I-Hydroxypropyl methyl cellulose, uyazi?

1.I-HPMCihlukaniswe ngohlobo olusheshayo kanye nohlobo lokusabalala okusheshayo.

Uhlobo lokusabalala okusheshayo lwe-HPMC lune-suffixed ngohlamvu u-S, futhi i-glyoxal kumele ifakwe ngesikhathi senqubo yokukhiqiza.

Uhlobo olusheshayo lwe-HPMC alufaki noma yiziphi izinhlamvu, njengokuthi “100000″ kusho “i-viscosity engu-100000.”

2. Uma kukhona noma kungekho S, izici zihlukile

I-HPMC ehlakazeka ngokushesha ihlakazeka ngokushesha uma ihlangana namanzi abandayo bese inyamalala emanzini. Ngalesi sikhathi, uketshezi alunawo u-viscous, ngoba i-HPMC ihlakazeka emanzini kuphela ngaphandle kokuncibilika kwangempela. Ngemva kwemizuzu engaba mibili, u-viscous walo ketshezi uyanda kancane kancane, wakhe i-colloid ecacile e-viscous Thick.

I-HPMC esheshayo ingasakazwa ngokushesha emanzini ashisayo cishe ku-70°C. Uma izinga lokushisa lehla liye ezingeni lokushisa elithile, i-viscosity izovela 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 nemikhiqizo yokuwasha, kuzoba khona isenzakalo sokuhlukanisa futhi ngeke sisetshenziswe.

Kusakazeka ngokusheshaI-HPMCinezinhlobo eziningi zezicelo futhi ingasetshenziswa ku-putty powder, udaka, i-glue ewuketshezi, upende, kanye nemikhiqizo yokuwasha ngaphandle kokuphikisana.

4. Indlela yokuncibilikisa

4-1. Thatha inani elidingekayo lamanzi ashisayo, uwafake esitsheni bese uwafudumeza ngaphezu kuka-80°C, bese ufaka kancane kancane lo mkhiqizo ngaphansi kokuxubha kancane. I-cellulose iyantanta phezu kwamanzi ekuqaleni, kodwa kancane kancane ihlakazeka ukuze yakhe i-slurry efanayo. Isixazululo sapholiswa ngenkathi sixubha.

4-2. Ngaphandle kwalokho, 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, qhubeka uvuselela, bese upholisa ingxube ephumayo.

4-3. I-mesh ye-cellulose ilungile, futhi ikhona njengezinhlayiya ezincane ngazinye ku-powder evuselelwe ngokulinganayo, futhi iyancibilika ngokushesha uma ihlangana namanzi ukuze yakhe i-viscosity edingekayo.

4-4. Faka kancane kancane i-cellulose ekamelweni lokushisa, bese uqhubeka uvuselela kuze kube yilapho kwakheka isixazululo esibonakalayo.

5. Yiziphi izici ezithinta ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose?

5-1. Ukulingana kwe-cellulose ether HPMC

I-HPMC, i-methoxyl kanye ne-hydroxypropoxyl ezisabela ngokulinganayo zisatshalaliswa ngokulinganayo, futhi izinga lokugcina amanzi liphezulu.

5-2. Izinga lokushisa lejeli elishisayo le-cellulose ether HPMC

Uma izinga lokushisa lejeli lokushisa liphezulu, izinga lokugcina amanzi liphezulu; uma kungenjalo, izinga lokugcina amanzi liphansi.

5-3. I-Cellulose Ether HPMC Viscosity

Uma i-viscosity ye-HPMC ikhula, izinga lokugcina amanzi nalo liyakhula; lapho i-viscosity ifinyelela ezingeni elithile, ukwanda kwesilinganiso sokugcina amanzi kuvame ukuba mnene.

6.Inani lokwengeza le-cellulose ether HPMC

Inani elikhulu le-cellulose etherI-HPMCNgaphezu kwalokho, izinga lokugcina amanzi liyanda futhi umphumela wokugcina amanzi uba ngcono.

Ebangeni elingu-0.25-0.6%, izinga lokugcina amanzi landa ngokushesha ngokwanda kwenani lokwengeza; lapho inani lokwengeza landa kakhulu, ukuthambekela kokukhula kwesilinganiso sokugcina amanzi kwehla.