Raws li ib qho tseem ceeb ntawm cellulose ether admixtures nyob rau hauv qhuav hmoov mortar, hydroxypropyl methylcellulose muaj ntau yam dej num hauv mortar. Lub luag haujlwm tseem ceeb tshaj plaws ntawm hydroxypropyl methylcellulose hauv cement mortar yog dej tuav thiab thickening. Tsis tas li ntawd, vim nws txoj kev sib cuam tshuam nrog cov cement system, nws tuaj yeem ua lub luag haujlwm pabcuam hauv kev nkag mus rau huab cua, kev teeb tsa rov qab, thiab txhim kho tensile daim ntawv cog lus. nyhuv.
Qhov tseem ceeb tshaj plaws kev ua tau zoo ntawm hydroxypropyl methylcellulose hauv mortar yog dej tuav. Raws li ib tug cellulose ether admixture nyob rau hauv mortar, hydroxypropyl methylcellulose yuav siv tau nyob rau hauv yuav luag tag nrho cov khoom mortar, feem ntau yog vim nws cov dej tuav. Feem ntau hais lus, cov dej tuav ntawm hydroxypropyl methylcellulose muaj feem xyuam rau nws cov viscosity, qib kev hloov pauv thiab qhov loj me.
Hydroxypropyl methylcellulose yog siv los ua cov thickener, thiab nws cov nyhuv thickening muaj feem xyuam rau qib ntawm kev hloov, particle loj, viscosity thiab degree ntawm kev hloov kho ntawm hydroxypropyl methylcellulose. Feem ntau hais lus, qhov siab dua qhov kev hloov pauv thiab viscosity ntawm cellulose ether, thiab qhov me me, qhov pom tseeb ntawm cov nyhuv thickening.
Hauv hydroxypropyl methylcellulose, kev taw qhia ntawm methoxy pawg txo cov zog saum npoo ntawm cov tshuaj aqueous uas muaj hydroxypropyl methylcellulose, yog li hydroxypropyl methylcellulose muaj cov cua nkag mus rau cov cement mortar. Qhia kom tsim nyog cov npuas npuas hauv lub mortar, vim "pob nyhuv" ntawm cov pa npuas,
Kev tsim kho kev ua tau zoo ntawm cov mortar yog txhim kho, thiab tib lub sijhawm, kev taw qhia ntawm cov pa npuas ua rau cov khoom tso zis ntau ntxiv. Tau kawg, tus nqi ntawm huab cua nkag yuav tsum tau tswj. Kev nkag mus rau huab cua ntau dhau yuav ua rau muaj kev cuam tshuam tsis zoo rau lub zog ntawm mortar.
Hydroxypropyl methylcellulose yuav ncua kev teeb tsa ntawm cov cement, yog li ua kom qeeb ntawm qhov chaw thiab cov txheej txheem hardening ntawm cov cement, thiab ncua lub sijhawm qhib ntawm mortar raws li, tab sis cov nyhuv no tsis zoo rau mortar hauv cheeb tsam txias dua.
Raws li cov khoom siv polymer ntev ntev, hydroxypropyl methylcellulose tuaj yeem txhim kho kev sib raug zoo nrog cov substrate tom qab ntxiv rau hauv cov cement system nyob rau hauv lub premise ntawm tag nrho tswj cov ya raws nyob rau hauv lub slurry.
Piv txwv li, kev ua haujlwm ntawmHPMCnyob rau hauv mortar mas suav nrog: dej tuav, thickening, ncua sij hawm teem caij, entraining huab cua thiab txhim kho tensile daim ntawv cog lus lub zog, thiab lwm yam.
Post lub sij hawm: Dec-19-2022