Methyl hydroxyethyl cellulose (MHEC)yog ib qho non-ionic cellulose ether derivative uas muaj cov thickening zoo heev, khaws dej, ua zaj duab xis thiab ua haujlwm tau zoo. Nws ua lub luag haujlwm tseem ceeb heev hauv cov txheej txheem mortar sib xyaw ua vaj tse niaj hnub. Nws yog siv dav hauv ntau yam khoom xws li masonry mortar, plaster mortar, tile adhesive, cement self-leveling thiab thermal insulation mortar, uas tuaj yeem txhim kho kev ua haujlwm ntawm mortar thiab txhim kho kev tsim kho zoo thiab kev ua haujlwm zoo.
1. Txhim kho qhov kev khaws cia dej ntawm cov mortar
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm MHEC yog nws qhov kev ua tau zoo heev ntawm kev khaws dej. Thaum lub sijhawm tsim cov mortar, cov khoom siv cementitious xws li cement lossis gypsum xav tau kev txhawb nqa dej txaus hauv qhov kev sib xyaw ua kom tawv, thaum cov txheej hauv paus feem ntau muaj kev nqus dej zoo, uas yuav nqus cov dej hauv cov mortar sai sai, ua rau cov dej poob thaum ntxov hauv cov mortar thiab cuam tshuam rau kev nce qib tag nrho ntawm cov tshuaj tiv thaiv hydration. MHEC tsim cov qauv mesh peb-seem sib npaug hauv cov mortar, kaw cov dej noo, tiv thaiv cov dej noo los ntawm cov txheej hauv paus lossis huab cua, thiab yog li tswj kev ua haujlwm ntawm cov mortar rau lub sijhawm ntev. Qhov kev tuav dej no yog qhov tseem ceeb rau kev ncua sijhawm tsim kho, txhim kho kev txhim kho lub zog thiab tiv thaiv kev tawg.
2. Txhim kho kev ua haujlwm ntawm kev tsim kho thiab kev ua haujlwm zoo
MHEC, ua ib yam khoom ua kom tuab zoo, tuaj yeem txhim kho qhov sib xws thiab cov yam ntxwv thixotropic ntawm cov mortar, ua rau cov mortar muaj kev ua tau zoo hauv kev tsim kho. Thaum lub sijhawm tsim kho xws li plastering thiab paving, cov mortar uas muaj MHEC muaj qhov chaw du, yooj yim nthuav, tsis lo rau riam, thiab muaj cov yam ntxwv zoo tiv thaiv kev sagging. Tshwj xeeb tshaj yog thaum tsim kho ntawm cov chaw ntsug, cov mortar tsis yooj yim swb mus rau hauv qab, uas yooj yim rau kev tswj qhov tuab ntawm cov txheej thiab txhim kho kev ua haujlwm ntawm kev tsim kho. Tsis tas li ntawd, cov yam ntxwv lubricating ntawm MHEC txhim kho kev ua haujlwm ntawm cov mortar, txo cov neeg ua haujlwm tsim kho lub cev, thiab txhim kho kev nplij siab hauv kev tsim kho.
3. Kev sib txuas zoo dua
Txawm hais tias MHEC nws tus kheej tsis yog cov nplaum, nws pab cov cement lossis lwm yam khoom siv sib txuas kom sib xyaw nrog lub hauv paus ntau dua los ntawm kev txhim kho qhov ntub ntawm cov mortar thiab ntev lub sijhawm qhib, yog li ntawd tsis ncaj qha txhim kho lub zog sib txuas ntawm cov mortar nrog lub hauv paus, cib, vuas thiab lwm yam khoom siv. Tshwj xeeb tshaj yog nyob rau hauv cov nplaum vuas thiab cov neeg sawv cev sib txuas, MHEC tuaj yeem tsim cov zaj duab xis nplaum sib xws thiab txuas ntxiv mus, uas tso cai rau cov khoom siv kom lo rau lub hauv paus ntau dua, txhim kho kev ua tau zoo ntawm kev sib txuas thiab kev ruaj khov ntawm tag nrho lub cev.
4. Tswj lub sijhawm teeb tsa thiab lub sijhawm tawv ntawm cov mortar
MHEC tuaj yeem ncua cov txheej txheem hydration ntawm cement lossis gypsum hauv mortar, yog li ntawd ntev lub sijhawm teeb tsa ntawm mortar. Qhov no muaj txiaj ntsig zoo rau kev tsim kho hauv qhov kub siab lossis qhov chaw qhuav, thiab tuaj yeem tiv thaiv cov teeb meem kev tsim kho uas tshwm sim los ntawm kev teeb tsa sai dhau, xws li qhov tawg ntawm qhov chaw thiab kev sib txuas tsis muaj zog. Los ntawm kev kho kom raug qhov ntau ntawm MHEC ntxiv, lub sijhawm ua haujlwm ntawm mortar tuaj yeem tswj tau kom raug kom ua tau raws li qhov xav tau ntawm kev tsim kho ntawm ntau yam txheej txheem.
5. Txhim kho qhov tawg tsis kam thiab ua kom ruaj khov ntawm cov mortar
Vim tias MHEC txhim kho qhov kev tuav dej thiab kev ywj pheej ntawm cov mortar, txo qhov kev ntsws thiab kev poob dej thaum ntxov, nws tuaj yeem tiv thaiv qhov tshwm sim ntawm cov kab nrib pleb ntsws thiab txhim kho qhov kev tiv thaiv kab nrib pleb thiab kev ruaj khov ntawm cov mortar thaum siv ntev. Hauv cov txheej txheem rwb thaiv tsev phab ntsa sab nraud lossis cov tsev tiv taus av qeeg, qhov kev ua tau zoo no tseem ceeb heev thiab pab txhawb rau kev ruaj khov thiab lub neej ntawm cov qauv.
6. Muaj kev sib raug zoo nrog lub kaw lus mortar
MHEC, ua ib yam polymer uas tsis yog ionic, muaj kev sib haum xeeb zoo nrog ntau yam khoom siv cementitious xws li cement, lime, gypsum, thiab lwm yam additives (xws li redispersible latex hmoov, dej reducer, antifreeze agent, thiab lwm yam). Qhov no tso cai rau nws siv tau yooj yim rau ntau yam mortar systems, tsis yooj yim rau cov tshuaj lom neeg lossis kev tsis sib haum xeeb ntawm kev ua haujlwm, thiab muab kev ywj pheej ntau dua rau cov mortar qhuav-mixed formulations.
7. Kev hloov pauv tau thiab kev ruaj ntseg ntawm ib puag ncig
MHEC muaj kev hloov pauv zoo rau pH thiab qhov kub thiab txias, ruaj khov zoo hauv cov chaw acidic, nruab nrab lossis alkaline tsis muaj zog, thiab tuaj yeem tswj tau qhov sib xws zoo thiab khaws dej txawm tias nyob hauv cov chaw tsim kho kub siab. Tus cwj pwm no tso cai rau nws siv dav hauv cov tshuab mortar hauv ntau thaj chaw huab cua, tshwj xeeb tshaj yog thaum lub caij ntuj sov.
Methyl hydroxyethyl cellulose (MHEC) ua lub luag haujlwm hloov pauv ntau yamLub luag haujlwm hauv cov tshuaj mortar. Nws muab kev daws teeb meem txhim khu kev qha, ua haujlwm tau zoo thiab tswj tau rau kev tsim kho los ntawm kev txhim kho kev khaws cia dej, txhim kho kev ua haujlwm tau zoo, txhim kho kev nplaum, kho lub sijhawm teeb tsa thiab txhim kho kev tiv thaiv kab nrib pleb thiab kev ruaj khov. Nrog rau kev txhim kho sai ntawm cov ntaub ntawv tsim kho ntsuab thiab cov tshuaj mortars ua ntej, lub luag haujlwm ntawm MHEC yuav dhau los ua qhov tseem ceeb dua, ua tus neeg sawv cev tseem ceeb thiab tseem ceeb hauv cov qauv tshuaj mortar ua tau zoo.
Lub sijhawm tshaj tawm: Lub Rau Hli-21-2025