HydroxyPropylropy Cellulose (HPMC)yog cellulose tseem ceeb ether. Nws yog dav siv nyob rau hauv cement-raws li lub tshuab sib nraus vim nws lub cev nqaij daim tawv thiab tshuaj lom neeg thiab kev txhim kho tseem ceeb hauv kev ua haujlwm hauv tsev. Tshwj xeeb, Kimacell® Tau qhia tau zoo heev hauv kev txhim kho cov kev tawm tsam ntawm cov cement.
Qhov tseem ceeb ntawm kev tawm tsam
Anti-dispersion yog qhov taw qhia tseem ceeb ntawm xis nyob ntawm cov kev sib xyaw ua ke ntawm kev ua ntawm sab nraud rog (xws li cov kev sib tw, cuam tshuam lossis dej scouring). Hauv kev tsim kho tiag tiag, kev tawm tsam zoo tuaj yeem tiv thaiv cov txheej txheem, yog li ua kom muaj kev sib cais thaum lub zog ua kom zoo, lub zog ua kom muaj zog thiab lub zog ntawm cov qauv.
Cov yam ntxwv ntawm hydroxyPropy kasthyl cellulose
HPMC yog dej-soluble polymer nrog cov yam ntxwv tseem ceeb hauv qab no:
Thickening: HPMC tuaj yeem ua kom cov kuab tshuaj aque, ua lub tshuaj khib tau muaj dua los tiv thaiv kev sib cais thiab kev sib cais.
Dej khaws cia: nws cov kev ua tau zoo hauv kev ua haujlwm tau zoo tuaj yeem txo cov dej tshuaj tua hluav taws xob nrog cov kev sib cais los ntawm dej evaporation.
Zaj duab xis-ua cov cuab yeej: HPMC yuav ua ib zaj duab xis yooj yim tom qab lub cug hardens, uas txhim kho nws cov khoom lag luam nto thiab ntxiv nws cov khoom ntiag tug.
Lubricity: txhim kho cov neeg zawv zawg ntawm cov lus hauv cov tshuaj khib, ua rau cov khaub ncaws sib xyaw thiab tiv thaiv kev faib tawm.
Mechanism ntawm HPMC txhawm rau txhim kho cov khoom siv los tiv thaiv kev tawm tsam ntawm cov xis mas cug
Txhim kho viscosity thiab rheological khoom
After adding KimaCell®HPMC to cement mortar, the hydroxypropyl and methyl groups in its molecular structure will form hydrogen bonds with water molecules, thereby increasing the viscosity of the mortar system. Kev sib xyaw siab yuav ua rau muaj kev sib cav sib haum xeeb ntawm cov ceg sab hauv thaum raug teeb meem sab nraud, txhim kho tag nrho cov kev sib xyaw ntawm lub tshuaj khib, thiab txo qhov kev sib xyaw ua ke.
Txhim kho cov dej tuav thiab ncua kev co
HPMC tuaj yeem tsim cov dej sib txawv-khaws cia hauv lub tshuaj khib kom tiv thaiv kom txhob yaj dej sai sai. Cov txiaj ntsig dej-khaws cov txiaj ntsig tsis tsuas pab cov tshuaj tua dej tsuas yog pab ua kom tsis ncaj rau cov dej, tab sis kuj txhim kho cov khoom ntiag tug los tiv thaiv cov khoom.
Cov khaub ncaws sib tawg ntawm cov tshuaj xis thiab sib xyaw ua ke
Lub thickening thiab lubricating cuam tshuam thiab lubricating cuam tshuam cov khoom zoo nyob rau hauv lub tshuaj khib hauv lub tshuaj khib nyiab kom muaj kev sib cais ntau dua, yog li zam kev sib cais los ntawm kev sib cais.
Txhim kho lub shear kuj ntawm cug
HPMC txhim kho cov tshuaj khib rau shear thiab kev co, thiab txo cov kev puas tsuaj ntawm cov quab yuam sab nraud ntawm cov qauv tshuaj cug. Txawm hais tias nyob rau hauv kev sib xyaw, tsheb thauj mus los lossis kev tsim kho, cov khoom sib xyaw ua ke tuaj yeem nyob ruaj khov.
Cov piv txwv thov thiab ua pov thawj
Cov kev tshawb fawb pom tau tias lub viscosity ntawm xis loj tuaj yeem nce ntxiv los ntawm kev ntxiv 0.2%-tus txheeb ze ntawm HPMC, thiab cov khoom siv tawm tsam tau txhim kho. Thaum lub sij hawm tsim qauv, tshuaj khib nyiab muaj Kimacell® tus qauv ua kom muaj kev cuam tshuam ntau dua, txo kev sib cav sib haum xeeb thiab xis mas slurry poob tshwm sim los ntawm kev co.
Vim nws cov tuab heev, dej tuav thiab lubrication cov khoom, hydroxypropylulose tau txhim kho kev txhim kho kom zoo thiab cov txheej txheem ua haujlwm ruaj khov. Nyob rau yav tom ntej kev tshawb fawb, cov qauv molecular thiab ntxiv txoj kev ntawmHPMCtuaj yeem ua kom zoo dua rau kev txhim kho ntxiv nws cov nyhuv ntawm kev ua tau zoo ntawm cov khoom siv Maas-raws. Nyob rau tib lub sijhawm, kev sib xyaw ntawm HPMC nrog lwm cov kev txuas ntxiv kuj tseem tuaj yeem tsim kho lub tsev ua haujlwm zoo nrog kev ua tau zoo dua.
Lub Sijhawm Post: Jan-27-2025