Lub tsev tshwj xeeb hydroxypropyl cellulose kom tsis txhob ya raws li cov pahropropyl me me tuaj yeem ua rau lub volfosity, Qhov siab tshaj lub viscosity ntawm hydroxypropyl methylropyyl methyl cellulose dej khaws cia yuav zoo dua.
Thaum noo noo ntawm hydroxypropyl cellulose yog qhov siab dhau ntawm hydroxyprropy cellwsyy ntawm hydroxyprropy cellulose. Peb kuj tau paub txog tej yam yuav yooj yim dua los ua yuam kev, peb yuav tsum nco ntsoov khaws cia tshiab, peb yuav tau txais cov txiaj ntsig uas tsis tuaj yeem xav tau.
Lub meej viscosity yog qhov tseem ceeb ntsuas ntawm hydroxypropyl methyl cellulose. Txoj kev ntsuas ib txwm muaj kev ntsuas viscrior, capillary viscosity ntsuas ntsuas thiab caij nplooj zeeg viscosity ntsuas.
Sij hawm dhau los, HydroxyPropyf methylropy cellulose tau txiav txim los ntawm capillary viscosity ntsuas kev ntsuas, siv Uhscher Vis. Cov kev ntsuas daws tau feem ntau yog cov tshuaj aqueous ntawm 2, thiab cov qauv yog: v = Kdt. V yog viscosity hauv vib nas this, K yog qhov tsis sib xws, d yog lub sijhawm tsis muaj qhov kub thiab txias, thiab t yog lub sijhawm uas nws yuav mus los ntawm sab saum toj ntawm cov vis hauv vibtes hauv vib nas this. Txoj kev ntawm kev ua haujlwm yog cov nyom ntau dua, yog tias muaj ib qho yooj yim rau kev ua yuam kev, nws yog qhov nyuaj rau kev txheeb xyuas qhov zoo ntawm hydroxyprropylulose.
Qhov teeb meem ntawm tsev kua nplaum stratification yog qhov teeb meem loj ntsib los ntawm cov neeg siv khoom. Ua ntej tshaj plaws, qhov teeb meem ntawm cov ntaub ntawv raw yuav tsum tau txiav txim siab rau lub tsev kua nplaum stratification. Qhov laj thawj tseem ceeb rau lub tsev kua nplaum stratification yog qhov tsis sib xws ntawm kev haus dej cawv (PVA) thiab hydroxypropylulose (HPMC). Qhov laj thawj thib ob yog tias lub sijhawm sib xyaw tsis txaus; Kuj tseem muaj lub tsev kua nplaum ua kom ua tau zoo tsis yog qhov zoo.
Hauv kev tsim cov nyom caj dab, tam sim ntawd hydroxypropyl methylulose (HPMC) yuav tsum tau siv vim HPMC tsuas yog dispersed hauv dej thiab tsis yaj tiag tiag. Txog 2 feeb, viscosity ntawm cov kua maj mam nce, kev sib sau pob tshab viscous colloid.
Cov kub soluble cov khoom, hauv dej txias, tuaj yeem nrawm nrawm rau hauv dej kub, thaum kub txav maj mam tshwm, kom txog thaum tsim ntawm pob tshab viscous colloid. HydroxyPropyyl methylcellueculose (HPMC) hauv cov tsev nplaum ua kom cov kua nplaum ntxiv rau 2-4kg.
HydroxyPropy cellulose (HPMC) nyob rau hauv lub tsev kua ntxwv ruaj khov, thiab tsis cuam tshuam los ntawm qhov pH hloov, viscosity los ntawm 100 000 s - 000 tuaj yeem siv. Tab sis nyob rau hauv kev tsim khoom tsis yog qhov ntau dua qhov zoo dua, lub zog viscosity, lub zog dua yog me dua, feem ntau 100,000s viscosity yog qhov tsim nyog.
Lub Sijhawm Post: Sep-16-2022