Cellulose etheryog ib lo lus sau rau ntau yam derivatives tau los ntawm natural cellulose (refined paj rwb thiab ntoo pulp, thiab lwm yam) los ntawm etherification.Nws yog cov khoom tsim los ntawm ib nrab lossis ua tiav kev hloov pauv ntawm pawg hydroxyl hauv cellulose macromolecules los ntawm ether pawg, thiab yog cov khoom siv qis qis ntawm cellulose.Tom qab etherification, cellulose yog soluble nyob rau hauv dej, dilute alkali daws, thiab organic solvents, thiab muaj thermoplastic zog.Muaj ntau hom cellulose ethers, dav siv hauv kev lag luam xws li kev tsim kho, cement, txheej, tshuaj, khoom noj, roj av, tshuaj niaj hnub, textiles, papermaking, thiab hluav taws xob cov khoom.Raws li tus naj npawb ntawm cov hloov pauv, nws tuaj yeem muab faib ua ib leeg ethers thiab sib xyaw ethers, thiab raws li ionization, nws tuaj yeem muab faib ua ionic cellulose ethers thiab tsis yog ionic cellulose ethers.Tam sim no, cov txheej txheem tsim khoom ntawm ionic cellulose ether ionic cov khoom yog cov paub tab, tsim tau yooj yim, thiab tus nqi kuj tsawg.Kev lag luam thaiv kev lag luam yog qhov tsawg, thiab nws tsuas yog siv rau hauv cov khoom noj khoom haus additives, textile additives, kev lag luam tshuaj niaj hnub, thiab lwm yam. Nws yog cov khoom tseem ceeb uas tsim nyob rau hauv kev ua lag luam.
Tam sim no, lub ntsiabcellulose ethersNyob rau hauv lub ntiaj teb no yog CMC, HPMC, MC, HEC, thiab lwm yam. Ntawm lawv, CMC muaj ntau ntau lawm, accounting rau ib nrab ntawm lub ntiaj teb no ntau lawm, thaum HPMC thiab MC account rau txog 33% ntawm lub ntiaj teb no thov, thiab HEC account rau kwv yees li 13% ntawm lub ntiaj teb ua lag luam.Qhov tseem ceeb tshaj plaws ntawm kev siv Carboxymethyl cellulose (CMC) yog cov tshuaj ntxuav tes, suav txog 22% ntawm cov khoom lag luam qis.Lwm cov khoom siv feem ntau yog siv hauv cov khoom siv hauv tsev, zaub mov thiab tshuaj.
Post lub sij hawm: Lub Xya hli ntuj-13-2023