Umthamo wokugcina amanzi we-hydroxypropyl methylcellulose uncike kokuqukethwe kwe-hydroxypropyl. Ngaphansi kwezimo ezifanayo, umthamo wokugcina amanzi we-hydroxypropyl methylcellulose ephezulu unamandla, futhi okuqukethwe kwe-methoxy kokuqukethwe okufanayo kwe-hydroxypropyl kuncishiswa ngokufanele. . Uma okuqukethwe kwe-hydroxypropyl methylcellulose kuphakeme, kulapho i-viscosity yayo iba nkulu khona, ngakho-ke lapho ukhetha umkhiqizo, kufanele ukhethe umkhiqizo ofanelana nawe ngokwenhloso yomkhiqizo.
Izinga lokushisa nezinye izici zinomthelela ekugcinweni kwamanzi kwe-hydroxypropyl methylcellulose.
Izinga lokushisa lejeli elishisayo:
I-cellulose ether HPMC inezinga lokushisa eliphezulu lokufudumala kanye nokugcinwa kwamanzi okuhle; ngokuphambene nalokho, ayinawo amanzi amaningi.
Ukuqaqamba kwe-cellulose ether HPMC:
Uma i-viscosity ye-HPMC ikhula, ukugcinwa kwamanzi kwayo nakho kuyanda; lapho i-viscosity ikhula ngezinga elithile, ukwanda kokugcinwa kwamanzi kuyancipha.
I-cellulose ether HPMC iyafana:
I-HPMC inokusabela okufanayo, ukusatshalaliswa okufanayo kwe-methoxyl ne-hydroxypropoxyl, futhi inokugcinwa kwamanzi okuhle.
Isikali se-cellulose ether HPMC:
Uma umthamo uphezulu, izinga lokugcina amanzi liyanda futhi umphumela wokugcina amanzi usobala kakhulu.
Uma inani lokwengeza lingu-0.25 ~ 0.6%, izinga lokugcina amanzi likhuphuka ngokushesha njengoba inani lokwengeza likhuphuka; lapho inani lokwengeza likhuphuka kakhulu, umkhuba wokwanda kwesilinganiso sokugcina amanzi uyehla.
Ngamafuphi, ukugcinwa kwamanzi kwe-HPMC kuhlobene nezici ezifana nokushisa kanye ne-viscosity, kanti ukugcinwa kwamanzi kwayo kuhlobene nenani le-hydroxypropyl methylcellulose engeziwe. Lapho inani le-hydroxypropyl methylcellulose lifinyelela inani elithile, ukusebenza kwayo kokugcinwa kwamanzi kufinyelela ibhalansi.
Isikhathi sokuthunyelwe: Feb-23-2023