Ungahlanganisa kanjani i-HPMC kulwelwesi lwe-ceramic?

I-Hydroxypropyl Methylcellulose (HPMC), njengezinto ze-polymer, imvamisa isetshenziswa ezinkambeni ezahlukahlukene zezimboni, kufaka phakathi ukwakhiwa, ukudla, amakhamishini kanye neminye imikhakha. Eminyakeni yamuva nje, i-HPMC ikhombise futhi amandla amakhulu ukulungiselela nokusetshenziswa kwamalungu e-ceramic. Ulwelwesi lwe-ceramic lusetshenziswa kabanzi ekwelashweni kwamanzi, amakhemikhali, emithi kanye nezinye izimboni ngenxa yamandla abo aphezulu, ukumelana okushisa okuphezulu, ukumelana ne-alkali kanye nezinye izici. I-HPMC iye kancane kancane ibe yi-ejenti ebaluleke kakhulu lapho kulungiswa ulwelwesi lwe-ceramic ngokwenza ngcono ukwakheka kwamalungu e-ceramic, ngcono ukusebenza kwawo nokwenza ngcono inqubo yazo yokulungiselela.

1. Izici eziyisisekelo ze-HPMC kanye nokwethulwa kolwelwesi lwe-ceramic
I-HPMC iyi-ether engeyona eye-tholic cellulose ene-solubility enhle yamanzi, i-gelalo eshisayo, i-film-yakha izakhiwo. Lezi zici ze-HPMC zikwenza amandla okuhlinzeka ngokusebenza okungcono kokusebenza kanye nokusebenza komkhiqizo ezinqubweni eziningi zokulungiselela. Lapho kulungiswa ulwelwesi lwe-ceramic, i-HPMC ikakhulukazi idlala izindima eziningi ezifana nabasunguli bezimpondo, ama-beinders, nama-modifiers.

Ulwelwesi lwe-ceramic lungolwelwesi lwe-membrane olunezinhlaka ze-microprorous ezenziwe yi-posting ceramic (njenge-alumina, i-zirconium oxide, i-titanium dioxide, njll.), Ngamandla amahle kakhulu wamakhemikhali. Ulwelwesi lwe-Ceramic lusetshenziswa kabanzi ekwelashweni kwamanzi, ekudleni kanye nokuhlunga kwesiphuzo, ukuhlukaniswa kwemithi kanye nezinye izinkambu. Kodwa-ke, inqubo yokulungiselela ama-membranes we-ceramic iyinkimbinkimbi, ikakhulukazi ekuqondisweni kwesakhiwo se-pore, ubuningi bezinto zokulwa nolwelwesi kanye nokufana kwe-membrane ebusweni. Ngakho-ke, ukufaka izengezo ezifana ne-HPMC zingathuthukisa ngempumelelo ukwakheka kanye nokwenza ulwelwesi lwe-ceramic.

2. Iqhaza le-HPMC lapho kulungiswa ulwelwesi lwe-ceramic
Indima Yezazi Zama-Pore
Ngesikhathi sokulungiselela ulwelwesi lwe-ceramic, izinto zokukhumbula ulwelwesi zidinga ukuba ne-porolity efanelekile kanye nokusatshalaliswa kosayizi we-pore ukuqinisekisa umphumela wabo omuhle wokuhlunga. I-HPMC, njenge-pore yangaphambili, ingakwazi ukukala ngesikhathi senqubo ye-ceramic membrane yokwakha i-pore deam eyunifomu. I-HPMC izobola futhi ivale amazinga okushisa aphezulu, futhi ngeke ihlale kulwelwesi lwe-ceramic, ngaleyo ndlela liyenzile usayizi wokulawulwa kwe-pore. Lo mphumela wenza i-HPMC ibe yisengezo esibalulekile ekulungiseleleni ama-Microsorous and Ultrafiltration membranes we-ceramic.

Thuthukisa izakhiwo zemishini zezinto zokwenziwa ze-membrane
I-HPMC inezakhiwo ezinhle kakhulu zefilimu futhi ingathuthukisa izakhiwo zemishini yezinto zokwenziwa nge-membrane ngesikhathi sokulungiselela ulwelwesi lwe-ceramic. Esikhathini sokuqala kokwakheka kwe-ceramic membrane, i-hpmc ingasetshenziswa njenge-binder yezinto zokwengeza ukuthuthuka ukuthuthukisa ukuxhumana phakathi kwezinhlayiya, ngaleyo ndlela kuthuthukise amandla aphelele nokuqina kolwelwesi lwe-ceramic. Ikakhulu kwinqubo yokwenza ulwelwesi lwe-ceramic, i-HPMC ingavimbela ukuqhekeka kanye nodoti kwezikhala ze-membrane futhi kuqinisekiswe amandla omshini wolwelwesi lwe-ceramic ngemuva kokona.

Thuthukisa ubuntu kanye nokufana kolwelwesi lwe-ceramic
I-HPMC ingathuthukisa nobunzima kanye nokufana kolwelwesi lwe-ceramic. Enqubweni yokulungiselela ama-ammebrane we-ceramic, ukusatshalaliswa komfaniswano wezinto zokwenziwa nge-membrane kubalulekile ekusebenzeni kolwelwesi. I-HPMC inokuhlakazeka okuhle kakhulu futhi ingasiza ama-powers we-ceramic ukuthi asatshalaliswe ngokulinganayo kwikhambi, ngaleyo ndlela agweme iziphambeko noma ukungalingani kwasendaweni ezintweni ze-membrane. Ngaphezu kwalokho, i-viscosity ye-HPMC kwikhambi ingalawula inani le-sedimentation lama-powders we-ceramic, okwenza izinto ezi-membrane zibe mkhulu ngokwengeziwe futhi zibusheleleke ngesikhathi senqubo yokwakha.

Thuthukisa izakhiwo ezingaphezulu kolwelwesi lwe-ceramic
Enye indima enkulu ye-HPMC ukuthuthukisa izakhiwo ezingaphezulu kolwelwesi lwe-ceramic, ikakhulukazi ngokuya nge-hydrophility kanye nezakhiwo ezilwa nolwelwesi. I-HPMC ingaguqula izakhiwo zamakhemikhali ze-membrane ebusweni ngesikhathi sokulungiselela ulwelwesi lwe-ceramic, okwenza lube yi-hydrophilic, ngaleyo ndlela ngithuthukise amandla alwa nentukuthelo kalwelwesi. Kwezinye izinhlelo zokusebenza, ingaphezulu le-ceramic membrane kalula i-addesbed ngabangcoli futhi yehluleka. Ukuba khona kwe-HPMC kunganciphisa ngempumelelo ukuvela kwalesi simo futhi kwandise impilo yenkonzo yolwelwesi lwe-ceramic.

3. Umphumela we-Synergistic we-HPMC nezinye izengezo
Lapho kulungiswa ulwelwesi lwe-ceramic, i-hpmc imvamisa isebenza ngokushintshana nezinye izithasiselo (njengama-spitizers, ama-dispersants, abaqinisi, njll.) Ukwenza ngcono ukusebenza kwe-membrane. Isibonelo, ukusetshenziswa okuhlanganisiwe okuhlanganisiwe ngamapulasitiki kungenza i-shrinkage yolwelwesi lwe-ceramic umfaniswano ngaphezulu ngesikhathi sokuthola isono futhi ivikele isizukulwane semifantu. Ngaphezu kwalokho, umphumela we-synergistic we-HPMC kanye ne-dispersants usiza ukusabalalisa ngokulinganayo amapopikhali e-ceramic, athuthukise ukufana kwezinto zokulwa nolwelwesi nokulawulwa kwesakhiwo se-pore.

I-HPMC nayo isetshenziswa kaningi ngokuhlanganiswa nezinye izinto ze-polymer ezinjenge-polyethylene glycol (isikhonkwane) ne-polyvinyl pyrlolidone (PVP). Lezi zinto ze-polymer zingaphinde zilungise usayizi we-pore kanye nokusatshalaliswa kwama-membrane we-ceramic, ngaleyo ndlela kufinyeleleze ukwakhiwa kwezidingo eziguqukayo kwezidingo ezihlukile zokuhlunga. Isibonelo, isikhonkwane sinomphumela omuhle owakha umphumela. Lapho isetshenziswa kanye ne-HPMC, ukwakheka kwe-microporous kolwelwesi lwe-ceramic kungalawulwa ngokunembile, ngaleyo ndlela kuthuthukise ukusebenza kahle kwe-fielbration.

4. Ukugeleza kwenqubo yokuhlanganiswa kwe-HPMC ku-Ceramic Membrane
Inqubo yokuhlanganisa i-HPMC ku-Ceramic membrane imvamisa ifaka lezi zinyathelo ezilandelayo:

Ukulungiselela ukubukeka kwe-ceramic
Okokuqala, i-powder ye-ceramic (efana ne-alumina noma i-zirconium oxide) ixubene ne-HPMC nezinye izengezo ukulungiselela ukuthambeka kwe-ceramic nge-fluodity ethile. Ukungezwa kwe-HPMC kungaguqula i-viscosity kanye nokuhlakazwa kwe-slurry futhi kuqinisekiswe ukuhanjiswa okufanayo kwe-ceramic powder ku-slurry.

UMembrane kwakheka
I-slurry ye-ceramic yakhiwa ngolwelwesi oludingekayo lungenalutho ngezindlela ezinjengokusakaza, ukukhishwa noma umjovo. Kule nqubo, i-HPMC ingavimba ngempumelelo ukuqhekeka nokuguquguquka kwe-membrane kungenalutho futhi kuthuthukise ukufana kwe-membrane.

Ukomisa nesono
Ngemuva kokuthi ulwelwesi olungenalutho lomisiwe, lwenziwa ngamazinga okushisa aphezulu. Kule nqubo, i-HPMC inamathela ekushiseni okuphezulu, ishiya isakhiwo se-pore, bese ekugcineni yakha ulwelwesi lwe-ceramic ngosayizi wobukhulu obuthandekayo kanye ne-porusity.

Ukwelashwa kwangemva kukalwelwesi
Ngemuva kwesono, ulwelwesi lwe-ceramic lungaphathwa ngemuva kwezidingo zesicelo, njengokuguqulwa komhlaba, ukunamathela noma ezinye izindlela zokwelapha ezisebenzayo, ukwenza ngcono ukusebenza kwayo.

5. Amathemba nezinselelo ze-HPMC ku-Ceramic Membrane Izicelo
I-HPMC inamathemba okusebenza abanzi lapho kulungiswa ulwelwesi lwe-ceramic, ikakhulukazi kwizicelo eziphezulu ezifana nokwelashwa kwamanzi kanye nokwehlukaniswa kwegesi, lapho i-HPMC ithuthukisa kakhulu ukusebenza ngolwelwesi lwe-ceramic. Kodwa-ke, okusele kwe-HPMC ngesikhathi sokushisa okushisa okuphezulu kanye nomphumela wayo ekuzinweni kwesikhathi eside kolwelwesi kusadinga ukufundwa. Ngaphezu kwalokho, ukuthi ungaqhubekela phambili kanjani indima yayo ngolwelwesi lwe-ceramic ngokusebenzisa ukwakhiwa kwamangqamuzana kwe-HPMC nakho kuyinkomba ebalulekile yocwaningo lwesikhathi esizayo.

Njengomenzeli obalulekile osizayo lapho kulungiswa ulwelwesi lwe-ceramic, i-HPMC ivele yaba ngolunye lwezinto ezisemqoka lapho kulungiswa ulwelwesi lwe-ceramic ngemiphumela yalo enezici eziningi njengokuklanywa kwemishini, ukuthuthuka kwezakhiwo ezithuthukisiwe. Ngokuzayo, ukuthuthukiswa okuqhubekayo kobuchwepheshe be-ceramic membrane, i-HPMC izodlala indima ebalulekile ebangeni elibanzi lezinkambu, ukukhuthaza ukuthuthukiswa kokusebenza kanye nokwandiswa kohlelo lokusebenza lwe-ceramic membranes.