Tus nqi ntawm HPMC siv nyob rau hauv cov ntaub ntawv siv tau txawv nyob ntawm seb qhov kev nyab xeeb, qhov kub thiab txias, qhov zoo ntawm cov hmoov tshauv calcium hauv zos, cov mis ntawm putty hmoov thiab "zoo xav tau los ntawm cov neeg siv khoom".Feem ntau hais lus, nws yog nruab nrab 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 nyob rau lub caij ntuj sov thiab 4.5 kg nyob rau lub caij ntuj no;Tus nqi ntawm putty nyob rau hauv Yunnan yog me me, feem ntau 3 kg mus rau 4 kg, thiab lwm yam.
Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropyl methylcellulose (HPMC) rau kev tsim cov hmoov putty?
Putty hmoov feem ntau yog 100,000 yuan, 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, lub viscosity yuav cuam tshuam cov dej tuav.Tsis ntau ntxiv lawm.
Lub luag haujlwm tseem ceeb ntawm daim ntawv thov ntawm HPMC hauv putty hmoov yog dab tsi?
Hauv cov hmoov putty, HPMC plays peb lub luag haujlwm ntawm thickening, dej tuav thiab kev tsim kho.
Thickening: Cellulose tuaj yeem ua kom tuab kom tshem tawm thiab ua kom cov tshuaj sib txawv nce thiab nqis, thiab tiv thaiv sagging.
Kev tuav dej: ua kom cov hmoov putty qhuav maj mam, thiab pab cov hmoov tshauv calcium kom hnov mob hauv qab 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 cov tshuaj tiv thaiv, 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 H2O = Ca(OH) 2—Ca(OH)2 CO2 = CaCO3↓ H2O Lub luag haujlwm ntawm cov hmoov tshauv calcium. Nyob rau hauv CO2 hauv dej thiab huab cua Nyob rau hauv cov xwm txheej no, calcium carbonate yog tsim, thaum HPMC tsuas khaws cov dej, pab cov tshuaj tiv thaiv zoo ntawm cov tshauv calcium, thiab tsis koom nrog cov tshuaj tiv thaiv nws tus kheej.
Post lub sij hawm: May-09-2023