1. I-Hydroxypropyl methylcellulose (HPMC)i-non-ionic cellulose ether eyenziwe ngefayibha kakotini yemvelo noma i-pulp yokhuni ngochungechunge lwezinqubo zokucubungula amakhemikhali ezifana ne-alkalization, i-etherification, kanye nokucwengwa. Ngokusho kwe-viscosity yayo, i-HPMC ingahlukaniswa nge-viscosity ephezulu, i-viscosity ephakathi, kanye nemikhiqizo ye-viscosity ephansi. Phakathi kwazo, i-viscosity ephansi i-HPMC isetshenziswa kabanzi emikhakheni eminingi ngenxa yokuncibilika kwayo okuhle kakhulu kwamanzi, impahla yokwenza ifilimu, ukuthambisa, nokuzinza kokuhlakazeka.
2. Izici eziyisisekelo ze-viscosity ephansi ye-HPMC
Ukunyibilika kwamanzi: I-viscosity ephansi I-HPMC incibilika kalula emanzini abandayo futhi ingakha isixazululo se-viscous esisobala noma esishintshashintshayo, kodwa ayincibiliki emanzini ashisayo kanye nezincibilikisi eziningi eziphilayo.
I-viscosity ephansi: Uma iqhathaniswa ne-viscosity ephakathi nendawo nephezulu ye-HPMC, isixazululo sayo sine-viscosity ephansi, ngokuvamile i-5-100mPa · s (2% isixazululo samanzi, 25 ° C).
Ukuzinza: Inokuqina okuhle kwamakhemikhali, iyakwazi ukubekezelela ama-asidi nama-alkali, futhi ingagcina ukusebenza okuzinzile ebangeni le-pH elibanzi.
Isakhiwo sokwenza ifilimu: Ingenza ifilimu efanayo phezu kwama-substrates ahlukene, enezithiyo ezinhle kanye nezakhiwo zokunamathela.
I-Lubricity: Ingasetshenziswa njenge-lubricant ukunciphisa ukungqubuzana nokwenza ngcono ukusebenza kwempahla.
Umsebenzi ongaphezulu: Unamakhono athile okulinganisa kanye nokusabalalisa futhi ungasetshenziswa ezinhlelweni zokusimamisa ukumiswa.
3. Izinkambu zokufaka isicelo ze-HPMC ene-viscosity ephansi
Izinto zokwakha
Udaka ne-putty: Odakeni olomile, udaka oluzilinganisa ngokwalo, nodaka oluplastiwe, i-HPMC ene-viscosity ephansi ingathuthukisa ngempumelelo ukusebenza kokwakhiwa, ithuthukise uketshezi kanye nokuthambisa, ithuthukise ukugcinwa kwamanzi kodaka, futhi ivimbele ukuqhekeka nokuqhekeka.
I-adhesive yethayela: Isetshenziswa njenge-thickener ne-binder ukuze kuthuthukiswe lula ukwakhiwa namandla okubopha.
Ama-coatings nopende: Njenge-thickener and suspension stabilizer, yenza umfaniswano wokumboza, ivimbele ukuvela kwe-pigment sedimentation, futhi ithuthukise izakhiwo zokuxubha nokulinganisa.
Umuthi nokudla
Izisiza zemithi: I-HPMC ene-viscosity ephansi ingasetshenziswa embotsheni yethebhulethi, ejenti elikhishwa isikhathi eside, ukumiswa, kanye nama-capsule filler embonini yezemithi ukuze kuzinze, kuncibilike, futhi kukhishwe kancane.
Izithasiselo zokudla: ezisetshenziswa njengama-thickeners, ama-emulsifiers, iziqinisi ekucutshungulweni kokudla, njengokuthuthukisa ukunambitheka nokuthungwa kwezinto ezibhakwayo, imikhiqizo yobisi namajusi.
Izimonyo nemikhiqizo yokunakekelwa komuntu siqu
Emikhiqizweni yokunakekelwa kwesikhumba, izinto zokuhlanza ubuso, ama-conditioner, ama-gel kanye neminye imikhiqizo, i-HPMC ingasetshenziswa njenge-thickener kanye ne-moisturizer ukuze kuthuthukiswe ukuthungwa komkhiqizo, kwenze kube lula ukusebenzisa nokuthuthukisa ukunethezeka kwesikhumba.
Ceramics kanye papermaking
Embonini ye-ceramic, i-HPMC ingasetshenziswa njenge-lubricant kanye nosizo lokubumba ukuze kuthuthukiswe uketshezi lodaka futhi kuthuthukise amandla omzimba.
Embonini yokwenza iphepha, ingasetshenziselwa ukumboza iphepha ukuze kuthuthukiswe ubushelelezi obungaphezulu nokuvumelana nezimo zokuphrinta kwephepha.
Ezolimo kanye nokuvikelwa kwemvelo
I-viscosity ephansi I-HPMC ingasetshenziswa ekumisweni kwesibulala-zinambuzane ukuze kuthuthukiswe ukuzinza kwezidakamizwa nokwelula isikhathi sokukhululwa.
Ezintweni ezinobungani bemvelo, njengezithasiselo zokwelashwa kwamanzi, izicindezela uthuli, njll., zingathuthukisa ukuzinza kokuhlakazeka futhi zithuthukise umphumela wokusetshenziswa.
4. Ukusetshenziswa nokugcinwa kwe-viscosity ephansi ye-HPMC
Indlela yokusebenzisa
I-viscosity ephansi I-HPMC ivame ukunikezwa ngempushana noma ifomu eliyimbudumbudu futhi ingahlakazwa ngokuqondile emanzini ukuze isetshenziswe.
Ukuze uvimbele ukuhlangana, kunconywa ukuthi wengeze kancane i-HPMC emanzini abandayo, ugovuze ngokulinganayo bese ushisa ukuze uncibilike ukuze uthole umphumela ongcono wokuhlakazeka.
Kufomula yempushana eyomile, ingaxutshwa ngokulinganayo nezinye izinto eziyimpuphu futhi zengezwe emanzini ukuze kuthuthukiswe ukusebenza kahle kokuhlakazeka.
Izidingo zesitoreji
I-HPMC kufanele igcinwe endaweni eyomile, epholile, enomoya omuhle ukuze kugwenywe izinga lokushisa eliphezulu kanye nomswakama.
Gwema ama-oxidants aqinile ukuze uvimbele ukusabela kwamakhemikhali ekubangeleni izinguquko zokusebenza.
Izinga lokushisa lokugcina liyanconywa ukuthi lilawulwe ku-0-30℃ futhi ligweme ukukhanya kwelanga okuqondile ukuze kuqinisekiswe ukuzinza nempilo yesevisi yomkhiqizo.
I-viscosity ephansi ye-hydroxypropyl methylcelluloseidlala indima ebalulekile ezimbonini eziningi ezifana nezinto zokwakha, ezemithi nokudla, izimonyo, ukwenza amaphepha e-ceramic, nokuvikelwa kwemvelo kwezolimo ngenxa yokuncibilika kwamanzi okuhle kakhulu, ukuthambisa, ukugcinwa kwamanzi kanye nezakhiwo zefilimu. Izici zayo eziphansi ze-viscosity ziyenza ifaneleke kakhulu ezimweni zohlelo lokusebenza ezidinga uketshezi, ukuhlakazeka nokuzinza. Ngokuthuthuka okuqhubekayo kobuchwepheshe bezimboni, inkambu yokusetshenziswa kwe-viscosity ephansi ye-HPMC izonwetshwa futhi, futhi izokhombisa amathemba abanzi ekuthuthukiseni ukusebenza komkhiqizo kanye nokwenza kahle izinqubo zokukhiqiza.
Isikhathi sokuthumela: Mar-25-2025