Tau ntau pua xyoo, masonry thiab plaster mortars tau siv los tsim cov qauv zoo nkauj thiab ruaj khov. Cov mortars no yog tsim los ntawm kev sib xyaw ntawm cov cement, xuab zeb, dej thiab lwm yam khoom ntxiv. Hydroxypropyl methylcellulose (HPMC) yog ib qho ntxiv.
HPMC, tseem hu ua hypromellose, yog hloov kho cellulose ether muab tau los ntawm ntoo pulp thiab paj rwb fibers. Nws yog cov khoom siv ntau yam siv nyob rau hauv ntau yam kev lag luam, nrog rau kev tsim kho, tshuaj, khoom noj khoom haus thiab kev tu tus kheej. Hauv kev tsim kho, HPMC yog siv los ua cov thickener, binder, dej tuav tus neeg sawv cev thiab rheology hloov kho hauv cov tshuaj mortar.
Lub luag hauj lwm ntawm HPMC nyob rau hauv masonry plastering mortar
1. Kev tswj kom zoo
Qhov sib xws ntawm mortar yog qhov tseem ceeb rau kev siv thiab kev sib txuas. HPMC yog siv los tswj qhov sib xws ntawm masonry thiab plaster mortars. Nws ua raws li lub thickener, tiv thaiv lub mortar los ntawm ua kua los yog tuab, tso cai rau du daim ntawv thov.
2. Kev tuav dej
Dej yog qhov tseem ceeb hauv cov txheej txheem hydration ntawm cov cement, ib qho tseem ceeb ntawm cov masonry thiab plastering mortars. Txawm li cas los xij, dej ntau dhau tuaj yeem ua rau shrinkage thiab tawg. HPMC pab khaws cov dej noo hauv cov mortar, tso cai rau dej kom zoo ntawm cov cement thaum txo cov dej los ntawm evaporation. Qhov no ua rau kev ua haujlwm tau zoo dua qub, ua kom zoo dua adhesion thiab muaj zog ntxiv.
3. Teem sijhawm
Lub sij hawm teeb tsa ntawm lub mortar cuam tshuam rau lub durability thiab adhesion ntawm cov qauv kawg. HPMC tuaj yeem siv los tswj lub sijhawm teeb tsa ntawm masonry thiab plastering mortars. Nws ua raws li ib tug retarder, slows down lub hydration txheej txheem ntawm cement. Qhov no ua rau lub sijhawm ua haujlwm ntev dua thiab txhim kho kev sib raug zoo.
4. Adhesion zog
Lub zog ntawm cov mortars yog qhov tseem ceeb rau kev ua haujlwm ntawm cov masonry thiab plaster. HPMC txhim kho kev sib raug zoo ntawm mortar thiab substrate los ntawm kev muab adhesion zoo dua thiab txhim kho kev ua haujlwm. Qhov no ua rau cov qauv muaj zog thiab ruaj khov dua.
Qhov zoo ntawm HPMC hauv masonry thiab plastering mortars
1. Txhim kho kev ua haujlwm
HPMC pab txhim kho kev ua haujlwm ntawm masonry thiab plastering mortars. Lub thickening thiab dej-retaining zog ntawm HPMC ua rau daim ntawv thov ntawm mortar smoother thiab yooj yim dua. Qhov no ua rau kom tag nrho cov efficiency thiab ceev ntawm kev tsim kho.
2. Txo shrinkage thiab tawg
Shrinkage thiab cracking yog ib qho teeb meem nrog cov tsoos masonry thiab plaster mortars. Cov dej tuav cov khoom ntawm HPMC txo evaporation thiab tiv thaiv shrinkage thiab tawg. Qhov no ua rau muaj kev ruaj khov thiab ntev ntev.
3. Txhim khu kev ruaj khov
Qhov sib ntxiv ntawm HPMC rau masonry thiab plastering mortars txhim khu lub durability ntawm cov qauv zaum kawg. HPMC tau txhim kho daim ntawv cog lus lub zog, kev ua tau zoo thiab kev tuav dej, ua rau muaj zog dua, siv tau ntev dua.
4. Tus nqi siab ua haujlwm
HPMC yog ib qho khoom siv uas muaj txiaj ntsig zoo uas muaj txiaj ntsig ntau hauv kev tsim cov masonry thiab plastering mortar formulations. Nws cov khoom txo qhov kev pheej hmoo ntawm cov teeb meem xws li shrinkage thiab cracking, yog li txo tus nqi txij nkawm thoob plaws hauv lub neej ntawm cov qauv.
nyob rau hauv xaus
HPMC ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm cov masonry thiab plastering mortars. Nws txoj kev tswj xyuas qhov sib xws, kev tuav dej, teeb tsa lub sijhawm tswj thiab cov khoom sib txuas ua ke muab ntau yam txiaj ntsig rau kev tsim kho kev lag luam. Kev siv HPMC ua rau kev ua haujlwm tau zoo dua qub, txo qis qis thiab tawg, txhim kho durability thiab kev tsim kho kom zoo. Kev koom ua ke ntawm HPMC rau hauv masonry thiab renders mortars yog ib kauj ruam zoo rau kev siv tau zoo dua, ruaj khov thiab ruaj khov.
Post lub sij hawm: Oct-08-2023