HPMC Hydroxypropyl methyl celluloseNyob rau hauv cov cement mortar thiab gypsum slurry, feem ntau ua lub luag haujlwm ntawm dej tuav thiab thickening, tuaj yeem txhim kho qhov adhesion thiab sag kuj ntawm slurry.
Cov huab cua kub, qhov kub thiab cua siab npaum li cas tuaj yeem cuam tshuam tus nqi evaporation ntawm cov dej hauv cov cement mortar thiab gypsum raws li cov khoom. Yog li nyob rau lub caij sib txawv, ntxiv hydroxypropyl methyl cellulose tib tus nqi ntawm cov khoom tuav dej muaj qee qhov sib txawv. Hauv kev tsim kho vaj tse, cov dej tuav cov nyhuv ntawm slurry tuaj yeem hloov kho los ntawm kev nce lossis txo tus nqi ntawm HPMC. Kev tuav dej ntawm methyl cellulose ether ntawm qhov kub thiab txias yog ib qho tseem ceeb qhia kom paub qhov zoo ntawm methyl cellulose ether.
Zoo heevhydroxypropyl methyl celluloseseries cov khoom lag luam tuaj yeem daws qhov teeb meem ntawm cov dej tuav hauv qhov kub thiab txias. Nyob rau hauv lub caij kub kub, tshwj xeeb tshaj yog nyob rau hauv kub thiab qhuav thiab nyias txheej tsim nyob rau hauv tshav ntuj sab, yuav tsum tau zoo HPMC los txhim kho cov dej tuav ntawm slurry; hydroxypropyl methyl cellulose (HPMC), uniformity yog zoo heev, nws yog ib tug oxygen thiab oxygen hydroxypropyl pawg tusyees faib nyob rau hauv lub cellulose saw, tuaj yeem txhim kho cov hydroxyl thiab ether oxygen thiab dej ntawm qhov tseem ceeb sib koom ua ke hydrogen bonding peev xwm, ua kom dej dawb ntawm hydration, thiaj li ua tau zoo tswj cov huab cua kub los ntawm cov dej noo kom evaporate, Ua tiav cov dej khaws cia siab.
Kev ua tau zoo ntawm hydroxypropyl methyl cellulose tuaj yeem ua kom zoo sib xws thiab cuam tshuam zoo hauv cov khoom siv cement mortar thiab plaster, thiab pob tag nrho cov khoom siv, thiab tsim ib txheej ntawm wetting zaj duab xis, cov dej noo nyob rau hauv lub hauv paus rau lub sij hawm ntev maj mam tso tawm, thiab inorganic cementitious khoom hydration tshuaj tiv thaiv. , yog li txhawm rau xyuas kom meej lub zog ntawm daim ntawv cog lus thiab compressive zog ntawm cov ntaub ntawv.
Hauv kev tsim kho, txhawm rau ua tiav cov txiaj ntsig ntawm kev txuag dej, yuav tsum tau ntxiv cov khoom zooHPMCcov khoom raws li cov qauv, txwv tsis pub, yuav qhuav sai heev los ntawm tsis txaus hydration, lub zog txo, tawg, hollow nruas thiab shedding zoo teeb meem, tab sis kuj yuav ua rau kom cov neeg ua hauj lwm nyuaj kev tsim kho. Raws li qhov kub thiab txias, cov dej HPMC tuaj yeem txo qis, thiab tib cov dej tuav tau tuaj yeem ua tiav.
Post lub sij hawm: Apr-26-2024