I-HPMC (i-hydroxypropyl methylcellulose) iyisengezo sesakhiwo esibalulekile futhi isetshenziswa kabanzi odakeni lokuzilinganisa. I-self-leveling mortar iyisisetshenziswa esine-fluidity ephezulu nekhono lokuzilinganisa, elivame ukusetshenziswa ekwakhiweni kwaphansi ukwenza indawo ebushelelezi futhi eyisicaba. Kulolu hlelo lokusebenza, indima ye-HPMC ibonakala kakhulu ekuthuthukiseni uketshezi, ukugcinwa kwamanzi, ukunamathela kanye nokusebenza kokwakhiwa kodaka.
1. Izimpawu kanye nendlela yokusebenza ye-HPMC
I-HPMC iyi-ether ye-cellulose engeyona i-ionic enamaqembu e-hydroxyl kanye ne-methoxy esakhiweni sayo samangqamuzana, akhiwa ngokushintsha ama-athomu e-hydrogen kuma-molecule e-cellulose. Izakhiwo zayo eziyinhloko zihlanganisa ukuncibilika kwamanzi okuhle, ukuqina, ukugcinwa kwamanzi, ukuthambisa kanye nekhono elithile lokubopha, okwenza lisetshenziswe kabanzi ezintweni zokwakha.
Kudaka lokuzilinganisa, imiphumela emikhulu ye-HPMC ihlanganisa:
Ukuqina komphumela: I-HPMC inyusa i-viscosity yodaka oluzilinganisa ngokusebenzelana nama-molecule wamanzi ukuze yakhe isixazululo se-colloidal. Lokhu kusiza ukuvimbela ukuhlukaniswa kodaka ngesikhathi sokwakhiwa futhi kuqinisekisa ukufana kwezinto.
Ukugcinwa kwamanzi: I-HPMC inokusebenza okuhle kakhulu kokugcinwa kwamanzi, okunganciphisa ngempumelelo ukulahlekelwa kwamanzi ngesikhathi sokuqina kodaka futhi kwandise isikhathi sokusebenza sikadaka. Lokhu kubaluleke kakhulu odakeni oluzilinganisa ngokwalo, ngoba ukulahleka kwamanzi ngokushesha kakhulu kungase kubangele ukuqhekeka phezulu noma ukuminza ngokungalingani kodaka.
Ukulawulwa kokugeleza: I-HPMC futhi ingagcina i-fluidity enhle nekhono lokuzilinganisa ngokulawula kahle i-rheology yodaka. Lokhu kulawula kungavimbela udaka ekubeni noketshezi oluphakeme kakhulu noma oluphansi kakhulu ngesikhathi sokwakha, ukuqinisekisa ukuqhubeka kahle kwenqubo yokwakha.
Ukusebenza okuthuthukisiwe kokubopha: I-HPMC ingakhuphula amandla okubopha phakathi kodaka oluzilinganisa nendawo ephansi, ithuthukise ukusebenza kwayo kokunamathela, futhi igweme ukumboza, ukuqhekeka nezinye izinkinga ngemva kokwakhiwa.
2. Ukusetshenziswa okuqondile kwe-HPMC kudaka lokuzilinganisa
2.1 Ukuthuthukisa ukusebenza komsebenzi wokwakha
Udaka oluzilinganisa luvamise ukudinga isikhathi eside sokusebenza ngesikhathi sokwakha ukuze kuqinisekiswe ukugeleza okwanele kanye nesikhathi sokukala. Ukugcinwa kwamanzi kwe-HPMC kunganweba isikhathi sokuqala sokusetha udaka, ngaleyo ndlela kuthuthukiswe ubulula bokwakha. Ikakhulukazi ekwakhiweni kwaphansi endaweni enkulu, izisebenzi zokwakha zingaba nesikhathi esengeziwe sokulungisa kanye nezinga.
2.2 Thuthukisa ukusebenza kodaka
Umphumela wokuqina we-HPMC awukwazi nje ukuvimbela ukuhlukaniswa kodaka, kodwa futhi uqinisekise ukusatshalaliswa okufanayo kwezingxenye ze-aggregate kanye nosimende odakeni, ngaleyo ndlela uthuthukise ukusebenza okuphelele kodaka. Ngaphezu kwalokho, i-HPMC ingaphinda yehlise ukukhiqizwa kwamabhamuza ebusweni bodaka oluzilinganisa futhi ithuthukise isiphetho esingaphezulu sikadaka.
2.3 Thuthukisa ukumelana nokuqhekeka
Phakathi nenqubo yokuqina yodaka oluzilinganisa, ukuhwamuka okusheshayo kwamanzi kungase kubangele umthamo wawo unciphe, ngaleyo ndlela kubangele imifantu. I-HPMC inganciphisa ngempumelelo isivinini sokumisa sodaka futhi inciphise amathuba okuqhekeka kokuncipha ngokugcina umswakama. Ngesikhathi esifanayo, ukuguquguquka kwayo nokunamathela kusiza ekuthuthukiseni ukumelana nokuqhekeka kodaka.
3. Umphumela womthamo we-HPMC ekusebenzeni kodaka
Kudaka oluzilinganisa, inani le-HPMC elengeziwe lidinga ukulawulwa ngokuqinile. Ngokuvamile, inani le-HPMC elingeziwe liphakathi kuka-0.1% no-0.5%. Inani elifanele le-HPMC lingathuthukisa kakhulu uketshezi kanye nokugcinwa kwamanzi odaka, kodwa uma umthamo uphezulu kakhulu, kungase kubangele izinkinga ezilandelayo:
Uketshezi oluphansi kakhulu: I-HPMC eningi kakhulu izonciphisa ukugeleza kodaka, ithinte ukusebenza kokwakhiwa, futhi ibangele nokungakwazi ukuzilinganisa.
Isikhathi sokusetha Esandisiwe: I-HPMC eyeqile izonweba isikhathi sokusetha sikadaka futhi ithinte ukuqhubeka kokwakhiwa okulandelayo.
Ngakho-ke, ekusetshenzisweni okungokoqobo, kuyadingeka ukulungisa umthamo we-HPMC ngokuya ngefomula yodaka lokuzilinganisa, izinga lokushisa elizungezile nezinye izici ukuze kuqinisekiswe ukusebenza okuhle kakhulu kokwakha.
4. Umthelela wezinhlobo ezahlukene ze-HPMC ekusebenzeni kodaka
I-HPMC inezinhlobonhlobo zokucaciswa. Izinhlobo ezihlukene ze-HPMC zingase zibe nemiphumela ehlukile ekusebenzeni kodaka oluzilinganisa ngenxa yesisindo sazo samangqamuzana ahlukene namadigri okushintsha. Ngokuvamile, i-HPMC ene-high substitution degree kanye nesisindo esiphezulu se-molecular inemiphumela enamandla yokuqina kanye nokugcinwa kwamanzi, kodwa izinga layo lokuqedwa liyahamba kancane. I-HPMC enedigri ephansi yokushintsha kanye nesisindo esiphansi samangqamuzana incibilika ngokushesha futhi ifanele izikhathi ezidinga ukuqedwa ngokushesha kanye nokuhlangana kwesikhathi esifushane. Ngakho-ke, lapho ukhetha i-HPMC, kuyadingeka ukukhetha izinhlobonhlobo ezifanele ngokuya ngezidingo ezithile zokwakha.
5. Umthelela wezici zemvelo ekusebenzeni kwe-HPMC
Ukugcinwa kwamanzi kanye nomthelela wokujiya we-HPMC kuzothikamezeka imvelo yokwakha. Isibonelo, endaweni yokushisa ephezulu noma enomswakama ophansi, amanzi ahwamuka ngokushesha, futhi umphumela wokugcina amanzi we-HPMC uba obaluleke kakhulu; endaweni enomswakama, inani le-HPMC lidinga ukwehliswa ngokufanelekile ukuze kugwenywe ukumiswa kodaka kancane kakhulu. Ngakho-ke, ohlelweni lwangempela lokwakha, inani kanye nohlobo lwe-HPMC kufanele kulungiswe ngokuvumelana nezimo zemvelo ukuze kuqinisekiswe ukuzinza kodaka lokuzilinganisa.
Njengesengezo esibalulekile kudaka oluzilinganisa, i-HPMC ithuthukisa kakhulu ukusebenza kokwakhiwa kanye nomphumela wokugcina wodaka ngokujiya kwawo, ukugcinwa kwamanzi, ukulungiswa koketshezi kanye nokuthuthukisa ukunamathela. Kodwa-ke, ezinhlelweni zokusebenza zangempela, izinto ezifana nenani, ukuhlukahluka nendawo yokwakha ye-HPMC kudingeka kubhekwe kabanzi ukuze kutholwe umphumela wokwakha ongcono kakhulu. Ngokuthuthuka okuqhubekayo kobuchwepheshe, ukusetshenziswa kwe-HPMC odakeni oluzilinganisa kuzokwanda futhi kuvuthwe.
Isikhathi sokuthumela: Sep-24-2024