1. I-HPMC ihlukaniswe ngohlobo olusheshayo kanye nohlobo lokuhlakazeka okusheshayo.
Uhlobo lokusabalala okusheshayo lwe-HPMC lune-suffix kahlamvu u-S. I-Glyoxal kufanele ifakwe ngesikhathi senqubo yokukhiqiza.
Uhlobo lokuhlakazeka okusheshayo lwe-HPMC alufaki izinhlamvu, njengokuthi “100000″ kusho ukuthi “i-100000 viscosity ehlakazeka ngokushesha ye-HPMC”.
2. Uma kukhona noma kungekho S, izici zihlukile
I-HPMC ehlakazeka ngokushesha ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Uketshezi alunawo u-viscosity ngalesi sikhathi ngoba i-HPMC ihlakazeka kuphela emanzini futhi ayincibiliki ngempela. Ngemva kwemizuzu engaba mibili, u-viscosity woketshezi uyanda kancane kancane, wakhe uketshezi olubonakalayo olu-viscous. I-colloid ejiyile.
I-HPMC esheshayo ingasakazwa ngokushesha emanzini ashisayo cishe ku-70°C. Lapho izinga lokushisa lehla liye ezingeni lokushisa elithile, i-viscosity ibonakala kancane kancane kuze kube yilapho kwakheka i-colloid ecacile egobile.
3. Uma une-S noma ungenayo, injongo ihlukile
I-HPMC esheshayo ingasetshenziswa kuphela ku-putty powder kanye nodaka. Ku-glue ewuketshezi, upende kanye nezinto zokuhlanza, kungase kube nama-clumps futhi angasetshenziswa.
I-HPMC ehlakazeka ngokushesha inezinhlobo eziningi zezicelo. Ingasetshenziswa ku-putty powder, udoti, i-glue ewuketshezi, upende, kanye nezinto zokuhlanza ngaphandle kokuphikisana.
indlela yokuncibilikisa
1. Thatha inani elidingekayo lamanzi ashisayo, uwafake esitsheni bese uwashisa ngaphezu kuka-80°C, bese ufaka kancane kancane lo mkhiqizo ngokuxubha kancane. I-cellulose iyantanta phezu kwamanzi ekuqaleni, kodwa kancane kancane ihlakazeke ukuze yakhe i-slurry efanayo. Pholisa isixazululo ngenkathi uxubha.
2. Noma fudumeza ingxenye yesithathu noma ingxenye yesithathu yamanzi ashisayo ibe ngaphezu kwama-85°C, engeza i-cellulose ukuze uthole i-slurry yamanzi ashisayo, bese ufaka inani elisele lamanzi abandayo, uvuselele njalo, bese upholisa ingxube ephumayo.
3. I-Cellulose inosayizi we-mesh omncane futhi ikhona njengezinhlayiya ezincane ezilodwa ku-powder evuselelwe ngokulinganayo. Iyancibilika ngokushesha uma ivezwa emanzini ukuze yakhe i-viscosity edingekayo.
4. Faka i-cellulose kancane kancane nangokulinganayo ekamelweni lokushisa, uvuselela njalo kuze kube yilapho kuvela isixazululo esicacile.
Yiziphi izici ezithinta ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose?
Ukugcinwa kwamanzi kwemikhiqizo ye-hydroxypropyl methylcellulose HPMC ngokwayo kuvame ukuthintwa yizici ezilandelayo:
1. Ukufana kwe-cellulose ether HPMC
Amaqembu e-HPMC methoxy kanye ne-hydroxypropoxy asabela ngokulinganayo asatshalaliswa ngokulinganayo futhi anokugcinwa kwamanzi okuphezulu.
2. Ukushisa kwejeli lokushisa le-cellulose ether HPMC
Uma izinga lokushisa lejeli eliqhuba ukushisa liphezulu, izinga lokugcina amanzi liphezulu; ngakolunye uhlangothi, izinga lokugcina amanzi liphansi.
3. Ukuqina kwe-cellulose ether HPMC
Uma i-viscosity ye-HPMC ikhula, izinga lokugcina amanzi nalo liyakhula; lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwesilinganiso sokugcina amanzi kuvame ukuba mnene.
Inani lokwengeza le-HPMC le-cellulose ether
Uma inani elikhulu le-cellulose ether HPMC lingeziwe, izinga lokugcina amanzi liyanda futhi umphumela wokugcina amanzi uba ngcono.
Ebangeni elingu-0.25-0.6%, izinga lokugcina amanzi likhula ngokushesha njengoba inani lokwengeza likhula; lapho inani lokwengeza likhula ngokwengeziwe, ukuthambekela kokwanda kwezinga lokugcina amanzi kuyehla.
Isikhathi sokuthunyelwe: Feb-06-2024