Liretse tse ikemetseng li ntse li tsebahala haholo indastering ea kaho ka lebaka la boiketlo ba tsona ba tšebeliso, thepa e babatsehang ea ho phalla, le bokhoni ba ho fana ka sebaka se boreleli, se bataletseng. Har'a lisebelisoa tse fapaneng tse sebelisoang ho lirekere tse ikemetseng, hydroxypropyl methylcellulose (HPMC) e bapala karolo ea bohlokoa ho laola viscosity.
Seretse se ikemetseng se na le botumo lefapheng la kaho bakeng sa bokhoni ba sona ba ho etsa sebaka se boreleli, se bataletseng ka boiteko bo fokolang. Lisebelisoa tsena li fana ka melemo e mengata ho feta mekhoa e tloaelehileng ea ho leka-lekanya, joalo ka boiketlo ba ts'ebeliso, ho omisa ka potlako le ho lumellana le mefuta e fapaneng ea li-substrates. Senotlolo sa ts'ebetso ea seretse sa ho ikemela ke taolo e nepahetseng ea thepa ea rheological, haholo-holo viscosity, e amang ka ho toba thepa ea ho phalla le ho leka-lekanya.
1. Karolo ea HPMC ho seretse sa ho itšebetsa:
Hydroxypropylmethylcellulose (HPMC) ke cellulose ether e atisang ho sebelisoa e le motenya le mofetoleli oa rheology linthong tsa kaho. Likamoreng tse ikemetseng, HPMC e etsa mesebetsi e mengata, ho kenyelletsa le ho boloka metsi, ho ntlafatsa ts'ebetso, le taolo ea viscosity. HPMC ea viscosity e tlase e bohlokoa ka ho khetheha kaha e fana ka phallo e ntle le boemo bo holimo ha e ntse e boloka metsi a lekaneng le thepa ea mochini.
2. Bohlokoa ba viscosity e tlase ea HPMC:
Phallo e ntlafalitsoeng: HPMC ea viscosity e tlase e thusa ho phalla ha liretse tse ikemetseng, tse li lumellang hore li hasane ka mokhoa o ts'oanang holim'a metsi le ho tlatsa ka katleho likheo le mefokolo. Sena se etsa hore ho be le qetello e bonolo, e ts'oanang, e fokotsang tlhokahalo ea ho lokisa holim'a metsi.
Mokhoa o ntlafetseng oa ho sebetsa: Liretse tse ikemetseng tse nang le HPMC tse nang le viscosity e tlaase li bonolo ho kopanya, ho pompa le ho tšela, ho ntlafatsa ts'ebetso le ho fokotsa litlhoko tsa basebetsi. Likonteraka li ka finyella tlhahiso e kholoanyane le katleho nakong ea ts'ebetso ea kopo.
E fokotsa kotsi ea karohano: Li-additives tse phahameng tsa viscosity li ka baka mathata a karohano, e leng ho rarolla ka mokhoa o sa tsitsang ha li-aggregates ka har'a motsoako oa seretse. Low viscosity HPMC thusa ho thibela karohano, ho etsa bonnete ba ho ts'oana le ho tsitsisa sehlahisoa sa ho qetela.
Fokotsa ho ts'oaroa ha moea: Viscosity e phahameng haholo e ka tšoasa lipululana tsa moea ka har'a matrix a seretse, ho beha matla le ho tšoarella ha thepa kotsing. Ka ho sebelisa viscosity e tlase ea HPMC, kotsi ea ho kenella moeeng e fokotsehile, e bakang sebaka se teteaneng, se tšoarellang haholoanyane.
Ho tsamaellana le Thepa ea Pumping: Liretse tse itšebetsang hangata li hloka ho pompa bakeng sa lits'ebetso tse kholo. Foromo e tlase ea viscosity HPMC e tsamaellana le lisebelisoa tsa ho pompa bakeng sa phano e sebetsang hantle, e tsoelang pele ntle le ho koala.
3. Lintlha tse amang viscosity:
Lintlha tse 'maloa li ka ama viscosity ea seretse se ikemetseng, ho kenyelletsa:
Mofuta oa polima le boima ba molek'hule: Mofuta le boima ba molek'hule oa HPMC li na le tšusumetso e kholo ho viscosity. Li-polymers tse tlase tsa boima ba limolek'hule li na le li-viscosity tse tlase, athe li-polymers tse phahameng tsa boima ba limolek'hule li ka baka ho eketseha ha viscosity.
Likahare tsa polymer: Khatello ea HPMC sebopehong sa seretse e ama viscosity, 'me likhakanyo tse phahameng hangata li baka viscosity e phahameng.
Boholo le kabo ea karoloana: Boholo le kabo ea likarolo tse tiileng (mohlala, samente le kakaretso) li susumetsa boitšoaro ba rheological ea lirekere tse ikemelang. Likaroloana tse ntle li ka thusa ho eketsa viscosity ka lebaka la ho eketseha ha sebaka sa holimo le litšebelisano tsa li-interparticle.
Karo-karolelano ea metsi ho tlama: Karo-karolelano ea metsi ho lisebelisoa tse tlamang (ho kenyeletsoa HPMC) e ama ka kotloloho ho phalla ha metsi le viscosity ea seretse se ikemetseng. Ho fetola karolelano ea metsi ho ea ho binder ho lumella taolo e nepahetseng ea viscosity le litšobotsi tsa phallo.
Mokhoa oa ho kopanya: Mokhoa o nepahetseng oa ho kopanya, ho kenyelletsa nako ea ho kopanya le lebelo, e ka ama ho hasana ha HPMC ka har'a matrix a seretse, kahoo e ama viscosity le ts'ebetso ka kakaretso.
4. Finyella sebopeho se tlase sa viscosity HPMC:
Ho fumana liforomo tse tlase tsa viscosity HPMC bakeng sa seretse se itšebetsang, ho ka sebelisoa maano a 'maloa:
Ho Khetha Kereiti e Nepahetseng ea HPMC: Baetsi ba ka khetha limaraka tsa HPMC tse nang le boima bo tlase ba limolek'hule le liprofaele tsa viscosity tse ikhethileng ho fihlela litlhoko tse ikhethileng tsa kopo.
Ntlafatso ea Recipe: Ho lokisa metsoako ea seretse se ikemetseng, ho kenyelletsa le mefuta le boholo ba metsoako, ho ka thusa ho fihlela mofuta o lakatsehang oa viscosity.
Keketso ea li-dispersants: Ho eketsoa ha li-dispersants kapa li-defoamers ho ka ntlafatsa ho hasana ha HPMC ka motsoako oa seretse, ho fokotsa viscosity le ho fokotsa ho kenngoa ha moea.
Tšebeliso ea motsoako o phahameng oa ho kuta: Lisebelisoa tse phahameng tsa ho kopanya li-shear li ka khothalletsa ho hasana ha junifomo ea HPMC le lisebelisoa tse ling, ho ntlafatsa mokelikeli, le ho fokotsa viscosity.
Taolo ea mocheso: Mocheso o ama thepa ea rheological ea seretse sa ho ikemela. Ho laola mocheso nakong ea ho kopanya le ho sebelisa ho thusa ho finyella viscosity e lakatsehang le litšobotsi tsa phallo.
5. Mekhoa le litebello tsa kamoso:
Nts'etsopele ea liforomo tsa HPMC tse nang le viscosity e tlase bakeng sa lirekere tse itšebetsang li lebelletsoe ho tsoela pele ha bahlahisi ba ntse ba leka ho ntlafatsa ts'ebetso, ts'ebetso le ts'ebeliso ea botsoalle. Mekhoa ea nakong e tlang e ka kenyelletsa:
Khokahano ea metsoako e tšoarellang: Tsepamiso e ntseng e hola ea ts'ebetso e ka etsa hore ho amoheloe lisebelisoa tse thehiloeng ho li-bio kapa tse nchafalitsoeng e le mekhoa e meng ho fapana le litlatsetso tsa setso, ho kenyeletsoa HPMC.
Advanced Rheology Modifiers: Patlisiso e tsoelang pele mabapi le liphetoho tse ncha tsa rheology le li-additives li ka lebisa ho nts'etsopele ea libopeho tse sebetsang haholoanyane ho fihlela li-viscosity tse tlase le thepa e ntlafalitsoeng ea phallo.
Moetso oa dijithale le ketsiso: Tsoelo-pele ea ho etsa mohlala oa dijithale le thekenoloji ea ketsiso e ka nolofatsa ntlafatso ea libopeho tsa seretse sa ho ikemela, ho lumella taolo e nepahetseng haholoanyane ea viscosity le ts'ebetso.
Litharollo tse ikhethileng bakeng sa lits'ebetso tse ikhethileng: Baetsi ba ka fana ka litharollo tse ikhethileng bakeng sa litlhoko tse ikhethileng tsa ts'ebeliso, joalo ka lirekere tse behang kapele bakeng sa merero e sa tsotelleng nako kapa litlolo tse nang le lerole le tlase bakeng sa tikoloho ea kahare.
HPMC e nang le viscosity e tlase e bapala karolo ea bohlokoa ts'ebetsong ea liretse tse ikemetseng, ho matlafatsa phallo, ho sebetsa le ho tsitsisa. Ka ho laola viscosity ka katleho, bahlahisi ba ka hlahisa lirekere tse nang le libaka tse boreleli, tse bataletseng ka boiteko bo fokolang le bokhoni bo phahameng. Ha indasteri ea kaho e ntse e tsoela pele ho fetoha, nts'etsopele ea liforomo tsa HPMC tsa viscosity e tlase e ntse e le bohlokoa ho fihlela tlhoko e ntseng e hola ea litharollo tsa boemo bo holimo, tse bonolo ho basebelisi.
Nako ea poso: Feb-28-2024