Polymer Melt Viscosity Measurement

Kev ntsuas qhov viscosity ntawm cov polymer yaj txiav txim siab txog cov txheej txheem extrusion thiab molding. Kev saib xyuas viscosity tiag tiag tseem ceeb dua li kev saib xyuas kub thiab siab.

Overvitshiabof ExtrusionMoldingProcess

Kev txhaj tshuaj molding yog ib qho txheej txheem tsim khoom zoo hauv ntau lub lag luam rau kev tsim cov profiles txuas ntxiv xws li cov kav dej, cov yeeb yaj kiab, cov ntawv, thiab lwm yam. Nws ua rau muaj kev tsim cov duab sib tshooj nyuaj hauv qhov zoo sib xws thaum lav qhov ceev ceev ntawm kev tsim khoom thiab kev siv cov khoom siv tau zoo. Kev nce qib pom tseeb xws li kev ua haujlwm tsis siv neeg, kev saib xyuas lub sijhawm tiag tiag thiab kev saib xyuas cov txheej txheem rov ua dua tshiab tau txhim kho qhov tseeb thiab txo qhov cuam tshuam rau ib puag ncig los ntawm kev txo cov khib nyiab.

Rough Idea ntawmSab nraudrusirauMachine

Lub tshuab extrusion muaj cov khoom hauv qab no: lub hopper, lub hau pub, cov khoom cua sov thiab lub twj tso kua mis iav. Cov khoom siv raug pub rau hauv lub tshuab ntawm lub hopper. Lub hau pub mov uas tig tas li, tsav los ntawm lub cev muaj zog thiab lub gearbox, txav cov khoom siv raws lub thoob thiab dhau los ntawm lub pwm. Cov khoom cua sov raws lub thoob tswj qhov kub thiab txias kom mos thiab yaj cov khoom siv polymer. Tom qab tawm hauv lub pwm, cov khoom siv yaj nkag mus rau hauv pwm nrog ib lossis ntau qhov, qhov twg nws txias thiab khov rau hauv cov duab xav tau. Hauv qee lub tshuab, lub twj tso kua mis iav raug tso rau ntawm lub thoob thiab lub pwm kom ntseeg tau tias muaj kev sib xws hauv cov khoom siv tawm.

Polymer Extrusion thiab Txhaj Tshuaj Molding

Cov Ntsiab Lus Ntsuas Viscosity Tseem Ceeb ntawm Lub Tshuab Extrusion

Qhov Tawm Ntawm Lub Hopper / Thaj Chaw Pub Khoom: Ntsuas qhov viscosity ntawm cov khoom yaj thaum cov polymer pib mos.

Thaj Chaw Yaj (Nruab Nrab): Kaw qhov kev hloov pauv mus rau lub xeev molten tag nrho.

Thaj Chaw Ntsuas(Ua ntej Lub Twj Tso Kua Mis los yog Lub Tuag): Ntsuas qhov ntsuas viscosity ntawm cov polymer yaj hauv qab cov nqi txiav ua haujlwm.

Tuag Nkag: Muab cov ntaub ntawv viscosity yaj tiag tiag ntawm qhov chaw extrusion.

Nkag Siab Txog Polymer Melt thiab Viscosity

Polymer yaj yog dab tsi?

Nws yog ib qho polymer uas tau rhuab mus rau lub xeev molten, ua kom pom cov khoom ntws uas tso cai rau kev ua kom zoo los ntawm kev rho tawm lossis molding.viscosity ntawm cov polymers—qhov kev tiv thaiv rau kev ntws—nyob ntawm qhov hnyav molecular, kub, shear rate, thiab cov additives, cuam tshuam rau qhov khoom kawg lub zog thiab qhov tiav. HauvCov txheej txheem extrusion polymer, qhov twg cov polymer molten raug extruded los ntawm lub pwm, thiab hauv kev txhaj tshuaj molding, qhov twg nws sau cov pwm hauv qab siab, tswj hwm qhov zoo tshaj plawsyaj viscosityyog qhov tseem ceeb. Ib txwm muajkev ntsuas viscosity ntawm polymer yajcov txheej txheem, xws li offline capillary rheometry, feem ntau qeeb vim yog kev ncua sijhawm, ua rau hloov mus raukab hauv kabviscometer rau polymersrau kev pom tseeb tiag tiag.

Cov teeb meem hauv Polymer Extrusion thiab Process Control

LubCov txheej txheem extrusion polymerthiab kev txhaj tshuaj molding ntsib teeb meem loj heev hauv kev tswj hwm kev sib xwsyaj viscosityKev hloov pauv vim yog qhov kub thiab txias thiab kev hloov pauv ntawm cov shear rates tuaj yeem ua rau tsis sib npaugviscosity ntawm cov polymers, ua rau muaj qhov tsis zoo xws li qhov tsis sib xws ntawm qhov chaw lossis qhov khoob hauv cov qauv extruded. Cov kab extrusion loj loj muaj teeb meem nrog kev sib xwskev ntsuas viscosity ntawm polymer yajhla cov dej ntws, ua kom muaj kev ua raws li txoj cai hauv kev tswj cov txheej txheem. Hauv kev txhaj tshuaj molding ceev ceev, kev hloov kho tes ua tsis tau raws li lub sijhawm voj voog sai, muaj kev pheej hmoo ntawm kev sib txhuam lossis kev sau tsis tiav. Cov teeb meem no qhia txog qhov xav tau kev ua haujlwm siab heevpolymer viscometercov kab ke, xws li covtsis siv neeg polymer viscometer, los muab cov ntaub ntawv tiag tiag thiab kov yeej cov kev txwv ntawm cov txheej txheem ib txwm muaj.

Vim Li Cas Kev Soj Ntsuam Qhov Yaj Viscosity Tseem Ceeb

Kev ntsuas qhov viscosity ntawm yaj yog qhov tseem ceeb hauv cov txheej txheem polymer extrusion thiab kev txhaj tshuaj molding rau ntau yam laj thawj. Hauv extrusion, qhov viscosity ntawm yaj sib xws ua kom muaj kev sib npaug ntawm cov pwm thiab tiv thaiv cov qhov tsis zoo xws li qhov tsis sib xws ntawm qhov chaw lossis qhov o ntawm cov pwm. Hauv kev txhaj tshuaj molding, nws cuam tshuam rau kev sau pwm, qhov zoo ntawm ib feem, thiab lub sijhawm voj voog, qhov twg kev hloov pauv tuaj yeem ua rau muaj kev sib tsoo lossis kev sau tsis tiav. Kev saib xyuas lub sijhawm tiag tiag tso cai rau cov neeg ua haujlwm kho qhov kub, siab, lossis cov khoom sib xyaw ntawm cov khoom siv, ua kom zoo dua kev siv hluav taws xob thiab txo cov khib nyiab - qhov kev txhawj xeeb tseem ceeb raws li cov cai carbon nruj dua hauv xyoo 2025.

Qhov nyuaj ntawm kev ntsuas viscosity ntawm polymer yaj tshwm sim los ntawm qhov xwm txheej tsis yog Newtonian ntawm polymer yaj, qhov twg viscosity sib txawv nrog shear rate thiab thermal history. Cov kab ke ntawm cov kab ke inline polymer-melt viscometer daws qhov no los ntawm kev muab cov ntaub ntawv txuas ntxiv mus, ua kom muaj kev tswj hwm cov txheej txheem uas cov txheej txheem offline tsis tuaj yeem phim.

Lonnmeter txoj kev txawj ntse hauv kev soj ntsuam viscosity yaj

Nrog ntau tshaj kaum xyoo ntawm kev paub dhau los,Lonnmeter, ib tug thawj cojtus neeg muag khoom polymer viscometer, tau tsim nws tus kheej ua tus thawj coj hauvkev soj ntsuam viscosityLawv txoj kev txawj ntse suav nrog cov kab extrusion siab, kub siab thiab cov chaw txhaj tshuaj molding, daws cov kev xav tau ntawm ntau yam polymers xws li polyethylene, polypropylene, thiab PET.

Cov Kev daws teeb meem khoom

Lonnmeter muab cov khoom siv tshiab tshaj plawspolymer yaj viscometercov kev daws teeb meem uas tsim los raukev soj ntsuam viscosity yaj. LubInline Viscometeryog tsim los rau kev teeb tsa perpendicular lossis parallel hauv cov tshuab extrusion, ntsuasyaj viscositytxog li 100,000 cP·s thiab qhov kub txog li 300°C, tsis cuam tshuam los ntawm kev hloov pauv ntawm cov dej ntws.

Kev kho kom haum yog ib qho cim ntawm Lonnmeter cov khoom, nrog rau kev xaiv rau kev sib txuas threaded lossis flanged thiab cov ntaub ntawv tso tawm ntawm 4-20mA lossis RS485, sib koom ua ke nrog cov tshuab automation. Hauv extrusion, qhov teeb tsa perpendicular ua kom muaj kev cuam tshuam tsawg kawg nkaus.

Cov txiaj ntsig ntawm Lonnmeter's Melt Viscosity Solutions

Kev Tswj Xyuas Zoo:Lub sijhawm tiag tiagkev ntsuas viscosity ntawm polymer yajua kom cov extrudates thiab cov khoom molded tsis muaj qhov tsis zoo.
Kev Siv Nyiaj Zoo:Txo cov khib nyiab thiab kev txij nkawm txo cov nqi ua haujlwm.
Kev Txuag Hluav Taws Xob:Kev hloov kho kom raug zoo tshaj plaws.
Kev Yooj Yim ntawm Cov Txheej Txheem:Kev sib raug zoo nrog ntau yam polymers txhawb nqa ntau yam kev xav tau ntawm kev tsim khoom.

Kev Nyab Xeeb Zoo Dua:Kev kuaj pom thaum ntxov ntawm cov teeb meem viscosity tiv thaiv kev ntxhov siab ntawm cov khoom siv.

Cov Lus Nug Feem Ntau

Vim li cas qhov viscosity ntawm yaj thiaj tseem ceeb dua li qhov kub lossis siab?

Qhov viscosity ntawm cov yaj cuam tshuam ncaj qha rau cov dej ntws ntawm cov yaj, kev sau cov pwm, thiab kev sib xws ntawm cov khoom, feem ntau ntau dua li qhov cuam tshuam ntawm qhov kub thiab txias lossis siab. Kev ntsuas qhov viscosity ntawm cov polymer yaj kom zoo tiv thaiv cov qhov tsis zoo xws li kev warpage lossis swell ntawm cov pwm, ua rau nws tseem ceeb rau kev tswj cov txheej txheem.

Lonnmeter ua li cas thiaj ua kom cov ntaub ntawv sib koom ua ke?

Lub tshuab ntsuas polymer viscometer tsis siv neeg sib txuas ua ke ntawm 4-20mA lossis RS485 cov txheej txheem, muab cov ntaub ntawv tiag tiag rau cov kab ke tswj hwm. Nws cov keeb kwm hauv lub nkoj, nkag tau los ntawm software, muab cov kev nkag siab keeb kwm, dhau qhov kev txwv ntawm cov polymer viscometer ib txwm muaj.

Cov yam dab tsi cuam tshuam rau qhov viscosity ntawm cov polymers?

Qhov viscosity ntawm cov polymers yaj yog cuam tshuam los ntawm qhov hnyav molecular, kub, shear rate, thiab qhov muaj cov additives lossis fillers. Qhov hnyav molecular siab dua thiab qhov kub qis dua feem ntau ua rau viscosity nce, cuam tshuam rau cov txheej txheem polymer extrusion.

Kev soj ntsuam viscosity yaj yog lub hauv paus tseem ceeb ntawm cov txheej txheem polymer extrusion thiab kev txhaj tshuaj molding, ua kom zoo thiab ua haujlwm tau zoo. Nrog Lonnmeter qhov kev txawj ntse tau ua pov thawj thiab cov viscometer siab heev rau cov polymers, cov chaw tsim khoom tuaj yeem kov yeej cov teeb meem hauv kev tswj cov txheej txheem thiab ua kom zoo dua qub. Thov kom muaj tus nqi hnub no los ntawm tus neeg muag khoom polymer viscometer ntseeg siab no!

Ua Haujlwm Tam Sim No

Lub sijhawm tshaj tawm: Lub Xya Hli-31-2025