Sodium Carboxyl methyl Cellulose (Carboxyl methyl Cellulose), hu ua CMC, yog cellulose ether, carboxyl methyl derivative ntawm cellulose, tseem hu ua cellulose gum, yog cov pos hniav ionic cellulose tseem ceeb tshaj plaws. Nws tau raug tsim tawm hauv Tebchaws Europe thaum ntxov xyoo 1910 thiab tau siv los ua ib qho colloid thiab binder. Xyoo 1947, nws raug tso cai siv los ua cov khoom siv ntxiv hauv kev lag luam ua zaub mov thiab muaj cov nyhuv thickening. Cov tshuaj aqueous ntawm sodium carboxymethyl cellulose muaj cov haujlwm ntawm thickening, bonding, tsim zaj duab xis, tiv thaiv nplaum, noo noo retention, emulsification thiab ncua kev kawm ntawv, thiab lwm yam. Cov khoom tseem ceeb yog qib roj av, qib zaub mov, qib tshuaj txhua hnub, qib tshuaj thiab roj teeb qib CMC. Ntawm lawv, cov roj teeb-qib CMC yog siv los ua cov ntaub ntawv rau lithium roj teeb electrode, thiab nws cov kev xav tau kev lag luam tau loj hlob sai nyob rau xyoo tas los no nrog kev nce ntawm kev lag luam tsheb tshiab hauv tsev.

Txheej txheem technology

Cov txheej txheem ntau lawm ntawm sodium carboxymethyl cellulose muaj xws li dej nruab nrab txoj kev, tsis tshua muaj kuab tshuaj, slurry method (ntau hom hnyav) thiab lwm yam. Cov ntaub ntawv tseem ceeb yog refined cellulose, thiab qhov sib txawv ntawm txoj kev aqueous thiab ob lub tom kawg yog tias "tsis muaj cov organic hnyav xws li cawv ua cov tshuaj tiv thaiv nruab nrab hauv cov txheej txheem ntawm alkalization thiab etherification". Cov txheej txheem ntawm cov dej nruab nrab txoj kev tsis yog siab, tab sis qhov purity thiab hloov uniformity ntawm cov khoom tsim tsis siab, thiab tsuas yog siv tau rau qhov tsawg kawg nkaus thov teb. Cov khoom siv purity siab kuj yuav tsum tau ua kom zoo dua qub, ua kom zoo dua CMC muaj qhov thaiv siab - cov cuab yeej siv qib siab thiab cov txheej txheem nce ntxiv yuav ua rau tus nqi nce ntxiv, slurry txoj kev yog txheej txheem ntau dua.

Kev lag luam xwm txheej

CMC kev lag luam tau ze li ib puas xyoo, cov txheej txheem thev naus laus zis yog qhov paub tab thiab tsis muaj kev tawg loj rau ntau xyoo, belongs rau cov khoom siv tshuaj, tsis yog rau kev mloog ntawm cov tuam txhab tshuaj loj, tam sim no txawv teb chaws cov tuam txhab CMC muaj Herklex (Ashland), kev sib tw Lu, Nyiv ntawv thiab lwm yam. Kev lag luam hauv CMC tau nkag mus rau hauv txoj kev loj hlob sai tom qab xyoo 1998. Tshwj xeeb, thaum pib ntawm lub xyoo pua 21st, qhov kev thov rau sodium carboxymethyl cellulose hauv kev lag luam hauv tsev thiab thoob ntiaj teb yog kev vam meej, thiab qhov nruab nrab txhua xyoo kev loj hlob ntawm domestic CMC noj nruab nrab ntawm 2006 thiab 2010 tau mus txog 17%, uas tau spawned ntau carboxymethyl cellulose ntawm cov khoom siv yooj yim thiab carboxymethyl cellulose. lub ncov, lawv cov txheej txheem yog ntau tib yam. Qhov sib txawv ntawm cov tuam txhab yog cov khoom ruaj khov ntawm cov khoom siv pheej yig, cov nqi ua haujlwm zoo ib puag ncig thiab cov khoom zoo.

Los ntawm qhov kev xav ntawm kev lag luam nkag mus rau lub sijhawm, kev lag luam nkag mus rau xyoo 1998, txuas ntxiv mus txog xyoo 2016, thiab mus txog qhov siab tshaj plaws hauv 2014. Ntawm lawv, 2001-2009 yog lub sijhawm kub ntawm kev txhim kho kev lag luam hauv tsev CMC, cov lag luam tshiab txuas ntxiv mus, cov lag luam txawv teb chaws tau nkag mus. Los ntawm 2010 mus rau 2016, lub pace thiab tus naj npawb ntawm cov lag luam tau hloov, nrog rau ob qho tib si lub peev nyiaj npliag lub sij hawm thiab kev nqis peev siab tshaj plaws nyob rau hauv 2014. Nyob rau hauv 2016, txawm hais tias lub domestic export ntim ntawm carboxymethyl cellulose thiab nws cov khoom ntsev nce tsis tu ncua, qhov nruab nrab export nqi poob mus rau ib tug historic tsawg. Tom qab xyoo 2017, kev nqis peev hauv kev lag luam hauv tsev CMC tau txias heev, nrog tsuas yog ob lub lag luam tshiab. Lawv cov cuab yeej technology thiab cov khoom muaj kev sib tw ntau dua. Piv txwv li, Hebi Fangrui Chemical tau tsim los ntawm absorbing thawj DuPont Danisco (Zhangjiagang) hydrophilic colloid tuam txhab cov cuab yeej thiab lwm yam technologies thiab cov neeg ua haujlwm ntau lawm. Fujian Meiyarui Cov Khoom Siv Tshiab Tshiab tsuas yog tsim cov roj teeb qib cellulose ether cov khoom, rau Ningde lub sij hawm lithium roj teeb ua cov khoom txhawb nqa.

xaus

1, lub peev xwm contraction ntawm domestic sodium carboxymethyl cellulose kev lag luam, lub hom phiaj vim hais tias ntawm kev poob qis hauv downstream thov kev lag luam loj hlob, zoo li cov khoom noj khoom haus kev lag luam tawm tom qab 2017 mus rau lub sij hawm qis-ceev loj hlob. Lub saturation ntawm kev thov nyob rau hauv cov tsoos daim ntawv thov tej yam kev mob yuav ua rau tus nqi sib tw thiab tshem tawm lub peev xwm ntau lawm. Qhov tshwm sim ntawm qhov kev thov tshiab yuav ua rau muaj kev lag luam tshiab thiab muaj peev xwm tsim tau tshiab, xws li Fujian Meiyarui New Materials Company thiab Shandong Lihong Baoguan Cellulose Co., LTD., uas tau nthuav dav cov kab ntau lawm ntawm cov khoom siv roj teeb. 2, tus qauv zoo tshaj plaws ntawm kev txhim kho kev lag luam yog kev siv thev naus laus zis txuas ntxiv, lossi tsim cov kev xav tau tshiab, muaj kev sib txawv ntawm cov neeg sib tw. Txawm li cas los xij, kev txhim kho teeb meem ntawm kev lag luam ib txwm muaj yog tias cov txheej txheem thev naus laus zis tau nres, qhov kev thov kev loj hlob ruaj khov, thiab thaum ntau thiab ntau tus neeg sib tw converge ntawm tib theem kev, kev sib tw homogenization tau qhib. Thaum cov khoom siv thev naus laus zis tsis tuaj yeem rov ua dua, lwm yam kev lag luam yuav tsum tau tsim. 3. Kev rov ua dua ntawm lwm yam kev lag luam, xws li cov peev txheej, kev ua haujlwm, thaj av thiab ib puag ncig ib puag ncig, tso siab rau ntawm tes tsis pom ntawm kev ua lag luam ntev dhau lawm, thiab yuav tsum tau tso siab rau ntawm tes pom ntawm txoj cai: kev tswj hwm ib puag ncig; Txo cov nqi xa tawm se rov qab; Txhim kho cov qauv khoom zoo; Txhim kho qhov pib nkag rau lub peev xwm tsim khoom tshiab.