Sib tov methylcellulose yuav tsum ua tib zoo mloog kom meej thiab muaj kev yoog raws li cov txheej txheem qhia tshwj xeeb kom ua tiav cov kev xav tau zoo thiab cov khoom. Methylcellulose yog qhov sib txawv ntawm cov khoom lag luam, suav nrog cov khoom noj muaj nyob rau hauv ntau yam khoom noj, chaw muag tshuaj, thiab kev tsim kho, vim nws cov thickening, thiab steeilizing tej yam. Txawm hais tias koj siv nws rau kev ua noj ua haus, raws li kev tsim kho cov kws kho mob, lossis hauv cov cuab yeej tsim kho, kev sib xyaw ua ke yog qhov tseem ceeb los ua kom ntseeg tau zoo.
Nkag siab methylcellulose:
Methylcellulose yog ib qho tseem ceeb ntawm cellulose, lub ntuj polymer pom hauv cov nroj tsuag. Los ntawm kev hloov kho tshuaj lom neeg, methylcellulose tsim tawm, muab nws nrog cov khoom tshwj xeeb xws li:
Thickening: methylcellulose tuaj yeem ua kom nce viscosity ntawm cov kev daws teeb meem, ua rau nws muaj txiaj ntsig hauv cov ntawv thov cov neeg sawv cev.
Dej khaws cia: nws ua kom cov khoom siv tsis tau zoo, tseem ceeb rau kev tswj kom noo noo hauv ntau yam khoom.
Zaj duab xis tsim: Methylcellulose tuaj yeem tsim cov yeeb yaj kiab thaum qhuav, ua rau nws muaj txiaj ntsig hauv cov txheej txheem thiab cov nplaum.
Stabilization: nws ruaj ruaj emulsions thiab ncua kev tawm tsam, tiv thaiv kev sib cais ntawm cov khoom sib cais.
Sib tov methylcellulose:
1. Xaiv txoj cai hom:
Methylcellulose muaj nyob rau hauv ntau qib thiab viscosities, nyob ntawm cov ntawv thov. Xaiv cov hom uas tsim nyog raws koj cov kev xav tau, xav txog yam xws li xav tau viscosity, khaws dej cia, thiab qhov kub thiab txias.
2. Npaj txoj kev daws teeb meem:
Cov txheej txheem sib xyaw feem ntau yog cuam tshuam nrog metric metylcellulose hmoov hauv dej. Ua raws cov kauj ruam no rau npaj cov kev daws teeb meem:
a. Qhov hnyav: ntsuas qhov uas yuav tsum muaj ntawm methylcellulose hmoov kom raug siv nplai.
b. Dej kub: Thaum methylcellulose tuaj yeem yaj hauv ob qho dej txias thiab dej kub, siv dej sov (nyob ib ncig ntawm 40-50 ° C) tuaj yeem ua tiav cov txheej txheem sib cais.
c. Ntxiv methylcellulose: maj tsuag sprinkle lub methylcellulose hmoov rau hauv dej thaum nplawm.
d. Kev sib xyaw: txuas ntxiv stirring kom txog thaum lub methylcellulose hmoov yog tag nrho dispersed thiab tsis muaj qog nyob. Txoj kev no yuav siv sijhawm ob peb feeb.
e. Lub Sij Hawm So: Tso cai rau kev daws kom so rau kwv yees li 30 feeb los xyuas kom tiav cov dej ua tiav thiab viscosity.
3. Kho raws li:
Nyob ntawm seb cov khoom lag luam zoo li zaum kawg ntawm cov khoom kawg, koj yuav tsum tau hloov kho cov kev xav ntawm methylcellose hauv kev daws. Rau cov tuab tuab, nce tus nqi ntawm methylcellulose, thaum lub sij hawm rau ib thinner sib xws, dilute cov kev daws teeb meem nrog dej ntxiv.
4. Qhov kub siab xav:
Methylcellulose kev daws teeb meem kev nthuav dav kub-nyob viscosity. Siab dua kub kom txo viscosity, thaum qis dua kub nce ntxiv. Xav txog cov kev npaj thov thiab kho cov kev daws qhov kub thiab txias kom ua tau cov viscosity xav tau.
5. Sib xyaw nrog lwm cov khoom xyaw:
Thaum sib txuam nrog methylcellulose rau cov formulations muaj lwm cov khoom xyaw, ua kom meej kev sib xyaw kom ua tiav homogeneity. Qhov no yog tshwj xeeb tshwj xeeb hauv cov zaub mov thiab cov ntawv thov tshuaj yuav ua kom muaj kev ntxhib los mos thiab ua tau zoo.
Daim ntawv thov tshwj xeeb cov lus qhia tshwj xeeb:
A. Ua cov ntawv thov ua noj:
Methylcellulose pom tau dav siv nyob rau hauv kev ua noj ua haus hauv kev lag luam rau ntau lub hom phiaj, suav nrog cov kua qaub tuab, ruaj khov, thiab tsim cov kua txiv. Ua raws li cov lus qhia ntxiv rau kev siv ua noj:
Kev ntxhib los mos optimization: kev sim nrog cov methylcellulose los ua kom tiav cov kev xav tau thiab qhov ncauj xav tau cov tais diav.
Hydration lub sijhawm: pub lub sijhawm muaj dej txaus txaus rau lub methylcellulose tov ua ntej sib koom ua ntej los xyuas kom meej cov khoom siv thickening.
Kev tswj qhov kub thiab txias: tswj qhov kub thiab txias thaum ua cov txheej txheem ua noj, ua kom sov ntau dhau tuaj yeem txwv lub viscosity ntawm kev daws teeb meem.
B. Daim ntaub ntawv thov tshuaj:
Hauv cov tshuaj ntawm cov tshuaj, methylcelulose pab ua cov phau ntawv, ua tsis taus, lossis tswj-tso tawm tus neeg sawv cev. Xav txog cov hauv qab no thaum sib tov methylcellulose rau cov tshuaj siv:
Qhov loj me me txo: Xyuas kom meej tias cov methylcellulose hmoov yog finely milled los pab txhawb kev sib cais ntawm cov qauv.
Kev xeem sib xws: Kev kawm kev sib raug zoo nrog lwm cov khoom siv kom zoo thiab nquag ua kom muaj kev ruaj ntseg thiab cov khoom lag luam kawg.
Kev Tswj Xyuas Ncaj Ncees: Ua rau cov qauv kev cai tswj hwm thiab cov qauv kev tswj hwm kev siv methylcellulose hauv cov tshuaj yeeb zoo.
C. Kev Tsim Kho Khoom:
Methylcellulose siv nyob rau hauv cov khoom siv tsim kho nyob rau hauv cov ntaub ntawv tsim kho xws li Mortars, plasters, thiab pobzeb cov khoom noj rau nws cov dej ua kom huv thiab thickenies. Xav txog cov hauv qab no thaum sib tov methylcellose rau kev siv cov ntawv thov:
Kev tswj raws li kev tswj: hloov cov kev xav ntawm methylcellulose hauv kev daws teeb meem kom ua tiav qhov kev xav tau thiab ua haujlwm ntawm cov khoom siv kev tsim kho.
Nws cov cuab yeej sib xyaw: siv cov khoom siv tsim nyog, xws li cug tov khoom siv lossis tshuaj khib Mixers, kom paub meej tias muaj kev tawg ntawm methylcellulose hauv kev tsim.
Kev ntsuas kev ua tau zoo: Siv kev tswj zoo kom saib xyuas kev ua tau zoo ntawm methylcellulose-muaj lub zog siv, suav nrog lub zog tsim kho, dej tsis kam, thiab teeb sijhawm.
Kev Ceev Fwm Kev Nyab Xeeb:
Thaum tuav methylcellulose, saib xyuas cov hauv qab no kev ceev faj hauv qab no kom txo qis kev phom sij:
Cov iav tiv thaiv: Hnav cov khoom tiv thaiv tus kheej tsim nyog, suav nrog hnab looj tes uas hnab looj tes thiab kev tiv thaiv kev nyab xeeb, kom tiv thaiv daim tawv nqaij thiab qhov muag khaus.
Qhov cua: Ua kom muaj kev tso pa kom txaus hauv thaj chaw sib xyaw los tiv thaiv kev nqus pa ntawm cov pa.
Cia: Muab methylcellulose hmoov nyob rau hauv qhov chaw txias, qhuav qhov chaw kom deb ntawm cov khoom cua sov thiab noo noo kom tiv thaiv kev tsis yeem.
Pov tseg: pov tseg ntawm tsis siv lossis tas sij hawm methylculose cov khoom raws li cov cai thiab cov lus qhia hauv zos.
Xaus:
Txawm hais tias siv nyob rau hauv kev ua noj ua haus cov ntaub ntawv, cov kws kho mob tsim kho, ua kom tsim nyog ua kom zoo kom qhib lub peev xwm ntawm methylcellose. Los ntawm kev ua raws cov txheej txheem pom zoo thiab ceev faj kev ceev faj ntawm cov lus qhia no, koj tuaj yeem ua kom muaj peev xwm ua tau zoo ntawm methylcellulose los ua tiav cov txiaj ntsig zoo hauv koj cov phiaj xwm.
Lub Sijhawm Post: Mar-12-2024