Mokhoa oa ho khetha hydroxypropyl methylcellulose ho boloka metsi

Ho boloka metsi ho tsoa ho hydroxypropyl methylcellulose ke e 'ngoe ea thepa ea bohlokoa ea hydroxypropyl methylcellulose. Lintho tse kang mocheso oa moea, mocheso le lebelo la khatello ea moea li tla ama sekhahla sa ho fetoha ha metsi seretseng sa samente le lihlahisoa tse thehiloeng ho gypsum. Ka hona, ka linako tse fapaneng tsa selemo, ho na le phapang e itseng molemong oa ho boloka metsi oa lihlahisoa tse nang le palo e lekanang ea hydroxypropyl methylcellulose e kentsoeng.

Ka kakaretso, ha viscosity ea hydroxypropyl methylcellulose e phahame, phello ea ho boloka metsi e tla ba molemo, empa phello ea viscosity ho boloka metsi e tla fokotseha ha viscosity e feta 100,000 mpa. Bakeng sa hydroxypropyl methylcellulose e nang le viscosity e fetang 100,000, hoa hlokahala ho eketsa palo ea hydroxypropyl methylcellulose ho eketsa haholo tekanyo ea ho boloka metsi.

Mohahong o ikhethileng, phello ea ho boloka metsi ea slurry e ka fetoloa ka ho eketsa kapa ho fokotsa palo ea hydroxypropyl methylcellulose. Lihlahisoa tsa lihlahisoa tsa Hydroxypropyl methylcellulose li ka rarolla bothata ba ho boloka metsi tlas'a mocheso o phahameng. Linakong tsa mocheso o phahameng, haholo-holo libakeng tse chesang le tse omileng le kaho ea lera le tšesaane ka lehlakoreng le nang le letsatsi, ho hlokahala hydroxypropyl methylcellulose ea boleng bo holimo ho ntlafatsa ho boloka metsi a slurry.

Hydroxypropyl methylcellulose ea boleng bo holimo e na le ho tšoana ho hotle haholo. Lihlopha tsa eona tsa methoxyl le hydroxypropoxyl li ajoa ka ho lekana hammoho le ketane ea limolek'hule tsa cellulose. E ka ntlafatsa liathomo tsa oksijene ho li-bond tsa hydroxyl le ether. Bokhoni ba ho kopanya metsi ho theha li-hydrogen bonds bo fetola metsi a sa lefelloeng hore e be metsi a tlamiloeng, ka tsela eo ho laola ka katleho mouoane oa metsi o bakoang ke mocheso o phahameng oa mocheso le ho finyella ho boloka metsi a mangata.

Hydroxypropyl methylcellulose ea boleng bo phahameng e ka qhalakana ka mokhoa o ts'oanang le ka katleho ka har'a seretse sa samente le lihlahisoa tse thehiloeng ho gypsum, e phuthela likaroloana tsohle tse tiileng, ebe e etsa filimi e mongobo, 'me mongobo o ka setsing o tla lokolloa butle-butle ka nako e telele. Karabelo ea hydration e etsahala ka thepa ea gelling ea inorganic, ka hona e netefatsa matla a tlamahano le matla a khatello ea thepa. Ka hona, mohahong o phahameng oa mocheso oa lehlabula, e le ho finyella phello ea ho boloka metsi, hoa hlokahala ho eketsa lihlahisoa tsa boleng bo phahameng ba hydroxypropyl methylcellulose ka bongata bo lekaneng ho ea ka foromo, ho seng joalo, ho haella ha metsi, matla a fokotsehileng, le ho phatloha ho tla etsahala ka lebaka la ho omisa haholo. Mathata a boleng a kang ho phunya likoti, ho phunya likoti le ho oela le ona a eketsa bothata ba kaho bakeng sa basebetsi. Ha mocheso o theoha, palo ea hydroxypropyl methylcellulose e kenyelletsoeng e ka fokotseha butle-butle, 'me phello e tšoanang ea ho boloka metsi e ka finyelloa.