Hydroxypropyl Methylcellulose (HPMC) yog ib qho cellulose ether uas yaj tau hauv dej uas siv dav hauv cov ntaub ntawv siv hauv kev tsim kho, tshwj xeeb tshaj yog cov mortars thiab plastering mortars. HPMC ua ntau yam haujlwm tseem ceeb hauv cov ntawv thov no, suav nrog kev ua kom tuab, khaws dej, sib txuas thiab lubrication. Cov haujlwm no ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm, kev ruaj khov thiab kev ua haujlwm ntawm mortar.
1. Cov nyhuv tuab
HPMC muaj cov nyhuv ua kom tuab thiab tuaj yeem txhim kho qhov sib xws thiab rheology ntawm cov mortar. Tom qab ntxiv HPMC rau hauv cov mortar, cov cement me me thiab lwm yam khoom khov kho tuaj yeem raug ncua thiab tawg sib npaug, yog li zam kev tawg thiab sib cais ntawm cov mortar. Cov nyhuv ua kom tuab ua rau cov mortar yooj yim dua rau kev siv thiab duab thaum lub sijhawm tsim kho, txhim kho kev tsim kho zoo thiab zoo.
2. Cov nyhuv ntawm kev khaws dej
Kev khaws dej yog ib qho tseem ceeb ntawm HPMC hauv kev tsim cov mortars. HPMC muaj peev xwm ua kom noo noo zoo thiab ua kom gelling, thiab tuaj yeem tsim cov qauv ruaj khov ntawm cov dej noo hauv cov mortar kom zoo kaw cov dej noo. Kev khaws dej yog qhov tseem ceeb rau cov txheej txheem tawv ntawm mortar. Cov dej txaus hauv cov mortar tuaj yeem ua kom cov cement muaj dej txaus, yog li ua kom lub zog thiab kev ruaj khov ntawm cov mortar. Tib lub sijhawm, kev khaws dej zoo kuj tseem tuaj yeem tiv thaiv kev ua kom dej sai sai thaum lub sijhawm tsim kho, yog li tiv thaiv kev tawg thiab kev ntsws ntawm cov mortar.
3. Kev sib txuas ua ke
HPMC tuaj yeem txhim kho qhov kev sib txuas ntawm cov mortar, txhim kho qhov kev sib txuas ntawm cov mortar thiab txheej hauv paus, cov ntaub thaiv kev txhawb nqa thiab cov ntaub ntawv kho kom zoo nkauj. Qhov kev sib txuas no tsis yog tsuas yog txhim kho qhov kev tiv thaiv kab nrib pleb ntawm cov mortar, tab sis kuj ua rau muaj kev tiv thaiv huab cua ntawm cov mortar. Tshwj xeeb tshaj yog hauv cov plastering mortar, cov khoom sib txuas zoo tuaj yeem ua kom cov mortar txuas ruaj khov rau ntawm phab ntsa thiab tiv thaiv cov txheej plastering kom tsis txhob poob thiab tev tawm.
4. Cov nyhuv ntawm lubricating
HPMC tuaj yeem tsim cov kua colloidal du hauv cov kua dej, ua rau cov mortar muaj roj zoo heev. Qhov kev ua kom lubrication no ua rau cov mortar du thiab yooj yim rau kev ua haujlwm thaum lub sijhawm tsim kho, txo qhov nyuaj ntawm kev tsim kho thiab kev siv zog. Tib lub sijhawm, qhov roj kuj tseem tuaj yeem ua rau kev siv mortar du thiab sib npaug, txhim kho qhov zoo ntawm kev tsim kho.
5. Txhim kho kev tiv thaiv te
HPMC kuj muaj qhov cuam tshuam zoo rau qhov tsis kam ntawm cov mortar. Hauv qhov kub qis, cov dej noo uas khaws cia rau hauv cov mortar yuav khov, ua rau cov qauv puas tsuaj rau cov mortar. Cov dej khaws cia thiab cov nyhuv tuab ntawm HPMC tuaj yeem txo qhov fluidity ntawm dej mus rau qee qhov thiab qeeb qeeb qhov ceev ntawm dej khov, yog li tiv thaiv cov qauv mortar.
Hydroxypropyl methylcellulose (HPMC) muaj ntau yam tseem ceeb hauv kev tsim kho mortars thiab plastering mortars, suav nrog thickening, water retention, bonding thiab lubrication. Cov haujlwm no tsis yog tsuas yog txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm cov mortar, tab sis kuj txhim kho cov khoom siv lub cev thiab cov khoom siv kho tshuab ntawm cov mortar, ua rau nws ruaj khov thiab tiv taus tawg. Yog li ntawd, HPMC tau siv ntau dua hauv cov ntaub ntawv tsim kho niaj hnub thiab yog ib qho ntawm cov ntaub ntawv tseem ceeb los txhim kho qhov zoo ntawm cov haujlwm tsim kho.
Lub sijhawm tshaj tawm: Lub Yim Hli-01-2024