HydroxyPropyyl methylcellulose, hu ua li: HPMC lossis MHPC. Cov tsos yog dawb lossis tawv nqaij dawb; Kev siv lub ntsiab yog ua qhov tsis sib xws hauv kev tsim cov polyvinyl chloride, thiab nws yog lub ntsiab uxiliary tus neeg sawv cev rau kev ncua ntawm pvc los ntawm kev ncua qib polymerization. Hauv kev tsim kho cov txheej txheem ntawm kev tsim kho kev tsim kho, nws yog tsuas yog siv rau hauv kev tsim kho mechanized xws li phab ntsa tsev, plastering, caulking, thiab lwm yam; Tshwj xeeb tshaj yog nyob rau hauv kev ua kom zoo nkauj, nws yog siv los muab tshuaj txhuam cov vuas luaj, marble, thiab yas decorations. Nws muaj lub zog ua kom muaj zog siab thiab tuaj yeem txo cov cement. Cov. Nws yog siv los ua cov tuab hauv kev lag luam pleev xim, uas tuaj yeem ua rau txheej txheej thiab muag heev, tiv thaiv hmoov kom tshem tawm, thiab lwm yam.
Nyob rau hauv centent cortar thiab gypsum-raws li slurry, hydroxypropylulose cetting thiab thickenively, uas muaj peev xwm txhim kho txoj hlua khi thiab sag tiv thaiv ntawm cov slurry.
Yam khoom xws li cua kub, ntsuas kub thiab cua kub yuav cuam tshuam rau cov dej colatilization thiab gypsum-based khoom. Yog li ntawd, nyob rau lub caij sib txawv, muaj qee qhov sib txawv ntawm cov dej ua kom ruaj khov ntawm cov khoom lag luam nrog tib medroxypropylulose ntxiv.
Hauv kev tsim kho tshwj xeeb, cov dej khaws cov nyhuv khaws cia ntawm cov slurry tuaj yeem hloov kho los ntawm nce lossis txo tus HPMC ntxiv. Cov dej tuav tseg ntawm methyl cellulose hauv qab cov kev mob siab yog qhov ntsuas tau qhov ua tau zoo ntawm methyl cellulose ether.
Zoo heev hydroxypropy methylulose cov khoom lag luam tuaj yeem daws cov teeb meem ntawm dej rov qab nyob rau hauv qhov kub siab. Hauv cov caij nyoog kub, tshwj xeeb tshaj yog nyob rau hauv cov chaw kub thiab qhuav thiab nyias txheej HPMC yuav tsum txhim kho cov dej khaws cia ntawm cov slurry.
High-zoo HPMC muaj kev sib txig zoo heev. Nws cov methoxy thiab hydroxyprropoxy pawg yog tusyees faib raws lub peev xwm molecular, uas tuaj yeem txhim kho lub peev xwm ntawm cov dej hydroxyl thiab itherchen kom tsim cov dej hydrodiat. , yog li ntawd cov dej dawb los ua ib txoj dej ntws, yog li kom tswj tau cov dej evapontively los ntawm huab cua siab, thiab ua tiav dej siab.
Dej yuav tsum muaj rau kev co kom dej kom teeb tsa cov khoom noj xis xws li cement thiab gypsum. Qhov tseeb ntawm HPMC tuaj yeem ua kom cov dej noo hauv lub tshuaj khib nyiab ntev ntev kom lub sijhawm muaj peev xwm ua tau txuas ntxiv.
Tus nqi HPMC yuav tsum tau txais cov dej kom txaus nyob ntawm:
1. Qhov nqus tau ntawm lub hauv paus txheej
2. Sib xyaw ntawm cug
3. Cug txheej thickness
4. Dej thov ntawm cug
5. Lub sijhawm teem sijhawm ntawm cov khoom siv tawm
Zoo hydroxypropal methylcellulose tuaj yeem sib xyaw thiab cov khoom ntub dej, thiab cov khoom ntub dej, thiab qhwv txhua qhov chaw ntub dej, thiab qhwv txhua qhov chaw ntub dej, thiab muab cov khoom ntub dej, thiab qhwv txhua yam ntub dej hauv lub sijhawm ntev, thiab cov Cov tshuaj tiv thaiv hydring nrog cov khoom sib xyaw ua ke kom ntseeg tau tias lub zog sib npaug thiab lub zog compressive ntawm cov khoom.
Yog li ntawd, kev tsim kho kub-kub, txhawm rau kom ua tiav cov khoom siv hpmc zoo li, nws yuav tsum muaj cov dej tsis txaus, nws yuav muaj lub zog tsis txaus, txo lub zog, tawg, hollowing, hollowing thiab shedding tshwm sim los ntawm kev ziab ntau dhau. Teeb meem, tab sis kuj tseem nce cov kev tsim kho cov neeg ua haujlwm. Raws li cov tee ntsuas kub, tus nqi ntawm cov dej HPMC ntxiv tuaj yeem txo qis qis, thiab tib cov nyhuv retentent tau ua tiav.
Lub Sijhawm Post: Jan-16-2023