Kev Sib Tham Txog Kev Siv Hydroxypropyl Methyl Cellulose hauv Putty Powder
Jan 12, 2023
Kev Sib Tham Txog Kev Siv Hydroxypropyl Methyl Cellulose hauv Putty Powder
Niaj hnub no peb yuav coj koj mus rau to taub lub luag hauj lwm ntawm hydroxypropyl methylcellulose nyob rau hauv putty hmoov. Feem ntau hais lus, nws muaj peb txoj haujlwm ntawm thickening, dej tuav thiab kev tsim kho.
1. Thickening: Cellulose tuaj yeem ua kom tuab kom tshem tawm thiab ua kom cov tshuaj sib txawv nce thiab nqis, thiab tiv thaiv sagging.
2. Kev tuav dej: ua kom cov hmoov putty qhuav maj mam, thiab pab cov hmoov tshauv calcium kom hnov mob hauv qab dej.
3. Kev tsim kho: cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo.
Hydroxypropyl methylcellulose HPMC tsis koom nrog cov tshuaj tiv thaiv tshuaj, tab sis tsuas yog ua lub luag haujlwm pabcuam. Ntxiv dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog cov tshuaj tiv thaiv, vim hais tias cov tshuaj tshiab yog tsim. Yog tias koj tshem cov hmoov putty rau ntawm phab ntsa ntawm phab ntsa, zom rau hauv cov hmoov, thiab siv nws dua, nws yuav tsis ua haujlwm vim tias cov tshuaj tshiab (calcium carbonate) tau tsim. ) thiab. Cov khoom tseem ceeb ntawm cov hmoov tshauv calcium hmoov yog: sib tov ntawm Ca(OH)2, CaO thiab ib qho me me ntawm CaCO3, CaO ntxiv rau H2O=}Ca(OH)2—Ca(OH)2 ntxiv CO{{6 }}CaCO3↓ ntxiv rau H2O tshauv calcium hauv dej thiab huab cua Raws li kev ua ntawm CO2, calcium carbonate yog tsim, thaum HPMC tsuas khaws dej, pab cov tshuaj tiv thaiv zoo ntawm cov tshauv calcium, thiab tsis koom nrog cov tshuaj tiv thaiv nws tus kheej.
Feem ntau, 100, 000 yuan yog txaus rau cov hmoov putty, thiab qhov yuav tsum tau rau mortar yog siab dua, thiab 150, 000 yuan yuav tsum tau siv yooj yim. Ntxiv mus, qhov tseem ceeb tshaj plaws ua haujlwm ntawm HPMC yog dej tuav, ua raws li thickening. Hauv cov hmoov putty, tsuav yog cov dej tuav tau zoo thiab cov viscosity tsawg (70, 000-80,000), kuj tseem tuaj yeem ua tau. Tau kawg, qhov siab dua qhov viscosity, qhov zoo dua qhov txheeb ze dej tuav. Thaum lub viscosity siab tshaj 100, 000, viscosity yuav cuam tshuam cov dej tuav. Tsis ntau ntxiv lawm.