Kev ua haujlwm yog ib qho khoom tseem ceeb nyob hauv Mortars thiab Plasters, suav nrog kev siv daim ntawv thov, ua tiav zoo, thiab txhua yam ua tau zoo. Ua tiav qhov kev ua haujlwm zoo rau kev ua haujlwm yog qhov tseem ceeb rau kev ua kom muaj kev tsim kho cov kev tsim kho thiab cov txiaj ntsig txaus siab. HydroxyPropyyl methylcellueculose (HPMC) yog siv dav siv ntxiv rau hauv cov khoom tsim kho vim nws muaj peev xwm txhim kho kev ua haujlwm.
1.Teem HPMC:
HPMC yog lub cellulose ether tau los ntawm cov cellulose ntuj. Nws yog cov hloov kho ntawm etherification los tiv thaiv cov khoom tshwj xeeb tsim nyog rau ntau yam kev siv, suav nrog kev tsim kho. HPMC yog tus cwj pwm los ntawm nws lub peev xwm dej siab ua kom muaj peev xwm, muaj peev xwm ua yeeb yaj kiab, ua yeeb yaj kiab ua yeeb yaj kiab, thiab ua yeeb yam zoo tshaj plaws hauv cov tshuab dej. Cov khoom no ua rau nws yog ib qho zoo tshaj plaws ntxiv rau kev txhim kho kev ua yeeb yam ntawm mortars thiab plaster.
2.Mhanghisms ntawm kev ua haujlwm ua haujlwm:
Qhov kev sib txuas ntawm HPMC mus rau Mortars thiab Plasters cuam tshuam lawv cov khoom sib dhos, feem ntau los ntawm kev siv dej kom tsawg dua thiab cov teebmeem tuab. HPMC Molecules tsim zaj duab xis tiv thaiv ib ncig ntawm cov pajas, tiv thaiv kom tsis txhob muaj dej nrawm los ntawm evaporation sai. Qhov no cov txheej txheem hydronged txhim kho kev ua haujlwm ntawm cov sib xyaw, pub rau kev tuav yooj yim dua, kis, thiab xov.
HPMC ua raws li cov tuab tuab, nce viscosity ntawm cov tshuaj khib lossis plaster. Qhov Vircosity Transfulation pab tswj sagging lossis slumping, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov ntsug, yog li kev txhim kho qhov ruaj ntseg thiab muaj txiaj ntsig ntawm cov khoom siv thaum lub sijhawm ntawv thov.
3.Benefits ntawm HPMC hauv Mortars thiab plasters:
Txhim kho cov haujlwm ua haujlwm: HPMC txhim kho kev ua haujlwm ntawm mortars thiab plasters los ntawm kev saib xyuas cov dej viscosity txaus, ua tiav cov ntawv thov smoother.
Txo cov kev thov dej: Cov khoom siv dej hauv HPMC txo qhov kev xav tau rau cov dej sib tov ntxiv, ua kom txhim kho cohesion yam tsis muaj kev txi ua kom muaj zog lossis ua kom tsis tu ncua.
Txhim kho Adhesion: cov yeeb yaj kiab ua yeeb yaj kiab ntawm HPMC txhawb cov adhesion zoo dua ntawm cov txheej txheem thiab cov tshuaj khib nyiab thiab txo cov kev pheej hmoo ntawm kev cuam tshuam.
Tawg kuj: los ntawm kev ua haujlwm ua haujlwm ua haujlwm thiab txo cov dej xav tau, HPMC pab txo cov hmoov nplej thiab cov plasters, txhim kho lub sijhawm ntev thiab kav ntev.
Versatility: HPMC tuaj yeem siv ntau qhov ntawm cov neeg nplua nuj thiab plasters, suav nrog cov qauv ua yeeb yam, ua rau nws muaj ntau yam ntxiv rau kev siv kho tshiab.
4.PRACTICAL APPLITS:
HPMC feem ntau koom ua kab tshuaj khib thiab plaster formulations thoob plaws thaj chaw, ua lag luam, thiab kev ua haujlwm siv. Nws koob tshuaj feem ntau li ntau los ntawm 0.1% rau 0.5% los ntawm qhov hnyav ntawm cov xis nyob, txawm hais tias cov kev xav tau raws li cov khoom xav tau thiab ib puag ncig.
Hauv kev siv sab nrauv xws li rendering lossis stucco, HPMC pab txhim kho huab cua tiv thaiv thiab siv cov dej ua haujlwm thiab txo cov dej ua haujlwm. Hauv cov ntawv thov sab hauv xws li tiling lossis skim txheej, nws ua kom cov txheej txheem smoother thiab zoo dua cov txheej txheem kev teeb tsa thiab txhim kho kev ua kom zoo nkauj.
HydroxyPropyyl methylcellose (HPMC) plays Lub Luag Haujlwm Tseem Ceeb hauv kev txhim kho kev ua haujlwm xws li kev txhim kho ntau, txo cov dej kom tsawg, thiab tawg tsis taus. Los ntawm kev nkag siab ntawm cov txheej txheem tom qab nws kev ua tau zoo thiab kev siv cov kws tshaj lij thiab kev tsim kho HPMC kom ua tau zoo HPMC kom ua tau zoo thiab ua tau zoo ntawm lawv cov dej num. Raws li kev tsim kho kev tsim kho txuas ntxiv mus hloov zuj zus, qhov tseem ceeb ntawm cov quav ntxiv zoo li HPMC hauv kev ua tiav kev ua haujlwm zoo siab tshaj thiab kev ua tau zoo yuav tseem ceeb.
Lub Sijhawm Post: Feb-18-2025