1. Kev Taw Qhia Txog Hydroxyethyl methylcellulose
Hydroxyethyl Methyl Cellulose (HEMC)yog ib qho cellulose ether uas tsis yog ionic uas yaj tau hauv dej uas tsim los ntawm cov tshuaj lom neeg xws li alkalinization thiab etherification ntawm cov cellulose ntuj. Nws muaj cov khoom zoo heev uas ua rau tuab, khaws dej, tsim zaj duab xis, lubrication thiab kev sib txuas thiab siv dav hauv cov ntaub ntawv tsim kho, tshuaj pleev xim, tshuaj, khoom noj thiab lwm yam teb. Hauv kev tsim kho, tshwj xeeb tshaj yog hauv cov hmoov qhuav thiab hmoov putty, HEMC ua lub luag haujlwm tseem ceeb.
2. Lub luag haujlwm ntawm kev txhim kho kev ua haujlwm
Txhim kho kev ua tau zoo ntawm kev tsim kho
Ntawm cov ntaub ntawv siv hauv tsev, HEMC muaj cov khoom ua kom tuab zoo heev thiab tuaj yeem txhim kho qhov thixotropy thiab sag tsis kam ntawm cov ntaub ntawv. Qhov no ua rau kev tsim kho yooj yim dua. Tshwj xeeb tshaj yog thaum thov rau ntawm cov nto ntsug, cov ntaub ntawv tsis yooj yim rau sag, ua rau nws yooj yim dua rau cov neeg teb xov tooj los tsim cov txheej txheem sib xws thiab txhim kho kev ua haujlwm ntawm kev tsim kho.
Cov khoom no yuav nyob tau ntev tom qab raug txheej los yog do. Qhov no yuav ua rau cov neeg ua haujlwm tsim kho muaj sijhawm ntau dua los kho thiab kho thiab ua kom zoo dua qub.
3. Lub luag haujlwm ntawm kev txhim kho kev ua tau zoo
Cov khoom siv khaws dej zoo heev
Ib qho ntawm HEMC cov yam ntxwv tseem ceeb tshaj plaws yog nws qhov khaws dej zoo heev. Hauv cov cement-based lossis gypsum-based mortars, HEMC tuaj yeem txo qhov dej poob thiab xyuas kom meej tias cov cement lossis gypsum muaj dej txaus thaum lub sijhawm hydration reaction. Qhov no tsis yog tsuas yog txhim kho lub zog thiab kev sib txuas ntawm cov khoom siv, tab sis kuj txo qhov kev pheej hmoo ntawm kev tawg thiab hollowing.
Txhim kho kev sib txuas
Vim tias HEMC muaj cov yam ntxwv zoo ntawm kev tsim cov zaj duab xis, nws tuaj yeem tsim cov zaj duab xis sib xws ntawm qhov chaw tsim kho, yog li ua kom muaj kev sib txuas ntawm cov khoom siv thiab cov khoom siv hauv qab. Cov yam ntxwv no tseem ceeb heev rau cov ntawv thov xws li cov nplaum pobzeb thiab cov putties, qhov twg nws tuaj yeem txhim kho kev ruaj khov thiab kev ruaj khov.
Txhim kho kev tiv thaiv khov-thaw
Hauv thaj chaw txias heev, qhov kev tiv thaiv khov-thaw ntawm cov khoom siv yog qhov tseem ceeb heev. HEMC txhim kho qhov kev tiv thaiv huab cua ntawm cov khoom siv los ntawm kev ua kom zoo dua qhov kev faib tawm ntawm cov dej noo hauv cov khoom siv thiab txo qhov kev hloov pauv ntawm qhov ntim uas tshwm sim los ntawm kev khov thiab yaj ntawm dej thaum lub sijhawm khov-thaw.
4. Cov xwm txheej ib txwm muaj nyob rau hauv kev siv ua haujlwm
cov av nplaum qhuav
Hauv cov mortar qhuav, HEMC tsis yog tsuas yog txhim kho qhov kev tuav dej thiab kev ua haujlwm ntawm cov mortar, tab sis kuj ua kom zoo dua qhov kev ua haujlwm ntawm cov khoom siv, ua rau cov mortar yooj yim dua rau kev nthuav dav thiab cov duab thaum lub sijhawm tsim kho.
Cov kua nplaum pobzeb
HEMC tuaj yeem txhim kho lub zog sib txuas ntawm cov colloid hauv cov nplais pobzeb ceramic, xyuas kom muaj kev sib txuas ruaj khov ntawm cov pobzeb ceramic thiab cov khoom siv, thiab txo cov khoom siv thaum lub sijhawm tsim kho.
Hmoov putty
Ntawm cov hmoov putty, HEMC tuaj yeem txhim kho qhov du ntawm qhov chaw, txhim kho qhov tsis kam dej thiab qhov tawg ntawm cov txheej, thiab ua rau cov txheej putty ua haujlwm zoo dua hauv kev tsim kho tom ntej (xws li cov xim latex).
Hydroxyethyl methylcellulose tau dhau los ua ib qho khoom siv tseem ceeb thiab tseem ceeb hauv cov ntaub ntawv tsim kho niaj hnub vim nws cov khoom zoo heev uas ua rau tuab, khaws dej, lubrication thiab lwm yam khoom. Nws tsis tsuas yog txhim kho qhov ua tau zoo ntawm cov ntaub ntawv, tab sis kuj txhim kho kev ua tau zoo thiab kev ruaj khov ntawm cov khoom tiav, coj kev yooj yim thiab cov txiaj ntsig zoo rau cov neeg ua haujlwm tsim kho thiab cov neeg siv. Nrog rau kev nce qib tas mus li ntawm thev naus laus zis, cov teb thov thiab cov teebmeem ntawm HEMC yuav nthuav dav ntxiv, muab kev pab ntau dua rau kev txhim kho kev lag luam tsim kho.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-11-2024