HPMC (HydroxyPropY methylcellulose) yog ib qho tseem ceeb semi-hluav taws xob polymer cov khoom siv nyob rau hauv cov txheej txheej. Nws yog dej- thiab organic cellulose derivitive uas ua ntau lub luag haujlwm tseem ceeb rau nws lub cev thiab tshuaj chemical.
1. Zaj duab xis-tsim cov khoom
Ib qho ntawm cov haujlwm tseem ceeb ntawm HPMC yog ua zaj duab xis-ua tus neeg sawv cev. Tom qab nws yog yaj hauv dej los yog cov kuab tshuaj organic, nws tuaj yeem tsim cov kev daws teeb meem, thiab tom qab kev daws teeb meem evaporates, nws tsim cov yeeb yaj kiab ntom ntom thiab hnav tsis zoo. Zaj duab xis no muaj cov kev siv tshuab zoo thiab yoog raws thaum muab kev tiv thaiv rau substrate. Piv txwv li, hauv cov txheej txheem tshuaj, HPMC muab cov haujlwm xws li ya raws txoj kev tsis kam thiab lub teeb colation, uas tau ua kom ruaj khov ntawm cov yeeb tshuaj.
2. Adhaesion
Lub visccosity siab ntawm HPMC ua rau nws ua raws li phau ntawv, pab txheej txheej, pab txheej cov khoom ua raws li cov chaw seem. Tom qab kho, nws tuaj yeem txhim kho txoj kev sib raug zoo ntawm cov txheej thiab cov txheej txheem, muaj txiaj ntsig zoo tiv thaiv cov tev lossis tawg.
3. Thickening thiab ruaj khov cuam tshuam
HPMC muaj kev muaj peev xwm zoo rau lub peev xwm thiab tuaj yeem ua rau muaj viscosity ntawm txheej txheej ntawm cov khoom siv qis. Cov xeeb ceem no tuaj yeem hloov kho cov rheology ntawm cov khoom txheej, muab nws zoo thixotropy thiab kev ua haujlwm thaum lub sijhawm kev tsim kho. Ib qho ntxiv, cov nyhuv tuab ntawm HPMC tiv thaiv qhov teeb tsa ntawm cov pigments lossis fillers nyob rau hauv cov txheej txheej, kom muaj kev sib txawv ntawm cov qauv.
4. Waterproof thiab moisturizing
Cov pab pawg hydrophobic (methyl thiab hydroxypropyl) ntawm Hydroxypropyl) ntawm Hydropropyl) ntawm Hydmc muab nws qee cov dej tsis kam ua rau cov dej tsis kam ua. Nyob rau tib lub sijhawm, HPMC tuaj yeem tswj cov pa evapively ntawm dej, yog li txuas lub tshuab ziab khaub ncaws thiab txhim kho kev tsim kho kom yooj yim. Ib qho ntxiv, hauv qee qhov xwm txheej tshwj xeeb (xws li kev siv hluav taws xob), cov mawv muaj txiaj ntsig ntawm HPMC tuaj yeem pab zam kom tsis txhob muaj dej ntau dhau, yog li kev txhim kho lub zog ntawm lub zog ntawm cov khoom.
5. Ncua thiab tshem tawm cov nyhuv
Hauv cov txheej txheem dej-ua cov txheej txheem dej, HPMC ua raws li cov neeg raug ncua los ntawm kev ua kua viscosity (xws li pigments lossis fitters) los ntawm kev nqus tau vim lub ntiajteb txawj nqus. Nws cov khoom lag luam zoo ua rau cov xim thiab kev ntxhib los mos ntawm txheej ntau yam zoo nkauj, txhim kho qhov kev ua kom tiav thiab ua haujlwm tag nrho.
6. Kho lub sijhawm kom qhuav
Cov noo noo tswj cov khoom ntawm HPMC pab kom nws cuam tshuam nrog lub sijhawm ziab ntawm lub tsho. Los ntawm kev txo cov dej ntawm cov dej evaporation, nws pab tswj cov teeb meem saum npoo av tawv thiab tag nrho kev kho cov teeb meem, tsis txhob tawg teeb meem nrawm nrawm.
7. Huab cua Kuj thiab kev tiv thaiv
Cov zaj yeeb yaj kiab txheej tsim los ntawm HPMC muaj qee cov UV tiv taus thiab tshuaj lom neeg kuj, uas tuaj yeem tiv thaiv cov tshuaj tiv thaiv los ntawm cov khoom muaj teeb meem hauv ib puag ncig. Piv txwv li, hauv kev tiv thaiv kev tiv thaiv rau cov ntoo lossis hlau, HPMC tuaj yeem txhim kho lub durability ntawm txheej thiab txuas ntxiv nws txoj kev pabcuam lub neej.
8. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
Raws li cov tsis muaj tshuaj lom thiab ib puag ncig cov khoom siv nyob rau hauv ib puag ncig, HPMC ua tau raws li cov khoom lag luam ntsuab niaj hnub. Nyob rau hauv ntau cov dej txheej txheem dej, nws tuaj yeem hloov cov kuab tshuaj organic, txo cov emissions ntawm cov chaw tsim hluav taws xob (voc), thiab txhim kho kev tsim kho thaj chaw.
HPMC ua si sib txawv thiab qhov tseem ceeb ntawm cov txheej txheem. Nws cov yeeb yaj kiab ua yeeb yaj kiab, thickening, adhesion, pleev xim thiab moisturizing zog ua rau nws muaj cov khoom xyaw tsis tau. Los ntawm kev ua kom zoo dua nws txoj kev ua haujlwm hnyav, qib degree hloov chaw, xws li cov tshuaj pleev ib ce, cov ntaub ntawv tsim thiab muaj cov txheej txheem. Yog li ntawd, HPMC yog ib qho kev pab cuam tseem ceeb rau kev txhim kho tshuab txheej txheem niaj hnub no.
Lub sijhawm Post: Feb-15-2025