Ntau yam tseem ceeb cuam tshuam rau cov dej tuav ntawm hydroxypropyl methylcellulose

Hydroxypropyl methylcellulose (HPMC) yog ib qho uas tsis yog-ionic cellulose ether ua los ntawm ntuj polymer khoom cellulose los ntawm ntau cov txheej txheem tshuaj. Lawv yog cov tsis muaj ntxhiab, tsis qab thiab tsis muaj kuab paug dawb hmoov uas swells mus rau hauv ib qho ntshiab los yog me ntsis cloudy colloidal tov nyob rau hauv dej txias. Nws muaj thickening, khi, dispersing, emulsifying, zaj duab xis-forming, suspending, adsorbing, gelling, nto active, noo noo-retaining thiab tiv thaiv colloid zog. Hydroxypropyl methyl cellulose thiab methyl cellulose tuaj yeem siv rau hauv cov khoom siv hauv tsev, xim kev lag luam, hluavtaws cob, kev lag luam ceramic, tshuaj, khoom noj khoom haus, textile, kev ua liaj ua teb, tshuaj niaj hnub thiab lwm yam lag luam.

Kev tuav dej ntawm hydroxypropyl methylcellulose HPMC cov khoom nws tus kheej feem ntau cuam tshuam los ntawm cov hauv qab no:

1. Tus nqi ntawm hydroxypropyl methylcellulose HPMC ntxiv Qhov ntau dua ntawm cellulose ether HPMC ntxiv, qhov siab dua cov dej tuav thiab cov dej tuav tau zoo dua. Nyob rau hauv qhov ntau ntawm 0.25-0.6% ntxiv, cov dej tuav tus nqi nce sai nrog qhov nce ntawm qhov sib ntxiv; Thaum cov nyiaj ntxiv ntxiv ntxiv, qhov kev nce ntawm cov dej tuav tus nqi qeeb.

2. HPMC viscosity ntawm hydroxypropyl methylcellulose Thaum lub viscosity ntawm HPMC nce, cov dej tuav tus nqi kuj nce; Thaum lub viscosity nce mus txog ib theem, qhov nce hauv dej tuav tus nqi yuav maj mam.

3. Hydroxypropyl methylcellulose HPMC thermal gel kub High thermal gel kub, siab dej tuav tus nqi; txwv tsis pub, tsis tshua muaj dej tuav tus nqi.

4. Hydroxypropyl methylcellulose HPMC homogeneity HPMC nrog cov tshuaj tiv thaiv zoo ib yam, methoxyl thiab hydroxypropoxyl yog sib npaug, thiab cov dej tuav tau siab.