Yuav kom piav qhia meej txog yuav ua li cas Hydroxypropyl Methylcellulose (HPMC) txhim kho lub twj tso kua mis ntawm cov khoom siv hauv tsev, peb yuav tsum delve rau hauv nws cov khoom, kev siv, thiab kev sib cuam tshuam hauv kev tsim vaj tse. Lub ntsiab lus no suav nrog ntau yam, los ntawm tus cwj pwm rheological ntawm cov ntaub ntawv mus rau qhov cuam tshuam rau kev tsim kho.
1. Nkag siab txog HPMC:
HPMC yog ntau yam polymer muab tau los ntawm cellulose. Nws cov qauv tshuaj tso cai rau nws cuam tshuam nrog dej, tsim cov gel zoo li matrix thaum yaj. Cov cuab yeej tshwj xeeb no ua rau nws muaj txiaj ntsig hauv ntau yam kev lag luam, suav nrog kev tsim kho, qhov twg nws ua haujlwm tseem ceeb hauv ntau cov khoom siv hauv tsev.
2. Lub luag haujlwm hauv kev tsim khoom sib xyaw:
Hauv kev tsim kho, HPMC feem ntau yog siv los ua cov thickening thiab dej-retention agent hauv cement-based mortars, renders, thiab plasters. Nws txhim kho kev ua haujlwm, adhesion, thiab sib xws ntawm cov ntaub ntawv no. Thaum ntxiv rau qhov sib tov, HPMC tsim ib zaj duab xis nyob ib ncig ntawm cov cement, muab lubrication thiab tiv thaiv dej los ntawm evaporation.
3. Pumpability Enhancement:
Pumpability yog hais txog qhov yooj yim uas cov khoom tuaj yeem thauj tau los ntawm cov kav dej thiab cov kav dej siv lub twj tso kua mis. Hauv kev tsim kho, kev siv lub tshuab nqus dej yog qhov tseem ceeb rau kev xa cov khoom zoo xws li pob zeb, mortar, thiab grout mus rau qhov chaw xav tau, tshwj xeeb tshaj yog nyob rau hauv cov tsev siab lossis cov haujlwm uas muaj kev txwv tsawg.
4.HPMC txhim kho cov twj tso kua mis ntau txoj hauv kev:
Kev tuav dej: HPMC lub peev xwm khaws cov dej hauv qhov sib tov tiv thaiv kom qhuav ntxov ntxov, ua kom cov khoom tseem ntws tawm thaum lub tshuab nqus dej.
Thickening Effect: Los ntawm kev ua kom cov viscosity ntawm qhov sib tov, HPMC pab tswj tus nqi ntws, txo qhov kev pheej hmoo ntawm kev sib cais lossis kev daws teeb meem thaum lub tshuab nqus dej.
Txhim kho Lubrication: Cov zaj duab xis tsim los ntawm HPMC nyob ib ncig ntawm cov cement particles txo kev sib txhuam, tso cai rau cov khoom ntws zoo dua los ntawm cov twj tso kua mis.
Txhim kho Cohesion: HPMC txhawb nqa kev sib koom ua ke zoo dua ntawm cov khoom, txo qhov muaj feem cuam tshuam los yog txhaws hauv lub twj tso kua mis.
Txo los ntshav thiab cais tawm: HPMC pab txhim kho qhov sib xyaw kom ruaj khov, txo qis los ntshav (kev tsiv teb tsaws ntawm cov dej mus rau saum npoo) thiab kev sib cais (kev sib cais ntawm cov khoom), uas tuaj yeem cuam tshuam cov twj tso kua mis.
Optimized Rheology: HPMC hloov kho cov khoom rheological ntawm cov khoom sib tov, ua kom yooj yim rau kev tswj thiab twj tso kua mis, txawm tias thaum muaj kev kub ntxhov lossis los ntawm qhov qhib nqaim.
5. Kev siv tswv yim:
Hauv cov ntsiab lus siv tau, lub twj tso kua mis ntawm cov khoom siv hauv tsev ncaj qha cuam tshuam rau kev tsim kho, nqi zog, thiab lub sijhawm ua haujlwm. Los ntawm kev koom ua ke HPMC rau hauv mortar lossis pob zeb sib xyaw, cov neeg cog lus tuaj yeem:
Ua kom cov khoom tsim tau: Cov twj tso kua mis tso cai rau kev tso cov ntaub ntawv sai dua thiab zoo ib yam, txo qis kev siv tes ua haujlwm thiab ua kom cov txheej txheem tsim kho kom nrawm dua.
Txhim Kho Kev Ua Zoo: Kev faib tawm ntawm cov khoom sib xws, yooj yim los ntawm kev siv tau yooj yim, ua rau muaj ntau hom qauv nrog tsawg dua los yog voids.
Txhim kho kev nyab xeeb: Kev tso dej tawm tshem tawm qhov xav tau ntawm kev tuav ntawm cov khoom hnyav ntawm qhov siab, txo kev raug mob ntawm cov neeg ua haujlwm tsim kho.
Pab kom nkag mus rau qhov chaw nyuaj: Cov khoom siv twj tso kua mis tuaj yeem ncav cuag thaj chaw tsis tuaj yeem nkag mus rau cov kev xa khoom ib txwm muaj, xws li cov chaw kaw lossis qhov chaw siab.
Txo cov khoom pov tseg: Kev tswj xyuas meej txog cov khoom ntws thiab kev tso kawm kom txo tau cov khoom pov tseg thiab cov khoom siv ntau dhau, ua rau kev txuag nqi thiab cov txiaj ntsig ib puag ncig.
HPMC ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub twj tso kua mis ntawm cov khoom siv hauv tsev hauv kev tsim kho. Nws cov khoom tshwj xeeb pab txhawb kev ua haujlwm tau zoo, ntws, thiab sib xws ntawm cov khoom sib xyaw ua ke, ua rau lawv yooj yim rau kev thauj mus los thiab qhov chaw siv cov khoom siv twj. Los ntawm kev ua kom zoo dua cov twj tso kua mis, cov neeg cog lus tuaj yeem ua tiav cov txiaj ntsig zoo dua, kev ua tau zoo, thiab kev nyab xeeb hauv lawv cov haujlwm tsim kho, thaum kawg ua rau cov txiaj ntsig zoo dua rau cov neeg tsim khoom thiab cov neeg siv kawg.
Post lub sij hawm: May-15-2024