Tus nqi ntawm HPMC siv hauv kev siv cov kev sib txawv ntawm cov huab cua, qhov zoo ntawm cov hmoov av hauv cheeb tsam, cov hmoov txhuas thiab cov neeg siv khoom zoo ". 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 thaum lub caij ntuj no; Tus nqi ntawm putty nyob rau hauv Yunnan yog qhov me me, feem ntau 3 kg mus rau 4 kg, thiab lwm yam.
Dab tsi yog qhov tsim nyog viscosity ntawm hydroxypropylencellulose (HPMC) rau kev tsim cov hmoov noj ua ke?
Putty hmoov feem ntau yog 100,000 yuan, thiab cov cai rau tshuaj khib tau ntau dua, thiab Yuan yuav tsum tau siv yooj yim. Ntxiv mus, cov haujlwm tseem ceeb tshaj plaws ntawm HPMC yog dej tuav, ua raws li thickening. Nyob rau hauv cov hmoov putty, tsuav li lub taub dej ceev yog qhov zoo thiab lub viscosity yog tsawg (70,000-80,000), nws tseem ua tau. Ntawm chav kawm, qib siab dua viscosity, zoo dua cov txheeb ze cov dej rov qab khaws cia. Thaum lub viscosity tshaj 100,000, lub viscosity yuav cuam tshuam rau cov dej tuav tseg. Tsis ntau ntxiv lawm.
Lub ntsiab muaj nuj nqi ntawm daim ntawv thov HPMC yog dab tsi?
Hauv cov hmoov putty, HPMC ua si peb lub luag haujlwm ntawm thickening, dej tuav thiab tsim kho.
Thickening: cellulose tuaj yeem ua tuab rau ncua thiab ua kom cov tshuaj daws teeb meem nce thiab nqis, thiab tiv taus sagging.
Dej khaws cia: Ua cov hmoov ua kom qhuav maj mam, thiab pab cov ntug dej tshauv kom muaj kev cuam tshuam hauv kev ua dej.
Kev tsim kho: Cellulose muaj cov nyhuv muaj lubricating nyhuv, uas tuaj yeem ua rau cov hmoov puty muaj kev tsim kho zoo.
HPMC tsis koom nrog kev siv tshuaj lom neeg, tab sis tsuas yog ua lub luag haujlwm pab pawg. Ntxiv cov dej rau cov hmoov putty thiab muab tso rau ntawm phab ntsa yog tshuaj lom neeg cov tshuaj tiv thaiv, vim tias cov tshuaj tshiab tau tsim. Yog tias koj tshem tawm cov hmoov putty ntawm phab ntsa los ntawm phab ntsa, thiab siv nws dua, nws yuav tsis ua haujlwm vim tias cov khoom siv hluav taws xob (calcium carbonate) tau tsim. ) Ib yam nkaus. Lub hauv paus tseem ceeb ntawm cov hmoov tshauv calcium hmoov yog: sib xyaw ntawm Ca (Oh) 2, CAO thiab ib qho me me ntawm CaT2-CA (H2O lub luag haujlwm ntawm cov ntug dej tshauv Hauv CO2 hauv dej thiab huab cua nyob rau hauv cov mob no, calcium carbonate yog tsim tawm, thaum HPMC tsuas yog khaws cov tshuaj ntsuab, thiab tsis koom nrog txhua yam kev xav.
Lub Sijhawm Post: Lub Tsib Hlis-09-2023