Qhov viscosity tsim nyog ntawm hydroxypropyl methylcellulose (HPMC) 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.
Cov txheej txheem yaj ntawm hydroxypropyl methylcellulose (HPMC) yog dab tsi?
(1) Kev Dawb: Txawm hais tias Baidu tsis tuaj yeem txiav txim siab seb HPMC puas yooj yim siv, thiab yog tias cov neeg sawv cev dawb ntxiv thaum lub sijhawm tsim khoom, nws qhov zoo yuav raug cuam tshuam. Txawm li cas los xij, feem ntau ntawm cov khoom zoo muaj kev dawb zoo.
(2) Kev Zoo: Qhov zoo ntawm HPMC feem ntau muaj 80 mesh thiab 100 mesh, thiab 120 mesh tsawg dua. Feem ntau HPMC tsim tawm hauv Hebei yog 80 mesh. Qhov zoo dua qhov zoo, feem ntau hais lus, qhov zoo dua.
(3) Kev xa hluav taws xob: muab hydroxypropyl methylcellulose (HPMC) rau hauv dej kom tsim tau cov pob tshab colloid, thiab saib nws lub teeb xa hluav taws xob. Qhov ntau dua qhov kev xa hluav taws xob, qhov zoo dua, qhia tias muaj tsawg dua insolubles hauv nws. . Lub permeability ntawm cov reactors ntsug feem ntau zoo, thiab ntawm cov reactors kab rov tav yog qhov phem dua, tab sis nws tsis txhais tau tias qhov zoo ntawm cov reactors ntsug zoo dua li ntawm cov reactors kab rov tav, thiab cov khoom zoo yog txiav txim siab los ntawm ntau yam. (4) Lub ntiajteb txawj nqus tshwj xeeb: Qhov loj dua qhov hnyav tshwj xeeb, qhov hnyav dua qhov zoo dua. Qhov tshwj xeeb yog loj, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl pawg hauv nws yog siab, thiab cov ntsiab lus ntawm hydroxypropyl pawg yog siab, cov dej khaws cia zoo dua.
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?
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 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 tshauv calcium 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 tshauv calcium, thiab tsis koom nrog hauv kev tshuaj tiv thaiv nws tus kheej.
Kev sib raug zoo ntawm viscosity thiab kub ntawm HPMC, dab tsi yuav tsum tau them sai sai rau hauv kev siv ua haujlwm?
Qhov viscosity ntawm HPMC yog inversely proportional rau qhov kub thiab txias, uas yog, qhov viscosity nce ntxiv thaum qhov kub thiab txias txo qis. Qhov viscosity ntawm cov khoom uas peb feem ntau xa mus rau yog hais txog qhov tshwm sim ntawm kev sim ntawm nws 2% aqueous kua ntawm qhov kub ntawm 20 degrees Celsius.
Hauv kev siv ua haujlwm, yuav tsum nco ntsoov tias nyob rau hauv thaj chaw uas muaj qhov sib txawv ntawm qhov kub thiab txias ntawm lub caij ntuj sov thiab lub caij ntuj no, nws raug pom zoo kom siv cov viscosity qis dua thaum lub caij ntuj no, uas yog qhov zoo dua rau kev tsim kho. Txwv tsis pub, thaum qhov kub qis, qhov viscosity ntawm cellulose yuav nce ntxiv, thiab tes yuav hnyav thaum khawb.
Nruab nrab viscosity: 75000-100000 feem ntau yog siv rau putty
Vim li cas: kev khaws dej zoo
Viscosity siab: 150000-200000 feem ntau yog siv rau polystyrene particle insulation mortar roj hmab hmoov thiab vitrified microbead insulation mortar.
Vim li cas: viscosity siab, mortar tsis yooj yim poob tawm, sagging, uas txhim kho kev tsim kho.
Lub sijhawm tshaj tawm: Tsib Hlis-18-2023