Dab tsi yog cov ntau yam ntawm cellulose ether? Cov yam ntxwv yog dab tsi?

Cov kws qhia txog cellulose yog muaj ntau pab pawg polymers tau muab los ntawm cellulose, lub ntuj polysaccharide pom hauv cov nroj tsuag. Lawv tau siv dav hauv ntau yam kev lag luam, suav nrog kev tsim kho, chaw muag tshuaj, khoom noj, thiab kev saib xyuas tus kheej thiab versatility. Ntawm no yog qee cov ntau yam ntawm cellulose ether thiab lawv cov yam ntxwv:

1. Methyl Cellulose (MC):
   • Cov yam ntxwv:
     • Methyl cellulose yog dej-soluble polymer muab tau los ntawm cellulose los ntawm kev kho nws nrog methyl chloride.
     • Nws yog feem ntau tsis muaj ntxhiab, tsis muaj qab hau, thiab tsis muaj tshuaj lom, ua kom haum rau kev siv hauv cov ntawv thov ntau.
     • MC Cov khoom pov thawj kev ua kom zoo dua qub cov khoom siv, ua rau muaj kev ntxiv rau cov cement-raws li cov txiv neej ua ke, gypsum-based plasters, thiab pobzeb cov nplaum.
     • Nws txhim kho kev ua haujlwm, cov nplaum, thiab qhib lub sijhawm hauv cov ntaub ntawv tsim kho, tso cai rau kev thov kom yooj yim dua thiab ua tau zoo dua.
     • Methyl cellulose feem ntau siv los ua tus neeg sawv cev tuab, stabilizer, thiab emulsifier hauv cov khoom noj khoom haus, cov tshuaj, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce.
2. Hydroxyethyl cellulose (HEC):
   • Cov yam ntxwv:
     • Hydroxyethyl cellulose yog tsim los ntawm kev rov ua cellulose nrog ethylene oxide los qhia hydroxyethyl pawg mus rau lub cellulose cellebone.
     • Nws yog soluble nyob rau hauv dej txias thiab cov ntaub ntawv ntshiab, viscous kev daws teeb meem nrog cov khoom siv dej zoo.
     • HEC muaj feem ntau siv los ua cov tuab dua, rheology kho tshuab, thiab cov yeeb yaj kiab-ua yeeb yaj kiab, suav nrog cov xim av, cov khoom lag luam nplaum, thiab cov khoom siv saib xyuas tus kheej.
     • Hauv cov ntaub ntawv tsim kho, HEC suav daws, sag tiv taus, thiab coheseniven, ua rau nws siv nyob rau hauv cov xis thiab gypsum-raws li cov qauv.
     • HEC tseem muab Pseudoplastic Flow tus cwj pwm, lub ntsiab lus nws viscosity txo qis nyob rau hauv shear kev nyuaj siab, muab kev pab yooj yim thiab kis tau yooj yim.
3. HydroxyPropyyl methyl cellulose (HPMC):
   • Cov yam ntxwv:
     • HydroxyPropy cellulose yog lub cellulose ether ua los ntawm kev qhia hydroxypropyl thiab methyl pawg mus rau lub cellulose cellebone.
     • Nws ua rau cov khoom ua kom zoo ib yam li ob lub methyl cellulose thiab hydrothethyl cellulose, suav nrog cov dej solubility, ua yeeb yaj kiab ua yeeb yam, thiab dej tuav.
     • HPMC tau siv dav siv hauv cov khoom tsim kho xws li cov nplaum sib xyaw ua ke los txhim kho kev ua haujlwm, kev ua kom zoo nkauj, thiab xwm yeem.
     • Nws muab qhov zoo tshaj plaws thickening, khi, thiab lub tshuab roj hmab nyob rau hauv aqueous systems thiab tau tshaj lwm tus ntxiv siv hauv kev tsim qauv.
     • HPMC kuj tseem siv rau hauv cov tshuaj, khoom noj khoom haus, thiab cov kev saib xyuas tus kheej raws li lub stabilizer, tsis raug tus neeg sawv cev, thiab viscosity hloov kho.
4. Carboxymethyl cellulose (CMC):
   • Cov yam ntxwv:
     • Carboxymethyl cellulose yog lub cellulose ether derived los ntawm cellulose los ntawm kev kho nws cov roj monhoporoacetic acid los ua ib pawg carboxymethyl.
     • Nws yog soluble hauv dej thiab cov ntaub ntawv ntshiab, viscous cov kev daws teeb meem uas muaj cov khoom siv ua kom zoo, ruaj khov thiab dej khaws cia.
     • CMC feem ntau siv ua cov tuab, phau ntawv, thiab rheology kho hauv ntau yam lag luam, suav nrog cov khoom noj, cov chaw muag tshuaj, textiles, thiab ntawv.
     • Hauv cov khoom siv tsim kho, CMC qee zaum siv los ua cov dej hauv cov dej hauv cement thiab grouthed, txawm hais tias nws muaj nqi ntau dua thiab qis dua nrog cov tshuaj kaj siab.
     • CMC kuj tseem siv nyob rau hauv cov kws ua tshuaj ua yeeb yam raws li kev ncua tus neeg sawv cev, ntsiav tshuaj binder, thiab tswj kev tawm khoom matrix.

Cov no yog qee cov muaj ntau yam ntau yam ntawm cellulose ether, txhua qhov muab cov khoom tshwj xeeb thiab cov txiaj ntsig rau cov ntawv thov sib txawv. Thaum xaiv lub cellulose ether rau ib daim ntawv thov tshwj xeeb, cov khoom siv viscosity, sib xyaw nrog lwm cov kev sib ntxiv, thiab cov yam ntxwv yam ntxim nyiam, thiab cov yam ntxwv zoo nrog rau kev txiav txim siab.