Uyini umehluko phakathi kwe-HPMC ene-S noma ngaphandle kwayo?

1. I-HPMC ihlukaniswe yaba uhlobo olusheshayo kanye nohlobo lohlaka olusheshayo.

Uhlobo lokuhlakazeka okusheshayo lwe-HPMC lunohlamvu S njengesijobelelo. I-Glyoxal kufanele yengezwe ngesikhathi sokukhiqiza.

Uhlobo lokusabalalisa ngokushesha lwe-HPMC alungezi noma yiziphi izinhlamvu, njengokuthi “100000″ kusho ukuthi “i-HPMC eyi-viscosity engu-100000 ehlakaza ngokushesha”.

2. Nge-S noma ngaphandle kwayo, izici zihlukile

I-HPMC ehlakaza ngokushesha ihlakazeka ngokushesha emanzini abandayo bese inyamalala emanzini. Uketshezi alunayo i-viscosity ngalesi sikhathi ngoba i-HPMC ihlakazekile emanzini futhi ayincibiliki ngempela. Ngemva kwemizuzu engaba mibili, i-viscosity ye-liquid ikhula kancane kancane, yenza uketshezi olubonakalayo olubonakalayo. I-colloid ewugqinsi.

I-HPMC esheshayo ingahlakazwa 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. Kumaglue awuketshezi, opende nezinto zokuhlanza, ama-clumps angase avele futhi angasebenziseki.

I-HPMC ehlakaza ngokushesha inezinhlobonhlobo zezinhlelo zokusebenza. Ingasetshenziselwa i-putty powder, udaka, iglue ewuketshezi, upende, nezinto zokuhlanza ngaphandle kokuphikiswa.

indlela yokuqeda

1. Thatha inani elidingekayo lamanzi ashisayo, ulifake esitsheni bese ushisisa libe ngaphezu kuka-80℃, bese ufaka kancane kancane lo mkhiqizo ngokunyakazisa kancane. I-cellulose intanta phezu kwamanzi ekuqaleni, kodwa kancane kancane iyahlakazeka ukuze yenze udaka olufanayo. Pholisa isixazululo ngenkathi uvuselela.

2. Noma shisa i-1/3 noma i-2/3 yamanzi ashisayo ngaphezu kuka-85 ° C, engeza i-cellulose ukuze uthole i-slurry yamanzi ashisayo, bese ufaka inani elisele lamanzi abandayo, ugovuze ngokuqhubekayo, bese upholisa ingxube ewumphumela.

3. I-Cellulose inosayizi omncane we-mesh futhi ikhona njengezinhlayiyana ezincane kumpushana ogoqiwe ngokufanayo. Incibilika ngokushesha lapho ivezwe emanzini ukuze yakhe i-viscosity edingekayo.

4. Faka i-cellulose kancane kancane futhi ngokulinganayo ekamelweni lokushisa, ugovuze ngokuqhubekayo kuze kube yilapho isixazululo esicacile sakha.

Yiziphi izici ezithinta ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose?

Ukugcinwa kwamanzi kwemikhiqizo ye-hydroxypropyl methylcellulose HPMC ngokwayo kuvame ukuthintwa yizinto ezilandelayo:

1. I-Homogeneity ye-cellulose ether HPMC

Amaqembu e-HPMC methoxy kanye ne-hydroxypropoxy asabela ngendlela efanayo asatshalaliswa ngokulinganayo futhi anokugcinwa kwamanzi okuphezulu.

2. I-Cellulose ether HPMC izinga lokushisa elishisayo lejeli

Ukuphakama kwezinga lokushisa kwejeli ye-thermal conductive, izinga lokugcinwa kwamanzi liphakeme; ngokuphambene, izinga lokugcinwa kwamanzi liyancipha.

3. I-viscosity ye-cellulose ether HPMC

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 le-cellulose ether HPMC engeziwe, izinga lokugcinwa kwamanzi liyakhuphuka kanye nomphumela wokugcina amanzi ube ngcono.

Ebangeni lika-0.25-0.6%, izinga lokugcinwa kwamanzi likhuphuka ngokushesha njengoba inani elingeziwe likhuphuka; lapho inani elingeziwe likhuphuka, inkambiso yokwenyuka kwezinga lokugcina amanzi iyancipha.