiratu monga makina opangira makina, kuyang'anira nthawi yeniyeni ndi kuwunikira njira zobwezeretsanso zathandizira kulondola komanso kuchepetsa kuwononga chilengedwe kudzera pakuchepetsa zinyalala.
Rough IDea zaZowonjezerarusipaMachine
Makina owonjezera amakhala ndi magawo otsatirawa: hopper, wononga zodyera, zinthu zotenthetsera ndi mpope wamagetsi. Zinthuzo zimadyedwa mu makina a hopper. Chomangira chodyera chozungulira mosalekeza, choyendetsedwa ndi mota ndi gearbox, chimasuntha zinthu motsatira mbiya ndikudutsa pakufa. Zinthu zotenthetsera zomwe zili m'mbiya zimasunga kutentha kuti zifewetse ndikusungunula zinthu za polima. Pambuyo potuluka munsaluyo, chinthu chosungunukacho chimalowa mu nkhungu yokhala ndi kabowo kamodzi kapena kuposerapo, kumene chimazizira ndi kulimba kukhala momwe akufunira. M'makina ena, pampu ya gear imayikidwa pakati pa mbiya ndikufa kuti zitsimikizire kupanikizika kosasinthasintha muzinthu zomwe zimatuluka.
Mfundo Zoyezera Viscosity pa Makina Otulutsa
Kutuluka kwa Hopper / Malo Odyera: Imayesa kukhuthala koyambirira kosungunuka pomwe polima ikuyamba kufewa.
Melting Zone (Mid-Barrel): Imajambula kusinthako kukakhala kusungunuka kwathunthu.
Metering Zone(Pamaso pa Gear Pump kapena Die): Imayezera kuyeza kwa kukhuthala kwa polima pakugwira ntchito kwa shear.
Die Entrance: Amapereka zenizeni nthawi Sungunulani mamasukidwe akayendedwe deta pa nsonga extrusion.
Kumvetsetsa Polymer Melt ndi Viscosity
Kodi polymer melt ndi chiyani?
Ndi polima wotenthedwa mpaka kusungunuka, kuwonetsa zinthu zoyenda zomwe zimalola kupangidwa kudzera mu extrusion kapena kuumba. TheSungunulani mamasukidwe akayendedwe a ma polima-kukana kuyenda - kumadalira kulemera kwa maselo, kutentha, kumeta ubweya, ndi zowonjezera, zomwe zimakhudza mphamvu ya chinthu chomaliza ndi kumaliza. Mupolima extrusion ndondomeko, pomwe polima wosungunuka amatulutsidwa kudzera mukufa, komanso mu jekeseni, pomwe amadzaza nkhungu mopanikizika, kukhalabe bwino.Sungunulani mamasukidwe akayendedwendizofunikira. Zachikhalidwepolima kusungunuka mamasukidwe akayendedwe muyesoNjira, monga offline capillary rheometry, nthawi zambiri imachedwa chifukwa cha kuchedwa, zomwe zimapangitsa kutimotsatanaviscometer kwa ma polimakwa zidziwitso zenizeni zenizeni.
Zovuta mu Polymer Extrusion ndi Kuwongolera Njira
Thepolima extrusion ndondomekondi jekeseni akamaumba amakumana ndi zopinga zazikulu pakusunga mosasinthasinthaSungunulani mamasukidwe akayendedwe. Kusiyanasiyana chifukwa cha kutentha kwa kutentha ndi kusinthasintha kwa mitengo ya shear kungayambitse kusagwirizanaSungunulani mamasukidwe akayendedwe a ma polima, zomwe zimayambitsa zolakwika monga kusakhazikika kwapamtunda kapena kusapezeka kwa ma profaili owonjezera. Mizere yayikulu ya extrusion imalimbana ndi yunifolomupolima kusungunuka mamasukidwe akayendedwe muyesokudutsa kuyenda, kusunga kutsata mu kayendetsedwe ka ndondomeko. Popanga jakisoni wothamanga kwambiri, zosintha pamanja zimalephera kuyenderana ndi nthawi yozungulira, kuyika pachiwopsezo cha warpage kapena kudzaza kosakwanira. Mavuto awa akugogomezera kufunika kopita patsogoloviscometer ya polymermachitidwe, mongaviscometer yokha ya polima, kupereka zenizeni zenizeni ndikugonjetsa malire a njira zachikhalidwe.
Chifukwa chiyani Sungunulani Viscosity Monitoring Matters
Sungunulani mamasukidwe akayendedwe kayedwe kake ndi kofunikira kwambiri pakupanga polima extrusion ndi jekeseni pazifukwa zingapo. Mu extrusion, kusasinthasintha kusungunuka kwa viscosity kumawonetsetsa kuti kufa kwa yunifolomu kumadzadza ndikuteteza zolakwika monga zosokoneza zapamtunda kapena kutupa. Popanga jakisoni, zimakhudza kudzazidwa kwa nkhungu, mtundu wa gawo, ndi nthawi yozungulira, pomwe kusiyanasiyana kungayambitse kudzaza masamba kapena kusakwanira. Kuwunika munthawi yeniyeni kumathandizira ogwiritsa ntchito kusintha kutentha, kupanikizika, kapena kapangidwe ka zinthu pa ntchentche, kukhathamiritsa kugwiritsa ntchito mphamvu ndikuchepetsa zinyalala - nkhawa zazikulu pomwe malamulo a kaboni akukhwimitsa mu 2025.
Kuvuta kwa kuyeza kwa ma polymer melt viscosity kumachokera ku chikhalidwe chomwe sichili cha Newtonian cha kusungunuka kwa polima, komwe kukhuthala kumasiyana ndi kumeta ubweya ndi mbiri ya kutentha. Machitidwe a inline polymer-melt viscometer systems amawongolera izi popereka deta yosalekeza, zomwe zimathandizira kuwongolera njira zomwe njira zopanda intaneti sizingafanane.
Katswiri wa Lonnmeter mu Melt Viscosity Monitoring
Ndikuchita zambiri kwazaka khumi,Lonnmeter, kutsogolerapolima viscometer wogulitsa, yadzikhazikitsa yokha ngati mpainiya mukuwunika mamasukidwe akayendedwe. Ukatswiri wawo umafikira pamizere yothamanga kwambiri, yotentha kwambiri komanso malo opangira jakisoni, kuthana ndi zosowa zama polima osiyanasiyana monga polyethylene, polypropylene, ndi PET.
Zothetsera Zamankhwala
Lonnmeter imapereka mwayi wapamwambaviscometer yosungunuka polimamayankho okonzedwaSungunulani mamasukidwe akayendedwe polojekiti. TheInline Viscometerlakonzedwa kuti perpendicular kapena kufanana unsembe mu makina extrusion, kuyezaSungunulani mamasukidwe akayendedwempaka 100,000 cP · s ndi kutentha mpaka 300 ° C, osakhudzidwa ndi kusiyana kwa kayendedwe.
Kusintha mwamakonda ndi chizindikiro cha zopereka za Lonnmeter, zokhala ndi zosankha zolumikizira ulusi kapena zopindika komanso kutulutsa kwa data kudzera pa 4-20mA kapena RS485, kuphatikiza mosasinthika ndi makina ongochita. Mu extrusion, kukhazikitsidwa kwa perpendicular kumatsimikizira kusokonezeka kochepa.
Ubwino wa Lonnmeter's Melt Viscosity Solutions
Chitsimikizo chadongosolo:Pompopompopolima kusungunuka mamasukidwe akayendedwe muyesoimaonetsetsa kuti ma extrudates opanda chilema ndi magawo opangidwa.
Mtengo Mwachangu:Kuchepetsa zinyalala ndi kukonza kumachepetsa ndalama zogwirira ntchito.
Kupulumutsa Mphamvu:Kusintha kolondola kumawonjezera kugwiritsa ntchito mphamvu.
Kusintha kwa Njira:Kugwirizana ndi ma polima osiyanasiyana kumathandizira zosowa zosiyanasiyana zopanga.
Chitetezo Chowonjezera:Kuzindikira koyambirira kwa ma viscosity anomalies kumalepheretsa kupsinjika kwa zida.
FAQs
N'chifukwa chiyani kusungunuka kukhuthala kuli kofunika kwambiri kuposa kutentha kapena kupanikizika?
Kusungunuka kwa viscosity kumakhudza mwachindunji kusungunuka kwa kusungunuka, kudzaza kwakufa, ndi kusasinthasintha kwazinthu, nthawi zambiri kumaposa mphamvu ya kutentha kapena kupanikizika. Muyezo woyezera kukhuthala koyenera kwa polima kumalepheretsa zolakwika ngati warpage kapena kufa kutupa, zomwe zimapangitsa kuti zikhale zofunika kwambiri pakuwongolera njira.
Kodi Lonnmeter imatsimikizira bwanji kuphatikiza kwa data?
Viscometer yodziwikiratu ya polima imaphatikizana ndi ma protocol a 4-20mA kapena RS485, yopereka data yeniyeni yowongolera machitidwe. Katswiri wake wa mbiri yakale, wopezeka kudzera pa mapulogalamu, amapereka zidziwitso zakale, kupitilira malire achikhalidwe a viscometer polima.
Kodi ndi zinthu ziti zomwe zimakhudza kusungunuka kwamphamvu kwa ma polima?
Kusungunuka kwa ma viscosity a ma polima kumatengera kulemera kwa maselo, kutentha, kumeta ubweya, komanso kupezeka kwa zowonjezera kapena zodzaza. Kulemera kwa maselo ndi kutentha kochepa kumawonjezera kukhuthala, zomwe zimakhudza ndondomeko ya polima extrusion.
Sungunulani mamasukidwe akayendedwe kuwunika ndi mwala wapangodya wa polima extrusion ndondomeko ndi jekeseni akamaumba, kuonetsetsa khalidwe ndi bwino. Ndi ukadaulo wotsimikiziridwa wa Lonnmeter komanso viscometer yapamwamba yama polima, opanga amatha kuthana ndi zovuta pakuwongolera ndikuwongolera kupanga. Funsani mtengo lero kuchokera kwa ogulitsa odalirika a polima viscometer!
Nthawi yotumiza: Jul-31-2025
