Ka indasteri ea pente, botsitso le rheology ea pente ea mebala ke ea bohlokoa. Leha ho le joalo, nakong ea ho boloka le ho sebelisoa, pente ea mebala e atisa ho ba le mathata a kang ho teteaneng le ho kopanya, tse amang phello ea kaho le boleng ba ho roala.Hydroxyethyl cellulose (HEC), e le ntho e tloaelehileng ea ho qhibiliha ha polymer thickener, e phetha karolo ea bohlokoa ho etsoa ha pente. E ka ntlafatsa ka katleho thepa ea rheological ea peista ea mebala, e thibela ho kopanya, le ho ntlafatsa botsitso ba polokelo.
1. Mabaka a ho teteaneng le ho kopanya ha pente ea 'mala oa pente
Ho teteana le ho kopanya ha pente ea pente hangata ho amana le lintlha tse latelang:
Ho hasana ho sa tsitsang ha pigment: Likaroloana tsa pigment tse penteng ea 'mala li ka phaphamala le ho lula nakong ea polokelo, e leng se bakang khatello e feteletseng ea lehae le ho kopana.
Mouoane oa metsi tsamaisong: Nakong ea polokelo, mouoane oa karolo ea metsi o tla etsa hore viscosity ea pente ea mebala e eketsehe, esita le ho theha taba e omileng holim'a metsi.
Ho se lumellane pakeng tsa li-additives: Li-thickeners tse itseng, li-disperants kapa li-additives tse ling li ka 'na tsa itšoara, tse amang thepa ea rheological ea peista ea mebala, e bakang keketseho e sa tloaelehang ea viscosity kapa sebopeho sa flocculent.
Phello ea matla a ho kuta: Ho tsosoa ha nako e telele ha mochini kapa ho pompa ho ka baka tšenyo ea sebopeho sa ketane ea polymer ka har'a sistimi, ho fokotsa mokelikeli oa peista ea mebala, 'me ho etsa hore e be viscous kapa agglomerated.
2. Mokhoa oa ts'ebetso ea hydroxyethyl cellulose
Hydroxyethyl cellulose (HEC) ke motsoako oa selulose o seng oa ionic o nang le botenya bo botle, bokhoni ba ho fetola rheological le botsitso ba ho hasana. Mokhoa oa eona o ka sehloohong oa ts'ebetso ea pente ea pente e kenyelletsa:
Thickening le rheological phetoho: HEC ka kopana le limolek'hule tsa metsi ka bonding haedrojene ho theha lera tsitsitseng hydration, eketsa viscosity ea tsamaiso, thibela likaroloana pigment ho tloha agglomerating le ho rarolla, 'me ho etsa bonnete ba hore peista mebala e boloka fluidity e ntle nakong ea ho ema kapa kaho.
Sistimi e tsitsitseng ea ho hasana: HEC e na le ts'ebetso e ntle ea holim'a metsi, e ka apesa likaroloana tsa pigment, ea ntlafatsa dispersibility ea bona karolong ea metsi, e thibela ho kopana pakeng tsa likaroloana, kahoo e fokotsa ho phalla le ho kopanya.
Mouoane o khahlanong le metsi: HEC e ka etsa lera le itseng la tšireletso, ea fokotsa sekhahla sa ho fetoha mouoane ha metsi, ea thibela pente ea mebala hore e se ke ea teteaneng ka lebaka la tahlehelo ea metsi, 'me ea atolosa nako ea polokelo.
Ho hanyetsa ho kuta: HEC e fana ka pente e ntle ea thixotropy, e fokotsa viscosity tlas'a matla a phahameng a ho kuta, e thusa ho haha, 'me e ka tsosolosa viscosity ka potlako tlas'a matla a tlaase a ho kuta, ho ntlafatsa ts'ebetso ea pente e khahlanong le ho senya.
3. Melemo ea hydroxyethyl cellulose ka pente ea mebala ea pente
Ho kenyelletsa hydroxyethyl cellulose tsamaisong ea pente ea pente ho na le melemo e latelang:
Ho ntlafatsa botsitso ba polokelo ea pente ea mebala: HEC e ka thibela ka katleho ho ferekana ha pigment le agglomeration, ho etsa bonnete ba hore pente ea mebala e boloka metsi a tšoanang ka mor'a ho boloka nako e telele.
Ntlafatso ea ts'ebetso ea kaho: HEC e fana ka pente ea mebala e metle ea rheological, e etsa hore ho be bonolo ho borashe, ho roala kapa ho fafatsa nakong ea kaho, ho ntlafatsa maemo a kaho ea pente.
Ho ntlafatsa ho hanyetsa metsi: HEC e ka fokotsa phetoho ea viscosity e bakoang ke ho fetoha mouoane oa metsi, e le hore pente ea mebala e ka boloka botsitso bo botle tlas'a maemo a fapaneng a tikoloho.
Tšebelisano e matla: HEC ke motenya o se nang ionic, o nang le tumellano e ntle le li-dispersants tse ngata, li-wetting agents le li-additives tse ling, 'me li ke ke tsa baka ho se tsitse ha tsamaiso ea tlhahiso.
Tšireletso le tšireletseho ea tikoloho: HEC e tsoa ho selulose ea tlhaho, e finyella litlhoko tsa tšireletso ea tikoloho, ha e lokolle lintho tse kotsi, 'me e lumellana le mokhoa oa nts'etsopele ea botala le tšireletso ea tikoloho ea liphahlo tse thehiloeng metsing.
4. Tšebeliso le litlhahiso tsa hydroxyethyl cellulose
E le ho bapala karolo ea HEC hamolemo, lintlha tse latelang li lokela ho hlokomeloa ha u li sebelisa ka mokhoa oa ho penta ka mebala:
Taolo e utloahalang ea palo ea tlatsetso: Chelete ea HEC hangata e pakeng tsa 0.2% -1.0%. Chelete e khethehileng ea tšebeliso e hloka ho fetoloa ho ea ka litlhoko tsa mokhoa oa ho roala ho qoba viscosity e feteletseng le ho ama ts'ebetso ea kaho.
Ts'ebetso ea pele ho ho qhibiliha: HEC e lokela ho qhalakanngoa le ho qhibiliha ka metsing pele, ebe e kenngoa tsamaisong ea ho peista mebala ka mor'a ho etsa tharollo e ts'oanang ho etsa bonnete ba hore e sebelisa ka botlalo liphello tsa eona tse teteaneng le tse qhalakang.
Sebelisa le li-additives tse ling: E ka kopanngoa ka mokhoa o utloahalang le li-disperants, li-wetting agents, joalo-joalo ho ntlafatsa botsitso ba ho hasana ha li-pigments le ho ntlafatsa ts'ebetso ea ho roala.
Qoba liphello tse phahameng tsa mocheso: The solubility ea HEC e ameha haholo ke mocheso. Ho khothalletsoa ho e qhaqha ka mocheso o loketseng (25-50 ℃) ho qoba ho kopana kapa ho qhibiliha ho sa lekaneng.
Hydroxyethyl cellulosee na le bohlokoa ba ts'ebeliso ea sistimi ea pente ea mebala. E ka rarolla ka katleho mathata a peista mebala thickening le agglomeration, le ho ntlafatsa polokelo botsitso le tshebetso ya kaho. Botenya ba eona, botsitso ba ho hasana le ho hanyetsa mouoane oa metsi ho etsa hore e be tlatsetso ea bohlokoa bakeng sa lipente tse thehiloeng metsing. Lits'ebetsong tse sebetsang, phetoho e utloahalang ea tekanyo ea HEC le mokhoa oa ho eketsa e ka eketsa melemo ea eona le ho ntlafatsa boleng ba pente ka kakaretso. Ka nts'etsopele ea lipente tse thehiloeng metsing tse nang le botsoalle ho tikoloho, litebello tsa tšebeliso ea HEC li tla ba tse pharaletseng.
Nako ea poso: Apr-09-2025