HydroxyPropyyl methylcellose (HPMC) yog ib qho ntau yam siv tau siv dav dav siv raws li cov cement thesener hauv ntau yam lag luam. Nrog nws cov yam ntxwv tshwj xeeb thiab kev ua haujlwm, HPMC plays ua si lub luag haujlwm tseem ceeb hauv kev txhim kho cov kev ua tau zoo thiab kev ua tau zoo ntawm cov cement-raws cov khoom.
1.Cov noob ntawm HPMC:
Tus qauv tshuaj lom neeg: HPMC yog qhov tsis-ionic cellulose ither tau los ntawm cellulose, lub ntuj polymer. Nws yog synthesized los ntawm kev kho cellulose nrog cov tshuaj pleev cov epylene oxide thiab methyl chloride.
Hydrophilic Xwm: HPMC yog hydrophilic, lub ntsiab lus nws tau yooj yim nqus thiab khaws dej. Cov cuab yeej no yog qhov tseem ceeb rau nws lub luag haujlwm yog cov paj ntawv tuab li cov paj tsib, raws li nws pab hauv dej khaws cia tsis pub dhau cov xis nyob hauv cov xis.
Muaj peev xwm ua kom muaj peev xwm: HPMC cov khoom ua pov thawj zoo rau cov khoom siv tsawg thaum tawg hauv dej. Nws ua cov tshuaj nres uas zoo tuab tuab tuab tuab cov ceg ntoo zoo li, neeg nplua nuj, thiab lwm yam kev tsim kho.
Zaj duab xis tsim: Thaum ziab, HPMC cov foos ua ib pob tshab, hloov tau, thiab cohesive zaj duab xis. Zaj yeeb yaj kiab no ua raws li kev thaiv, txhim kho cov nplaum, dej tsis kam, thiab cov khoom siv ruaj khov ntawm cov khoom xyaw.
PE Stability: HPMC yog qhov ruaj khov tshaj li qhov dav ntev, ua rau nws sib haum nrog ntau txoj cai xis tsim thiab cov kev cog lus.
2. Txhij cov lus HPMC hauv cov khoom noj khoom haus caent-basent:
Pobzeb Cov Ntawv Qhia: HPMC feem ntau siv raws li cov tuab tuab hauv cov nplais nplaum kom txhim kho kev ua haujlwm, adchesion, thiab sag tsis kam. Nws txhim kho txoj hlua khi rau lub zog ntawm cov vuas thiab substrates, ua kom tiav kev sib sau ntev.
Mortars: Hauv Caas Enfars, HPMC ua haujlwm ua kev kho siab rheology, tswj viscirecosity thiab tiv thaiv kev cais. Nws txhawb nqa cov kev faib tawm ntawm cov neeg sib sau ua ke, kom muaj kev tsis muaj zog, thiab txo cov shrinkage tawg.
Kev Ntsuas Tus Kheej Theem: HPMC imparts tus kheej-leveling cov yam ntxwv rau kev nplij siab tus kheej-leveling, muab txoj kev du thiab txawm nto. Nws txhim kho Flowability, minimizes nto tsis xws luag, thiab txhim kho qhov ua tiav tag nrho.
Grouts: HPMC yog siv hauv cov grout tsim los kho viscosity thiab tiv thaiv kev ntxuav cov khoom siv. Nws ua kom pom tseeb ua tiav qhov khoob, txhim kho cohesion, thiab minimizes shrinkage thaum kho.
Rwb thaiv sab nrauv thiab cov tshuab ua tiav tiav (EIFS): HPMC-based postings yog thov rau txhim kho huab cua tiv thaiv, catch muaj peev xwm hloov pauv tau, thiab kev hais plaub hau. Cov txheej txheej no muab cov txheej tiv thaiv kev tiv thaiv hla kev rwb thaiv tsev cov laug cam, kev txhim kho hluav taws xob thiab kev siv zog.
3.Benefits ntawm kev siv HPMC ua cov cement thaas thesenter:
Txhim kho qhov ua haujlwm: HPMC imparts zoo heev ntws thiab ci ci c tov sib xyaw, txhim kho kev ua haujlwm thiab yooj yim ntawm daim ntawv thov.
Txhim kho Adhesion: kev ua yeeb yaj kiab ua yeeb yaj kiab ntawm HPMC txhim kho txoj hlua khi ntawm kev sib khi ntawm cov khoom noj kom huv thiab cov kev tsim tawm ruaj khov thiab ntev ntev.
Dej khaws cia: HPMC tseem ceeb txhim kho cov dej khaws tseg hauv kev ua kom cov dej xis thiab ua kom muaj kev haus dej kom zoo ntawm cov Maas hais.
Txo cov chaw pov tseg: los ntawm kev tswj cov dej evaporation thiab txhim kho cohesion thiab txhim kho cohesion, HPMC pab txo cov khoom noj kom zoo nkauj, txhim kho lawv cov qauv kev ntseeg.
Versilility: HPMC tuaj yeem yooj yim incorporated rau ntau cov khoom noj kom yooj yim, muab cov khoom siv tau yooj yim, ua tiav cov yam ntxwv uas xav tau.
4. Siv HPMC:
Kev ntsuas tshuaj: Qhov kev ua tau zoo ntawm HPMC nyob ntawm cov yam xws li cov hom nyem, xav tau yam ua kom sib thooj, thiab cov ntawv thov yuav tsum muaj. Nws yog qhov tseem ceeb uas yuav tsum tau kev sim siab los txiav txim siab txog qhov tsim nyog muab rau cov qauv tshwj xeeb.
Nws cov txheej txheem sib xyaw: kom zoo dispersion ntawm HPMC yog qhov tseem ceeb kom ua tiav qhov xav tau cov teebmeem thickening. Nws yuav tsum tau ntxiv maj mus rau cov dej sib xyaw thaum ua kom tawv tsis tu ncua los tiv thaiv cov pob tsim.
Kev sib txuam: HPMC yuav cuam tshuam nrog lwm cov kev sib ntxiv ntxiv rau hauv cov cai hloov. Kev ntsuas kev sib haum yuav tsum tau ua kom ntseeg tau tias qhov kev ruaj ntseg thiab kev ua tau zoo ntawm cov khoom kawg.
Cov kev mob ib puag ncig: Chaw sov thiab cov av noo tuaj yeem cuam tshuam kev ua haujlwm ntawm HPMC-raws li cov xis mas tov. Yuav tsum muaj kev txiav txim siab tshwj xeeb thaum lub caij kub lossis huab cua qhuav los tiv thaiv kom qhuav ntxov thiab tawg.
Cia: HPMC yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav qhov chaw kom deb ntawm kev tshav ntuj ncaj qha thiab noo noo. Cov khoom kom tsim nyog cia yuav pab tswj nws lub neej zoo thiab ntev ntev.
HPMC yog qhov tseem ceeb ntxiv rau cov khoom lag luam xas raws li kev txhim kho cov haujlwm ua haujlwm, kev ua haujlwm, dej khaws cia, thiab kav dej. Los ntawm kev nkag siab txog nws cov yam ntxwv, kev siv cov ntawv thov, thiab cov kev txiav txim siab, cov kws tsim khoom tuaj yeem tsim kho cov kev ua tau zoo thiab qhov zoo ntawm lawv cov qauv hloov kho.
Lub Sijhawm Post: Feb-18-2025