Inkomba ye-viscosity yehydroxypropyl methylcellulosekuyinkomba ebaluleke kakhulu. I-viscosity ayimeleli ubumsulwa. I-viscose HPMC ye-Cellulase incike kwinqubo yokukhiqiza. Izindawo ezihlukile zokusebenzisa kufanele zikhethe i-cellulose HPMC ene-viscosities ehlukile, hhayi ngaphezulu kwe-viscose HPMC, okungcono! Okulungile kulungile √
Ukulawulwa kwe-Viscosity
1. I-High-Viscosity Hurdysypropyll Methylcellulose ayikwazi ukukhiqiza i-cellulose ephezulu kakhulu ngokuvalwa nokubuyisa nge-nitrogen. Ngokuvamile, ukukhiqizwa kwesethulo esisheshayo eChina ngeke kulawulwe. Kodwa-ke, uma ithuluzi lokulinganisa le-avector oxygen lingafakwa ku-kettle, ukukhiqizwa kwe-viscosity kungalawulwa ngobuciko.
Ukusetshenziswa Kwabahlanganyeli Abahlanganisi
2 Vele, izinga le-polymerization yekotini ecwengekile futhi libalulekile. Uma lokho kungasebenzi, kwenze nge-hydrophobic association. Kunama-ejenti ahlangene asekhaya kulokhu. Hlobo luni lwe-ejenti le-associative olukhethiwe olunethonya elikhulu ekusebenzeni komkhiqizo wokugcina.
Okuqukethwe kwe-hydroxypropyl
I-3. I-oksidin eyinsalela ku-reactor iholela ekunciphiseni kwe-cellulose kanye nokwehliswa kwesisindo se-molecular, kepha umoya-mpilo osele ulinganiselwe. Akunzima ukwenza i-viscosity ephezulu inqobo nje uma ama-molecule aphukile axhunyiwe. Kodwa-ke, izinga lokugcwaliswa kwamanzi lihlobene kakhulu nokuqukethwe kwe-hydroxypropyl. Amanye amafektri afuna kuphela ukunciphisa izindleko nentengo, futhi akazimisele ukwandisa okuqukethwe yi-hydroxypropyl, ngakho-ke ikhwalithi ayikwazi ukufinyelela ezingeni ngemikhiqizo efanayo yakwamanye amazwe.
Ezinye izinto
I-4. Izinga lokugcina lamanzi lomkhiqizo linobudlelwano obuhle ne-hydroxyproppyly, kepha inqubo yonke yokusabela, umphumela we-alkalization, isilinganiso se-methyl chloride kanye ne-propellene oxide kanye ne-alkali . Futhi isilinganiso samanzi sokucwilisa ukotini sinquma ukusebenza komkhiqizo.
Isikhathi sePosi: Oct-19-2022