Pobzeb nplaum yog cov nplaum siv los muab cov vuas, thiab nws qhov kev ua tau zoo cuam tshuam rau kev tsim kho thiab kev pabcuam lub neej ntawm cov vuas. Lub sijhawm qhib yog qhov tseem ceeb ntawm kev ua tau zoo ntawm cov nplais nplaum, uas yog hais txog lub sijhawm ntawm lub sijhawm uas cov nplais nplaum tuaj yeem tswj tau nws cov kev sib raug zoo tom qab tau thov rau lub hauv paus txheej ua ntej ziab. Hydroxypropyl Methylcellulose (HPMC), uas yog siv cov thickener thiab dej retainer, ua lub luag haujlwm tseem ceeb hauv kev tswj lub sijhawm qhib ntawm pobzeb nplaum.
Cov yam ntxwv tseem ceeb ntawm HPMC
HPMC yog non-ionic cellulose ether nrog zoo thickening, dej tuav, zaj duab xis-forming thiab lubricating zog. Nws cov qauv molecular muaj hydroxypropyl thiab methyl substituents, uas ua rau nws yaj nyob rau hauv dej los tsim ib tug viscoelastic tov, yog li ua rau lub viscosity thiab stability ntawm lub system. Hauv cov nplais nplaum, HPMC tuaj yeem tsis tsuas yog txhim kho kev tsim kho, tab sis kuj txuas ntxiv lub sijhawm qhib los ntawm kev kho cov dej evaporation.
Mechanism ntawm kev cuam tshuam ntawm HPMC ntawm lub sijhawm qhib ntawm pobzeb nplaum
Kev tuav dej: HPMC muaj cov dej tuav tau zoo thiab tuaj yeem tswj tau cov dej evaporation zoo. Ntxiv HPMC rau cov qauv ntawm cov pobzeb nplaum tuaj yeem tsim ib zaj duab xis nyias tom qab thov, ua kom cov dej ntws qeeb qeeb thiab ua rau lub sijhawm qhib. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau kev tsim kho hauv qhov chaw qhuav, vim tias cov dej nrawm nrawm yuav ua rau cov nplais nplaum plam nws cov khoom sib txuas ua ntej ntxov.
Thickening nyhuv: HPMC tuaj yeem ua kom cov viscosity ntawm cov nplais nplaum, ua kom nws zoo dua hauv kev tsim kho thiab txheej txheej. Cov viscosity siab dua tuaj yeem ua kom ntseeg tau tias cov pobzeb nplaum tuaj yeem sib npaug ntawm cov txheej txheem tom qab daim ntawv thov, tsim cov nplaum nplaum ruaj khov, thiab txo qhov teeb meem ntawm lub sijhawm qhib luv vim tias nyias nyias txheej nplaum.
Cov cuab yeej ua yeeb yaj kiab: Tom qab HPMC yaj hauv dej, nws tuaj yeem tsim cov yeeb yaj kiab uas muaj zog. Cov yeeb yaj kiab no tuaj yeem tsis tsuas yog khaws cov dej, tab sis kuj tsim cov txheej txheem tiv thaiv ntawm cov nplais nplaum nplaum kom tiv thaiv cov huab cua sab nraud thiab hnub ci los ntawm kev ncaj qha rau ntawm cov nplaum txheej thiab ua kom cov dej ntws tawm. Qhov zoo dua cov cuab yeej ua yeeb yaj kiab, lub sijhawm qhib ntev dua.
Cov yam ntxwv cuam tshuam rau cov nyhuv ntawm HPMC
Tus nqi ntawm HPMC ntxiv: Tus nqi ntawm HPMC ntxiv yog ib qho tseem ceeb cuam tshuam rau lub sijhawm qhib ntawm pobzeb nplaum. Feem ntau hais lus, tus nqi tsim nyog ntawm HPMC tuaj yeem ua rau lub sijhawm qhib, tab sis ntau dhau lawm yuav ua rau cov viscosity ntawm cov nplais nplaum siab dhau, cuam tshuam rau kev tsim kho vaj tse. Yog li ntawd, thaum tsim cov qauv, nws yog ib qho tsim nyog yuav tsum ua kom zoo dua nws raws li cov kev xav tau tshwj xeeb thiab ib puag ncig kev tsim kho.
HPMC qib viscosity: HPMC ntawm cov qib viscosity sib txawv kuj ua tau txawv ntawm cov nplais nplaum. High-viscosity HPMC tuaj yeem muab cov dej tuav ruaj khov thiab ua kom tuab, tab sis nws tseem yuav ua rau kom cov rheology ntawm cov colloid, uas tej zaum yuav tsis zoo rau kev tsim kho. Tsawg-viscosity HPMC yog qhov sib txawv. Yog li, nws yog ib qho tsim nyog los xaiv cov qib HPMC viscosity uas tsim nyog raws li daim ntawv thov tshwj xeeb ntawm cov nplais nplaum.
Kev tsim kho ib puag ncig: Cov yam ntxwv xws li ambient kub thiab av noo kuj tseem cuam tshuam rau kev ua haujlwm ntawm HPMC hauv pobzeb nplaum. Nyob rau hauv qhov kub thiab txias ib puag ncig, cov dej evaporates sai, thiab lub sij hawm qhib yuav luv luv txawm tias HPMC ntxiv. Ntawm qhov tsis sib xws, nyob rau hauv ib puag ncig nrog cov av noo siab, cov dej tuav ntawm HPMC yog qhov tseem ceeb dua, thiab lub sijhawm qhib tau ntev dua.
Kev sim kawm
Cov nyhuv ntawm HPMC ntawm lub sijhawm qhib ntawm cov nplais nplaum tuaj yeem txheeb xyuas los ntawm kev sim. Cov kauj ruam sim hauv qab no feem ntau tuaj yeem tsim:
Kev npaj ua qauv: Npaj cov nplais nplaum nplaum nrog cov HPMC sib txawv cov nyiaj ntxiv thiab qib viscosity.
Qhib lub sij hawm sim: Raws li tus qauv ib puag ncig, siv cov nplais nplaum rau ntawm txheej txheej txheem, txuas cov vuas ntawm ib ntus, sau cov kev hloov pauv hauv kev sib koom ua ke, thiab txiav txim siab lub sijhawm qhib.
Kev txheeb xyuas cov ntaub ntawv: Sib piv cov ntaub ntawv qhib lub sijhawm nyob rau hauv cov xwm txheej sib txawv thiab txheeb xyuas cov txiaj ntsig ntawm HPMC ntxiv thiab qib viscosity ntawm lub sijhawm qhib.
Raws li ib qho tseem ceeb ntxiv, HPMC tuaj yeem txuas ntxiv lub sijhawm qhib ntawm pobzeb nplaum los ntawm nws cov dej tuav, thickening thiab zaj duab xis-tsim cov khoom. Hauv kev siv cov tswv yim, kev xaiv tsim nyog thiab ntxiv ntawm HPMC tuaj yeem txhim kho kev tsim kho kev ua tau zoo thiab kev sib txuas ntawm cov nplais nplaum. Txawm li cas los xij, cov txiaj ntsig ntawm HPMC kuj tseem cuam tshuam los ntawm ntau yam, uas yuav tsum tau ua kom pom tseeb hauv cov qauv tsim thiab cov txheej txheem tsim kho kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Post lub sij hawm: Lub Xya hli ntuj-26-2024