I-sodium carboxymethyl cellulose (CMC)iwukuphuma kwe-carboxymethylated ku-cellulose, eyaziwa nangokuthi inhlaka ye-cellulose, futhi iyishingamu ye-ionic cellulose ebaluleke kakhulu. I-CMC imvamisa iyinhlanganisela ye-anionic polymer etholakala ngokusabela i-cellulose yemvelo nge-caustic alkali ne-monochloroacetic acid. Isisindo samangqamuzana enhlanganisela sisukela emashumini ezigidi kuya ezigidini ezimbalwa.
【Izakhiwo】Impushana emhlophe, ayinaphunga, inyibilika emanzini ukwenza isixazululo se-viscosity ephezulu, engancibiliki ku-ethanol nezinye izincibilikisi.
【Uhlelo lokusebenza】Inomsebenzi wokumisa nokuhlanganisa i-emulsification, ukuhlangana okuhle nokumelana nosawoti, futhi yaziwa ngokuthi “i-industrial monosodium glutamate”, esetshenziswa kakhulu.
Ukulungiswa kwe-CMC
Ngokusho kwe-etherification medium ehlukene, ukukhiqizwa kwezimboni ze-CMC kungahlukaniswa ngezigaba ezimbili: indlela esekelwe emanzini kanye nendlela esekelwe ku-solvent. Indlela yokusebenzisa amanzi njengendlela yokusabela ibizwa ngokuthi indlela etholakala emanzini, esetshenziselwa ukukhiqiza i-CMC ye-alkaline ephakathi nendawo nesezingeni eliphansi; indlela yokusebenzisa i-solvent ephilayo njengendlela yokusabela ibizwa ngokuthi indlela ye-solvent, efanelekile ukukhiqizwa kwe-CMC ephakathi nendawo nephezulu. Kokubili lokhu kusabela kwenziwa ku-kneader, okuyingxenye yenqubo yokuxova futhi kuyindlela eyinhloko yokukhiqiza i-CMC okwamanje.
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indlela esekwe emanzini
Indlela ethwala amanzi iyinqubo yokukhiqiza yezimboni yangaphambili, okuwukusabela i-alkali cellulose ne-ejenti e-etherifying esimweni se-alkali yamahhala namanzi. Ngesikhathi senqubo ye-alkalization kanye ne-etherification, ayikho i-organic medium ohlelweni. Izidingo zemishini yokusetshenziswa kwamanzi zilula, ngokutshalwa kwezimali okuncane kanye nezindleko eziphansi. Ububi ukuthi kukhona ukuntuleka kwenani elikhulu le-liquid medium, futhi ukushisa okukhiqizwa ukusabela kwandisa izinga lokushisa, okusheshisa isivinini sokusabela ohlangothini, okuholela ekusebenzeni kahle kwe-etherification kanye nekhwalithi yomkhiqizo ompofu. Le ndlela isetshenziselwa ukulungisa imikhiqizo ye-CMC ephakathi nesezingeni eliphansi, njengezihlanzi, ama-ejenti okulinganisa izindwangu, njll.
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indlela ye-solvent
Indlela ye-solvent yaziwa nangokuthi indlela ye-solvent ye-organic. Isici sawo esiyinhloko ukuthi ukusabela kwe-alkalization kanye ne-etherification kwenziwa ngaphansi kwesimo sokuthi i-solvent ye-organic isetshenziswa njengendlela yokusabela (i-diluent). Ngokwenani le-reaction diluent, ihlukaniswe ngendlela yokuxova kanye nendlela yodaka. Indlela ye-solvent iyafana nenqubo yokusabela yendlela esekwe emanzini, futhi iqukethe nezigaba ezimbili ze-alkalization kanye ne-etherification, kodwa indlela yokusabela yalezi zigaba ezimbili ihlukile. Indlela ye-solvent iqeda izinqubo ezitholakala endleleni esekwe emanzini, njengokucwiliswa emanzini, ukukhama, ukugaya, ukuguga, njll., kanye ne-alkalization kanye ne-etherification konke kwenziwa ku-kneader. Okubi ukuthi izinga lokushisa liphansi kakhulu, isidingo sesikhala kanye nezindleko ziphezulu. Yiqiniso, ukukhiqizwa kwezakhiwo ezahlukene zemishini, kuyadingeka ukulawula ngokuqinile izinga lokushisa lesistimu, isikhathi sokudla, njll, ukuze imikhiqizo enekhwalithi enhle kakhulu nokusebenza ingalungiswa. Ishadi layo lokugeleza kwenqubo liboniswa kuMfanekiso 2.
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Isimo Sokulungiselela SodiumI-Carboxymethyl Cellulosekusukela ku-Agricultural By-products
Imikhiqizo ye-Crop by-product inezici zokuhlukahluka nokutholakala kalula, futhi ingasetshenziswa kabanzi njengezinto ezingavuthiwe zokulungiselela i-CMC. Okwamanje, izinto zokusetshenziswa zokukhiqiza ze-CMC ziyi-cellulose ecolisisiwe, okuhlanganisa i-cotton fiber, i-cassava fiber, i-straw fiber, i-bamboo fiber, i-fiber straw kakolweni, njll. Nokho, ngokukhuthazwa okuqhubekayo kwezicelo ze-CMC kuyo yonke imikhakha yokuphila, ngaphansi kwezinsiza zokucubungula izinto ezingavuthiwe, indlela yokusebenzisa imithombo eshibhile nebanzi yezinto zokusetshenziswa zokulungiselela i-CMC nakanjani izoba yisisekelo sokulungiselela i-CMC.
I-Outlook
I-sodium carboxymethyl cellulose ingasetshenziswa njenge-emulsifier, i-flocculant, i-thickener, i-ejenti e-chelating, i-ejenti yokugcina amanzi, i-adhesive, i-ejenti yokulinganisa, izinto zokwakha ifilimu, njll. Isetshenziswa kabanzi ku-electronics, isikhumba, amapulasitiki, ukuphrinta, izitsha zobumba, ukusetshenziswa kwansuku zonke Amakhemikhali kanye neminye imikhakha, futhi ngenxa yokuthuthukiswa kokusetshenziswa kwayo okusha, ukusebenza okubanzi kanye nobubanzi obuqhubekayo. Namuhla, ngaphansi kokusabalalisa kabanzi komqondo wokukhiqizwa kwamakhemikhali aluhlaza, ucwaningo lwangaphandle kuI-CMCubuchwepheshe bokulungiselela bugxile ekusesheni izinto zokusetshenziswa zebhayoloji ezishibhile futhi okulula ukuzithola kanye nezindlela ezintsha zokuhlanzwa kwe-CMC. Njengezwe elinezinsiza ezinkulu zezolimo, izwe lami lisesimweni sokuguqulwa kwe-cellulose Ngokwezobuchwepheshe, linezinzuzo zezinto zokusetshenziswa, kodwa futhi kunezinkinga ezifana nokungahambisani nenqubo yokulungiselela okubangelwa imithombo ehlukahlukene ye-biomass cellulose fibers kanye nomehluko omkhulu ezingxenyeni. Kusenokushoda ekwanele kokusetshenziswa kwezinto ze-biomass, ngakho-ke okunye okuzuziwe kulezi zindawo kusadingeka kwenziwe ucwaningo olunzulu.
Isikhathi sokuthumela: Apr-25-2024