Udaka oluxutshwe olumanzi luwukusimende, okuhlanganisiwe okuhle, ukuhlangana, amanzi kanye nezinto ezahlukahlukene ezinqunywe ngokuya ngokusebenza. Ngokusho kwengxenye ethile, ngemuva kokulinganiswa futhi kuhlanganiswe esiteshini sokuxuba, kuhanjiswa endaweni yokusebenzisa iloli elixubayo, bese kufakwa ku-Imex elimanzi ligcinwa esitsheni futhi lisetshenziswe ngesikhathi esibekiwe.
I-Hydroxypropyllykyl methylcellulose isetshenziswa njenge-ejenti yokugcina amanzi kanye ne-retarder yodaka kasimende ukwenza udaka lukhule. Kusetshenziswe njenge-binder plaster esopawulisayo, kuthuthukisa ukusakazeka futhi kunwebe isikhathi sokusebenza. Ukusebenza kokugcinwa kwamanzi kwe-hydroxypropyllylylylylyly hpmc kuvimbela ama-slurry kusuka ekuqhekekeni ngenxa yokomisa ngokushesha okukhulu ngemuva kwesicelo, futhi kuthuthukisa amandla ngemuva kokuqina. Ukugcinwa kwamanzi kungukusebenza okubalulekile kwe-hydroxypropyll methylcellulose hpmc, futhi nakho kusebenza ukuthi abakhiqizi abaningi basekhaya abaxuba abayingxubevange banaka. Izici ezithinta umphumela wokugcinwa kwamanzi wodaka oluxutshwe nama-HPMC angeziwe, i-viscosity ye-HPMC, ukubusa kwezinhlayiya, kanye nokushisa kwendawo yokusebenzisa.
Iqhaza elibalulekile le-hydroxypropyllylyly hpmc ngodaka olumanzi olumanzi ikakhulukazi inezici ezintathu, enye ithonya lokungaguquguquki kwamanzi, kanti elinye liyithonya lokuhlangana okuhlanganisiwe, kanti okwesithathu kungukusebenzisana nosimende. Ukutholwa kokugcinwa kwamanzi kwe-cellulose ether kuncike ekufakweni kwamanzi kwesendlalelo sesisekelo, ukwakheka kodaka, ukushuba kongqimba lwesidakamizwa, ukufunwa kwamanzi ngodaka, kanye nesikhathi sokubeka izinto ezibonakalayo. Lapho kuphakama okusobala kwe-hydroxypropylllym methylcellulose, ngcono ukugcinwa kwamanzi.
Izici ezithinta ukugcinwa kwamanzi ngodaka oluxutshwe oluhlanganisa khona i-cellulose ether, inani lokungezelela, inhlawulo yezinhlayiyana kanye nokusebenzisa izinga lokushisa. Lapho kukhuphuka khona i-ver ye-cellulose ether, okungcono ukusebenza kokugcinwa kwamanzi. I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC. Ngomkhiqizo ofanayo, imiphumela ye-visacosity elikalwe ngezindlela ezahlukahlukene ihluke kakhulu, kanti ezinye zize zize ziphindwe kabili umehluko. Ngakho-ke, lapho uqhathanisa i-viscosity, kufanele yenziwe phakathi kwezindlela ezifanayo zokuhlola, kufaka phakathi izinga lokushisa, i-rotor, njll.
Ngokuvamile ukukhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Kodwa-ke, ukukhuphuka kwesisindo kanye nesisindo se-molecular ye-HPMC, ukwehla okuhambisanayo kwe-solubelity yayo kuzoba nomthelela ongemuhle emandleni nasekusebenzeni kokwakha kodaka. Lapho kuphakama i-viscosity, kusobala kakhulu umphumela wokuqina kudaka, kepha akayona ngokuqondile. Lapho esekhuphuka i-viscosity, i-viscous mores owesimende izoba khona, okungukuthi, ngesikhathi sokwakha, kubonakaliswa njengokunamathela ku-scraper kanye nokunamathela okuphezulu kuya engxenyeni engezansi. Kepha akusizi ukwandisa amandla wesakhiwo sodaka olumanzi uqobo. Ngesikhathi sokwakha, ukusebenza kwe-anti-sag akubonakali. Ngokuphambene nalokho, amanye ama-hydroxyproppropyly aguquliwe anokuqonda okuphakathi nendawo okuphansi kunokwenza okuhle kakhulu ekuthuthukiseni amandla ahlelekile ngodaka olumanzi.
Lapho inani lenani le-cellulose ether hpmc elingezwe ngodaka oluxutshwe olumanzi, ngcono ukusebenza kokugcinwa kwamanzi, kanye nokuphakama kwe-viscosity, ukusebenza kangcono kokugcinwa kwamanzi. I-Fechness nayo iyinkomba yokusebenza ebalulekile ye-hydroxypropylylylylylylylyllose.
Ubumsulwa be-hydroxypropylllylyly buye bube nomthelela othile ekugcinweni kwayo kwamanzi. Ngokuvamile, nge-hydroxypropylll methylcellulose enokubonakala okufanayo kepha kunenzuzo ehlukile, i-FING the umphetho umphumela wokugcina amanzi ungcono.
Udaka oluxutshwe olumanzi, inani lokungezwa le-cellulose ether hpmc liphansi kakhulu, kepha lingathuthukisa kakhulu ukusebenza kodaka oluxutshwe ngodaka, futhi luyisengezo esikhulu esithinta ukusebenza kodaka. Ukukhetha okufanele kwe-hydroxyproppropyly efanele i-methylcellulose kunethonya elikhulu ekuthuthukisweni kokusebenza kodaka oluxutshwe olumanzi.
Isikhathi sePosi: Mar-31-2023