Qhuav-sib xyaw mortar khoom rau kev tsim kho kev lag luam tau nce siab ntau xyoo.Cov khoom no tau dhau los ua neeg nyiam rau lawv txoj kev yooj yim, versatility, thiab yooj yim ntawm daim ntawv thov.Ib qho kev nce qib tseem ceeb hauv cov khoom siv khib nyiab qhuav yog siv hydroxypropylmethylcellulose (HPMC) thiab methylhydroxyethylcellulose (MHEC).Cov cellulose ethers no tau siv dav hauv kev tsim cov mortars qhuav thiab muab cov neeg siv nrog ntau qhov zoo.Hauv tsab xov xwm no, peb tham txog qhov zoo ntawm HPMC thiab MHEC hauv cov khoom siv khib nyiab qhuav.
1. Kev tuav dej
Ib qho txiaj ntsig tseem ceeb tshaj plaws ntawm HPMC thiab MHEC hauv cov khoom siv khib nyiab qhuav yog dej tuav.Cov cellulose ethers tuaj yeem tuav cov dej ntau thiab tiv thaiv nws los ntawm evaporating sai heev.Qhov no yog qhov tseem ceeb rau cov khoom sib xyaw qhuav, uas yuav tsum tau hydration tas li rau qhov ua tau zoo.HPMC thiab MHEC ua hauj lwm los ntawm kev tsim ib zaj duab xis nyias nyob ib ncig ntawm cov mortar hais, uas ua rau cov dej evaporation qeeb.Yog li ntawd, lub mortar tseem siv tau rau lub sijhawm ntev dua, txo txoj hauv kev tawg thiab txhim kho daim ntawv cog lus.
2. Txhim kho adhesion
Cov khoom siv khib nyiab qhuav uas siv HPMC thiab MHEC muaj qhov zoo dua adhesion dua li cov khoom khib nyiab qhuav uas tsis muaj cellulose ether.HPMC thiab MHEC muaj cov khoom nplaum zoo heev, kom ntseeg tau tias cov mortar adheres rau substrate thiab nyob rau hauv qhov chaw.Lawv kuj muaj cov yas zoo li nplaum nplaum uas ua rau cov tshuaj khib thiab ua kom yooj yim rau kev thov.Cov khoom no ua rau HPMC thiab MHEC zoo tagnrho rau kev siv ntsug qhov twg lub ntiajteb txawj nqus rub lub mortar rau ntawm phab ntsa.
3. Ua kom ruaj khov
HPMC thiab MHEC hauv cov khoom siv khib nyiab qhuav kuj txhim khu kev ruaj ntseg ntawm cov khoom kawg.Cellulose ethers cuam tshuam nrog cov cement thiab lwm cov khoom xyaw los tsim cov qauv ruaj khov thiab muaj zog.Cov tshuaj khib nyiab uas tsim tawm tsis tshua muaj kev tawg, shrinkage thiab lwm yam kev puas tsuaj.Tsis tas li ntawd, HPMC thiab MHEC ua rau cov mortar tiv taus dej thiab lwm yam khoom, ua kom nws lub neej ua haujlwm ntev.
4. Txhim kho kev ua haujlwm
Cov khoom siv khib nyiab qhuav uas muaj HPMC thiab MHEC muaj kev ua haujlwm zoo thiab ua haujlwm tau yooj yim.Kev ua haujlwm zoo ntawm cov cellulose ethers txhais tau hais tias cov mortars yooj yim sib tov, thov thiab du.Lawv kuj muab kev yooj yim heev, cia cov mortar nthuav dav thiab cog lus tsis muaj kev tawg lossis poob nws cov qauv kev ncaj ncees.Qhov kev hloov pauv no tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv ib puag ncig uas cov khoom siv hauv tsev raug cuam tshuam rau qhov kub thiab txias hloov pauv lossis lwm yam kev ntxhov siab.
5. Ua kom zoo nkauj
Thaum ntxiv rau cov tshuaj khib nyiab qhuav, HPMC thiab MHEC muab cov yam ntxwv tshwj xeeb.Cellulose ethers tsim ib tug du, creamy kev ntxhib los mos uas txhim khu kev zoo nkauj ntawm lub mortar.Qhov kev ntxhib los mos no kuj ua rau cov mortar yooj yim ua hauj lwm nrog vim nws yuav tsis clump los yog clump.Yog li ntawd cov tsos ntawm cov khoom tiav qhuav-sib xyaw mortar yog ib yam thiab zoo nkauj.
6. Yooj yim rau kev thov
Lwm qhov zoo dua ntawm HPMC thiab MHEC hauv cov khoom siv tshuaj khib nyiab qhuav yog qhov yooj yim ntawm daim ntawv thov.Cov cellulose ethers no yooj yim sib xyaw thiab siv tau thiab tsis tas yuav muaj kev paub tshwj xeeb los siv.Cov neeg cog qoob loo tuaj yeem siv cov tshuaj khib nyiab uas siv cov txheej txheem ib txwm siv xws li txhuam, chais, trowels lossis phom phom.Qhov no ua rau cov khib nyiab qhuav uas muaj HPMC thiab MHEC yog qhov kev xaiv zoo tshaj plaws rau cov kws tsim khoom thiab DIYers ib yam nkaus.
7. Tus nqi zoo
Cov khoom siv khib nyiab qhuav uas muaj HPMC thiab MHEC kuj tau txais txiaj ntsig zoo.Cov cellulose ethers no pheej yig thiab tsuas yog xav tau me me kom ua tiav cov txiaj ntsig xav tau.Tsis tas li ntawd, HPMC thiab MHEC tso cai rau cov pov tseg tsawg dua, vim tias cov mortar nyob twj ywm hydrated ntev dua.Yog li ntawd, tsis tas yuav tsum tau ua dua tshiab lossis kho dua tshiab, txo cov nqi khoom siv tag nrho.
Kev siv HPMC thiab MHEC hauv cov khoom siv khib nyiab qhuav muaj ntau yam txiaj ntsig rau kev tsim kho kev lag luam.Cov cellulose ethers no txhim khu cov dej tuav, adhesion, durability, processability, zoo nkauj thiab yooj yim ntawm kev siv.Ntxiv rau, lawv tau txais txiaj ntsig zoo, ua rau lawv muaj txiaj ntsig zoo rau cov tsim thiab cov tswv tsev.Li no, kev saws me nyuam ntawm cov cellulose ethers nyob rau hauv qhuav-mix mortar ntau lawm yog zoo li yuav loj hlob ntxiv nyob rau hauv lub xyoo tom ntej raws li cov neeg tsim nrhiav los tsim cov qauv ruaj khov thiab txhim khu kev qha.
Post lub sij hawm: Sep-04-2023