Cellulose ether yog qhov tseem ceeb ntawm cov khoom siv ntxiv, xws li cov khoom lag luam hauv tsev, thiab cov khoom siv ntawm cov khoom siv hauv tsev, thiab cov dej khov kho, ruaj khov, dej tsis kam.
1. Txhim Kho Cov Dej Ua Haujlwm
Dej khaws cia yog ib qho ntawm cov khoom tseem ceeb ntawm cov khoom siv tsev, tshwj xeeb yog xas thiab cement, thiab muaj feem xyuam kev txhim kho lub zog, ua kom muaj txiaj ntsig thiab ruaj khov ntawm cov khoom. Cellulose ether muaj cov dej muaj peev xwm ntau thiab tuaj yeem tsim cov dej-khaws zaj duab cug lossis cement kom txo qis dej poob. Tus xeeb ceem no ua si lub luag haujlwm tseem ceeb tshwj xeeb tshaj yog nyob hauv ib puag ncig qhuav lossis dej kom hnyav-nqus tau kev tsim kho. Nws zoo tiv thaiv dej los ntawm kev hloov kho sai sai lossis ua kom cov txheej txheem hydration, thaum kawg ua cov khoom tawv tawv kom muaj zog thiab denser. Cov.
Cov qauv molecular ntawm cellulose ether muaj ntau cov pab pawg hydroxylic hydroxyl pawg los ntawm cov lwg dej los ntawm hydrogen bonds. Qhov kev ua haujlwm hauv cov dej no tsis yog txhim kho cov kev ua haujlwm thaum tsim kho, tab sis kuj tseem txuas lub sijhawm qhib thiab txhim kho cov nplaum ntawm cov khoom. Nyob rau tib lub sijhawm, cov dej khov kho dej rov qab pab txo qhov tshwm sim ntawm cov nrib pleb, tshwj xeeb tshaj yog nyob rau hauv thaum ntxov tawv nqaij tawv, ua tau zoo inhibited beating tshwm sim los ntawm qhuav shrinkage.
2. Txhim kho kev tsim kho kev tsim kho
Cellulose hais tau txhim kho cov khoom tsim kho ntawm cov ntaub ntawv tsim tsev, xws li fluentity, dej tsis kam thiab lub luag haujlwm tiv thaiv. Rau cov cai ua kom cov txiv ntoo-raws li thiab cov khoom siv uas muaj kev pab cuam cellulose tuaj yeem nce viscosity ntawm sleery, ua rau nws yooj yim rau kev thov. Nyob rau tib lub sijhawm, cellulose ether kuj tuaj yeem ua kom cov slurry muaj qhov zoo dua thixotropy, thiab ntws tau yooj yim thaum shearing quab yuam yog thov. Cov yeeb yam no ua rau nws yooj yim dua rau cov neeg ua haujlwm kom ua scraping thiab smearing ua haujlwm, thiab txo cov khoom poob thiab sagging ntawm cov ntaub ntawv.
Lub xub ntiag ntawm cov cellulose cov neeg ua kom muaj cov khoom siv qhib ntev dua. Qhov no txhais tau tias thaum lub sij hawm tsim kho, slurry yuav tsis poob dej nrawm thiab tuaj yeem tswj kev ua haujlwm zoo. Cov neeg tsim kho muaj sijhawm txaus los hloov kho thiab kho kom haum. Tshwj xeeb tshaj yog thaum tsim tau thaj chaw loj, nws tuaj yeem txhim kho kev ua haujlwm zoo thiab cov khoom siv sib xyaw.
3. Txhim kho kev tawg tsis taus thiab kav ntev
Cov kab nrib pleb hauv tsev yog ib qho tseem ceeb ntawm kev cuam tshuam rau lawv cov durability thiab zoo nkauj. Cellulose muaj kev hais ua neeg tuaj yeem txhim kho cov kab cug tsis kam. Ntawm ib sab tes, qhov no vim tias cellulose ether txhim kho cov khoom siv thiab zam thaum ntxov evaporation dej thiab kom qhuav shrinkage. Ntawm qhov tod tes, cellulose ether txhim kho lub zog uas muaj zog, yog li dispersing cov khoom siv, muab cov kev ntxhov siab zoo nkauj, thiab txo lub caij nyoog ntawm cov kab nrib pleb.
Cellulose hais tau hais tias lub durability kuj tseem nyob rau hauv cov lus cog tseg ntawm kev tiv thaiv kom khov-thaw mus ces, carbonancation thiab dej yaig. Vim tias cellulose ether txhim kho ntawm cov khoom siv, kev nkag mus rau cov dej noo thiab lwm yam khoom muaj kev sib raug zoo, txuas ntxiv cov kev pabcuam lub neej ntawm cov khoom. Hauv cov chaw dej txias, muaj cov cellulose ether tuaj yeem txo cov nkag ntawm cov khoom puas tsuaj los ntawm khov-thaw mus.
4. Txhim kho cov nplaum ntawm cov ntaub ntawv
Cellulose hais tias kev hais ua tau kuj tseem tuaj yeem txhim kho cov khoom sib khi ua hauv tsev, tshwj xeeb tshaj yog cov ntaub ntawv nrog cov ntaub nplaum thiab cov plastering mortars. Los ntawm kev ntxiv cov cellulose ether, cohesion thiab nplaum nplaum sab nraud ntawm cov khoom tau txhim kho. Qhov no tsis tuaj yeem ua rau txhim kho txoj kev sib raug zoo ntawm cov khoom thiab cov khoom siv sib txawv (xws li cov pob zeb sib luag thiab pob zeb muaj zog thiab ruaj khov.
Qhov kev sib ntxiv ntawm cellulose ether yuav pab daws cov khoom siv daws teeb meem. Thaum lub sij hawm tsim qauv, cellulose ether tuaj yeem txhim kho kev sib cais thiab cov particle cov khoom sib cais, yog li ua kom muaj kev sib cais ntau dua, yog li ua kom muaj kev ua tiav tag nrho thiab kev ua tau zoo ntawm cov khoom siv.
5. Txhim kho cov khoom siv los tiv thaiv cov ntaub ntawv
Kev ua haujlwm los tiv thaiv kev tiv thaiv yog qhov tshwj xeeb tshaj yog rau qee cov ntaub ntawv siv rau kev siv tshuaj nplaum, thiab ua kom cov nplaum pleev kom zoo thiab ua kom zoo dua qub thiab ua kom zoo adability thiab cov duab ruaj khov. Los ntawm kev kho cov viscosity thiab rheological cov yam ntxwv ntawm slurry, cellulose ether tiv thaiv lub zog los ntawm kev sib khib tom qab scraping, ua kom zoo dua qub thiab zoo nkauj.
6. Txhim Kho Cov Khoom Siv Flow thiab Tsis Muaj Peev Xwm
Hauv cov ntawv thov xws li kev ua raws li kev ua haujlwm ntawm tus kheej thiab cov khoom siv tsis muaj zog, cov neeg muaj kev pab cuam cellulose tuaj yeem txhim kho cov kev ntws thiab tsis muaj peev xwm ua kom tsis txhob muaj cov dej ntws. Cov khoom siv ntawm tus kheej txoj kev xav tau cov khoom ntws zoo ether tuaj yeem ua kom lub viscosity muaj kev ua kom zoo, txo qhov tshwm sim ntawm los ntshav thiab cais. Qhov yeeb yam no tseem ua rau cov khoom siv tsawg dua rau cov khoom siv nqus thaum lub sijhawm ua haujlwm, txhim kho kev tsim kho, kev tsim kho loj lossis ntev ntev.
Raws li kev ua haujlwm tseem ceeb ntxiv, cellulose ua yeeb yam yog lub luag haujlwm tseem ceeb hauv nws cov qauv molecular thiab cov yam ntxwv ua tau zoo. Los ntawm kev txhim kho cov dej cia, txhim kho kev tsim kho, kom txhim kho cov captions, detabulose cov kev daws teeb meem rau kev txhim kho cov ntaub ntawv hauv tsev niaj hnub no. Nrog rau kev txhim kho txuas ntxiv ntawm cov khoom ua tau zoo hauv kev tsim kho, daim ntawv thov kev cia siab ntawm cellulose yuav dav dav.
Lub Sijhawm Post: Feb-17-2025