HydroxyPropyyl methylcellose (HPMC) yog qhov tseem ceeb ntxiv rau hauv kev tsim kho, tshwj xeeb hauv cov khoom noj ua ke. Nws zwm rau tsev neeg ntawm cellulose muaj kev hais ua neeg muaj kev pab thiab ntau yam los ua tus neeg sawv cev tuab tuab, dej khaws cia, thiab phau ntawv. Nyob rau hauv cov xis xis, HPMC pabcuam ntau lub luag haujlwm, txhim kho kev ua haujlwm, txhim kho cov khoom lag luam uas xav tau rau cov khoom kawg.
1. DiCemical qauv thiab cov khoom ntawm HPMC:
HPMC yog muab tau los ntawm cellulose, lub ntuj polymer muaj ntau yam nyob hauv cov phab ntsa ntawm tes. Los ntawm kev hloov kho tshuaj lom neeg, cov pab pawg hydroxyl tau hloov nrog methyl thiab hydroxyprropility thiab txhim kho kev ua haujlwm zoo li kev tsim kho. Tus degree ntawm kev hloov pauv (DS) thiab hnyav hnyav (MW) ntawm HPMC cuam tshuam nws cov yam ntxwv, xws li dej viscosity, thiab ua yeeb yaj kiab ua yeeb yaj kiab. Cov khoom no tuaj yeem ua kom haum kom haum kom haum rau cov ntawv thov uas yuav tsum tau ua, ua HPMC ib qho kev xaiv ntau yam hauv kev tsim qauv.
2.functions ntawm HPMC hauv cov khoom siv Maas-based:
Dej khaws cia: HPMC ua ib zaj duab xis nyias nyias ncig CIAS nkaus li cov dej tso rau hauv qhov sib xyaw. Qhov no cov txheej txheem hydronged ua kom muaj cov dej noo txaus kom muaj kev txhim kho kom zoo dua qub, txo cov shrinkage backing.
Kev Ua Haujlwm Txhim Kho: Cov Khoom Siv Hluav Taws Xob ntawm Kev Ntseeg Sib xyaw ua ke yog qhov tseem ceeb rau kev yooj yim ntawm kev tuav thiab chaw. HPMC ua raws li lub piscosity concifier, muab pseudoplastic cwj pwm mus rau muab tshuaj txhuam. Qhov kev ua haujlwm txhim kho ua haujlwm, pab txhawb kev ntws zoo dua, thiab homogeneity thaum txo segration thiab los ntshav.
Txhim kho adhesion: hauv collations thiab pob zeb ua cov qauv, HPMC txhim kho cov nplaum ntawm cov tshuaj ntsuab thiab cov yuam kev. Zaj duab xis-tsim cov khoom ntawm HPMC tsim daim ntawv sib khi ntawm cov txheej txheem ntawm cov txheej txheem thiab cov khoom sib xyaw ntxiv, ua rau muaj cov khoom siv tawv tawv ntawm cov khoom tawv tawv.
Nrib cov paj: shrinkage tawg yog ib qho teeb meem tshwm sim hauv cov ntaub ntawv caas-raws li cov ntaub ntawv, tshwj xeeb tshaj yog hauv cov ntawv thov kev ua tau zoo. Los ntawm kev tswj cov dej evaporation thiab tswj hwm hydration Kinetics, HPMC pab txo qis tawg, yog li kev txhim kho kev sib nraus tag nrho thiab ntev ntawm cov qauv.
Chaw Tswj Xyuas: HPMC influences lub rooj teeb tsa lub sij hawm ntawm kev txawj sib xyaw ua ke los ntawm kev thim rov qab lossis ua kom nrawm dua cov txheej txheem hydration. Cov cuab yeej no yog qhov tseem ceeb hauv kev tsim kho cov ntawv thov uas yuav tsum tau tswj hwm lub sijhawm teeb tsa, xws li huab cua kub concreting lossis thaum siv tshwj xeeb admixtures lossis thaum siv tshwj xeeb admixtures.
3. Cov npog ntawm HPMC hauv kev tsim kho:
Mortars: HPMC tau siv ntau yam siv nyob rau hauv cov kab vort ua qauv rau Masonry ua haujlwm, cov nplaum sib xyaw, thiab muab cov khoom nplaum. Nws lub peev xwm los txhim kho kev ua haujlwm, kev ua kom muaj zog, thiab dej rov qab ua rau nws tsis tseem ceeb hauv kev muab cov tshuaj khib nyiab ntxiv, kom ua tau zoo sib xws thiab ua tau zoo.
Qhob: Hauv pob zeb ua ntau lawm, HPMC tau ua haujlwm rau kev ua kom muaj ntshav, txo kom los ntshav, thiab txhim kho cov khoom tiav. Nws pom cov ntawv thov ua ke thiab kev ua tau zoo pob zeb ua kom sib xyaw, ua rau muaj kev ua tiav ntawm cov khoom siv tshuaj kho tshuab thiab kev ua kom zoo nkauj.
Kev Ntsuas Tus Kheej Kev Ua Si: HPMC ua si lub luag haujlwm tseem ceeb hauv kev siv lub ntsej muag ntawm tus kheej thiab kho. Nws rheatorian tswj cov khoom siv pab tau cov qauv ntawm tus kheej-qib sib tov uas ntws yooj yim thiab tswj cov khaub ncaws du thiab tiaj tus.
Sab nrauv rwb thaiv tsev thiab tag nrho cov tshuab (EIFS): HPMC-based txheej txheem yog feem ntau siv hauv EFS kom muab cov huab cua tiv thaiv, cov tshuaj nplaum, thiab yooj. Cov txheej txheej no tiv thaiv cov rwb thaiv tsev hauv qab thiab txhim kho kev pom zoo kom zoo nkauj ntawm cov tsev, ua rau lawv xaiv cov kev tsim qauv niaj hnub.
4.chavenges thiab cov kev xam pom yav tom ntej:
Thaum HPMC muaj cov txiaj ntsig ntau hauv cov ntaub ntawv tso cai, nws ua tau zoo tuaj yeem cuam tshuam los ntawm qhov kub thiab txias, thiab xis mas anegistry. Tsis tas li ntawd, cov kev ruaj khov thiab biodegradity ntawm cov qauv HPMC tau ua dhau los ua kev txiav txim siab ntau ntxiv hauv kev tsim kho kev tsim kho. Kev tshawb nrhiav yav tom ntej yog tsom rau kev tsim cov kev xaiv hauv eco-fromatives thiab ua kom cov kev sib tw HPMC los daws cov kev cov nyom no thaum tswj cov qauv kev ua tau zoo.
HydroxyPropyyl methylcellueculose (HPMC) yog ib qho ntxiv ntxiv rau cov khoom ua haujlwm ntawm cov ntawv tso cai. Nws cov kev ua haujlwm ntau ntau, suav nrog kev ua kom muaj dej, kev tswj hwm kev ua haujlwm, thiab kev tswj hwm, thiab sab nrauv txheej txheem. Raws li kev tsim kho kev tsim kho txuas ntxiv mus evolve, HPMC-raws li cov qauv tsim nyog yuav tsum ua lub luag haujlwm tseem ceeb hauv kev ua tiav, ruaj khov, thiab ua kom muaj kev ua kom muaj chaw nyob ruaj khov.
Lub Sijhawm Post: Feb-18-2025