Soluble hydroxypropyl methyl cellulose (HPMC) yog ib yam uas tsis yog-ionic cellulose ether, uas yog tsim los ntawm ntuj polymer cellulose los ntawm ib tug series ntawm tshuaj ua.Hypromellose (HPMC) yog cov hmoov dawb uas yaj hauv dej txias los tsim cov kua nplaum, kua nplaum.Nws muaj cov yam ntxwv ntawm thickening, adhesion, dispersion, emulsification, film forming, suspension, adsorption, gelation, deg kev ua si, dej tuav thiab kev tiv thaiv colloid.Kev tuav dej yog ib qho cuab yeej tseem ceeb ntawm hypromellose HPMC, uas tseem muaj kev txhawj xeeb los ntawm ntau lub tuam txhab ntub dej sib xyaw hauv Suav teb.Cov yam ntxwv cuam tshuam rau cov dej khaws cia ntawm cov khib nyiab ntub dej muaj xws li tus nqi ntawm HPMC, viscosity ntawm HPMC, qhov loj me thiab qhov kub ntawm ib puag ncig.hypromellose HPMC plays lub luag haujlwm tseem ceeb hauv mortar hauv peb yam: nws cov dej tuav tau zoo, nws cov nyhuv ntawm cov tshuaj khib nyiab thiab thixotropy, thiab nws cov kev cuam tshuam nrog cov cement.Kev tuav dej ntawm cov cellulose ether nyob ntawm qhov nqus dej ntawm lub hauv paus, muaj pes tsawg leeg ntawm mortar, thickness ntawm mortar, dej xav tau ntawm mortar thiab lub sijhawm teem sijhawm ntawm cov khoom siv.Qhov ntau pob tshab hypromellose, qhov zoo dua cov dej tuav.
Cov yam ntxwv cuam tshuam rau cov dej tuav ntawm mortar suav nrog viscosity ntawm cellulose ether, tus nqi ntxiv, particle fineness thiab kev pabcuam kub.Qhov ntau dua qhov viscosity ntawm cellulose ether, qhov dej tuav tau zoo dua.Viscosity yog qhov tseem ceeb ntawm HPMC kev ua haujlwm.Rau tib yam khoom, ntsuas los ntawm ntau txoj kev ntawm viscosity tshwm sim txawv heev, thiab qee qhov txawm tias ob npaug qhov sib txawv.Yog li ntawd, thaum sib piv viscosity, yuav tsum nyob rau hauv tib txoj kev sim ntawm, nrog rau qhov kub thiab txias, rotor thiab lwm yam.Feem ntau hais lus, qhov siab dua qhov viscosity, qhov zoo dua cov dej tuav.Txawm li cas los xij, qhov siab dua qhov viscosity yog, qhov siab dua qhov hnyav molecular ntawm HPMC yog, qhov solubility ntawm HPMC yuav txo qis raws li, uas muaj qhov tsis zoo rau lub zog thiab kev tsim kho ntawm mortar.Qhov siab dua qhov viscosity, qhov zoo dua qhov thickening nyhuv ntawm mortar, tab sis nws tsis yog proportional rau kev sib raug zoo.Qhov siab dua qhov viscosity, qhov viscous ntau dua cov mortar ntub yuav, ob qho tib si rau kev tsim kho, kev ua haujlwm ntawm cov nplaum nplaum nplaum thiab siab adhesion rau lub substrate.Tab sis nws tsis muaj txiaj ntsig los ua kom cov txheej txheem muaj zog ntawm cov mortar ntub nws tus kheej.Ob qho tib si kev tsim kho, kev ua tau zoo rau kev ua haujlwm tiv thaiv sagging.Hauv qhov sib piv, qee qhov hloov kho hypromellose nrog qis mus rau nruab nrab viscosity tau pom qhov ua tau zoo hauv kev txhim kho lub zog ntawm cov khoom ntub dej.Qhov siab dua cov ntsiab lus ntawm cellulose ether nyob rau hauv mortar, qhov zoo dua cov khoom tuav dej, qhov siab dua qhov viscosity thiab cov khoom tuav dej zoo dua.Fineness kuj yog ib qho tseem ceeb qhia txog kev ua tau zoo rau hypromellose.Qhov zoo ntawm hypromellose kuj muaj qee yam cuam tshuam rau nws lub peev xwm tuav dej.Feem ntau, rau hypromellose nrog tib viscosity tab sis sib txawv fineness, nyob rau hauv tib qhov sib ntxiv, qhov finer lub fineness, qhov zoo dua cov dej tuav nyhuv.
Hauv cov khib nyiab ntub dej, qhov sib ntxiv ntawm cellulose ether HPMC yog qhov tsawg heev, tab sis nws tuaj yeem txhim kho kev tsim kho ntawm cov khoom ntub dej sib xyaw.Kev xaiv zoo ntawm hypromellose muaj txiaj ntsig zoo rau kev ua haujlwm ntawm cov tshuaj khib nyiab ntub dej.
Post lub sij hawm: Lub Xya hli ntuj-27-2023