HydroxyPropyyl methylulose (HPMC) yog cov cellulle-soluble cellulative dav siv hauv kev tshuaj khib, tshwj xeeb tshaj yog qhov twg nws lub luag haujlwm yog qhov tshwj xeeb tshaj yog. Raws li cov tuab tuab tuab thiab cov neeg sawv cev ntawm tus kheej, HPMC tuaj yeem txhim kho kev ua haujlwm, li lwm yam ntawm cov khoom huv thiab kev tsim kho ntawm cov tshuaj khib.
(1) Cov yam ntxwv yooj yim ntawm HPMC
HPMC yog lub cellulose compound tau txais los ntawm kev hloov kho, mas muaj ntawm cellulose tom qab hydroxyprorepation thiab methylation. HPMC muaj cov dej ua haujlwm zoo heev, thermal stability thiab tshuaj stabability. Nws tuaj yeem tsim cov kev daws teeb meem siab hauv dej, uas ua lub luag haujlwm ntawm thickening, moisturizing thiab kev txhim kho fluidity. Tsis tas li ntawd, HPMC kuj muaj qhov cuam tshuam zoo ntawm cov nplaum, dej tuav thiab fluidity ntawm cug.
(2) cov nyhuv ntawm HPMC ntawm kev ua haujlwm ntawm cug
1. Txhim Kho Lub Kua Muag
Lub fluidity ntawm cug yog ib qho ntsuas tseem ceeb rau kev ntsuas nws cov haujlwm. Tshuaj khib nrog lub cev tsis zoo yuav ua rau muaj teeb meem nyuaj, tshwj xeeb tshaj yog nyob rau hauv cov chaw uas yuav tsum tau siv cov kev cai loj lossis tsim nyog yuav tsum tau ua. HPMC nce viscosity ntawm cug, ua rau nws ua kom dej ntau dua thaum siv thiab ua kom tuab thiab tswj tuab thaum lub sijhawm kev tsim kho. Tshwj xeeb tshaj yog nyob rau hauv tuab cug kev tsim kho, HPMC muaj peev xwm txo cov kab ntsug ntawm cov khoom siv tshuaj khib, yog li ua kom pom kev sib tov lossis xaub ntxov ntxov, zam kev tsis ncaj ncees.
2. Txhim Kho Cov Dej Ua Haujlwm
Dej ceev ceev ntawm cug yog qhov tseem ceeb rau kev ua haujlwm thaum lub sijhawm kev tsim kho, tshwj xeeb tshaj yog nyob rau hauv kev sib xyaw, ntawv thov thiab tawv tawv. Yog tias cov dej hauv lub tshuaj khib nyiab evaporates dhau nrawm, nws yuav ua teeb meem xws li qhov chaw tawg thiab cov khoom tsis zoo. Raws li cov dej ua haujlwm tau txais txiaj ntsig zoo, HPMC tuaj yeem txhim kho cov dej khib nyiab, ua kom cov pa hluav taws xob ua kom huv lub zog, thiab txhim kho lub zog uas muaj zog ntawm lub cev.
3. Txhim Kho Adhesion
Cov nplaum ntawm cap ncaj qha cuam tshuam cov nyhuv kev tsim kho, tshwj xeeb tshaj yog cov khoom lag luam zoo xws li cov vuas thiab pob zeb. HPMC txhim kho cov qauv thiab rheological yam ntxwv ntawm cug, cia cug ua kom zoo dua rau cov txheej txheem zoo dua rau lub zog ntawm cult hlau thiab cov nplaim dej. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv kev tsim kho ntawm phab ntsa, pem teb, sab nrauv phab ntsa tsho tiv no, thiab tuaj yeem zam qhov tshwm sim ntawm kev poob vim kev tsim txom.
4. Txhim kho kev tawm tsam poob thiab tawg tsis kam
HPMC hauv tshuaj khib yuav tuaj yeem txhim kho kev tiv thaiv kev tawm tsam thiab tawg pleb ntawm kev tshuaj khib, tshwj xeeb tshaj yog nyob rau ib puag ncig muaj kev kub ntxhov. HPMC tsis tuaj yeem txhim kho thawj zaug kev tshuaj khib, tab sis kuj tsim cov qauv kev coj noj tshuaj ntawm cov kab nrib pleb ntawm dej nrawm lossis kub hloov.
(3) Daim ntawv thov ntawm HPMC nyob rau ntau hom tshuaj khib
1. Kev sib khib
Hauv kev sib khib cug, txoj haujlwm tseem ceeb ntawm HPMC yog txhawm rau txhim kho kev tshuaj khib nyiab, cov vuas tsis yooj yim rau cov neeg ua haujlwm thov thiab kho qhov chaw ntawm cov cib.
2. Nrawm Kho Cug
Rau nrib nrib kho cug, hpmc tuaj yeem ua kom cov dej sib khi thiab muaj fellity ntawm cov kab tsuag, yog li ua kom tau yooj yim dua thiab tswj adhesion. Cov khoom siv thickening ntawm HPMC tuaj yeem tiv thaiv cov tshuaj khib los ntawm ntws nrawm dhau thaum kev tsim kho, ua kom muaj kev ruaj khov ntawm cov nyhuv kho.
3. Pasting cug
Nyob rau hauv cov ntaub ntawv pasting xws li vuas thiab pob zeb, HPMC tuaj yeem txhim kho thawj lub zog thaum pib lub zog thiab kev ua haujlwm ntawm lub tshuaj khib. Txij li thaum lub zog ua haujlwm ntawm lub tshuaj khib yuav tsum tau tu kom ntev ntev thaum lub sijhawm tsim kho kom qhuav thiab txo cov teeb meem ntawm lub sij hawm nruab nrab nres.
4. Sab nrauv Phab Ntsa Cov Tshuaj Khov
Sab nrauv phab ntsa xim tshuaj yuav tsum tau ua kom muaj kev hloov pauv ntawm sab nrauv, thiab cov dej ntws tawm ntawm cov nplaum sab nrauv
(4) Kev tiv thaiv nyob rau hauv daim ntawv thov HPMC
Txawm hais tias daim ntawv thov nyhuv ntawm HPMC hauv tshuaj khib nyiab yog qhov tseem ceeb, nws siv kuj yuav tsum muaj qee yam kev xav tau. Piv txwv li, tus nqi HPMC ntxiv yuav tsum tau hloov kho raws li cov kev xav tau tiag tiag ntawm lub cug. Kev siv ntau dhau yuav ua rau lub tshuaj khib viscosity kom dhau siab dhau, cuam tshuam kev ua haujlwm kev tsim kho. Kev siv tsis txaus yuav ua rau nws cov nyhuv ntawm kev txhim kho cov tshuaj cug kev ua haujlwm tsis pom tseeb. Tsis tas li ntawd, HPMC tau qeeb qeeb. Nws raug nquahu kom sib tov nws nrog dej ua ntej siv kom tsis txhob muaj cov tsos ntawm cov tshuaj granular uas cuam tshuam rau qhov zoo ntawm cug tshuaj.
Daim ntawv thov ntawm kev tshuaj khib hauv tshuaj khib nyiab tau txhim kho kev tsim kho ntawm lub tshuaj khib, thiab ua kom cov tshuaj khib kom tswj tau zoo hauv kev ua haujlwm ntau yam. Nrog rau kev txhim kho txuas ntxiv ntawm kev tsim kho cov kev tsim kho thiab zoo, raws li muaj txiaj ntsig thiab ib puag ncig zoo ntxiv, yuav muaj ib qho kev thov kho dav.
Lub Sijhawm Post: Feb-19-2025