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Indima ye-hydroxypropyl methyl cellulose odakeni olumanzi

Iqhaza le-HPMC odakeni olumanzi

Udaka lwengxube emanzi: Udaka oluxubile uhlobo lukasimende, isamba esihle, ingxube namanzi, futhi ngokusho kwezakhiwo zezingxenye ezihlukahlukene, ngesilinganiso esithile, ngemva kokulinganiswa esiteshini sokuxuba, kuxutshwe, kuthuthelwe endaweni esetshenziswa iloli, lingene esitsheni sokugcina esizinikele, futhi lisetshenziswe ngesikhathi esibekiwe ingxube emanzi eqediwe.

IHydroxypropyl methyl cellulose isetshenziswa njenge-ejenti egcina amanzi odaka lukasimende, ukupompa udaka lwe-retarder.Ku-gypsum njengesibophezelo sokuthuthukisa uhlelo lokusebenza nokwelula isikhathi sokusebenza, i-hydroxypropyl methylcellulose HPMC ukugcinwa kwamanzi ukuze i-slurry ngemva kokoma ingasheshi kakhulu futhi iqhekeke, iqine ukuze kuthuthukiswe amandla.Ukugcinwa kwamanzi kuyimpahla ebalulekile ye-hydroxypropyl methyl cellulose HPMC, futhi kuphinde kube ukukhathazeka kwabakhiqizi abaningi bakadaka olumanzi.Izici ezithinta umphumela wokugcina amanzi wodaka olumanzi zihlanganisa inani le-HPMC elingeziwe, i-viscosity ye-HPMC, ukucoleka kwezinhlayiya kanye nezinga lokushisa lendawo esetshenziswayo.
IHydroxypropyl methyl cellulose HPMC endimeni yodaka olumanzi indima eyinhloko ezicini ezintathu, esisodwa siwumthamo omuhle kakhulu wokubamba amanzi, okwesibili ukufana kodaka olumanzi kanye ne-thixotropy yethonya, okwesithathu ukusebenzisana nosimende.Ukugcinwa kwamanzi e-cellulose ether kuncike esilinganisweni sokumuncwa kwamanzi kwesisekelo, ukwakheka kodaka lodaka, ukujiya kongqimba lodaka, isidingo samanzi odaka, isikhathi sokusetha.Uma kuphezulu ukucaca kwe-hydroxypropyl methyl cellulose, kuba ngcono ukugcinwa kwamanzi.
Izici ezithinta ukugcinwa kwamanzi kodaka olumanzi zihlanganisa i-viscosity ye-cellulose ether, ukungeza inani, usayizi wezinhlayiyana nezinga lokushisa.Uma kukhulu i-viscosity ye-cellulose ether, kungcono ukugcina amanzi.I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC.Ngomkhiqizo ofanayo, ukusebenzisa izindlela ezahlukene ukukala i-viscosity yemiphumela kuyahlukahluka kakhulu, abanye ngisho nangesici sokubili.Ngakho-ke, ukuqhathanisa i-viscosity kufanele kwenziwe ngendlela efanayo yokuhlola, kufaka phakathi izinga lokushisa, i-rotor, njll.

Ngokuvamile, ukuphakama kwe-viscosity, kungcono ukugcina amanzi.Kodwa-ke, ukuphakama kwe-viscosity, ukuphakama kwesisindo samangqamuzana e-HPMC, kanye ne-solubility ephansi ye-HPMC, okunomthelela omubi emandleni nokusebenza kokwakhiwa kodaka.Ukuphakama kwe-viscosity, kusobala kakhulu umphumela wokuqina wodaka, kodwa awuhlobene ngokuqondile.Ukuphakama kwe-viscosity, udaka olumanzi lunamathela kakhulu, ukusebenza kahle kokwakhiwa, ukusebenza kwe-viscous scraper kanye nokunamathela okuphezulu ku-substrate.Nokho, ukuthuthukiswa kwamandla esakhiwo sodaka olumanzi ngokwalo akuzange kusize.Kokubili ukwakhiwa, ukusebenza akuyona into esobala yokulwa nokulenga.Ngokuphambene, i-viscosity ethile emaphakathi nephansi kodwa i-hydroxypropyl methylcellulose eshintshiwe inokusebenza okuhle kakhulu ekuthuthukiseni amandla esakhiwo sodaka olumanzi.
Uma sikhulu inani le-cellulose ether PMC efakwe udaka olumanzi, kungcono ukugcina amanzi, ukuphakama kwe-viscosity, ukugcinwa kwamanzi kangcono.I-Fineness futhi iyinkomba yokusebenza ebalulekile ye-hydroxypropyl methyl cellulose.
Ukucoleka kwe-hydroxypropyl methyl cellulose nakho kunomthelela othile ekugcinweni kwayo kwamanzi.Ngaphansi kwezimo ezijwayelekile, i-viscosity efanayo kanye nokucoleka okuhlukile kwe-hydroxypropyl methyl cellulose, ngaphansi kwenani elifanayo lokwengezwa, ubuncane bomphumela wokugcinwa kwamanzi bungcono.
Ngodaka olumanzi, ukungezwa kwe-cellulose ether HPMC kuphansi kakhulu, kodwa kungathuthukisa kakhulu ukusebenza kokwakhiwa kodaka olumanzi, iyisengezo esiyinhloko esithinta kakhulu ukusebenza kodaka.Ukusebenza kodaka olumanzi kuthonywa kakhulu ukukhethwa okunengqondo kwe-hydroxypropyl methyl cellulose.


Isikhathi sokuthumela: Sep-16-2022