I-Soluble hydroxypropyl methyl cellulose (HPMC) iwuhlobo lwe-non-ionic cellulose ether, eyenziwe nge-polymer cellulose yemvelo ngochungechunge lokucutshungulwa kwamakhemikhali.I-Hypromellose (HPMC) iyimpushana emhlophe encibilika emanzini abandayo ukuze yakhe isixazululo esisobala, esibonakalayo.Inezici zokuqina, ukunamathela, ukuhlakazeka, i-emulsification, ukwakheka kwefilimu, ukumiswa, i-adsorption, i-gelation, umsebenzi ongaphezulu, ukugcinwa kwamanzi nokuvikelwa kwe-colloid.Ukugcinwa kwamanzi kuyimpahla ebalulekile ye-hypromellose HPMC, ephinde ikhathazwe ngabakhiqizi abaningi bakadaka oluxutshwe okumanzi e-China.Izici ezithinta ukugcinwa kwamanzi kodaka oluxutshwe okumanzi zifaka inani le-HPMC, i-viscosity ye-HPMC, usayizi wezinhlayiyana nezinga lokushisa lendawo ezungezile.I-Hypromellose HPMC idlala indima ebalulekile odakeni ezicini ezintathu: ukugcinwa kwayo kahle kwamanzi, umthelela wayo ekubambisaneni kodaka kanye ne-thixotropy, kanye nokusebenzisana kwayo nosimende.Umsebenzi wokugcina amanzi we-cellulose ether uncike ekumunceni kwamanzi kwesisekelo, ukwakheka kodaka, ukujiya kodaka, isidingo samanzi sodaka kanye nesikhathi sokusetha sento yokumisa.Uma i-hypromellose isobala kakhulu, kuba ngcono ukugcinwa kwamanzi.
Izici ezithinta ukugcinwa kwamanzi kodaka zihlanganisa i-viscosity ye-cellulose ether, inani elingeziwe, ubuhle bezinhlayiyana kanye nezinga lokushisa lesevisi.Uma kukhulu i-viscosity ye-cellulose ether, kungcono ukugcina amanzi.I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC.Ngomkhiqizo ofanayo, okukalwa ngezindlela ezihlukene zemiphumela ye-viscosity ziyahlukahluka kakhulu, kanti ezinye ziphinda kabili umehluko.Ngakho-ke, uma uqhathanisa i-viscosity, kufanele ibe ngendlela efanayo yokuhlola phakathi, kufaka phakathi izinga lokushisa, i-rotor nokunye.Ngokuvamile, ukuphakama kwe-viscosity, kuba ngcono umphumela wokugcina amanzi.Kodwa-ke, ukuphakama kwe-viscosity, ukuphakama kwesisindo se-molecule ye-HPMC, ukuncibilika kwe-HPMC kuzokwehla ngokufanele, okunomthelela omubi emandleni nasekusebenzeni kokwakhiwa kodaka.Ukuphakama kwe-viscosity, ngcono umphumela wokujiya wodaka, kodwa awulingani nobuhlobo.Ukuphakama kwe-viscosity, i-viscous eyengeziwe yodaka olumanzi luyoba, kokubili ukwakhiwa, ukusebenza kwe-sticing scraper kanye nokunamathela okuphezulu ku-substrate.Kodwa akusizi ukwandisa amandla esakhiwo sodaka olumanzi ngokwalo.Kokubili ukwakhiwa, ukusebenza kokusebenza kwe-anti-sagging.Ngokuphambene, enye i-hypromellose eguquliwe ene-viscosity ephansi kuya emaphakathi ibonise ukusebenza okuhle kakhulu ekuthuthukiseni amandla esakhiwo sezinsimbi ezimanzi.Ukuphakama kokuqukethwe kwe-cellulose ether odakeni, kuba ngcono indawo ebamba amanzi, i-viscosity ephezulu futhi ingcono indawo ebamba amanzi.Ukuqina futhi kuyinkomba yokusebenza ebalulekile ye-hypromellose.Ukucoleka kwe-hypromellose nakho kunomthelela othile kumthamo wayo wokubamba amanzi.Ngokuvamile, ku-hypromellose ene-viscosity efanayo kodwa ukucoleka okuhlukile, ngaphansi kwesamba esifanayo sokwengezwa, ukucoleka kokuqina, kuba ngcono umphumela wokugcina amanzi.
Odakeni oluxubile olumanzi, ukungezwa kwe-cellulose ether HPMC kuphansi kakhulu, kodwa kungathuthukisa ukusebenza kokwakhiwa kodaka oluxutshwe okumanzi.Ukukhethwa okufanele kwe-hypromellose kunomthelela omkhulu ekusebenzeni kodaka oluxubekile olumanzi.
Isikhathi sokuthumela: Jul-27-2023