1. Udaka oluxubile olumanzi: udaka oluxubekile uhlobo lukasimende, i-aggregate emihle, ingxube namanzi, futhi ngokusho kwezakhiwo zezingxenye ezihlukahlukene, ngokwesilinganiso esithile, ngemva kokukalwa esiteshini sokuxuba, kuxutshwe, kuthuthelwe endaweni lapho kusetshenziswa khona iloli, futhi kufakwe eSitolo esikhethekile isitsha bese usebenzisa ingxube emanzi eqediwe ngesikhathi esibekiwe.
2.I-Hydroxypropyl methyl cellulose isetshenziswa njenge-ejenti egcina amanzi kudaka lukasimende kanye ne-retarder yokumpompa udaka. Endabeni ye-gypsum njengesibophezelo sokuthuthukisa isicelo nokwandisa isikhathi sokusebenza, ukugcinwa kwamanzi kwe-HPMC kuvimbela udaka ekuqhekekeni ngokushesha ngemva kokoma, futhi kuthuthukisa amandla ngemva kokuqina. Ukugcinwa kwamanzi kuyimpahla ebalulekile ye-hydroxypropyl methyl cellulose HPMC, futhi kuphinde kube yinto ekhathaza abakhiqizi abaningi basekhaya bemiksi emanzi. Izinto ezithinta umphumela wokugcina amanzi wodaka oluxutshwe okumanzi zihlanganisa inani le-HPMC elingeziwe, i-viscosity ye-HPMC, ukucoleka kwezinhlayiya kanye nezinga lokushisa lendawo esetshenziswayo.
3.Imisebenzi esemqoka ye-hydroxypropyl methyl celluloseI-HPMCodakeni oluxubene olumanzi ikakhulukazi luhlanganisa izici ezintathu, eyodwa iwumthamo omuhle kakhulu wokubamba amanzi, enye ithonya lokungaguquguquki kanye ne-thixotropy yodaka oluxutshwe olumanzi, kanti okwesithathu ukuxhumana nosimende. Ukugcinwa kwamanzi kwe-cellulose ether kuncike esilinganisweni sokumuncwa kwamanzi kwesisekelo, ukwakheka kodaka, ukujiya kongqimba lodaka, isidingo samanzi sodaka, kanye nesikhathi sokusetha. Uma kuphezulu ukucaca kwe-hydroxypropyl methyl cellulose, kuba ngcono ukugcinwa kwamanzi.
4.Izici ezithinta ukugcinwa kwamanzi odaka oluxubene olumanzi zihlanganisa i-cellulose ether viscosity, inani elingeziwe, usayizi wezinhlayiyana nezinga lokushisa. Uma kukhulu i-viscosity ye-cellulose ether, kungcono ukugcina amanzi. I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC. Ngomkhiqizo ofanayo, imiphumela yokusebenzisa izindlela ezahlukene zokulinganisa i-viscosity ihluka kakhulu, kanti abanye baze babe negebe eliphindwe kabili. Ngakho-ke, ukuqhathanisa i-viscosity kufanele kwenziwe ngendlela efanayo yokuhlola, kufaka phakathi izinga lokushisa, i-spindle, njll.
5.Ngokuvamile, ukuphakama kwe-viscosity, ukugcinwa kwamanzi kangcono. 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, i-viscous yodaka olumanzi, ngcono ukusebenza kokwakhiwa, ukusebenza kwe-viscous scraper kanye nokunyuka kokunamathela ku-substrate. Kodwa-ke, ukwanda kwamandla esakhiwo sodaka olumanzi ngokwalo akusizi. Lezi zakhiwo ezimbili azikho ukusebenza okusobala kwe-anti-sag. Ngokuphambene, i-viscosity ethile emaphakathi nephansi kodwa i-hydroxypropyl methyl cellulose eshintshiwe inokusebenza okuhle kakhulu ekuthuthukiseni amandla esakhiwo sodaka olumanzi.
6.Uma sikhulu inani le-cellulose ether engezwe kudaka olumanzi lwe-HPMC, ukugcinwa kwamanzi kangcono, futhi ukuphakama kwe-viscosity, ukugcinwa kwamanzi kungcono. I-Fineness futhi iyinkomba yokusebenza ebalulekile ye-hydroxypropyl methyl cellulose.
7.Ukucoleka kwe-hydroxypropyl methyl cellulose nakho kunomthelela othile ekugcinweni kwayo kwamanzi. Ngokuvamile, ku-hydroxypropyl methyl cellulose ene-viscosity efanayo kanye nokucoleka okuhlukile, ukucoleka kuncane, umphumela wokugcina amanzi ube mncane ngaphansi kwesamba esifanayo sokwengezwa. okungcono.
8.Esimendeni esixutshwe okumanzi, inani elingeziwe le-cellulose ether HPMC liphansi kakhulu, kodwa lingathuthukisa kakhulu ukusebenza kokwakhiwa kodaka olumanzi, futhi liyisithasiselo esiyinhloko esithinta kakhulu ukusebenza kodaka. Ukukhetha okunengqondo kwe-hydroxypropyl methyl cellulose, ukusebenza kodaka olumanzi kuthinteka kakhulu.
Isikhathi sokuthumela: Apr-28-2024