Dispersing hydroxyethyl cellulose (HEC) ke ts'ebetso ea bohlokoa liindastering tse fapaneng, ho kenyeletsoa meriana, litlolo, lijo le kaho. HEC ke polima e se nang ionic, e qhibilihang ka metsing e tsoang ho selulose, e sebelisoang haholo e le moemeli oa ho tiisa, ho tsitsisa le ho etsa lifilimi. Phatlalatso e nepahetseng ea HEC ke ea bohlokoa ho netefatsa ts'ebetso ea eona lihlahisoa tsa ho qetela.
Selelekela sa Hydroxyethyl Cellulose (HEC)
Hydroxyethyl cellulose (HEC) ke polymer e feto-fetohang e nkiloeng ho selulose ka phetoho ea lik'hemik'hale. E sebelisoa hangata liindastering tse kang:
Meriana ea Meriana: HEC e sebelisoa e le mofetoleli oa viscosity le stabilizer mefuteng e sa tšoaneng, ho akarelletsa le meriana ea molomo le ea lihlooho.
Litlolo: HEC e sebelisoa ka litlolo, litlolo, li-shampoo, le lihlahisoa tse ling tsa tlhokomelo ea motho e le ntho e matlafatsang le emulsifier.
Lijo: E sebelisoa lihlahisoa tsa lijo e le setei, stabilizer le gelling agent.
Kaho: HEC e sebelisoa linthong tsa kaho tse kang lipente, likhomaretsi le lihlahisoa tse entsoeng ka samente ho ntlafatsa thepa ea bona ea rheological.
Bohlokoa ba ho hasanya HEC
Phatlalatso e nepahetseng ea HEC e bohlokoa ho fihlela thepa e lakatsehang sehlahisoa sa ho qetela. Phallo e sebetsang e netefatsa:
Ho tšoana: Kabo e ts'oanang ea HEC ho pholletsa le tharollo kapa matrix.
Mosebetsi: HEC e ka phethahatsa karolo ea eona e reriloeng, joalo ka ho tiisa, ho tsitsisa, kapa ho etsa lifilimi.
Ts'ebetso: Litšobotsi tse ntlafalitsoeng tsa ts'ebetso, ho kenyelletsa taolo ea viscosity, botsitso le sebopeho.
Moruo: Ho eketsa katleho ea tšebeliso ea HEC, ho fokotsa litšila, le ho fokotsa litšenyehelo tsa tlhahiso.
Mekhoa ea ho hasanya HEC
1. Mechanical Agitation:
Ho hlohlelletsa kapa ho Kopanya: Sebelisa li-stirrers tsa mochini, li-mixer, kapa li-homogenizers ho qhala HEC ka har'a solvent kapa matrix butle-butle. Fetola lebelo le nako ea ho sisinyeha ho ipapisitse le mahloriso a HEC le litlhoko tsa viscosity.
Ho susumetsa ka lebelo le phahameng: Sebelisa li-stirrers tse lebelo le holimo kapa li-homogenizer bakeng sa ho hasana ka potlako, haholo-holo bakeng sa likhakanyo tse phahameng tsa HEC kapa litharollo tsa viscous.
2. Mokhoa oa Hydration:
Pre-Hydration: Pre-dissolve HEC karolong e 'ngoe ea solvent ka mocheso oa kamore pele u e eketsa ho beche e kholo. Sena se nolofatsa ho hasana habonolo le ho thibela clumping.
Keketso ea Butle-butle: Eketsa HEC butle-butle ho solvent ka ho sisinyeha kamehla ho netefatsa hore metsi a lekaneng le ho hasana.
3. Taolo ea Mocheso:
Mocheso o Molemo ka ho Fetisisa: Boloka mokhoa oa ho hasana ka mocheso o lekaneng oa mocheso ho matlafatsa solubility le kinetics ea ho hasana ea HEC. Ka tloaelo, mocheso oa kamore ho ea ho mocheso o phahameng hanyane o loketse ho hasana ha HEC.
Bate ea Metsi a Mofuthu: Sebelisa bate ea metsi a futhumetseng kapa sekepe se koahetsoeng ho laola mocheso nakong ea hasane, haholo-holo bakeng sa lisebelisoa tse hlokang mocheso o phahameng.
4. Phetoho ea pH:
PH e nepahetseng: Fetola pH ea motsoako oa motsoako kapa oa ho qhalakanngoa ho ea boemong bo nepahetseng bakeng sa ho qhibiliha le ho qhalana ha HEC. Ka kakaretso, ho se nke lehlakore ho maemo a pH hanyenyane a alkaline ho loketse ho hasana ha HEC.
5. Mekhoa ea ho Beta-Shear:
Phetoho ea sekhahla sa Shear: Sebelisa mekhoa ea ho kuta ka ho lokisa sekhahla sa ho kuta nakong ea ho hasana. Litefiso tse phahameng tsa ho kuta li ka thusa ho qhaqha lihlopha tsa HEC le ho khothalletsa ho hasana.
Tšebeliso ea Thepa ea Rheological: Sebelisa lisebelisoa tsa rheological ho lekola le ho laola sekhahla sa ho kuta nakong ea ho hasana, ho netefatsa phallo e tsitsitseng le e sebetsang.
6. Surfactant Asssisted Disspersion:
Khetho ea Surfactant: Khetha li-surfactants tse loketseng kapa li-agent tse qhalakanyang tse lumellanang le HEC le mokhoa oa ho hasana. Li-surfactants li ka fokotsa tsitsipano ea holim'a metsi, tsa ntlafatsa ho kolobisa, le ho thusa ho hasana ha HEC.
Surfactant Concentration: Ntlafatsa bongata ba li-surfactants ho thusa ho hasana ha HEC ntle le ho ama thepa ea eona kapa tšebetso ea sehlahisoa sa ho qetela.
7. Ultrasonication:
Phatlalatso ea Ultrasonic: Sebelisa matla a ultrasonic ho phallo ea HEC u sebelisa li-ultrasonic probes kapa libate. Ultrasonication e khothalletsa ho fokotsa boholo ba likaroloana, ho fokotseha, le ho hasana ha junifomo ea likaroloana tsa HEC ka har'a solvent kapa matrix.
8. Mekhoa ea Phokotso ea Boholo ba Karolo:
Ho sila kapa ho sila: Sebelisa lisebelisoa tsa ho sila kapa ho sila ho fokotsa boholo ba likaroloana tsa HEC, ho thusa ho hasana habonolo le ho ntlafatsa homogeneity ea ho hasana.
Tlhahlobo ea Size ea Particle: Lekola le ho laola kabo ea boholo ba likaroloana tsa HEC e hasantsoeng u sebelisa mekhoa e kang laser diffraction kapa ho hasana ha leseli ho matla.
9. Mehato ea Taolo ea Boleng:
Tekanyo ea Viscosity: Kamehla hlokomela viscosity ea HEC dispersions nakong ea ts'ebetso ea ho hasana ho netefatsa ho tsitsisa le ho fihlela thepa ea rheological e lakatsehang.
Tlhahlobo ea Boholo ba Particle: Etsa tlhahlobo ea boholo ba likaroloana ho hlahloba katleho ea ho hasana le ho netefatsa kabo e tšoanang ea likaroloana tsa HEC.
Ho hasanya hydroxyethyl cellulose (HEC) ka nepo ho bohlokoa bakeng sa ho fihlela thepa e lakatsehang le ts'ebetso lits'ebetsong tse fapaneng tsa indasteri. Ho sebelisa mekhoa e nepahetseng ea ho hasana, ho kenyelletsa ho ferekanngoa ha mechine, mekhoa ea hydration, taolo ea mocheso, pH phetoho, mekhoa ea ho fokotsa li-shear-thinning, thuso ea surfactant, ultrasonication, le ho fokotsa boholo ba likaroloana, ho ka etsa bonnete ba ho hasana ho tšoanang le ho eketsa ts'ebetso ea HEC lihlahisoa tsa ho qetela. Ho feta moo, ho kenya tšebetsong mehato ea taolo ea boleng joalo ka tekanyo ea viscosity le tlhahlobo ea boholo ba likaroloana ho thusa ho boloka botsitso le ho ntlafatsa ts'ebetso ea ho hasana. Ka ho latela litataiso tsena, bahlahisi ba ka ntlafatsa katleho le boleng ba liforomo tse thehiloeng ho HEC ho pholletsa le liindasteri tse fapaneng.
Nako ea poso: Apr-09-2024