Hauv cov putty, cement mortar thiab gypsum-based slurry,HPMChydroxypropyl methylcellulose ether feem ntau ua lub luag haujlwm ntawm kev khaws dej thiab thickening, thiab tuaj yeem txhim kho qhov adhesion thiab sag tsis kam ntawm slurry. Cov yam xws li cua kub, kub thiab cua ceev yuav cuam tshuam rau qhov volatilization ntawm dej hauv putty, cement mortar thiab gypsum-based khoom. Yog li ntawd, nyob rau hauv ntau lub caij, muaj qee qhov sib txawv ntawm cov dej khaws cia nyhuv ntawm cov khoom nrog tib tus nqi ntawm HPMC ntxiv. Hauv kev tsim kho tshwj xeeb, cov dej khaws cia nyhuv ntawm slurry tuaj yeem hloov kho los ntawm kev nce lossis txo tus nqi ntawm HPMC ntxiv.
Qhov kev khaws cia dej ntawm methyl cellulose ether nyob rau hauv qhov kub siab yog qhov qhia tseem ceeb los qhia qhov zoo ntawm methyl cellulose ether. Cov khoom zoo heev HPMC series tuaj yeem daws tau qhov teeb meem ntawm kev khaws cia dej nyob rau hauv qhov kub siab. Nyob rau hauv lub caij kub siab, tshwj xeeb tshaj yog nyob rau hauv thaj chaw kub thiab qhuav thiab cov txheej txheem nyias nyias ntawm sab hnub ci, HPMC zoo yog qhov yuav tsum tau los txhim kho kev khaws cia dej ntawm cov slurry. HPMC zoo tuaj yeem hloov cov dej dawb hauv cov mortar mus rau hauv dej khi, yog li tswj tau qhov evaporation ntawm dej los ntawm huab cua kub siab thiab ua tiav kev khaws cia dej siab.
Cov methyl cellulose zoo tuaj yeem sib npaug thiab zoo hauv cov cement mortar thiab gypsum-based cov khoom, thiab qhwv tag nrho cov khoom khov, thiab tsim cov zaj duab xis ntub, thiab cov dej yuav raug tso tawm maj mam dhau lub sijhawm ntev. Muaj kev cuam tshuam hydration tshwm sim, yog li ua kom muaj zog sib txuas thiab lub zog compressive ntawm cov khoom. Yog li ntawd, hauv kev tsim kho lub caij ntuj sov kub siab, txhawm rau kom ua tiav cov txiaj ntsig khaws cia dej, nws yog qhov tsim nyog los ntxiv cov khoom lag luam HPMC zoo hauv qhov ntau txaus raws li cov mis. Yog tias siv cov tshuaj HPMC, kev ua kom tsis txaus, txo qis zog, tawg, thiab voids yuav tshwm sim vim qhuav 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. Thaum qhov kub poob qis, qhov ntau ntawm HPMC ntxiv tuaj yeem maj mam txo qis, thiab tib yam txiaj ntsig khaws cia dej tuaj yeem ua tiav.
Cov txheej txheem tshuaj tiv thaiv tswj hwm qhov tsim tawm ntawmHPMC, thiab nws qhov kev hloov pauv tiav lawm thiab nws qhov sib xws zoo heev. Nws cov kua dej yog qhov tseeb thiab pob tshab, nrog ob peb lub fiber dawb. Kev sib raug zoo nrog cov hmoov roj hmab, cement, txiv qaub ntsuab thiab lwm yam khoom tseem ceeb yog qhov muaj zog tshwj xeeb, uas tuaj yeem ua rau cov khoom tseem ceeb ua si qhov kev ua tau zoo tshaj plaws. Txawm li cas los xij, HPMC nrog cov tshuaj tiv thaiv tsis zoo muaj ntau cov fiber dawb, kev faib tawm tsis sib xws ntawm cov khoom hloov pauv, kev khaws dej tsis zoo thiab lwm yam khoom, ua rau muaj dej ntau ntau hauv huab cua kub. Txawm li cas los xij, qhov hu ua HPMC (hom sib xyaw) nrog ntau yam tsis huv yog qhov nyuaj rau kev sib koom tes nrog ib leeg, yog li kev khaws dej thiab lwm yam khoom tseem phem dua. Thaum siv HPMC tsis zoo, teeb meem xws li lub zog slurry qis, lub sijhawm qhib luv luv, hmoov, tawg, hollowing thiab shedding yuav tshwm sim, uas yuav ua rau muaj kev nyuaj ntawm kev tsim kho thiab txo qhov zoo ntawm lub tsev.
Lub sijhawm tshaj tawm: Plaub Hlis-28-2024