1. Qhov viscosity tsim nyog ntawm HPMC yog dab tsi?
——Lus Teb: Feem ntau, 100,000 yuan txaus rau hmoov putty. Qhov yuav tsum tau rau mortar yog siab dua, thiab 150,000 yuan yog xav tau rau kev siv yooj yim. Ntxiv mus, lub luag haujlwm tseem ceeb tshaj plaws ntawm HPMC yog kev khaws dej, ua raws li kev tuab. Hauv hmoov putty, tsuav yog qhov khaws dej zoo thiab viscosity qis (70,000-80,000), nws kuj ua tau. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov khaws dej. Thaum viscosity tshaj 100,000, qhov viscosity yuav cuam tshuam rau qhov khaws dej. Tsis ntau lawm.
2. Cov cim qhia tseem ceeb ntawm kev siv tshuab yog dab tsi?HPMC?
——Teb: Cov ntsiab lus Hydroxypropyl thiab viscosity, feem ntau cov neeg siv txhawj xeeb txog ob qho cim no. Cov neeg uas muaj cov ntsiab lus hydroxypropyl siab feem ntau muaj kev khaws cia dej zoo dua. Ib qho uas muaj viscosity siab muaj kev khaws cia dej zoo dua, piv rau (tsis yog kiag li), thiab ib qho uas muaj viscosity siab zoo dua siv rau hauv cov cement mortar.
3. Lub luag haujlwm tseem ceeb ntawm daim ntawv thov HPMC hauv cov hmoov putty yog dab tsi, thiab nws puas tshwm sim los ntawm tshuaj lom neeg?
——Teb: Hauv cov hmoov putty, HPMC ua peb lub luag haujlwm ntawm kev ua kom tuab, khaws dej thiab tsim kho. Kev ua kom tuab: Cellulose tuaj yeem ua kom tuab kom ncua thiab khaws cov tshuaj sib xws nce thiab nqis, thiab tiv taus kev poob qis. Kev khaws dej: ua kom cov hmoov putty qhuav qeeb qeeb, thiab pab cov tshauv calcium kom ua haujlwm raws li dej. 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 hauv kev tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm pabcuam. Ntxiv dej rau 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 tshauv calcium yog: sib xyaw ntawm Ca (OH) 2, CaO thiab me me ntawm CaCO3, CaO + H2O = Ca (OH) 2 —Ca (OH) 2 + CO2 = CaCO3↓ + H2O Cov calcium tshauv nyob hauv dej thiab huab cua Hauv qab qhov kev ua ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas yog khaws dej, pab txhawb kev tshuaj tiv thaiv zoo dua ntawm cov tshauv calcium, thiab tsis koom nrog hauv kev tshuaj tiv thaiv nws tus kheej.
4. HPMC yog ib qho non-ionic cellulose ether, yog li ntawd non-ionic yog dab tsi?
——Lus Teb: Hauv cov lus yooj yim, cov non-ions yog cov tshuaj uas yuav tsis ionize hauv dej. Ionization yog hais txog cov txheej txheem uas cov electrolyte raug dissociated mus rau hauv cov ions them uas tuaj yeem txav mus los tau yooj yim hauv cov kuab tshuaj tshwj xeeb (xws li dej, cawv). Piv txwv li, sodium chloride (NaCl), cov ntsev uas peb noj txhua hnub, yaj hauv dej thiab ionizes los tsim cov sodium ions (Na +) uas txav tau yooj yim uas muaj nqi zoo thiab chloride ions (Cl) uas muaj nqi tsis zoo. Uas yog hais tias, thaum HPMC raug muab tso rau hauv dej, nws yuav tsis dissociate mus rau hauv cov ions them, tab sis muaj nyob rau hauv daim ntawv ntawm cov molecules.
5. Puas muaj kev sib raug zoo ntawm qhov poob ntawm cov hmoov putty thiab HPMC?
——Teb: Cov hmoov poob ntawm cov hmoov putty feem ntau yog cuam tshuam nrog qhov zoo ntawm cov tshauv calcium, thiab muaj tsawg yam ua rau HPMC. Cov calcium tsawg ntawm grey calcium thiab qhov sib piv tsis raug ntawm CaO thiab Ca (OH) 2 hauv grey calcium yuav ua rau cov hmoov poob. Yog tias nws muaj qee yam ua rau HPMC, ces yog tias cov dej khaws cia ntawm HPMC tsis zoo, nws tseem yuav ua rau cov hmoov poob
6. Yuav ua li cas xaiv ib qho uas tsim nyogHPMCrau ntau lub hom phiaj sib txawv?
——Teb: Kev siv cov hmoov putty: qhov yuav tsum tau ua yog qis heev, thiab qhov viscosity yog 100,000, uas txaus. Qhov tseem ceeb yog kom dej zoo. Kev siv cov mortar: qhov yuav tsum tau ua siab dua, viscosity siab, 150,000 zoo dua. Kev siv cov kua nplaum: cov khoom lag luam tam sim ntawd nrog viscosity siab yog qhov yuav tsum tau ua.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024