Kukhudlwana ukubonakala kweI-HPMCI-Hydroxypropyl methyl cellulose, ngcono ukusebenza kokugcinwa kwamanzi. I-Viscosity iyipharamitha ebalulekile yokusebenza kwe-HPMC. Njengamanje, abakhiqizi be-HPMC abahlukene basebenzisa izindlela ezahlukahlukene nezinsimbi ukunquma i-viscosity ye-HPMC. Izindlela eziphambili zinguHake I-Rotovisko, i-HOPPLER, ubuSbhelohde neBrookfield, njll.
Ngomkhiqizo ofanayo, imiphumela ye-viscosity elinganiswa ngezindlela ezahlukahlukene ihluke kakhulu, okunye kukhona umehluko owodwa. Ngakho-ke, lapho uqhathanisa i-viscosity, kufanele yenziwe phakathi kwendlela efanayo yokuhlola, kufaka phakathi izinga lokushisa, i-rotor, njll.
Ngobukhulu bezinhlayiyana, abahle kakhulu, okungcono ukugcinwa kwamanzi. Izinhlayiya ezinkulu ze-cellulose ether zithintana namanzi, ingaphezulu lincibilika futhi zakha ijeli ukuyosonga izinto zokuvimbela ama-molecule wamanzi ekuqhubekeni nasekuchithweni kwezixazululo ezinodaka noma Agglomerate. I-solubility ye-cellulose ether ingenye yezinto ukukhetha i-cellulose ether. I-Fechness nayo iyinkomba yokusebenza ebalulekile ye-methyl celtulose ether. I-MC ye-DRY DATERAR idinga i-powder, okuqukethwe kwamanzi okuphansi, kanye nobungcweti be-20% ~ 60% usayizi wezinhlayiyana okungaphansi kwe-63um. Ubuhle buthinta i-solubility yeI-HPMCI-Hydroxypropylm methyl cellulose ether. I-Coarse MC imvamisa i-granular futhi ingachithwa kalula emanzini ngaphandle kokuqothuka, kepha ijubane lokuchithwa lihamba kancane, ngakho-ke alilungele ukusetshenziswa ngodaka olomile. Ku-fortar elomile, i-MC ihlakazeka phakathi kokuhlanganisa, ama-filler amahle nezinto zokwehla ezifana nesimende, futhi kuphela impuphu elungile ngokwanele ongakugwema ukuqina kwe-methyl cellulose ether lapho uxubana namanzi. Lapho i-MC ingeza amanzi ukuncibilikisa i-agglomerate, kunzima kakhulu ukuyihlakaza futhi uyiyeke. I-MC ene-degness ebuthakathaka hhayi kuphela imfucumfucu, kodwa futhi yehlisa namandla endawo kadaka. Lapho kwakhiwa udaka olomile endaweni enkulu, ijubane lokuphaka kodaka olomile lwasendaweni luncishiswa kakhulu, okuholela ekuqhekekeni okubangelwa isikhathi sokwelashwa esihlukile. Ngodaka lokufafaza ngomshini, ngenxa yesikhathi esifushane sokuxuba, ubuciko buphakeme.
Ngokuvamile ukukhuluma, ukukhuphuka okuphezulu, kungcono ukugcinwa kwamanzi. Kodwa-ke, ukukhuphuka okuphezulu, isisindo se-molecular se-MC, futhi ukusebenza kokuchithwa kuzokwehla ngokugcwele, okunomthelela ongemuhle emandleni nasekusebenzeni koMunga. Lapho kuphakama i-viscosity, kusobala ukuthi kube khona umphumela wokuqina wodaka, kepha awunakulingana nobudlelwano. Lapho esekhuphuka khona i-viscosity, udaka olumanzi luzoba lunamathele ngokwengeziwe, wokwakha wokwakha, ukusebenza kwesikhafu esinamathelayo kanye nokunamathela okuphezulu kuya kokuqukethwe kwesisekelo. Kepha akusizi ukwandisa amandla wesakhiwo sodaka olumanzi. Ngesikhathi sokwakha, ukusebenza kwe-anti-sag akubonakali. Ngokuphambene nalokho, ukuhlakanipha okuphansi kodwa okulungiselelwe i-methyl cellulose kanye nokusebenza okuhle kakhulu ekuthuthukiseni amandla wesakhiwo sodaka olumanzi.
I-cellulose ether eyengeziwe efakwa kudaka, ukusebenza okungcono kokugcinwa kwamanzi, okuphezulu kwe-viscosity, ukusebenza okungcono kokugcinwa kwamanzi.
I-HPMC ebuthakathaka futhi inomthelela othile ekugcinweni kwayo kwamanzi, ngokuvamile ekhuluma, ngokusobala okufanayo kanye nobunzima obuhlukile be-methyl cellulose ether, esimweni senani elifanayo, umphumela wokugcina amanzi ungcono.
Ukugcinwa kwamanzi kwe-HPMC kuhlobene nokushisa kokusetshenziswa, kanye nokugcinwa kwamanzi kwe-methyl cellulose ether kuncipha ngokuvuka kwamazinga okushisa. Kepha ohlelweni lwangempela lwezinto ezibonakalayo, izindawo eziningi zodaka omile zivame ukuba sezinga lokushisa eliphakeme (ephakeme kunezinqumo ezingama-40) ngaphansi kwesimo sokwakhiwa kwe-substrate eshisayo, njengokuhlaselwa ehlobo kodonga lwangaphandle lwe-putty putty, okuvame ukusheshisa ukuqina kwe usimende nowomile wodaka lukhuni. Ukwehla kwamanani okugcina amanzi kuholela emveni osobala wokuthi ukukhiqizwa nokuphikiswa kokuqhekeka kuyathinteka. Kulesi simo, ukunciphisa ithonya lezinto zokushisa liba ligxeke ikakhulukazi. Yize isengezo se-methyl hydroxyethylsyl ether kubhekwa njengento phambili yentuthuko yezobuchwepheshe, ukuncika kwayo kumazinga okushisa kuzoholela ekunciphiseni kwezindawo zodaka lomuntu owomile. Ngisho nokunyuka kwe-methyl hydroxyethyyl cellulose dosage (ifomula yehlobo), ukumelana nokwakha nokuqhekeka namanje akwazanga ukufeza izidingo zokusebenzisa. Ngokusebenzisa okuthile okukhethekile kwe-MC, njengokukhuphula izinga lokuthezeka, umphumela wokugcina amanzi we-MC angagcina umphumela ongcono ngaphansi kokushisa okuphezulu, ukuze akwazi ukuhlinzeka ukusebenza okungcono ngaphansi kwezimo ezinzima.
Isikhathi Sokuposa: Meyi-18-2022