1. Dab tsi yog hydroxypropy kasthylulose?
HydroxyPropyyl Methylcellulose (HPMC)Yog cov tsis muaj tshuaj lom thiab muaj kev puas tsuaj tsis muaj teeb meem ether, siv dav hauv cov khoom siv hauv tsev, tshuaj, tshuaj pleev ib ce thiab lwm thaj teb. Nws muaj cov haujlwm ntawm cov thickening, zaj duab xis, kev sib koom tes thiab tuaj yeem yaj hauv dej los ua cov tshuaj uas muaj kuab.
2. Cov kev siv ntau thiab siv HPMC
Siv teb
HPMC feem ntau siv hauv kev tsim cov ntaub ntawv xws li cement cug, ua rau cov hmoov xis, ua kom muaj hmoov av, thiab lwm yam.
Muaj nuj nqi: txhim kho kev tsim kho kev tsim kho, txhim kho cov dej khaws cia, sijhawm qhib ncua sijhawm, thiab ua kom tau kev ua tau zoo.
Txoj kev siv:
Ntxiv ncaj qha rau qhuav-mix cug, cov kev pom zoo tau yog 0.1% ~ 0.5% ntawm qhov loj ntawm cement lossis substrate;
Tom qab tag nrho nplawm, ntxiv dej thiab do rau hauv slurry.
Kev Lag Luam Khoom Noj
HPMC tuaj yeem raug siv los ua cov tuab, stabilizer thiab emulsifier, thiab feem ntau pom nyob rau hauv cov zaub mov xws li cov mis nyuj khov, ncuav, khob cij, thiab lwm yam.
Muaj nuj nqi: Txhim kho saj, ruaj khov lub system, thiab tiv thaiv stratification.
Kev siv:
Dissolve hauv dej txias, cov tshuaj pom zoo muab kho tau ntawm 0.2% thiab 2% raws li hom khoom noj;
Cua sov lossis tshuab siv zog tuaj yeem nrawm qhov kawg.
Kws Tshuaj Kho Mob
HPMC feem ntau siv hauv cov tshuaj ntsiav tshuaj kho cov txheej, txhawb nqa cov ntsiav tshuaj lossis lub hau capsule:
Muaj nuj nqi: Zaj duab xis tsim, ncua kev tso yeeb tshuaj, thiab tiv thaiv cov tshuaj tsis zoo.
Kev siv:
Npaj ua kev daws teeb meem nrog kev xav ntawm 1% rau 5%;
Txau tusyees ntawm lub ntsiav tshuaj los ua ib zaj duab xis nyias.
Tshuaj pleev ib ce
HPMCyog siv los ua cov tuab yaj ntaub, emulsion stabilizer lossis zaj duab xis-ua tus neeg sawv cev, siv hauv ntsej muag ntsej muag, muaj ntau yam.
Muaj nuj nqi: Txhim kho kev ntxhib los mos thiab txhim kho cov kev xav ntawm cov khoom.
Kev siv:
Ntxiv rau cov tshuaj pleev ib ce kom zoo nkauj hauv kev faib ua feem thiab do tusyees;
Qhov ntau npaum li cas yog feem ntau 0.1% rau 1%, kho raws li cov khoom yuav tsum tau ua.
3. HPMC Daim Ntawv Tshaj Tawm
Lub solubility ntawm HPMC tau cuam tshuam heev los ntawm dej kub:
Nws yog ib qho yooj yim kom yaj hauv dej txias thiab tuaj yeem tsim cov tshuaj tsis zoo;
Nws yog insoluble nyob rau hauv dej kub, tab sis tuaj yeem raug xa tawm thiab ua ib qho colloid tom qab txias.
Cov kauj ruam tshwj xeeb:
Sprinkle HPMC maj mam rau hauv dej, zam kev ncaj qha rau kev tiv thaiv kev ua tsis taus;
Siv tus stirrer mus xyaw tusyees;
Kho cov kev daws teeb meem raws li xav tau.
4. Kev ceev faj rau kev siv HPMC
Kev tswj ntau tshuaj tswj: Hauv cov ntawv thov sib txawv, cov nqi tshuaj ncaj qha cuam tshuam rau kev ua tau zoo thiab xav tau kev sim raws li cov kev xav tau.
Kev Cia Yuav Tsum: Nws yuav tsum khaws cia rau hauv qhov chaw txias, qhuav, qhov chaw muaj cua kom tsis txhob ya raws thiab kub.
Kev tiv thaiv ib puag ncig: HPMC yog biodegradable thiab tsis yog qias neeg ib puag ncig, tab sis nws tseem yuav tau siv ua qauv kom tsis txhob muaj pov tseg.
Kev xeem sib xws: thaum ntxiv rau cov tshuab ua kom haum (xws li tshuaj pleev ib ce lossis tshuaj pleev ib ce), sib xyaw nrog lwm cov khoom xyaw yuav tsum tau kuaj.
5. Qhov zoo ntawm HPMC
Tsis-lom, ib puag ncig phooj ywg, muaj kev nyab xeeb siab;
Versatility, hloov tau rau ntau cov ntawv thov kev thov;
Kev ruaj khov zoo, tuaj yeem khaws cia kev ua tau ntev ntev.
6. Cov teeb meem sib txawv thiab cov kev daws teeb meem
Agglomeration Teeb meem: Them sai sai rau dispersed ntxiv rau thaum lub sij hawm siv thiab do tib lub sijhawm.
Lub sijhawm ua tiav ntev: Cov dej kub pretreatment lossis tshuab stirring tuaj yeem siv los ua kom nrawm dua kev ua kom nrawm.
Kev ua tau zoo: Ua tib zoo saib rau qhov chaw cia kom tsis txhob ya raws thiab kub.
Los ntawm kev siv HPMC kev tshawb fawb thiab rationally, nws cov yam ntxwv ntau heev tuaj yeem siv tau los muab cov kev daws teeb meem zoo rau ntau yam kev lag luam.
Lub Sijhawm Post: Dec-10-2024