1. Solubility thiab viscosity ntawm HPMC
Raws li cov dej-soluble cellulose cellulose derivative, HPMC tau siv dav hauv cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog nyob rau qhov uas ua kom muaj cov dej, thiab ua haujlwm txhim kho, thiab txhim kho kev tsim kho. Thaum lub sij hawm lub sij hawm stirringing ntawm putty hmoov, lub dlring ceev thiab duration yuav cuam tshuam rau solubility thiab kawg viscosity ntawm HPMC. Yog tias lub sijhawm stirring yog qhov sib zog dhau los yog lub sijhawm stirring ntev heev, lub solubility ntawm HPMC tuaj yeem txo qis, yog li cuam tshuam rau nws cov nyhuv ua kom huv. Hauv qhov no, kev tsim kho cov hmoov putty yuav cuam tshuam, xws li kev tawg, hmoov tsis thiab lwm yam teeb meem.
Ntawm qhov tod tes, qhov zoo ntawm cov neeg rau txim yuav tseem cuam tshuam rau HPMC. Yog tias cov dej ua tau zoo ntawm cov diluent tsis zoo, muaj ntau cov ntsiab lus ntawm HPMC lossis muaj qhov ua tsis tiav cov txiaj ntsig zoo, nws yuav cuam tshuam nrog cov khoom siv tsis tiav, nws yuav cuam tshuam rau cov khoom siv tsis tiav, nws yuav cuam tshuam rau cov khoom siv ua tsis tau zoo.
2. Kev sib txuam ntawm nplawm
Qhov kev sib txuam ntawm cov txheej txheem stirring yog qhov tseem ceeb rau qhov kawg ntawm kev ua hmoov putty. Yog tias lub plhaw tsis txaus, hpmc thiab lwm yam khoom xyaw (xws li cov hmoov av uas muaj zog, thiab tsis tshua muaj txiaj ntsig, yog li cuam tshuam tag nrho cov viscosity thiab siv cov nyhuv. Piv txwv li, HAIV HPMC cov ntsiab lus nyob rau hauv ib cheeb tsam hauv zos tuaj yeem ua rau cov hmoov uas muaj sia nplaum kom ua kom khov, cuam tshuam rau kev sib kis tau; Thaum muaj cov ntsiab lus HPM tsawg kuj yuav ua rau cov hmoov puty kom muaj cov khoom tsis zoo thiab ua kom poob yooj yim thaum lub sijhawm kev tsim kho.
3. Tus cawv ntawm cov dej zom zaws
Dilution dej yog qhov tseem ceeb tshaj plaws hauv cov txheej txheem ntau lawm ntawm cov hmoov putty. Lub hardness, Ph, Ph, cov ntsev tsis zoo, thiab lwm yam ntawm cov dej yuav cuam tshuam rau cov solubility thiab ua haujlwm ntawm HPMC. Piv txwv li, calcium thiab cov dej khov nab kuab yuav hnov mob nrog HPMC los tsim cov solubilation, thiab yog li cuam tshuam rau cov hmoov kawg ntawm cov hmoov txhuas. Yog tias siv cov dej ntshiab lossis cov dej ntshiab yog siv, HPMC tuaj yeem ua lub luag haujlwm zoo, yog li kev tsim kho thiab cov nplaum ntawm Putty.
4. Kev sib faib ntawm HPMC
Qhov kev sib ntxiv ntawm HPMC cuam tshuam ncaj qha cuam tshuam qhov kawg ntawm kev ua hmoov putty. Thaum lub sijhawm ua haujlwm sib xyaw thiab cov tshuaj ua haujlwm ntawm HPMC tsis tsim nyog, txawm tias nws yog qhov ntau dhau, nws yuav cuam tshuam rau kev ua tau zoo ntawm cov hmoov putty. Piv txwv li, yog HPMC ntxiv rau ntau dhau, lub viscosity ntawm cov hmoov putty yuav dhau lawm, uas yuav ua rau daim ntawv thov tsis sib xws; Thaum yog HPMC tau ntxiv tsawg dua, nws yuav ua rau tsis txaus nyias ntawm cov hmoov uas muaj sia thiab poob thaum lub sijhawm tsim.
5. Cov nyhuv ntawm kub
Hloov pauv thaum sib xyaw thaum sib tov thiab kev noj haus kuj tseem yuav cuam tshuam rau qhov zoo thiab ua haujlwm HPMC. Nyob rau hauv cov kev mob siab, HPMC feem ntau yog ntau soluble, tab sis thaum qhov kub siab dhau lawm, nws kuj yuav ua kom nrawm dua ntawm HPMC, yog li txo nws qhov kev ua tau zoo. Conversely, lub solubility ntawm HPMC yuav txo qis raws li cov xwm txheej kub tsawg, cuam tshuam nws cov nyhuv tuab. Yog li ntawd, thaum lub sij hawm sib xyaw thiab cov dilution, nws yog qhov tsim nyog los xyuas kom meej tias HPMC tuaj yeem ua tiav thiab ua tiav ntawm nws qhov zoo tshaj plaws.
6. Cov nyhuv ntawm cov neeg kho tshuab nplawm ntawm HPMC
Cov txheej txheem thiab kev nrawm ntawm cov tshuab stirring kuj yog ib qho uas xav tau kev saib xyuas. Yog tias lub nrawm nrawm nrawm nrawm nrawm, tshwj xeeb tshaj yog ua rau cov qauv molccular ntawm HPMC kom raug rhuav tshem, txo nws cov dej ua kom zoo. Tsis tas li ntawd, kev nplawm nruj heev yuav ua rau cov dej kom yaj sai, ua rau tsis tiav ntawm HPMC thiab cuam tshuam rau kev siv cov nyhuv kawg ntawm cov hmoov txhuas.
Lub stirring thiab dilution cov txheej txheem ntawm putty hmoov tsis muaj qhov zoo thiab ua tau zoo ntawm HPMC. Txhawm rau kom muaj cov hmoov zoo ntawm cov hmoov txhuas, nws yog ib qho tsim nyog los tswj cov kev sib txuam thiab kub ntawm cov dej, thiab ntxiv hpmc nruj me ntsis raws li kev faib ua feem. Nyob rau tib lub sijhawm, tsis txhob ua dhau kev ua kom nrawm nrawm nrawm thiab tsis tsim nyog ua si HPMC tuaj yeem ua tiav nws lub luag haujlwm ntawm thickening, dej tuav thiab txhim kho kev tsim kho.
Lub Sijhawm Post: Feb-19-2025