Ho haha selulose e khethehileng ea hydroxypropyl methyl ho qoba ho kenngoa ha mongobo leboteng, e tla ba tekanyo e nepahetseng ea mongobo e ka lulang ka samenteng ea seretse e hlahisang ts'ebetso e ntle ka metsing le karolo ea hydroxypropyl methyl cellulose ka seretse e ka ba tekano le viscosity, ha viscosity ea hydroxypropyl methyl cellulose e boloka metsi e tla ba betere.
Hang ha mongobo oa hydroxypropyl methyl cellulose o phahame haholo, ho bolokoa ha metsi a hydroxypropyl methyl cellulose ho tla fokotseha, 'me ho tla lebisa ka ho toba katlehong ea kaho ea hydroxypropyl methyl cellulose. Hape re tloaelane le lintho tse tla ba bonolo haholoanyane ho etsa liphoso, re lokela ho lula re le ncha, re tla fumana liphello tse sa lebelloang.
Viscosity e bonahalang ke index ea bohlokoa ea hydroxypropyl methyl cellulose. Mekhoa e tloaelehileng ea ho lekanya ke tekanyo ea rotational viscosity, tekanyo ea capillary viscosity le tekanyo ea ho oela ha viscosity.
Pejana, hydroxypropyl methyl cellulose e ne e khethoa ke tekanyo ea capillary viscosity, ho sebelisoa viscometer ea Uhnscher. Tharollo ea tekanyo hangata ke tharollo ea metsi ea 2, 'me foromo ke: V=Kdt. V ke viscosity ka metsotsoana, K ke kamehla ea viscometer, D ke density ka mocheso o sa khaotseng, 'me T ke nako e nkang ho tloha holimo ho ea tlaase ho viscometer ka metsotsoana. Mokhoa ona oa ts'ebetso o rarahane haholo, haeba ho na le lintho tse sa tsitsang, ho bonolo ho baka liphoso, ho thata ho khetholla boleng ba hydroxypropyl methylcellulose.
Bothata ba ho aha glue stratification ke bothata bo boholo boo bareki ba kopanang le bona. Pele ho tsohle, bothata ba lisebelisoa tse tala bo lokela ho nahanoa bakeng sa ho aha sekhomaretsi stratification. Lebaka le ka sehloohong la ho aha sekhomaretsi stratification ke ho se lumellane lipakeng tsa joala ba polyvinyl (PVA) le hydroxypropyl methylcellulose (HPMC). Lebaka la bobeli ke hore nako ea ho kopanya ha ea lekana; Hape ho na le ts'ebetso ea ho tiisa sekhomaretsi ha e ntle.
Ha ho aha likhomaretsi, instant hydroxypropyl methylcellulose (HPMC) e tlameha ho sebelisoa hobane HPMC e qhalakane feela ka metsing 'me ha e hlile ha e qhale. Hoo e ka bang metsotso e 2, viscosity ea mokelikeli e ntse e eketseha butle-butle, e etsa "viscous colloid" e hlakileng.
Lihlahisoa tse chesang tse qhibilihang, metsing a batang, li ka qhalakanngoa ka potlako metsing a chesang, li nyamela metsing a chesang, ha mocheso o theohela mocheso o itseng, butle-butle ho hlaha viscosity, ho fihlela ho thehoa ha colloid e hlakileng ea viscous. Hydroxypropyl methylcellulose (HPMC) ka har'a sekhomaretsi sa moaho palo e ekelitsoeng e khothaletsoa bakeng sa 2-4kg.
Hydroxypropyl methyl cellulose (HPMC) mohahong oa sekhomaretsi botsitso ba lik'hemik'hale, hlobo, phello ea ho boloka metsi e ntle, 'me ha e amehe ke phetoho ea PH, viscosity ho tloha 100 000 S - 200 000 S e ka sebelisoa. Empa ka tlhahiso ha e phahametse viscosity e molemo, viscosity le matla a tlamahano a lekana ka tsela e fapaneng, e phahameng ea viscosity, matla a manyenyane, ka kakaretso 100,000S viscosity e loketse.
Nako ea poso: Sep-16-2022