MHEC (Methyl Hydroxyethyl Cellulose) yog lwm yam polymer uas siv cellulose ua cov khoom ntxiv rau hauv cov cement. Nws muaj cov txiaj ntsig zoo ib yam li HPMC, tab sis muaj qee qhov sib txawv ntawm cov yam ntxwv. Cov hauv qab no yog cov kev siv ntawm MHEC hauv cov cementitious plasters:
Kev khaws dej: MHEC ua rau cov tshuaj pleev plaster khaws dej ntau ntxiv, yog li ua kom nws siv tau ntev dua. Nws pab tiv thaiv kom cov tshuaj pleev plaster tsis qhuav ua ntej lub sijhawm, ua rau muaj sijhawm txaus rau kev siv thiab ua kom tiav.
Kev Ua Haujlwm Tau Zoo: MHEC ua rau cov khoom siv plastering ua haujlwm tau zoo dua thiab nthuav dav tau zoo dua. Nws ua rau cov khoom sib dhos thiab ntws tau zoo dua, ua rau nws yooj yim dua rau kev siv thiab ua tiav qhov tiav ntawm cov chaw.
Kev nplaum: MHEC ua rau cov plaster nplaum zoo dua rau ntawm cov substrate. Nws pab ua kom muaj kev sib txuas zoo ntawm cov plaster thiab qhov chaw hauv qab, txo qhov kev pheej hmoo ntawm kev tawg lossis sib cais.
Kev Tiv Thaiv Kev Ntswg: MHEC muab thixotropy rau cov plaster sib tov, txhim kho nws txoj kev tiv thaiv kev qaug zog lossis kev poob qis thaum siv ntsug lossis saum taub hau. Nws pab tswj kom cov plaster tuab thiab cov duab zoo li xav tau thaum siv.
Tiv Thaiv Kev Tawg: Los ntawm kev ntxiv MHEC, cov khoom siv plastering tau txais kev ywj pheej ntau dua thiab yog li ua rau muaj kev tiv thaiv kev tawg zoo dua. Nws pab txo qhov tshwm sim ntawm kev tawg los ntawm kev qhuav shrinkage lossis thermal nthuav dav / contraction.
Kev Ruaj Khov: MHEC pab txhawb rau qhov kev siv plastering system kom ruaj khov. Thaum qhuav, nws ua ib daim yas tiv thaiv, ua rau nws tiv taus dej nkag, huab cua thiab lwm yam khoom ib puag ncig.
Kev Tswj Xyuas Rheology: MHEC ua haujlwm ua tus hloov kho rheology, cuam tshuam rau qhov ntws thiab kev ua haujlwm ntawm cov khoom sib tov. Nws pab tswj qhov viscosity, txhim kho cov yam ntxwv ntawm kev nqus lossis txau, thiab tiv thaiv kev sib sau lossis kev sib cais ntawm cov khoom khov.
Yuav tsum nco ntsoov tias qhov ntau thiab kev xaiv ntawm MHEC yuav txawv nyob ntawm qhov xav tau tshwj xeeb ntawm lub tshuab plastering, xws li qhov tuab uas xav tau, cov xwm txheej kho thiab lwm yam. Cov chaw tsim khoom feem ntau muab cov lus qhia thiab cov ntaub ntawv kev siv nrog cov qib pom zoo ntawm kev siv thiab cov lus qhia rau kev koom ua ke MHEC rau hauv cov cementitious gypsum formulations.
Lub sijhawm tshaj tawm: Lub Rau Hli-08-2023