Hydroxypropyl methyl cellulose ka seretse se omeletseng, ho eketsoa ha cellulose ether e tlase haholo, empa e ka ntlafatsa haholo ts'ebetso ea seretse se metsi, ts'ebetso ea kaho ea seretse ke e 'ngoe ea li-additives tse ka sehloohong. Hona joale, hydroxypropyl methyl cellulose e sebelisoang ho seretse se ommeng sa cellulose ether haholo-holo ke hydroxypropyl methyl cellulose ether (HPMC). Hydroxypropyl methyl cellulose ka seretse se omeletseng HPMC haholo-holo e bapala karolo ea ho boloka metsi, ho tiisa, ho ntlafatsa ts'ebetso ea kaho. Hydroxypropyl methylcellulose HPMC ha e kenye letsoho karabelong efe kapa efe ea lik'hemik'hale, e bapala karolo e thusang feela. Putty phofo e phaella ka metsi, leboteng, ke karabelo ea lik'hemik'hale, hobane ho na le moloko oa lintho tse ncha, putty phofo leboteng ho tloha leboteng, fatše ka phofo, ebe e sebelisoa, ha e sa le joalo, hobane e thehile thepa e ncha (calcium carbonate). Likarolo tse ka sehloohong tsa phofo ea grey calcium ke: Ca(OH)2, CaO le palo e nyenyane ea CaCO3 motsoako, CaO+H2O=Ca(OH)2 - Ca(OH)2+CO2=CaCO3↓+H2O calcium molora metsing. le moea tlas'a khato ea CO2, ho thehoa ha k'halsiamo carbonate, 'me HPMC feela ho boloka metsi, thusa k'halsiamo molora molemo karabelo, ea eona ha aa ka a kopanela karabelo efe kapa efe.
Boleng bo phahameng ba hydroxypropyl methyl cellulose e ka qhalakana ka mokhoa o ts'oanang le ka katleho ka har'a seretse sa samente le lihlahisoa tsa samente, 'me ea paka likaroloana tsohle tse tiileng,' me ea etsa lera la filimi e kolobisang, mongobo o botlaaseng ka nako e telele o lokollotsoe butle butle, le inorganic cementitious material hydration reaction. , e le ho netefatsa matla a tlamahano le matla a khatello ea thepa. Ka hona, ka mocheso o phahameng oa lehlabula kaho, e le ho finyella phello ea ho boloka metsi, ho hlokahala hore u kenye lihlahisoa tsa boleng bo phahameng ba HPMC ho ea ka mokhoa o hlophisitsoeng, ho seng joalo, ho tla ba le ho omella ka potlako haholo 'me ho bakoa ke ho haella ha metsi, ho fokotsa matla, ho senya, ho se na letho. drum and fall off le mathata a mang a boleng, empa hape a eketsa bothata ba kaho ea basebetsi. Ha mocheso o fokotseha, palo ea metsi a kenyelletsoeng ke HPMC e ka fokotseha butle-butle, 'me phello e tšoanang ea ho boloka metsi e ka finyelloa.
Nako ea poso: Sep-16-2022