HydroxyPropyyl methylcellose (HPMC), yog feem ntau siv hauv ntau lub teb muaj, suav nrog kev tsim kho, zaub mov, khoom siv thiab lwm thaj teb. Nyob rau hauv xyoo tas los, HPMC kuj tau qhia tau ntau lub peev xwm hauv kev npaj thiab kev thov ntawm Ceramic Whabranes. Ceramic jhabranes tau siv dav hauv kev kho dej, tshuaj lom neeg thiab lwm yam kev lag luam vim yog lawv cov tshuaj kub siab, cov kua qaub thiab alkali tsis kam thiab lwm yam ntxwv. HPMC tau maj mam dhau los ua tus neeg sawv cev tsis tau pom los ntawm kev txhim kho cov qauv ceramic
1. Cov xeeb ceem ntawm HPMC thiab cov lus qhia rau Ceramic MiFBranes
HPMC yog cov tsis muaj ionic cellulose nrog cov dej ua kom zoo, thermal gelation, zaj duab xis-ua thiab thickenies cov khoom. Cov yam ntxwv ntawm HPMC pab kom nws muab kev ua haujlwm zoo dua thiab ua haujlwm hauv ntau cov txheej txheem npaj. Hauv kev npaj ntawm Ceramic WinerBranes, HPMC tsuas yog ua ntau tus cwj pwm xws li Pore cov ntawv, binders, thiab modifiers, thiab cov hloov kho.
Ceramic vasrranes yog membrane cov ntaub ntawv nrog microporous ceramic cov ntaub ntawv (xws li alumina oxide, thiab lwm yam), nrog siab cov tshuaj lom neeg dag zog. Ceramic vasbranes yog dav siv nyob rau hauv kev kho dej, zaub mov thiab dej haus lim, sib cais ntawm chaw muag tshuaj thiab lwm daim teb. Txawm li cas los xij, cov txheej txheem npaj ntawm Ceramic Whabranes yog qhov nyuaj, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv puj me me, qhov ceev ntawm daim nyias nyias. Yog li no, ntxiv additives xws li HPMC tuaj yeem txhim kho tus qauv thiab kev ua tau zoo ntawm Ceramic LandBranes.
2. Lub luag haujlwm ntawm HPMC hauv kev npaj ntawm Ceramic Whabranes
Lub luag haujlwm ntawm Pore tus tsim
Thaum lub sijhawm npaj cov khoom siv ceramic yuav tsum muaj cov paj ntoos kom tsim nyog thiab lub luag haujlwm loj los xyuas kom lawv cov nyhuv uas tsis pom zoo. HPMC, raws li lub pore ua ntej, tuaj yeem nres thaum lub sijhawm Sinteringing cov txheej txheem ntawm Ceramic membrane cov qauv los ua ib qho qauv sib xws. HPMC yuav decompose thiab volatilize ntawm kev kub siab, thiab yuav tsis nyob hauv cov ceramic membrane, yog li tsim cov tshuaj controllable pore loj thiab faib. Cov nyhuv no ua rau HPMC ib qho tseem ceeb ntxiv nyob rau hauv kev npaj ntawm microporous thiab ultrafiltration ceramic pas dej.
Txhim khu cov khoom siv hauv cov khoom siv
HPMC muaj cov yeeb yaj kiab zoo tshaj plaws thiab tuaj yeem txhim kho cov khoom siv tshuab ntawm daim nyias nyias cov ntaub ntawv thaum lub sijhawm npaj cov khoom siv ceramic ceramic. Nyob rau hauv lub sijhawm thaum ntxov ntawm Ceramic membrane Tsim, HPMC tuaj yeem siv los ua cov khoom siv rau kev sib cuam tshuam ntawm kev sib cuam tshuam, yog li kev txhim kho lub zog tag nrho thiab kev ruaj ntseg ntawm cov kab ke ceramic. Tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ntawm kev tsim cov tshuaj lom ceramic, HPMC tuaj yeem tiv thaiv kab tawg thiab ua kom cov neeg kho tshuab lub zog ntawm cov ceramic membrane tom qab sintering.
Txhim kho qhov ntom ntom thiab kev sib dhos ntawm ceramic membranes
HPMC tseem tuaj yeem txhim kho qhov ceev thiab kev sib dhos ntawm ceramic pas dej. Nyob rau hauv cov txheej txheem npaj ntawm ceramic whbranes, cov kev faib tsis sib xws ntawm cov ntaub ntawv membrane yog qhov tseem ceeb rau kev ua haujlwm ntawm daim nyias nyias. HPMC muaj kev cuam tshuam zoo heev thiab tuaj yeem pab cov hmoov hmoov nplej ua tusyees kev daws teeb meem, yog li zam kev tsis xws luag lossis hauv zos tsis sib xws hauv cov khoom siv membrane. Tsis tas li ntawd, lub viscosity ntawm HPMC hauv kev daws teeb meem tuaj yeem tswj hwm cov kev ua kom muaj cov hmoov av, ua cov quav yeeb quav tshuaj thiab du thaum lub sij hawm tsim qauv.
Txhim kho cov khoom saum npoo av ntawm Ceramic Whabranes
Lwm txoj haujlwm HPMC yog txhawm rau txhim kho cov khoom ntawm Ceramic Ceramic, tshwj xeeb tshaj yog hais txog hydrophilicity thiab anti-fouling cov khoom ntawm daim nyias nyias. HPMC tuaj yeem hloov kho cov tshuaj lom neeg ntawm daim nyias nyias muaj tseeb thaum lub sijhawm npaj cov tshuaj ntxuav ceramic, yog li ua kom muaj peev xwm tiv thaiv kev ua kom muaj peev xwm los tiv thaiv. Hauv qee cov kev siv, cov nplaim dej ceramic yog yooj yim adsorbed los ntawm cov pa phem thiab tsis ua tiav. Lub xub ntiag ntawm HPMC tuaj yeem txo cov kev tshwm sim ntawm qhov tshwm sim no thiab nce kev pabcuam lub neej ntawm kev ua haujlwm ceramic.
3. Synergistic nyhuv ntawm HPMC thiab lwm yam ntxiv
Hauv kev npaj ntawm Ceramic Liner, HPMC feem ntau ua haujlwm hauv kev sib ntxiv nrog rau lwm cov khoom siv sib ntxiv (xws li cov khoom siv, stabilizers, thiab lwm yam) kom ua kom tiav kev ua haujlwm ntawm daim nyias nyias. Piv txwv li, kev siv nrog cov khoom siv sib xyaw nrog cov dej khov kho tuaj yeem ua rau cov hmoov av ntawm Ceramic ntawm Ceramic Ceramic Tsis tas li ntawd, cov nyhuv synergistic ntawm HPMC thiab dispersants pab rau cov neeg muaj txiaj ntsig ceramic, txhim kho kev hnav khaub ncaws thiab cov kev tswj hwm ntawm tus qauv poj niam.
HPMC kuj tseem siv tau ua ke nrog lwm cov ntaub ntawv polymer xws li polyethylene glycol (peg) thiab polyvinyl pyrrolidone (PVP). Cov ntaub ntawv polymer tuaj yeem hloov kho cov pore loj thiab faib cov kab ceramic ceramic, yog li ua tiav cov qauv tsim qauv rau cov kev ua kom sib txawv. Piv txwv li, cov pas tau zoo pore-sib sau ua. Thaum siv ua ke nrog HPMC, lub microporous tus qauv ntawm ceramic javbranes tuaj yeem tswj tau ntau dua, yog li kev txhim kho cov kev ua kom pom kev ntawm daim nyias nyias.
4. Txheej Txheem Flow HPMC kev sib xyaw rau hauv Ceramic Membrane
Cov txheej txheem ntawm kev sib xyaw HPMC rau hauv Ceramic membrane feem ntau suav nrog cov kauj ruam hauv qab no:
Kev npaj ntawm Ceramic Slurry
Ua ntej, Ceramic hmoov (xws li alumina lossis zirconium oxide) yog tov nrog HPMC thiab lwm yam kev ntxiv los npaj cov ceramic slurry nrog lub ntsej muag me. Qhov kev sib txuas ntawm HPMC tuaj yeem hloov kho lub viscosity thiab qhov tsis txaus ntseeg ntawm cov slurry thiab xyuas kom cov kev sib koom ua ke ntawm cov hmoov nplej ntawm cov slurry.
Membrane kev sib sau
Tus Cerrry Slurry yog tsim rau hauv daim membrane seem dawb los ntawm cov hau kev xws li kev ua yeeb yam xws li, extrusion lossis txhaj tshuaj. Hauv cov txheej txheem no, HPMC tuaj yeem tiv thaiv cov kev tawg thiab deformation ntawm daim nyias nyias nyias thiab txhim kho kev hnav khaub ncaws ntawm daim nyias nyias.
Kom Qhuav Thiab Sintering
Tom qab daim nyias nyias qab yog qhuav, nws yog sintered ntawm qhov kub. Hauv cov txheej txheem no, HPMC volatilizes ntawm cov kev kub siab, tawm ntawm tus qauv pauv, thiab thaum kawg ua cov xav tau lub siab nyiam loj thiab porosity.
Tom qab kev kho mob ntawm daim nyias nyias
Tom qab Sinininging, tus kab mob ceramic tuaj yeem kho tau raws li cov ntawv thov yuav tsum tau ua, xws li kev kho kom zoo sib xws, kom ua kom nws ua tau zoo ntxiv.
5. Cov zeem muag thiab cov nyom ntawm HPMC hauv Ceramic membrane daim ntaub ntawv thov
HPMC muaj cov kev cia siab rau kev npaj ua ntej, tshwj xeeb yog cov dej sib cais, qhov chaw HPMC sib cais tau txhim kho cov kev ua tau zoo ntawm Ceramic LandBranes. Txawm li cas los xij, cov seem ntawm HPMC thaum lub sij hawm high-kub sintering thiab nws cov nyhuv rau lub sij hawm ntev ruaj khov ntawm daim nyias nyias tseem yuav tsum tau kawm ntxiv. Ib qho ntxiv, yuav ua li cas thiaj ua tau txoj haujlwm zoo ntxiv nws lub luag haujlwm hauv Ceramic MiRAF Molcular tsim ntawm HPMC kuj yog qhov kev tshawb fawb yav tom ntej.
Raws li ib tug tseem ceeb ib tug neeg sawv cev tseem ceeb hauv kev npaj ntawm ceramic wacbranes los ntawm nws cov khoom tseem ceeb, txhim kho qhov ntom ntom thiab txhim kho cov khoom loj. Nyob rau hauv lub neej yav tom ntej, nrog kev tsim kho tas mus li ntawm ceramic membrane Technology, HPMC yuav ua tau ntau yam hauv kev ua haujlwm dav dav ntawm kev ua tau zoo thiab thov nthuav cov khaub thuas ceramic.
Lub Sijhawm Post: Feb-17-2025