Uyini umehluko phakathii-hydroxypropyl methylcellulose(HPMC) nge-S noma ngaphandle kwayo?
1. I-HPMC ihlukaniswe yaba uhlobo olusheshayo kanye nohlobo lokuhlakazeka okusheshayo
Uhlobo lokusabalalisa ngokushesha lwe-HPMC luxhunywe ngohlamvu S. Ngesikhathi senqubo yokukhiqiza, i-glyoxal kufanele yengezwe.
Uhlobo olusheshayo lwe-HPMC alufaki noma yiziphi izinhlamvu, njengokuthi “100000″ "i-100000 viscosity fast dispersion type HPMC".
2. Nge-S noma ngaphandle kwayo, izici zihlukile
I-HPMC ehlakaza ngokushesha ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazeka emanzini kuphela, futhi akukho ukuchithwa kwangempela. Cishe ngemva kwemizuzu emibili, i-viscosity yoketshezi ikhula kancane kancane, yakhe uketshezi olunamathelayo olusobala. I-colloid ewugqinsi.
I-HPMC esheshayo ingahlakazeka ngokushesha emanzini ashisayo cishe ku-70°C. Lapho izinga lokushisa lehla lifinyelela ezingeni elithile lokushisa, i-viscosity ibonakala kancane kuze kube yilapho kwakheka i-viscous colloid esobala.
3. Nge-S noma ngaphandle kwayo, inhloso ihlukile
I-HPMC esheshayo ingasetshenziswa kuphela ku-putty powder nodaka. Kuma-glues e-liquid, okokugqoka kanye nezinto zokuhlanza, i-clumping izokwenzeka futhi ayikwazi ukusetshenziswa.
I-HPMC ehlakaza ngokushesha inezinhlobonhlobo zezinhlelo zokusebenza. Ingasetshenziswa ku-putty powder, udaka, iglue ewuketshezi, upende, nemikhiqizo yokuwasha ngaphandle kokuphikiswa.
Indlela yokuhlakaza
1. Thatha inani elidingekayo lamanzi ashisayo, ulifake esitsheni bese ushisisa libe ngaphezu kuka-80°C, bese wengeza kancane kancane lo mkhiqizo ngaphansi kokuvuselela kancane. I-cellulose intanta emanzini ekuqaleni, kodwa kancane kancane ihlakazeka ukuze yenze udaka olufanayo. Pholisa isixazululo ngokugqugquzela.
2. Noma shisa i-1/3 noma i-2/3 yamanzi ashisayo ibe ngaphezu kuka-85 ° C, engeza i-cellulose ukuze uthole i-slurry yamanzi ashisayo, bese ufaka inani elisele lamanzi abandayo, qhubeka uvuselela, futhi upholise ingxube ewumphumela.
3. I-Cellulose inenombolo ye-mesh ecishe icoleke kahle, futhi ikhona njengezinhlayiyana ezincane kumpushana onyakaziswa ngokufanayo, futhi incibilika ngokushesha lapho ihlangana namanzi ukuze yakhe i-viscosity edingekayo.
4. Faka i-cellulose kancane kancane futhi ngokulinganayo ekamelweni lokushisa, futhi uqhubeke uvuselela phakathi nenqubo yokwengeza kuze kube yilapho kwakhiwa isixazululo esisobala.
Yiziphi izici ezithinta ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose?
Ukugcinwa kwamanzi komkhiqizo we-hydroxypropyl methylcellulose HPMC ngokwawo kuvame ukuthintwa yizinto ezilandelayo:
1. I-Cellulose ether HPMC homogeneity
I-HPMC esabela ngokufanayo inokusabalalisa okufanayo kwamaqembu e-methoxy kanye ne-hydroxypropoxy nokugcinwa kwamanzi okuphezulu.
2. I-Cellulose ether HPMC izinga lokushisa elishisayo lejeli
Lapho izinga lokushisa lejeli elishisayo liphakeme, izinga lokugcinwa kwamanzi liphakeme; uma kungenjalo, izinga lokugcinwa kwamanzi liphansi.
3. I-Cellulose ether HPMC viscosity
Lapho i-viscosity ye-HPMC ikhula, izinga lokugcinwa kwamanzi liyanda; lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwezinga lokugcinwa kwamanzi kuvame ukuba mnene.
Inani elingeziwe le-Cellulose ether HPMC
Uma likhulu inani elingeziwe le-cellulose ether HPMC, likhuphuka izinga lokugcinwa kwamanzi kanye nomphumela wokugcina amanzi ube ngcono.
Ebangeni lika-0.25-0.6%, izinga lokugcinwa kwamanzi likhuphuka ngokushesha ngokunyuka kwenani elingeziwe; lapho inani elingeziwe likhuphuka, inkambiso ekhulayo yezinga lokugcinwa kwamanzi iba kancane.
Isikhathi sokuthumela: Oct-17-2022