1.Wet mixed cug: mixed cug yog ib qho kev sib xyaw ua ke, ua ke ntawm cov khoom lag luam tshwj xeeb, thiab siv cov khoom ntub dej ua tiav, thiab siv cov khoom ntub tag rau lub sijhawm.
2.YRroxyPropyyl methyl cellulose yog siv los ua cov dej-khaws cov neeg sawv cev rau cov xis cug thiab retarder rau coll nqus twj. Xws li Gypsum ua cov phau ntawv los txhim kho cov ntawv thov thiab lub sijhawm ua haujlwm ntev dhau los ntawm HPMC tiv thaiv sai sai tom qab ziab, thiab txhim kho lub zog tom qab ua kom tawv. Dej ceev yog ib qho khoom tseem ceeb ntawm hydroxypropyl cellulose hpmc, thiab nws kuj yog kev txhawj xeeb ntawm ntau lub tsev tsim hluav taws xob sib xyaw. Yam cuam tshuam rau cov dej ua kom huv ntawm cov nyhuv ntub-sib xyaw ua ke muaj xws li HPMC ntxiv, lub piscosity ntawm cov hais thiab qhov kub ntawm kev siv ib puag ncig.
3.Qhov kev ua haujlwm tseem ceeb ntawm hydroxypropyl cellulose hpmc nyob rau hauv cov dej sib xyaw ua ke, lwm yam yog qhov sib xyaw ua ke muaj peev xwm thiab qhov thib peb yog kev sib cuam tshuam nrog cov cement. Cov dej khaws cia ntawm cellulose nyob ntawm cov tshuaj khib nyiab ntawm lub hauv paus, cov dej phwj, cov dej phib tawj, thiab lub sijhawm teeb tsa. Qhov siab dua cov pob tshab ntawm hydroxypropyl cellulose, qhov zoo dua cov dej khaws cia.
4.Txhob rau cov dej khaws cia ntawm cov tshuaj khib ntub xws li cellulose engourcosity, ntxiv cov nyiaj, qhov loj me thiab kub. Qhov ntau dua qhov viscosity ntawm cellulose ether, qhov zoo dua cov dej khaws cia. Viscosity yog qhov tseem ceeb parameter ntawm HPMC kev ua tau zoo. Rau tib cov khoom lag luam, cov txiaj ntsig ntawm kev siv cov qauv sib txawv los ntsuas viscosity heev, thiab qee tus txawm muaj ib qho sib txawv. Yog li ntawd, kev sib piv ntawm viscosity yuav tsum tau nqa tawm hauv tib txoj kev xeem, suav nrog kub, ntxaiv, thiab lwm yam, thiab lwm yam
5.Generally Hais, cov viscosity ntau dua, qhov zoo dua cov dej khaws cia. Txawm li cas los xij, qhov siab dua viscosity, lub siab dua molecular hnyav ntawm HPMC thiab qis dua cov solubility ntawm HPMC, uas muaj qhov tsis zoo ntawm lub zog thiab kev tsim kho ntawm lub tshuaj khib. Qhov siab tshaj lub viscosity, qhov pom tseeb dua cov nyhuv tuab ntawm cug tshuaj khib, tab sis nws tsis yog ncaj qha cuam tshuam. Qhov siab tshaj lub viscosity, ntau ntau ntau lub vuag tsuag qhuav, qhov zoo dua kev tsim kho kev ua haujlwm, kev ua tau zoo ntawm scraper thiab ntau dua cov nplaum rau lub substrate. Txawm li cas los xij, cov txheej txheem sib xyaw ntawm lub zog ntub nws tus kheej tsis pab. Ob lub chaw tsim khoom tsis muaj kev pom zoo los tiv thaiv kev tiv thaiv. Hauv kev sib piv, qee qhov nruab nrab thiab tsis muaj viscosity tab sis hloov kho hydroxypropyl cellulose tau ua tau zoo heev hauv kev txhim kho lub zog ntawm cov tshuaj khib nyiab ntub dej.
6.Qhov ntau tus nqi ntawm cellulose ether ntxiv rau HPMC ntub txoj kab sib tov, qhov zoo dua cov dej khaws cia, thiab ntau dua qhov dej rov qab. Fineness tseem yog ib qho tseem ceeb ntsuas ntawm hydroxypropyl methyl cellulose.
7.Qhov finequiness ntawm hydroxypropyl cellulose tseem muaj qee yam cuam tshuam ntawm nws cov dej khaws cia. Feem ntau, rau hydroxypropyl methyl cellulose nrog tib viscosity thiab sib txawv, cov me dua cov txiaj ntsig khaws cia nyob rau tib tus nqi. zoo dua.
8.Qhov sib xyaw ua ke xyaw, ntxiv rau ntawm Cellulose ETETH HEEV, tab sis nws yog lub ntsiab ua tau zoo heev, tab sis nws yog lub ntsiab ntxiv uas feem ntau cuam tshuam rau kev ua yeeb yam ntawm cug. Cov kev xaiv tsim nyog ntawm hydroxypropyl methyl cellulose, kev ua yeeb yam ntawm cov tshuaj khib ntub tau cuam tshuam heev.
Lub Sijhawm Post: Dec-06-2022