Hauv putty, cement mortar thiab gypsum-based slurry,HPMChydroxypropyl methylcellulose ether tsuas yog ua lub luag haujlwm ntawm dej tuav thiab thickening, thiab tuaj yeem txhim kho qhov adhesion thiab sag kuj ntawm slurry. Cov yam ntxwv xws li huab cua kub, kub thiab cua siab ceev yuav cuam tshuam rau volatilization tus nqi ntawm cov dej hauv putty, cement mortar thiab gypsum-based khoom. Yog li ntawd, nyob rau lub caij sib txawv, muaj qee qhov sib txawv ntawm cov dej tuav cov khoom ntawm cov khoom nrog tib tus nqi ntawm HPMC ntxiv. Hauv kev tsim kho tshwj xeeb, cov dej tuav cov nyhuv ntawm cov slurry tuaj yeem hloov kho los ntawm kev nce lossis txo tus nqi ntawm HPMC ntxiv.
Kev tuav dej ntawm methyl cellulose ether nyob rau hauv qhov kub thiab txias yog ib qho tseem ceeb qhia kom paub qhov zoo ntawm methyl cellulose ether. HPMC series cov khoom lag luam zoo 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, high-zoo HPMC yuav tsum tau los txhim kho cov dej tuav ntawm slurry. High-quality HPMC tuaj yeem tig cov dej dawb hauv cov mortar rau hauv cov dej khi, yog li tswj tau cov dej evaporation los ntawm huab cua kub thiab ua kom cov dej tuav tau zoo.
Cov khoom zoo methyl cellulose tuaj yeem sib npaug thiab ua haujlwm zoo hauv cov cement mortar thiab gypsum-based khoom, thiab qhwv tag nrho cov khoom siv, thiab tsim cov yeeb yaj kiab ntub dej, thiab cov dej yuav raug tso tawm maj mam dhau lub sijhawm ntev. Cov tshuaj tiv thaiv hydration tshwm sim, yog li ua kom lub zog ntawm daim ntawv cog lus thiab compressive zog ntawm cov khoom. Yog li ntawd, nyob rau hauv high-temperature lub caij ntuj sov tsim, thiaj li yuav ua tau cov dej tuav nyhuv, nws yog tsim nyog los ntxiv high-zoo HPMC cov khoom nyob rau hauv txaus kom muaj nuj nqis raws li cov mis nyuj. Yog tias siv HPMC compound, dej tsis txaus, txo lub zog, tawg, thiab voids yuav tshwm sim vim ziab ntau dhau. Cov teeb meem zoo xws li nruas thiab shedding kuj ua rau muaj kev nyuaj ntawm kev tsim kho rau cov neeg ua haujlwm. Raws li qhov kub thiab txias, tus nqi ntawm HPMC ntxiv tuaj yeem txo qis, thiab tib cov dej tuav tau tuaj yeem ua tiav.
Cov txheej txheem tshuaj tiv thaiv precisely tswj cov khoom ntawmHPMC, thiab nws qhov kev hloov pauv tau ua tiav thiab nws qhov sib xws yog qhov zoo heev. Nws cov tshuaj aqueous yog ntshiab thiab pob tshab, nrog ob peb fibers dawb. Kev sib raug zoo nrog cov hmoov roj hmab, cement, txiv qaub thiab lwm yam ntaub ntawv tseem ceeb yog qhov tshwj xeeb, uas tuaj yeem ua rau cov ntaub ntawv tseem ceeb ua tau zoo tshaj plaws. Txawm li cas los xij, HPMC nrog cov tshuaj tiv thaiv tsis zoo muaj ntau cov fibers dawb, tsis sib xws ntawm cov khoom siv hloov pauv, cov dej tsis zoo thiab lwm yam khoom, ua rau muaj dej ntau hauv huab cua kub. Txawm li cas los xij, lub npe hu ua HPMC (compound type) nrog ntau cov impurities yog qhov nyuaj rau kev sib koom tes, yog li kev tuav dej thiab lwm yam khoom tseem ceeb dua. Thaum siv HPMC tsis zoo, cov teeb meem xws li lub zog slurry tsawg, lub sij hawm qhib luv luv, hmoov av, tawg, hollowing thiab shedding yuav tshwm sim, uas yuav ua rau kom qhov nyuaj ntawm kev tsim kho thiab txo qhov zoo ntawm lub tsev.
Lub sij hawm xa tuaj: Plaub Hlis-28-2024