Kev ntsuas viscosity ntawm Polymeter tuaj yeem ua rau tag nrho cov txheej txheem tsim khoom ntawm kev tsim cov PET. Rau cov neeg uas nyob hauv kev lag luam PET, kev hloov pauv ntawm cov txheej txheem tes ua haujlwm nyuaj mus rau cov thev naus laus zis inline tshiab yog qhov tseem ceeb rau kev ua haujlwm zoo, zoo, thiab kev ruaj khov.Lonnmeter Tuning Fork Viscometertshwm sim ua tus hloov pauv kev ua si, muab cov kev nkag siab tiag tiag rau hauvpolymer viscosityuas ua rau cov chaw tsim khoom muaj peev xwm ua kom zoo dua txhua yam ntawm lawv cov haujlwm.
Qhov Tseem Ceeb ntawm Kev Ntsuas PET Viscosity
Lubviscosity ntawm polymerzoo li PET tsis yog ib tus lej xwb, uas qhia txog seb cov polymer molten ntws li cas, cov fwj tuav lawv cov duab li cas, lossis cov fibers tswj lawv lub zog li cas.kev ntsuas qhov viscosity ntawm polymerua kom koj cov khoom PET ua tau raws li cov qauv nruj rau kev ruaj khov, kev meej, thiab kev ua tau zoo thoob plaws cov ntawv thov xws li ntim khoom, ntaub, thiab cov yas engineering. Los ntawm kev siv cov cuab yeej ntsuas viscosity inline intrinsic, koj tau txais lub peev xwm los tiv thaiv qhov tsis zoo, txo cov khib nyiab, tshwj xeeb tshaj yog thaum siv cov PET rov ua dua tshiab (rPET).
Polyethylene Terephthalate yog dab tsi?
Polyethylene terephthalate, lossis PET, yog ib hom thermoplastic polyester uas yug los ntawm polycondensation ntawm terephthalic acid thiab ethylene glycol, uas tau ua kev zoo siab rau nws cov khoom sib xyaw zoo heev. Nws lub zog tiv thaiv cov pa roj thiab dej noo, ua ke nrog lub zog siab thiab kev pom tseeb, ua rau nws yog cov khoom siv xaiv rau txhua yam los ntawm cov fwj dej haus mus rau cov khoom siv tsheb.Qhov viscosity ntawm PETncaj qha cuam tshuam nrog nws qhov hnyav molecular, txiav txim siab seb nws puas haum rau cov ntaub textile fibers uas tsis muaj viscosity (0.4–0.7 dL/g) lossis cov qib raj mis uas muaj viscosity siab (0.7–0.85 dL/g). Raws li qhov ntev ntawm cov saw hlau loj hlob thaum lub sijhawm tsim khoom, yog li ntawdviscosity ntawm polymer, tsim nws cov txheej txheem ua tau thiab ua kom muaj kev siv tau raws li ntau yam kev xav tau ntawm kev lag luam, suav nrog kev sib koom ua ke ntawm cov khoom siv rov ua dua tshiab.
Dab tsi yog qhov Intrinsic Viscosity ntawm PET
LubQhov viscosity ntawm PETyog ib qho tseem ceeb metric uas cais cov polymer lub molecular kev koom tes rau tus cwj pwm ntws, qhia hauv deciliters ib gram (dL / g). Nws qhia txog qhov ntim hydrodynamic ntawm PET saw hauv cov kua dilute, ua haujlwm ua tus qhia txog qhov hnyav molecular tsis muaj cov teebmeem confounding ntawm concentration. Piv txwv li, textile qib feem ntau yog txij li 0.4 txog 0.7 dL / g, thaum engineering plastics xav tau 1.0 txog 2.0 dL / g. Cov parameter no coj cov processors hauv kev kwv yees tus cwj pwm yaj, lub zog kho tshuab, thiab kev haum rau cov ntawv thov tshwj xeeb. Kev hloov pauv hauv crystallinity lossis degradation tuaj yeem skewQhov viscosity ntawm PET, ua rau kev ntsuas kom meej yog qhov tseem ceeb rau kev ua kom muaj kev sib xws hauv cov dej PET tshiab thiab cov dej PET rov ua dua tshiab, tiv thaiv cov khoom zoo thiab kev ntseeg siab ntawm cov txheej txheem.
intrinsic viscosity ntawm tsiaj
Kev ntsuas viscosity ntawm PET nyob ntawm nws daim ntawv thov
Yuav Ua Li Cas Ntsuas Qhov Intrinsic Viscosity ntawm PET Tsis Tu Ncua
Kev ntsuas qhov viscosity tiag tiag ntawm PET hloov pauv los ntawm txoj kev ua haujlwm ntau dhau mus rau txoj kev ua haujlwm tas mus li, muab lub qhov rais tiag tiag rau hauv cov txheej txheem polymerization. Ib txwm muajdilute solution viscosity ntawm polymerskev sim, siv cov iav capillary viscometers, yuav tsum tau npaj cov qauv tes thiab cov kuab tshuaj ntau, ua rau qeeb qeeb.
Hauv kabcov khoom siv ntsuas viscometers, zoo li Lonnmeter, hloov pauv qhov no los ntawm kev koom ua ke ncaj qha rau hauv reactors lossis extrusion kab, ntsuaspolymer viscosityntawm kev hloov pauv zaus resonant hauv lub sensor tuning fork. Cov qauv me me raug tshuaj xyuas tas li, nrog rau cov piv txwv viscosity sib piv thiab kwv yees rauQhov viscosity ntawm PETsiv cov qauv zoo li Solomon-Ciutà equation. Kev them nyiaj kub ua kom muaj qhov tseeb, tso cai rau cov neeg teb xov tooj hloov kho cov kev ntsuas tshuaj tam sim ntawd, txhim kho kev tswj hwm qhov hnyav molecular thiab kev ruaj khov ntawm cov txheej txheem.
Cov Teeb Meem Hauv Kev Ntsuas PET Viscosity
Kev Ntsuaspolymer viscosityHauv kev tsim khoom PET muaj ntau yam teeb meem uas xav tau cov kev daws teeb meem zoo. PET rov ua dua tshiab (rPET) ua rau muaj kev hloov pauv vim yog kev nrhiav tsis sib xws, ua rau muaj kev tsis sib xwsviscosity ntawm polymerkev nyeem ntawv uas tuaj yeem cuam tshuam kev ua tiav. Cov qib siab-crystallinity xav tau kev yaj ntawm qhov kub siab tshaj 100 ° C, uas muaj kev pheej hmoo ntawm kev txiav thiab kev puas tsuaj uas skewQhov viscosity ntawm PETcov txiaj ntsig. Ib txwm muajdilute kua viscosityCov txheej txheem tsis yog tsuas yog siv sijhawm ntau xwb tab sis kuj ua rau cov neeg teb xov tooj raug rau cov kuab tshuaj txaus ntshai xws li phenol lossis tetrachloroethane, ua rau muaj kev pheej hmoo kev nyab xeeb. Tsis tas li ntawd, kev sib txuas ntawm cov kua viscosity rau cov viscosity yaj nyob rau hauv cov txheej txheem ua haujlwm siab-shear tseem nyuaj, thaum cov dej noo ua rau hydrolysis tuaj yeem txo qhov viscosity ntxiv, ua rau kev tswj hwm zoo nyuaj. Cov teeb meem no qhia txog qhov xav tau rau cov tshuab ua haujlwm tsis siv neeg, inline los xa cov ntaub ntawv txhim khu kev qha, lub sijhawm tiag tiag.
- Kev hloov pauv hauv rPET: Cov peev txheej sib txawv ua rau muaj kev tsis sib xwspolymer viscosity, kev sib xyaw ua ke nyuaj.
- Kev puas tsuaj ntawm thermalKub yaj siab yuav txo qis kev pheej hmooQhov viscosity ntawm PETlos ntawm kev txiav cov saw hlau.
- Kev phom sij ntawm cov kuab tshuajPhau Ntawv Qhiadilute solution viscosity ntawm polymerskev kuaj mob ua rau muaj kev phom sij rau cov tshuaj lom.
- Lub sijhawm tsis ua haujlwm zooCov txheej txheem ib txwm ua rau qeeb qeeb kev tshuaj xyuas, ncua kev hloov kho cov txheej txheem.
- Kev vam khom ntawm kev txiav: Qhov sib txawv ntawm cov kua thiab cov viscosity yaj ua rau cov lus kwv yees nyuaj.
- Kev rhiab heev rau dej noo: Hydrolysis thaum lub sij hawm extrusion txo qisviscosity ntawm polymer, cuam tshuam rau qhov zoo.
- Kev tswj kubKev them nyiaj kom raug yog qhov tseem ceeb heev kom tsis txhob muaj qhov yuam kev ntsuas.
Vim li cas kev soj ntsuam Viscosity hauv online thiaj tseem ceeb rau kev tsim cov PET?
Kev saib xyuas online tas mus li ntawmpolymer viscosityhloov pauv PET synthesis los ntawm kev muab cov khoom noj khoom haus ntawm qhov hnyav molecular dynamics, ua rau muaj kev tswj hwm meej uas kev sim ua pawg tsis tuaj yeem phim. Txoj hauv kev no ua kom ntseeg tau tias txhua theem ntawm polymerization - los ntawm monomer reaction mus rau kev ua cov txheej txheem yaj - sib phim nrog cov lus qhia tshwj xeeb, txo qis qhov sib txawv uas yuav ua rau cov khoom zoo. Los ntawm kev koom ua keinline viscometer polymer, cov chaw tsim khoom qhib cov txiaj ntsig uas ua rau muaj kev ua haujlwm zoo, kev nyab xeeb, thiab kev ruaj khov, ua rauYuav ua li cas ntsuas qhov viscosity ntawm PETqhov zoo dua ntawm kev tsim khoom niaj hnub.
- Kev tswj cov txheej txheem zoo dua los ntawm kev tshuaj xyuas zoo dua: Lub sijhawm tiag tiagkev ntsuas qhov viscosity ntawm polymertso cai rau kev hloov kho tam sim ntawd rau cov xwm txheej ntawm kev ua teb, ua kom muaj kev loj hlob ntawm cov saw hlau.
- Zoo dua cov khoom zoo thiab tsawg dua kev pov tsegKev kuaj pom thaum ntxov ntawm cov viscosity anomalies txo cov batches tawm-spec, txhawb cov qoob loo thiab txo cov khoom poob.
- Txo kev siv hluav taws xob: Cov kev teeb tsa zoo tshaj plaws tiv thaiv kev ua tiav ntau dhau, txo kev siv hluav taws xob hauv cov reactors thiab extruders.
- Kev nyab xeeb ntawm cov neeg ua haujlwm ntau ntxivCov txheej txheem tsis siv neeg txo qhov kev siv cov tshuaj yaj kub thiab cov tshuaj lom, ua kom muaj kev nyab xeeb hauv chaw ua haujlwm.
- Kev teb sai rau kev chim siab: Cov voj voog tawm tswv yim tam sim ntawd ua rau kev kho sai, tswj kev ntws ntau lawm.
- Kev txhawb nqa rau kev koom ua ke rPET: Kev saib xyuas tas mus li xyuas kom meejviscosity ntawm polymerhauv cov kwj dej rov ua dua tshiab, xyuas kom meej tias muaj kev sib raug zoo.
- Kev siv nyiaj kom zooKev tshuaj xyuas hauv chaw kuaj tsawg dua ua rau kev ua haujlwm yooj yim dua, txo cov nqi siv.
Kawm Txog Ntau Cov Ntsuas Qhov Ceev
Ntau Cov Txheej Txheem Online
Lonnmeter Tuning Fork Viscometer
LubLonnmeter Tuning Fork Viscometeryog tsim los daws cov kev xav tau ntawmkev ntsuas qhov viscosity ntawm polymerHauv kev tsim PET, xa cov kev ua haujlwm raug thiab ruaj khov tsis muaj qhov sib piv. Nrog rau qhov ntau ntawm viscosity ntawm 1 txog 8,000 cP, qhov tseeb ntawm ± 3.0%, thiab rov ua dua ntawm ± 1%, nws ua haujlwm hauv qab qhov siab txog li 6.4 MPa thiab qhov kub txog li 450 ° C, nyob hauv lub thawv IP66-rated powered los ntawm 24 V DC. Nws cov zis 4-20 mA DC, tsim los ntawm cov ntaub ntawv ruaj khov xws li 316L stainless hlau, Teflon, lossis Hastelloy, thiab ua raws li HG20592 flange qauv, ua kom muaj kev sib koom ua ke rau hauv kev teeb tsa kev lag luam. Daim ntawv pov thawj tawg-pov thawj (ExdIIBT4), nws teb hauv 5 vib nas this xwb, ua rau nws zoo tagnrho rau lub sijhawm tiag tiag.viscosity ntawm polymerkev saib xyuas.
Lub viscometer no siv lub teeb liab acoustic los ua kom lub hlau tuning diav rawg co, uas co ntawm nws qhov zaus resonant ntuj - qhov zaus khi ncaj qha rauviscosity ntawm polymernyob rau hauv kev sib cuag nrog nws. Kev tshuaj xyuas zaus siab heev, ua ke nrog kev them nyiaj kub, xa cov lus qhia meejpolymer viscositykev nyeem ntawv, tiv thaiv kev hloov pauv cua sov uas yuav ua rau cov txiaj ntsig tsis sib xws. Cov thev naus laus zis no ua kom muaj kev ua tau zoo hauv cov xwm txheej nyuaj ntawm PET synthesis, los ntawm cov reactors molten mus rau cov extruders siab-shear.
Cov txiaj ntsig ntawm Inline Viscometer
Kev txais yuav lub inline viscometer zoo li Lonnmeter txhais dua tshiabYuav ua li cas ntsuas qhov viscosity ntawm PET, muab kev dhia mus rau pem hauv ntej hauv kev ua haujlwm zoo thiab kev ntseeg siab piv rau cov qauv ib txwm muajdilute solution viscosity ntawm polymerscov txheej txheem. Los ntawm kev muab cov ntaub ntawv tas mus li, lub sijhawm tiag tiag, nws txhawb nqa cov chaw tsim khoom kom ua tiav cov txheej txheem, txo cov khib nyiab, thiab txhim kho cov khoom zoo, thaum ua raws li cov hom phiaj kev ruaj khov los ntawm kev koom ua ke rPET zoo.
- Kev tshuaj xyuas sai duaTxo lub sijhawm ntsuas piv rau kev siv tes uadilute kua viscositycov txheej txheem.
- Siv cov kuab tshuaj tsawg dua: Txo cov khib nyiab, txo cov kev cuam tshuam rau ib puag ncig.
- Tsim qauv ruaj khovTiv thaiv kom tsis txhob muaj kev thaiv cov dej ntws ntawm PET uas nplaum, ua kom lub sijhawm ua haujlwm tau.
- Kev ua kom raug siab: Ua tiav RSD qis dua 1% rau kev txhim khu kev qhapolymer viscositycov ntaub ntawv.
- Daim ntawv thov ntau yam: Ua tau yooj yim rau kev tuav ob qho tib si PET tshiab thiab cov PET rov ua dua tshiab.
- Kev txuag nqiTxo cov khoom tsis raws li qhov tau teev tseg thiab cov nqi kuaj hauv chaw kuaj mob.
- Kev txhawb nqa kev ruaj khov: Txhawb kev siv rPET ntau dua nrog kev tswj xyuas zoo tas li.
Vim li cas ho xaiv cov phau ntawv qub qub, phau ntawv qhiakev ntsuas qhov viscosity ntawm polymerthaum koj tuaj yeem siv lub zog ntawm lubLonnmeter Tuning Fork Viscometer? Txhim kho koj cov txheej txheem nrog kev ua haujlwm raug tiag tiag, txo cov khib nyiab, thiab kev nyab xeeb zoo dua. Tiv tauj peb tam sim no kom paub seb cov thev naus laus zis no tuaj yeem hloov pauv koj cov khoom PET li cas, kom ntseeg tau tias muaj txiaj ntsig zoo thiab ua haujlwm tau zoo. Ua hnub no - koj qhov kev vam meej tom ntej tos koj!
