Inkomba ye-viscosity ye-hydroxypropyl methylcellulose iyinkomba ebaluleke kakhulu.I-viscosity akumeleli ubumsulwa.I-viscosity ye-cellulose HPMC incike kunqubo yokukhiqiza.Izindawo ezihlukene zokusebenzisa kufanele zikhethe i-cellulose HPMC ene-viscosity ehlukene, hhayi ukuphakama kwe-viscosity ye-cellulose HPMC, kungcono!Okufanelekile kulungile.
I-Viscosity Control
1. Ekukhiqizweni kwe-high-viscosity hydroxypropyl methylcellulose, i-vacuuming kanye nokufakwa esikhundleni kwe-nitrogen akukwazi ukukhiqiza i-cellulose ephezulu kakhulu.Ngokuvamile, ukukhiqizwa kwe-cellulose ephezulu-viscosity e-China akukwazi ukulawulwa.Kodwa-ke, uma imitha ye-oxygen yokulandelela ingafakwa ku-kettle, ukukhiqizwa kwe-viscosity yayo kungalawulwa ngokwenziwa.
Ukusetshenziswa kwe-ejenti yenhlangano
2. Ngaphezu kwalokho, uma kucatshangelwa isivinini sokushintshwa kwe-nitrogen, kulula ukukhiqiza imikhiqizo ene-viscosity ephezulu kungakhathaliseki ukuthi uhlelo lungenawo umoya kangakanani.Vele, izinga le-polymerization likakotini ocolisisiwe nalo libalulekile.Uma lokho kungasebenzi, kwenze nge-hydrophobic association.Kukhona ama-agent enhlangano kule ndawo e-China.Hlobo luni lwe-ejenti yenhlangano okufanele uyikhethe enethonya elikhulu ekusebenzeni komkhiqizo wokugcina.
Okuqukethwe kwe-Hydroxypropyl
3. I-oksijeni esele ku-reactor iholela ekulimazeni kwe-cellulose kanye nesisindo esiphansi samangqamuzana.Kodwa-ke, uma i-oksijeni esele ilinganiselwe, inqobo nje uma ama-molecule aphukile exhunywa kabusha, akunzima ukwenza i-viscosity ephezulu.Kodwa-ke, izinga lokugcwala lihlobene kakhulu nokuqukethwe kwe-hydroxypropyl.Ezinye izimboni zifuna kuphela ukunciphisa izindleko nentengo, kodwa azizimisele ukwandisa okuqukethwe kwe-hydroxypropyl, ngakho ikhwalithi ayikwazi ukufinyelela izinga lemikhiqizo efanayo yangaphandle.
ezinye izici
4. Izinga lokugcinwa kwamanzi lomkhiqizo linobudlelwane obuhle ne-hydroxypropyl, kodwa futhi linquma izinga lokugcinwa kwamanzi, umphumela we-alkalization, isilinganiso se-methyl chloride ne-propylene oxide, kanye nokugxila kwe-alkali kuyo yonke inqubo yokusabela.Kokubili isilinganiso samanzi nokotini ocolisisiwe kunquma ukusebenza komkhiqizo.
Isikhathi sokuthumela: Apr-03-2023