Ukuze kusetshenziswe udaka olumanzi,i-hydroxypropyl methylcelluloseinezakhiwo ezinhle zokujiya, ingakhulisa kakhulu ikhono lokubopha phakathi kodaka olumanzi kanye nesendlalelo sesisekelo, futhi ingathuthukisa nokusebenza kodaka okulwa nokuwa, ngakho-ke isetshenziswa kabanzi ekuplasteni i-mortar, uhlelo lokuvikela udonga lwangaphandle kanye nodaka lokubopha izitini.
Ukuze kube nomphumela wokuqina kwe-cellulose ether, ingakhulisa futhi ukulingana kanye nekhono lokulwa nokuhlakazeka kwezinto ezisanda kuhlanganiswa ezisekelwe kusimende, futhi ingavimbela nezinkinga zokuhlukanisa, ukuhlukaniswa kanye nokopha embotsheni nasekhonkrithini. Ingasetshenziswa kukhonkrithi eqiniswe yi-Fiber, kukhonkrithi engaphansi kwamanzi kanye nekhonkrithi ezizicindezelayo.
I-hydroxypropyl methylcellulose ingakhulisa ukusebenza okuqinile kwezinto ezisekelwe kusimende. Lokhu kusebenza kuvela kakhulu ekuqineni kwesisombululo se-cellulose ether. Ngokuvamile, inkomba yezinombolo ye-viscosity isetshenziselwa ukwahlulela ukuqineni kwesisombululo se-cellulose ether, kuyilapho i-cellulose Ukuqineni kwe-ether kuvame ukubhekisela ekugxileni okuthile kwesisombululo se-cellulose ether, ngokuvamile okungu-2%, ekushiseni okucacisiwe, njengama-degrees angu-20 kanye nesilinganiso sokujikeleza, kusetshenziswa ithuluzi lokulinganisa elicacisiwe, njenge-viscometer ejikelezayo. Inani le-viscosity.
Ukuqina kungenye yezindlela ezibalulekile zokwahlulela ukusebenza kwe-cellulose ether. Uma i-viscosity yesisombululo se-hydroxypropyl methylcellulose iphakeme, i-viscosity yezinto ezisekelwe kusimende iba ngcono, futhi ukusebenza kokunamathela okungcono ku-substrate kuba ngcono. Ngesikhathi esifanayo, inakho. Amandla okulwa nokuwa kanye nekhono lokulwa nokuhlakazeka kunamandla, kodwa uma i-viscosity yayo iphakeme kakhulu, izothinta ukusebenza kokugeleza kanye nokusebenza kwezinto ezisekelwe kusimende.
Yiziphi izici ezizothinta ukujiya kwe-hydroxypropyl methylcellulose? Ngokuyinhloko kuncike kulezi zizathu ezilandelayo.
1. Uma izinga lokupholimitha kwe-cellulose ether ye-hydroxypropyl methylcellulose liphakeme, isisindo sayo sama-molecule sikhulu, okuholela ekuqineni okuphezulu kwesisombululo sayo samanzi.
2. Uma inani noma ukuhlushwa kwe-cellulose ether kuphakeme, i-viscosity yesisombululo sayo samanzi izoba phezulu. Kodwa-ke, kufanele kuthathwe ukunakekelwa ukuze kukhethwe inani elifanele le-cellulose ether uma uyisebenzisa, ikakhulukazi ukuze ugweme inani eliphakeme kakhulu le-cellulose ether. Kuzothinta ukusebenza kwe-mortar kanye nekhonkrithi.
3. Njengezinye izinto eziningi eziwuketshezi, i-viscosity yesisombululo se-cellulose ether izoncipha ngokwanda kwezinga lokushisa, futhi uma izinga lokushisa le-cellulose ether liphakeme, izinga lokushisa liyancipha. Uma umthelela uba mkhulu.
4. Isixazululo se-cellulose ether ngokuvamile siyi-pseudoplastic, esinezici zokunciphisa ukucheba. Uma izinga lokucheba lilikhulu ngesikhathi sokuhlolwa, kulapho i-viscosity iba ncane khona.
Ukuhlangana kwe-mortar kuzoncishiswa ngenxa yesenzo samandla angaphandle, okuwusizo futhi ekwakhiweni kokuklwebha kwe-mortar, okuholela ekuhlanganeni okuhle kanye nokusebenza kahle kwe-mortar ngesikhathi esifanayo. Kodwa-ke, umai-cellulose etherIsixazululo sinomthamo ophezulu Uma i-viscosity iphansi futhi i-viscosity incane, izobonisa izici zoketshezi lwe-Newtonian. Uma umthamo ukhuphuka, isixazululo sizobonisa kancane kancane izici zoketshezi lwe-pseudoplastic, futhi uma umthamo uphakeme, i-pseudoplasticity izobonakala kakhulu.
Isikhathi sokuthunyelwe: Ephreli-28-2024