Hydroxyethyl methyl cellulose

Hydroxyethyl methyl cellulose (HEMC) tau npaj los ntawm kev qhia txog cov tshuaj ethylene oxide hloov mus rau hauv cov methyl cellulose (MC). Nws cov ntsev tiv thaiv tau zoo dua li ntawm cov polymer uas tsis tau hloov kho, thiab qhov ntsuas kub ntawm methyl hydroxyethyl cellulose ntau dua li ntawm methyl cellulose.

.Qhov zoo

1. Txheem: Cov hmoov dawb dawb lossis zoo sib xws, tsis muaj cov ntawv xov xwm siv tshuab, tsis muaj ntxhiab thiab tsis qab

2. Gel kub (℃) ： 60-90

3. Cov dej ntsiab lus （Wt%）: ≤5.0

4. Cov hmoov tshauv （Wt%）: ≤5.0

5.HP: 5.0-8.0

6. Thooj: ≥80 Mesh

7. Cov Viscosity （mPa.s, 2% daws teeb meem, 20 ± 0.2））: 100000-20000

.Muaj cov qauv kev ua haujlwm

1. Solubility: qauv H hauv HEMC tuaj yeem yaj tau hauv cov dej txias thiab dej kub, thaum tus qauv L tsuas tuaj yeem yaj nyob rau hauv cov dej txias, thaum HEMC tsis yog soluble hauv feem ntau cov kuab tshuaj organic. Qhov saum npoo kho HEMC yog qhov dej tawg txias hauv dej txias thiab tsis ua agglomerate. Txawm li cas los xij, nws tuaj yeem yuav yaj sai los ntawm kev kho nws tus nqi pH rau 8-10

2. PH stability: pH tus nqi nyob rau hauv thaj tsam ntawm 2-12 viscosity hloov yog me me, dhau ntawm qhov no ntau viscosity txo

3. HEMC muaj cov yam ntxwv ntawm kev ua kom tuab, ncua kev kawm, cais tawm, txhaws, emulsification, tsim cov zaj duab xis thiab tuav dej, thiab nws cov dej tuav tau muaj zog dua li ntawm methylcellulose. Viscosity stability, mildew tsis kam thiab dispersion zoo dua li hydroxyethyl cellulose

Ⅲ. Kev siv thiab kev ceev faj

HEMC yog dav siv hauv dej pleev xim txheej txheej, kev tsim kho thiab cov ntaub ntawv hauv tsev, luam ntawv number case, roj av, thiab lwm yam

Ⅳ. Pob thiab chaw cia khoom

1.Cov khoom no muaj cov ntaub ntawv muaj kev nyab xeeb cov ntaub ntawv thiab daim ntawv tso cai thauj mus los kev nyab xeeb cov ntaub ntawv

2.Qhov khoom no tau ntim hauv 25 kg kraft ntawv thiab ntawv yas ntim cov hnab zaj duab xis

3.Xav hauv qhov chaw qhuav, them sai sai rau cov dej noo-pov thawj