Dab tsi yog ntau yam ntawm Cellulose ether?

Cellulose ethers yog ib pab pawg neeg sib txawv ntawm cov polymers muab los ntawm cellulose, ib tug natural polysaccharide pom nyob rau hauv cov nroj tsuag. Lawv tau siv dav hauv ntau yam lag luam, suav nrog kev tsim kho, tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev saib xyuas tus kheej, vim lawv cov khoom tshwj xeeb thiab ntau yam. Nov yog qee yam ntawm ntau hom cellulose ether:

1. Methyl Cellulose (MC):
   • Methyl cellulose yog tsim los ntawm kev kho cellulose nrog methyl chloride los qhia methyl pawg mus rau hauv cov pob txha cellulose.
   • Nws yog soluble nyob rau hauv dej txias thiab cov ntaub ntawv ntshiab, viscous daws.
   • MC yog siv los ua cov thickener, binder, thiab stabilizer nyob rau hauv ntau yam kev siv, nrog rau cov ntaub ntawv tsim kho (xws li, cement-based mortars, gypsum-based plasters), khoom noj khoom haus, tshuaj, thiab cov khoom tu tus kheej.
2. Hydroxyethyl Cellulose (HEC):
   • Hydroxyethyl cellulose yog synthesized los ntawm reacting cellulose nrog ethylene oxide los qhia hydroxyethyl pawg mus rau cellulose qaum.
   • Nws yog soluble nyob rau hauv dej txias thiab cov ntaub ntawv ntshiab, viscous daws nrog zoo heev dej tuav cov khoom.
   • HEC feem ntau yog siv los ua cov thickener, rheology modifier, thiab zaj duab xis-tsim tus neeg sawv cev hauv cov xim, cov nplaum, cov khoom tu tus kheej, thiab cov tshuaj.
3. Hydroxypropyl Methyl Cellulose (HPMC):
   • Hydroxypropyl methyl cellulose yog tsim los ntawm kev qhia hydroxypropyl thiab methyl pawg mus rau hauv cov pob txha cellulose.
   • Nws nthuav tawm cov khoom zoo ib yam li ob qho tib si methyl cellulose thiab hydroxyethyl cellulose, nrog rau cov dej solubility, muaj peev xwm ua zaj duab xis, thiab tuav dej.
   • HPMC yog siv dav hauv cov ntaub ntawv tsim kho (xws li, cov nplaum nplaum, cov cement-based renders, self-leveling compounds), nrog rau hauv cov tshuaj, khoom noj khoom haus, thiab cov khoom tu tus kheej.
4. Carboxymethyl Cellulose (CMC):
   • Carboxymethyl cellulose yog muab los ntawm cellulose los ntawm kev kho nws nrog sodium hydroxide thiab monochloroacetic acid los qhia carboxymethyl pawg.
   • Nws yog soluble nyob rau hauv dej thiab cov ntaub ntawv ntshiab, viscous daws nrog zoo heev thickening, stabilizing, thiab dej tuav cov khoom.
   • CMC feem ntau yog siv los ua cov thickener, binder, thiab rheology modifier hauv cov khoom noj, tshuaj, textiles, ntawv, thiab qee yam khoom siv.
5. Ethyl Cellulose (EC):
   • Ethyl cellulose yog tsim los ntawm reacting cellulose nrog ethyl chloride los qhia ethyl pawg mus rau cov pob txha cellulose.
   • Nws yog insoluble hauv dej tab sis soluble hauv cov organic solvents xws li ethanol thiab chloroform.
   • EC feem ntau yog siv los ua tus neeg sawv cev ua yeeb yaj kiab, khi, thiab cov khoom siv txheej txheej hauv cov tshuaj, khoom noj khoom haus, tshuaj pleev ib ce, thiab kev siv hauv kev lag luam.

Cov no yog qee qhov feem ntau siv ntau hom cellulose ether, txhua qhov muab cov khoom tshwj xeeb thiab cov txiaj ntsig rau kev siv sib txawv. Lwm yam tshwj xeeb cellulose ethers kuj tseem muaj nyob, haum rau cov kev cai tshwj xeeb hauv ntau qhov kev lag luam.