1. Taw qhia txog hydroxyethyl methylcellulose
Hydroxyethyl Methyl Cellulose (HEMC)yog cov dej tsis-ionic-soluble cellulose ether uas ua los ntawm cov tshuaj lom neeg xws li alkalinization thiab etherification ntawm natural cellulose. Nws muaj cov thickening zoo heev, dej tuav, film-forming, lubrication thiab bonding zog thiab yog dav siv nyob rau hauv lub tsev cov ntaub ntawv, coatings, tshuaj, khoom noj khoom haus thiab lwm yam teb. Hauv kev tsim kho, tshwj xeeb tshaj yog nyob rau hauv mortar qhuav thiab putty hmoov, HEMC plays lub luag haujlwm tseem ceeb.
2. Lub luag haujlwm ntawm kev txhim kho kev ua haujlwm
Txhim kho kev tsim kho kev ua haujlwm
Ntawm cov khoom siv hauv tsev, HEMC muaj cov khoom tuab zoo heev thiab tuaj yeem txhim kho thixotropy thiab sag tsis kam ntawm cov ntaub ntawv. Qhov no feature ua rau kev tsim kho yooj yim dua. Tshwj xeeb tshaj yog thaum thov rau ntawm qhov chaw ntsug, cov khoom siv tsis yooj yim rau sag, ua rau nws yooj yim dua rau cov neeg ua haujlwm tsim cov txheej txheej thiab txhim kho kev tsim kho.
rial tuaj yeem nyob twj ywm haum rau lub sijhawm ntev tom qab tau coated lossis nplawm. Qhov no yuav cov neeg ua haujlwm tsim kho ntau lub sijhawm rau kev hloov kho thiab kho thiab txhim kho kev tsim kho kom zoo.
3. Lub luag haujlwm ntawm kev txhim kho kev ua haujlwm
Cov khoom zoo khaws cia dej zoo
Ib qho ntawm HEMC cov khoom tseem ceeb tshaj plaws yog nws cov dej tuav tau zoo. Hauv cov cement-based lossis gypsum-raws li mortars, HEMC tuaj yeem txo cov dej tsis zoo thiab xyuas kom meej tias cov cement lossis gypsum muaj cov dej noo txaus thaum lub sij hawm hydration. Qhov no tsis tsuas yog txhim kho lub zog thiab kev sib txuas ntawm cov khoom, tab sis kuj txo qhov kev pheej hmoo ntawm cov kab nrib pleb thiab hollowing.
Txhim kho adhesion
Txij li HEMC muaj cov cuab yeej ua yeeb yaj kiab zoo, nws tuaj yeem tsim cov yeeb yaj kiab tsis sib xws ntawm qhov chaw tsim kho, yog li txhim kho qhov adhesion ntawm cov khoom thiab cov substrate. Cov cuab yeej no tseem ceeb tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov xws li pobzeb nplaum thiab putties, qhov chaw uas nws tuaj yeem txhim kho durability thiab stability.
Txhim kho khov-thaw tsis kam
Hauv cov cheeb tsam txias txias, qhov khov-thaw tsis kam ntawm cov ntaub ntawv tseem ceeb tshwj xeeb. HEMC txhim kho huab cua tsis kam ntawm cov khoom siv los ntawm kev ua kom zoo dua cov dej noo hauv cov khoom siv thiab txo qhov kev hloov pauv los ntawm qhov khov thiab yaj ntawm cov dej thaum lub sij hawm khov-thaw.
4. Cov xwm txheej hauv kev siv tswv yim
qhuav mortar
Hauv mortar qhuav, HEMC tsis tsuas yog txhim kho cov dej tuav thiab kev ua haujlwm ntawm cov mortar, tab sis kuj ua kom cov khoom ua haujlwm zoo dua qub, ua rau cov mortar yooj yim dua rau kev sib kis thiab cov duab thaum lub sij hawm tsim kho.
Cov nplaum nplaum
HEMC tuaj yeem txhim kho cov colloid lub zog sib txuas hauv cov nplais pobzeb nplaum, ua kom muaj kev sib txuas ruaj khov ntawm cov vuas luaj ceramic thiab substrates, thiab txo cov khoom slippage thaum siv.
Putty hmoov
Ntawm cov hmoov putty, HEMC tuaj yeem txhim kho qhov smoothness, txhim kho cov dej tsis kam thiab tawg tsis kam ntawm txheej, thiab ua kom cov txheej txheej putty ua tau zoo dua hauv kev tsim kho tom ntej (xws li cov xim latex).
Hydroxyethyl methylcellulose tau dhau los ua qhov tseem ceeb thiab tseem ceeb ntxiv hauv cov khoom siv niaj hnub no vim nws cov thickening zoo heev, dej tuav, lubrication thiab lwm yam khoom. Nws tsis tsuas yog txhim kho cov txheej txheem ntawm cov ntaub ntawv, tab sis kuj txhim kho kev ua tau zoo thiab ua haujlwm ntev ntawm cov khoom tiav, nqa kev yooj yim thiab txiaj ntsig zoo rau cov neeg ua haujlwm tsim kho thiab cov neeg siv khoom. Nrog rau kev nce qib ntawm kev siv thev naus laus zis tsis tu ncua, daim ntawv thov kev lag luam thiab cov txiaj ntsig ntawm HEMC yuav nthuav dav ntxiv, muab kev pab ntau ntxiv rau kev tsim kho kev lag luam.
Post lub sij hawm: Nov-11-2024