Tus nqi ntawm HPMC siv rau hauv kev siv tiag tiag sib txawv nyob ntawm huab cua, kub, qhov zoo ntawm cov hmoov calcium tshauv hauv zos, cov mis ntawm cov hmoov putty thiab "qhov zoo uas cov neeg siv khoom xav tau". Feem ntau hais lus, nws yog ntawm 4 kg thiab 5 kg. Piv txwv li: feem ntau ntawm cov hmoov putty hauv Beijing yog 5 kg; feem ntau ntawm cov hmoov putty hauv Guizhou yog 5 kg thaum lub caij ntuj sov thiab 4.5 kg thaum lub caij ntuj no; tus nqi ntawm putty hauv Yunnan yog qhov me me, feem ntau 3 kg txog 4 kg, thiab lwm yam.
Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) rau kev tsim cov hmoov putty yog dab tsi?
Feem ntau cov hmoov putty yog 100,000 yuan, thiab qhov yuav tsum tau rau cov mortar yog siab dua, thiab 150,000 yuan yog qhov xav tau rau kev siv yooj yim. Ntxiv mus, qhov tseem ceeb tshaj plaws ntawm HPMC yog kev khaws cia dej, ua raws li kev tuab. Hauv cov hmoov putty, tsuav yog qhov khaws cia dej zoo thiab qhov viscosity qis (70,000-80,000), nws kuj ua tau. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov khaws cia dej. Thaum qhov viscosity tshaj 100,000, qhov viscosity yuav cuam tshuam rau qhov khaws cia dej. Tsis ntau lawm.
Lub luag haujlwm tseem ceeb ntawm daim ntawv thov HPMC hauv putty hmoov yog dab tsi?
Hauv cov hmoov putty, HPMC ua peb lub luag haujlwm ntawm thickening, dej khaws cia thiab kev tsim kho.
Ua kom tuab: Cellulose tuaj yeem ua kom tuab kom ncua thiab ua kom cov tshuaj sib npaug zoo li qub, thiab tiv taus kev sagging.
Kev khaws dej: ua kom cov hmoov putty qhuav qeeb qeeb, thiab pab cov tshauv calcium kom teb raws li qhov dej ua.
Kev Tsim Kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo.
HPMC tsis koom nrog rau hauv kev tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm pabcuam xwb. Ntxiv dej rau hauv cov hmoov putty thiab muab tso rau ntawm phab ntsa yog kev tshuaj lom neeg, vim tias cov tshuaj tshiab tau tsim. Yog tias koj tshem cov hmoov putty ntawm phab ntsa ntawm phab ntsa, zom nws ua hmoov, thiab siv nws dua, nws yuav tsis ua haujlwm vim tias cov tshuaj tshiab (calcium carbonate) tau tsim. ) ib yam nkaus. Cov khoom tseem ceeb ntawm cov hmoov calcium tshauv yog: kev sib xyaw ntawm Ca (OH) 2, CaO thiab me me ntawm CaCO3, CaO H2O = Ca (OH) 2 - Ca (OH) 2 CO2 = CaCO3↓ H2O Lub luag haujlwm ntawm cov calcium tshauv hauv CO2 hauv dej thiab huab cua Hauv qab no, calcium carbonate yog tsim, thaum HPMC tsuas yog khaws dej, pab txhawb kev tshuaj tiv thaiv zoo dua ntawm cov calcium tshauv, thiab tsis koom nrog hauv kev tshuaj tiv thaiv nws tus kheej.
Lub sijhawm tshaj tawm: Tsib Hlis-09-2023