Sodium carboxymethyl cellulose (CMC)yog ib qho carboxymethylated derivative ntawm cellulose, tseem hu ua cellulose gum, thiab yog qhov tseem ceeb tshaj plaws ionic cellulose gum. CMC feem ntau yog ib qho anionic polymer compound tau los ntawm kev cuam tshuam cov cellulose ntuj nrog caustic alkali thiab monochloroacetic acid. Lub molecular hnyav ntawm cov compound yog los ntawm kaum tawm lab mus rau ntau lab.
【Khoom】 Hmoov dawb, tsis muaj ntxhiab, yaj tau hauv dej los ua cov kua viscosity siab, tsis yaj hauv ethanol thiab lwm cov kuab tshuaj.
【Daim Ntawv Thov】Nws muaj cov haujlwm ntawm kev ncua thiab emulsification, kev sib koom ua ke zoo thiab kev tiv thaiv ntsev, thiab yog hu ua "kev lag luam monosodium glutamate", uas yog siv dav.
Kev npaj ntawm CMC
Raws li qhov sib txawv ntawm etherification medium, kev tsim khoom lag luam ntawm CMC tuaj yeem muab faib ua ob pawg: txoj kev siv dej thiab txoj kev siv cov kuab tshuaj. Txoj kev siv dej ua cov tshuaj tiv thaiv hu ua txoj kev dej-borne, uas yog siv los tsim cov alkaline medium thiab cov qib qis CMC; txoj kev siv cov kuab tshuaj organic ua cov tshuaj tiv thaiv hu ua txoj kev yaj, uas yog qhov tsim nyog rau kev tsim cov CMC nruab nrab thiab qib siab. Ob qho tib si ntawm cov tshuaj tiv thaiv no tau ua tiav hauv lub tshuab kneader, uas yog cov txheej txheem kneading thiab yog txoj hauv kev tseem ceeb rau kev tsim CMC tam sim no.
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txoj kev siv dej
Txoj kev dej-borne yog ib qho txheej txheem tsim khoom lag luam ua ntej, uas yog los cuam tshuam alkali cellulose nrog tus neeg sawv cev etherifying hauv qhov xwm txheej ntawm alkali dawb thiab dej. Thaum lub sijhawm alkalization thiab etherification txheej txheem, tsis muaj cov khoom siv organic hauv lub kaw lus. Cov khoom siv xav tau ntawm txoj kev dej-borne yog qhov yooj yim, nrog kev nqis peev tsawg dua thiab tus nqi qis. Qhov tsis zoo yog tias tsis muaj ntau cov kua nruab nrab, thiab cua sov tsim los ntawm cov tshuaj tiv thaiv ua rau qhov kub nce ntxiv, uas ua rau qhov ceev ntawm cov tshuaj tiv thaiv sab, ua rau muaj kev ua haujlwm etherification qis thiab cov khoom tsis zoo. Txoj kev no yog siv los npaj cov khoom CMC nruab nrab thiab qis, xws li cov tshuaj ntxuav tes, cov neeg sawv cev textile, thiab lwm yam.
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txoj kev daws teeb meem
Txoj kev siv cov tshuaj yaj kuj hu ua txoj kev siv cov tshuaj yaj organic. Nws lub ntsiab lus tseem ceeb yog tias cov tshuaj alkalization thiab etherification raug ua tiav raws li qhov xwm txheej uas cov tshuaj yaj organic siv ua cov tshuaj tiv thaiv (diluent). Raws li qhov ntau ntawm cov tshuaj tiv thaiv diluent, nws raug muab faib ua txoj kev kneading thiab txoj kev slurry. Txoj kev siv cov tshuaj yaj zoo ib yam li cov txheej txheem tiv thaiv ntawm txoj kev siv dej, thiab nws kuj muaj ob theem ntawm alkalization thiab etherification, tab sis cov tshuaj tiv thaiv ntawm ob theem no txawv. Txoj kev siv cov tshuaj yaj tshem tawm cov txheej txheem uas muaj nyob hauv txoj kev siv dej, xws li kev soaking, squeezing, pulverizing, aging, thiab lwm yam, thiab alkalization thiab etherification raug ua tiav hauv lub kneader. Qhov tsis zoo yog tias kev tswj qhov kub tsis zoo, qhov chaw xav tau thiab tus nqi siab. Tau kawg, rau kev tsim cov khoom siv sib txawv, nws yog qhov tsim nyog los tswj qhov kub thiab txias ntawm lub cev, lub sijhawm pub mis, thiab lwm yam, kom cov khoom lag luam zoo thiab kev ua tau zoo tuaj yeem npaj tau. Nws cov txheej txheem ntws tau qhia hauv Daim Duab 2.
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Xwm txheej ntawm kev npaj ntawm SodiumCarboxymethyl Celluloselos ntawm Cov Khoom Siv Ua Liaj Ua Teb
Cov khoom qoob loo muaj ntau yam thiab yooj yim nrhiav tau, thiab siv tau dav ua cov khoom siv raw rau kev npaj CMC. Tam sim no, CMC cov khoom siv raw feem ntau yog cov cellulose refined, suav nrog paj rwb fiber, cassava fiber, straw fiber, xyoob fiber, nplej straw fiber, thiab lwm yam. Txawm li cas los xij, nrog rau kev txhawb nqa CMC daim ntawv thov hauv txhua qhov chaw ntawm lub neej, nyob rau hauv cov peev txheej ua cov khoom siv raw uas twb muaj lawm, yuav ua li cas siv cov khoom siv raw pheej yig dua thiab dav dua rau kev npaj CMC yuav dhau los ua qhov tseem ceeb.
Kev Pom Zoo
Sodium carboxymethyl cellulose siv tau ua emulsifier, flocculant, thickener, chelating agent, water-retaining agent, adhesive, sizing agent, film-forming material, thiab lwm yam. Nws siv dav hauv electronics, tawv, plastics, printing, ceramics, txhua hnub siv tshuaj thiab lwm yam teb, thiab vim nws muaj kev ua tau zoo heev thiab ntau yam kev siv, nws tseem niaj hnub tsim cov teb tshiab. Niaj hnub no, nyob rau hauv kev sib kis dav dav ntawm lub tswv yim ntawm kev tsim tshuaj ntsuab, kev tshawb fawb txawv teb chaws ntawmCMCKev npaj thev naus laus zis tsom mus rau kev tshawb nrhiav cov khoom siv raw khoom pheej yig thiab yooj yim tau txais thiab cov txheej txheem tshiab rau CMC purification. Raws li lub tebchaws uas muaj cov peev txheej ua liaj ua teb loj, kuv lub tebchaws nyob hauv kev hloov kho cellulose Hauv kev siv thev naus laus zis, nws muaj qhov zoo ntawm cov khoom siv raw, tab sis kuj muaj teeb meem xws li kev tsis sib xws hauv cov txheej txheem npaj los ntawm ntau qhov chaw ntawm biomass cellulose fibers thiab qhov sib txawv loj hauv cov khoom. Tseem muaj qhov tsis txaus ntawm kev siv cov ntaub ntawv biomass, yog li kev ua tiav ntxiv hauv cov cheeb tsam no yuav tsum tau ua kev tshawb fawb ntau.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024