Lub luag haujlwm tseem ceeb ntawm HPMC yog dab tsi hauv kev siv cov hmoov putty

HPMC plays peb lub luag haujlwm hauv cov hmoov putty: thickening, dej tuav, thiab kev tsim kho.
Thickening: Cellulose tuaj yeem ua kom tuab thiab tshem tawm cov tshuaj, ua kom nws zoo ib yam thiab tiv thaiv sagging.
Kev tuav dej: slows down qhuav ntawm putty hmoov thiab pab nyob rau hauv cov tshuaj tiv thaiv ntawm calcium tshauv nyob rau hauv qhov kev txiav txim ntawm dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem muab cov hmoov putty zoo ua haujlwm. HPMC tsis koom nrog cov tshuaj tiv thaiv thiab tsuas yog ua lub luag haujlwm pabcuam. Ntxiv dej rau cov hmoov nplej thiab siv rau ntawm phab ntsa yog cov tshuaj tiv thaiv. Vim tias cov tshuaj tshiab tsim tawm, tshem cov hmoov putty los ntawm phab ntsa, sib tsoo rau hauv cov hmoov, thiab siv nws dua tsis tau vim tias muaj cov khoom tshiab (calcium carbonate) twb tau tsim.
Cov khoom tseem ceeb ntawm grey calcium hmoov yog sib tov ntawm Ca (OH) 2, CaO, thiab ib qho me me ntawm CaCO3. CaO+H2O=Ca (OH) 2- Ca (OH) 2+CO2=CaCO3 ↓+H2O. Grey calcium generates calcium carbonate nyob rau hauv qhov kev txiav txim ntawm CO2 nyob rau hauv dej thiab huab cua, thaum HPMC tsuas khaws cov dej thiab pab nyob rau hauv cov tshuaj tiv thaiv zoo ntawm grey calcium, tsis muaj kev koom tes nyob rau hauv tej tshuaj tiv thaiv nws tus kheej.