Hauv cov mortar sib xyaw ua tiav, qhov ntxiv ntawm cellulose ether yog qhov tsawg heev, tab sis nws tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov mortar ntub, uas yog ib qho khoom siv tseem ceeb uas cuam tshuam rau kev ua tau zoo ntawm mortar. Lub luag haujlwm tseem ceeb ntawm HPMC hauv mortar feem ntau yog nyob rau hauv peb yam, ib qho yog lub peev xwm khaws dej zoo heev, qhov thib ob yog qhov cuam tshuam rau kev sib xws ntawm mortar, thiab qhov thib peb yog kev sib cuam tshuam nrog cement.
1. Qhov viscosity ntawm cellulose ether ntau dua, qhov zoo dua qhov kev ua tau zoo ntawm kev khaws dej.
2. Qhov ntau dua ntawm cov cellulose ether ntxiv rau hauv mortar, qhov zoo dua qhov kev ua tau zoo ntawm kev khaws dej.
3. Rau qhov loj me ntawm cov khoom me me, qhov me me ntawm cov khoom me me, qhov zoo dua qhov khaws cia dej.
4. Qhov kev khaws cia dej ntawm methyl cellulose ether txo qis nrog rau qhov nce ntawm qhov kub.
Qhov ua kom tuab ntawm hydroxypropyl methyl cellulose ua cov khoom tuab muaj feem cuam tshuam nrog qhov loj me ntawm cov khoom me me, viscosity thiab kev hloov pauv ntawm hydroxypropyl methyl cellulose. Feem ntau hais lus, qhov siab dua qhov viscosity ntawm cellulose ether, qhov me dua qhov loj me ntawm cov khoom me me, qhov pom tseeb dua qhov thickening effect.
Lub luag haujlwm thib peb ntawm cellulose ethers yog kom qeeb cov txheej txheem hydration ntawm cov cement. Cellulose ethers muab ntau yam khoom zoo rau mortar thiab tseem txo qhov tso tawm cua sov thaum ntxov ntawm cov cement thiab qeeb cov txheej txheem hydration ntawm cement. Qhov siab dua ntawm cov cellulose ether hauv cov khoom siv gel, qhov pom tseeb ntau dua ntawm cov nyhuv ntawm kev ncua hydration. Cellulose ethers tsis yog tsuas yog qeeb qhov chaw teeb tsa, tab sis kuj qeeb cov txheej txheem hardening ntawm cov cement mortar systems. Nrog rau kev nce ntawm HPMC dosing, lub sijhawm teeb tsa ntawm mortar nce ntxiv.
Hauv kev xaus lus, hauv cov tshuaj mortar sib xyaw ua ke, HPMC ua lub luag haujlwm ntawm kev khaws dej, ua kom tuab, ncua lub zog hydration ntawm cement thiab txhim kho kev ua haujlwm ntawm kev tsim kho. Lub peev xwm khaws dej zoo ua rau cov cement hydration tiav dua, uas tuaj yeem txhim kho qhov lo ntawm cov tshuaj mortar ntub thiab ua kom lub zog sib txuas ntawm cov tshuaj mortar. Yog li ntawd, HPMC tau siv dav ua cov khoom ntxiv tseem ceeb hauv cov tshuaj mortar sib xyaw ua ke.
Lub sijhawm tshaj tawm: Lub Ib Hlis-20-2022