HPMC (HydroxyPropyyl methylulose, hydroxypropylulose) yog cov khoom siv polymercellulose) yog cov ntaub ntawv polymercellulose) yog cov khoom siv polymer Nws lub luag haujlwm nyob rau hauv cov txheej txheej yog feem ntau xav txog hauv cov hauv qab no:
1. Thickeners thiab Rheology Modifiers
HPMC yog cov tuab tuab heev uas tuaj yeem nce cov viscosity ntawm cov khoom txheej, yog li txhim kho nws cov txheej txheej ua haujlwm. Hauv cov txheej txheej, hpmc hloov kho cov khoom siv ntawm txheej los ntawm kev sib sau cov qauv molecular los tiv thaiv cov txheej los ntawm sagging lossis txaws thaum tha xim lossis txau. Nws muaj viscosity dav ntau thiab yog haum rau kev tsim qauv sib txawv.
2. Zaj duab xis-ua tus neeg sawv cev
HPMC muaj cov yeeb yaj kiab zoo-tsim cov khoom thiab tuaj yeem tsim cov zaj duab xis uniform nyob rau saum npoo ntawm substrate. Cov zaj duab xis-tsim cov nplaum muaj cov nplaum zoo, hloov tau zoo thiab ruaj khov, uas tuaj yeem txhim kho txoj kev muaj peev xwm tiv thaiv cov chaw sab nraud. Cov cuab yeej no ua rau nws siv dav hauv cov cuab yeej txheej txheem kws kos duab thiab kev tiv thaiv tiv thaiv.
3. Dej khaws cia thiab kev tswj kom qhuav
Dej siab khaws cia ntawm HPMC yog qhov tseem ceeb ua kom zoo dua qub. Nws muaj peev xwm ncua kev evaporation ntawm cov txheej txheem kev thov txheej txheej txheej, yog li zam kev tawg lossis tsis zoo adhesion tshwm sim los ntawm ziab ua ntej ntawm txheej ua yeeb yaj kiab. Tsis tas li ntawd, cov cuab yeej no txhim kho kev thov kev ua tau zoo, tshwj xeeb hauv ib puag ncig kub lossis qhuav, muab cov sijhawm thov mus ntev dua.
4. Stabilizer
HPMC tuaj yeem siv los ua cov stortizer nyob rau hauv txheej txheej ua yeeb yam los tiv thaiv cov pigments thiab fillers los ntawm kev tswm los yog flocculating thaum cia lossis siv. Los ntawm kev txhim kho qhov ruaj ntseg ntawm cov txheej, koj tuaj yeem txuas nws lub txee ua kom zoo thiab ua kom muaj kev ua tau zoo ib zaug thaum ua ntawv thov.
5. Los tiv thaiv kev ua yeeb yam
Thaum tsim ntawm qhov chaw ntsug, xim yog nquag mus rau sagging vim lub ntiajteb txawj nqus. HPMC hloov kho lub zog ntawm cov txheej ntawm txheej kom nws ua kom viscosy thiab tshuaj tsuag), yog li ua tiav cov txiaj ntsig anti-sag zoo thiab txhim kho txheej txheem zoo. Cov.
6. Kev txhim kho ntawm kev tsim kho kev ua haujlwm
HPMC muab txheej txheej zoo ua tau zoo thiab Smoothness, txo cov cim txhuam lossis ua npuas, thiab ua rau txheej txheej sib txawv thiab hnav kom zoo dua. Ib qho ntxiv, nws tuaj yeem txhim kho lub thixotropy ntawm txheej, ua cov xim pleev xim lossis txau ua haujlwm ntau zog-txuag thiab muaj zog.
7. Ib puag ncig ua phooj ywg
HPMC yog dej-soluble polymer nrog zoo biocompatibility thiab ib puag ncig tiv thaiv cov khoom. Hauv cov tshuab dej-raws li cov tshuab txiav dej, HPMC tsis tuaj yeem hloov cov kuab tshuaj organic, kom txo tau cov khoom siv tawm tsam (VOC), tab sis kuj ua tau raws li kev tiv thaiv kev tiv thaiv ntsuab.
Cov Kev Siv Raug Raug
HPMC yog dav siv nyob rau hauv cov txheej txheem kos duab kos, txheej ntsa, waterproud txheej thiab muaj txheej txheej txheej txheem. Tshwj xeeb tshaj yog nyob rau hauv kev ua tau zoo putty, hpmc tau txhim kho kev ua tau zoo, Txhim kho cov khoom siv ua kom zoo dua qub thiab txhim kho cov hmoov txhuv duab kawg ua ke.
Lub luag haujlwm ntawm HPMC nyob rau hauv cov txheej txheem tsis yog tsuas yog txhim kho rheology, dej ua haujlwm thiab kev tsim kho ntawm cov txheej txheem zoo nkauj tsim thiab muaj kev ruaj khov zog. Raws li qhov ua tau zoo thiab ntau txoj kev ntxiv ntxiv, HPMC tau dhau los ua cov khoom tseem ceeb hauv cov qauv niaj hnub.
Lub sijhawm Post: Feb-15-2025