Celluloseyog lub ntsiab lus tseem ceeb ntawm cov phab ntsa ntawm cov nroj tsuag, thiab yog qhov dav tshaj plaws thiab muaj ntau tshaj polysaccharide nyob rau hauv cov xwm, suav txog ntau tshaj 50% ntawm cov ntsiab lus carbon hauv lub nceeg vaj cog. Ntawm lawv, cov ntsiab lus cellulose ntawm paj rwb yog ze li ntawm 100%, uas yog lub ntuj ntshiab tshaj plaws cellulose. Hauv cov ntoo, cellulose suav txog 40-50%, thiab muaj 10-30% hemicellulose thiab 20-30% lignin. Cellulose ether yog ib lo lus dav dav rau ntau yam derivatives tau los ntawm ntuj cellulose ua raw khoom los ntawm etherification. Nws yog ib qho khoom tsim tom qab cov pab pawg hydroxyl ntawm cellulose macromolecules yog ib nrab lossis tag nrho hloov los ntawm ether pawg. Muaj cov saw hlau sib txuas thiab cov saw hlau sib txuas hydrogen hauv cellulose macromolecules, uas nyuaj rau yaj hauv dej thiab yuav luag tag nrho cov kuab tshuaj organic, tab sis tom qab etherification, kev taw qhia ntawm ether pawg tuaj yeem txhim kho hydrophilicity thiab ua kom cov dej solubility hauv dej thiab organic solvents. Solubility khoom.
Cellulose ether muaj lub koob npe nrov ntawm "kev lag luam monosodium glutamate". Nws muaj cov khoom zoo heev xws li kev daws thickening, dej solubility zoo, ncua kev kawm lossis latex stability, zaj duab xis tsim, dej tuav, thiab adhesion. Nws tseem tsis muaj tshuaj lom thiab tsis qab, thiab yog siv dav hauv cov khoom siv hauv tsev, tshuaj, khoom noj, textiles, tshuaj niaj hnub, kev tshawb nrhiav roj av, mining, papermaking, polymerization, aerospace thiab ntau lwm yam. Cellulose ether muaj qhov zoo ntawm daim ntawv thov dav, kev siv me me, kev hloov pauv zoo, thiab kev phooj ywg ib puag ncig. Nws tuaj yeem txhim kho thiab ua kom zoo dua cov khoom lag luam hauv thaj tsam ntawm nws qhov sib ntxiv, uas yog qhov tsim nyog rau kev txhim kho kev siv cov peev txheej thiab cov khoom muaj nqis ntxiv. Environmentally friendly additives uas yog ib qho tseem ceeb nyob rau hauv ntau yam teb.
Raws li ionization ntawm cellulose ether, hom kev hloov pauv thiab qhov sib txawv ntawm solubility, cellulose ether tuaj yeem muab faib ua ntau pawg. Raws li ntau hom kev hloov pauv, cellulose ethers tuaj yeem muab faib ua ib leeg ethers thiab sib xyaw ethers. Raws li solubility, cellulose ether tuaj yeem muab faib ua dej-soluble thiab dej-insoluble khoom. Raws li ionization, nws tuaj yeem muab faib ua ionic, non-ionic thiab cov khoom sib xyaw. Ntawm cov dej-soluble cellulose ethers, non-ionic cellulose ethers xws li HPMC muaj qhov kub thiab txias tsis kam thiab ntsev ntau dua li ionic cellulose ethers (CMC).
Cellulose ether hloov kho li cas hauv kev lag luam?
Cellulose ether yog tsim los ntawm refined paj rwb los ntawm alkalization, etherification thiab lwm yam kauj ruam. Cov txheej txheem tsim khoom ntawm qib tshuaj HPMC thiab qib zaub mov HPMC yog qhov zoo ib yam. Piv nrog rau cov khoom siv hauv tsev-qib cellulose ether, cov txheej txheem ntawm cov tshuaj-qib HPMC thiab cov khoom noj-qib HPMC yuav tsum muaj theem etherification, uas yog complex, nyuaj rau kev tswj cov txheej txheem ntau lawm, thiab yuav tsum tau huv huv ntawm cov cuab yeej thiab cov chaw tsim khoom.
Raws li cov ntaub ntawv muab los ntawm Tuam Tshoj Cellulose Industry Association, tag nrho cov peev txheej ntawm cov tuam txhab uas tsis yog-ionic cellulose ether nrog lub peev xwm loj hauv tsev, xws li Hercules Tuam Tsev, Shandong Heda, thiab lwm yam., ntau tshaj 50% ntawm lub teb chaws tag nrho cov peev txheej. Muaj ntau lwm cov tuam txhab me me uas tsis yog-ionic cellulose ether uas muaj peev xwm tsim tau tsawg dua 4,000 tons. Tsuas yog ob peb lub lag luam, feem ntau ntawm lawv tsim cov khoom siv hauv tsev zoo tib yam qib cellulose ethers, nrog rau tag nrho cov peev txheej ntawm 100,000 tons hauv ib xyoos. Vim tsis muaj nyiaj txiag muaj zog, ntau lub lag luam me tsis ua tau raws li cov qauv hauv kev tiv thaiv ib puag ncig kev nqis peev hauv kev kho dej thiab kev kho cov pa roj kom txo tau cov nqi tsim khoom. Raws li lub teb chaws thiab tag nrho cov zej zog them nyiaj ntau thiab ntau dua rau kev tiv thaiv ib puag ncig, cov lag luam hauv kev lag luam uas tsis tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm kev tiv thaiv ib puag ncig yuav maj mam kaw lossis txo kev tsim khoom. Thaum lub sij hawm ntawd, qhov concentration ntawm kuv lub teb chaws cellulose ether manufacturing kev lag luam yuav nce ntxiv.
Txoj cai tiv thaiv ib puag ncig hauv tsev tau dhau los ua nruj dua, thiab cov kev cai nruj tau muab tso rau pem hauv ntej rau kev tiv thaiv ib puag ncig thiab kev nqis peev hauv cov txheej txheem tsim khoom.cellulose ether. High-standard ib puag ncig tiv thaiv kev ntsuas nce tus nqi tsim khoom ntawm cov lag luam thiab tseem tsim ib qho chaw siab rau kev tiv thaiv ib puag ncig. Cov tuam txhab lag luam uas tsis tuaj yeem ua tau raws li kev tiv thaiv ib puag ncig yuav zoo li yuav maj mam kaw lossis txo kev tsim khoom vim tsis ua raws li cov qauv kev tiv thaiv ib puag ncig. Raws li lub tuam txhab cov ntawv tshaj tawm, cov lag luam uas maj mam txo cov khoom lag luam thiab tso tseg vim muaj kev tiv thaiv ib puag ncig tuaj yeem koom nrog tag nrho cov khoom siv ntawm 30,000 tons / xyoo ntawm cov khoom siv hauv tsev zoo tib yam qib cellulose ether, uas yog qhov zoo rau kev nthuav dav ntawm cov lag luam zoo.
Raws li cellulose ether, nws txuas ntxiv mus rau high-end thiab cov khoom muaj nqis ntxiv
Lub sij hawm xa tuaj: Plaub Hlis-25-2024