Viscosity e bonahalang ke sesupo sa bohlokoa sa hydroxypropyl methylcellulose, mekhoa ea ho lekanya e sebelisoang hangata e kenyelletsa rotational viscometry, capillary viscometry le drop viscometry.
Hydroxypropyl methylcellulose e kile ea lekanngoa ho sebelisoa capillary viscometry ho sebelisa viscometer ea Ubbelohde. Hangata tharollo ea tekanyo ke tharollo e nang le metsi a 2, foromo ke: V = Kdt. V e emela viscosity, K ke kamehla ea viscometer, d e emela density ka mocheso o sa khaotseng, t e bolela nako ho tloha holimo ho ea tlaase ho viscometer, yuniti ke ea bobeli, mokhoa ona o boima ho o sebetsa. ho bonolo ho baka Phoso, 'me ho thata ho khetholla boleng ba hydroxypropyl methylcellulose.
Bothata ba delamination ea sekhomaretsi sa kaho ke bothata bo boholo boo bareki ba kopanang le bona. Pele ho tsohle, bothata ba lisebelisoa tse tala bo lokela ho nahanoa bakeng sa lera la sekhomaretsi sa kaho. Lebaka le ka sehloohong la lera la sekhomaretsi sa kaho ke hore polyvinyl alcohol (PVA) le hydroxypropyl methylcellulose (HPMC) ha li tsamaisane. Lebaka la bobeli ke hore nako e susumetsang ha ea lekana, 'me ts'ebetso e teteaneng ea sekhomaretsi sa kaho ha e ntle.
Hydroxypropyl methylcellulose (HPMC) ea tlhahiso ea hona joale e hloka ho sebelisoa sekhomaretsing sa kaho, hobane hydroxypropyl methylcellulose (HPMC) e hasane ka metsing 'me ha e hlile ha e khone ho qhibiliha,' me viscosity ea mokelikeli e eketseha butle-butle ka metsotso e ka bang 2, e etsa Transparent viscous colloid. .
Ha lihlahisoa tse chesang tse qhibilihisang li kopantsoe hammoho metsing a batang, li tla qhalana ka potlako metsing a chesang ebe li nyamela metsing a chesang. Ha mocheso o theohela mocheso o itseng, viscosity e tla hlaha butle-butle ho fihlela ho thehoa li-viscous colloid tse hlakileng. Hydroxypropyl ka sekhomaretsi sa kaho Tekanyo e khothaletsoang ea HPMC ke 2-4kg.
Hydroxypropyl methylcellulose (HPMC) e na le lisebelisoa tse tsitsitseng tsa lik'hemik'hale, ho hanyetsa hlobo le ho boloka metsi a matle ho li-adhesives tsa kaho, 'me ha e amehe ke liphetoho tsa pH. E ka sebelisoa ho tloha ho 100,000 S ho ea ho 200,000 S, empa ho phahama ha viscosity tlhahiso, ho molemo, le viscosity e fapane ka tsela e fapaneng le matla a ho kopanya. Ho phahama ha viscosity, ho theola matla, ka kakaretso viscosity ea 100,000 S e loketse.
Nako ea poso: Apr-20-2023