Daim Ntawv Thov thiab Kev Npaj ntawm Hydroxyethy Cellulose Hemc

Hydroxyethy cellulose hemc tuaj yeem siv raws li cov neeg tiv thaiv kev tiv thaiv colloid, emulsifier thiab dispersant vim nws cov kev daws teeb meem saum toj. Ib qho piv txwv ntawm nws daim ntawv thov yog raws li hauv qab no: cov kev cuam tshuam ntawm hydroxyethy cellulose ntawm cov khoom ntawm cov cement. Hydroxyether methylulose yog ntxhiab tsw qab, tsis muaj hmoov, tsis muaj hmoov nyob rau hauv dej txias kom tsim ib qho ntshiab, daws. Nws muaj cov khoom siv ntawm thickening, khi, emulsifying, zaj duab xis, nquag, tuav dej noo thiab tiv thaiv colloids. Vim yog cov kev ua haujlwm saum npoo hlau ntawm cov kua aqueous, nws tuaj yeem siv ua tus neeg sawv cev ntawm Colloid tiv thaiv, ib qho emulsifier thiab dispersant. Hydroxyelyl metric poluous kua aqueous kua txiv Muaj zoo hydrophilicity thiab yog lub siab-efficiency dej-tuav tus neeg sawv cev.

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Ib txoj kev rau kev npaj hydroxyethyl methyl metyl medulose, cov qauv muaj siv cov khoom siv reded thiab ethylene oxide ua ib tug neeg sawv cev los npaj hydroxyethyl methyl cellulose. Cov ntaub ntawv raw rau kev npaj hydroxyethy cellulose tau npaj nyob rau hauv seem hydroxide, 80-49 ntu ntawm methyl chloride, thiab 16-19 qhov chaw ntawm cov acetic acid; Cov kauj ruam tshwj xeeb yog:

Thawj kauj ruam, nyob rau hauv lub reactor, ntxiv toluene thiab isopropanol sib tov, dej, thiab socium hydroxide, kom ua kom sov li 60 ~ 80 ℃, yuav raug txiav 20 ~ 40 feeb;

Qhov thib ob kauj ruam, alkalization: txias cov ntaub ntawv saum toj no rau 30 ~ 50 ℃ evac to after after after after after after,, after after after after after after after after,

Qhov thib peb, etherification: lub alkalization ua tiav, tus reactor tau tawm mus rau 0.07mpa, ethylene oxide thiab metyl chloride tau ntxiv, thiab khaws cia rau 30 ~ 50 feeb; Thawj theem ntawm ethermalation: 40 ~ 60 ~ (0 teev, 1.0 teev, lub siab yog tswj hwm ntawm 0.150.3MPA; Qhov thib ob ntawm ethermalation: 60 ~ 90 ℃, 2.0 ~ 2.5 teev, lub siab yog tswj hwm ntawm 0.40.8mpa;

Cov kauj ruam thib 4, Nuj Nqis: Ntxiv Metered Glacial Acatitation Acid Ua tiav, kub thiab cov dej nag lossis daus, thiab cov khoom siv nag lossis daus

Cov kauj ruam thib tsib, centrifugal ntxuav: cov khoom siv nyob rau hauv cov kauj ruam thib plaub yog centrifuged los ntawm kab rov tav uas tau hloov nrog dej ntxhua khaub ncaws ua ntej, thiab cov khoom siv tau ntxuav;

Lub kauj ruam rau, centrifugal kom qhuav: cov khoom ntxuav tau thauj mus rau hauv lub tshuab ziab khaub ncaws, cov khoom siv qhuav ntawm 150-170 ° C, thiab cov khoom qhuav yog pulverized thiab ntim.

Piv nrog cov cellulige uas twb muaj lawm ete zog ua kom muaj zog, thiab muaj kev tiv thaiv mildyl Yuav siv tau es tsis txhob lwm tus kws pab neeg cellulose.