Abakwa-Cellulose Bafers yizinto eziguquguqukayo ezisetshenziswa ezinhlobonhlobo zezimboni ezibandakanya ukwakhiwa, amakhambi kanye nokudla. Inqubo yokukhiqiza ye-cellulose ether iyinkimbinkimbi kakhulu, ifaka izinyathelo eziningi, futhi idinga ubuchwepheshe obuningi kanye nemishini ekhethekile. Kulesi sihloko, sizoxoxa ngokuningiliziwe inqubo yokwenza izitha ze-cellulose.
Isinyathelo sokuqala enqubweni yokukhiqiza i-cellulose ether ukulungiswa kwezinto ezingavuthiwe. Izinto ezingavuthiwe ezisetshenziselwa ukukhiqiza izifebe ze-cellulose zivame ukuvela ngotshani lwezinkuni nokotini. I-solip yezinkuni yahlukaniswa futhi yahlolelwa ukususa noma yimuphi udoti omkhulu, ngenkathi imfucuza yekotoni icutshungulwa ibe yipulpiti elihle. I-pulp isehliswe ngosayizi ngokugaya ukuthola i-powder enhle. I-polping ye-powded pulp nokotini imfucumfucu bese behlanganiswa ndawonye ngokulingana okuthile ngokuya ngezakhiwo ezifiselekayo zomkhiqizo wokugcina.
Isinyathelo esilandelayo sibandakanya ukucutshungulwa kwamakhemikhali kwe-feedstock exubile. I-pulp yelashwa okokuqala nge-alkaline solution (imvamisa i-sodium hydroxide) ukudiliza isakhiwo se-cellulose. Isokisi eliphumayo liphathwa nge-solvent enjenge-carbon disfafide ukukhiqiza i-cellulose xanthate. Lokhu kwelashwa kwenziwa emathangini nge-pulp eqhubekayo eqhubekayo. Isixazululo se-cellulose xanthate sekwenziwa nge-DECRONSION SENDUSSION ukwenza i-filaments.
Ngemuva kwalokho, i-cellulose Xanthate Filaments yahlelwa kubhavu oqukethe i-sulfuric acid. Lokhu kuphumela ekuvuseleleni kabusha kwamaketanga we-cellulose xanthate, kwakha imicu ye-cellulose. I-cellulose fibers esanda kwakhiwa igezwa ngamanzi ukususa noma yikuphi ukungcola ngaphambi kokuhlanganiswa. Inqubo yokufaka i-bleaching isebenzisa i-hydrogen peroxide ukumhlophe mhlophe imicu ye-cellulose, bese igezwa ngamanzi ngakwesokunxele ukuze yomile.
Ngemuva kokuthi imicu ye-cellulose yomile, bathola inqubo ebizwa ngokuthi ukusheshisa. Inqubo yokulandela ifaka ukwethulwa kwamaqembu e-ether, anjenge-methyl, ethyl noma amaqembu we-hydroxyethyyl, abe yi-cellulose fibers. Le ndlela yenziwa kusetshenziswa ukusabela kwe-ejenti yokusheshisa kanye ne-acid carlyst phambi kwe-solvent. Ukuphendula kuvame ukwenziwa ngaphansi kwezimo ezilawulwa ngokucophelela zokushisa kanye nengcindezi yokuqinisekisa ukuvezwa komkhiqizo ophakeme kanye nobumsulwa.
Ngalesi sikhathi, i-cellulose ether yayisesimweni sempuphu emhlophe. Umkhiqizo osuqediwe bese ufakwa ngaphansi kochungechunge lwezivivinyo zokulawula ezisezingeni elifanele ukuqinisekisa ukuthi umkhiqizo uhlangabezana nezintandokazi ezifiselekayo kanye nokucaciswa, njengokuqonda, ukuhlanzeka komkhiqizo kanye nokuqukethwe komswakama kanye nokuqukethwe komswakama kanye nokuqukethwe komswakama kanye nokuqukethwe komswakama. Kube sekuhlanganiswe futhi kuthunyelwa kumsebenzisi wokugcina.
Ukufingqa, inqubo yokukhiqiza ye-cellulose ether ifaka ukulungiswa okubonakalayo okubonakalayo, ukwelashwa kwamakhemikhali, ukuxuba, ukuxubha nokuthezeka, kulandelwe ukuhlolwa kwekhwalithi yekhwalithi. Yonke inqubo idinga imishini ekhethekile nolwazi lokuphendula kwamakhemikhali futhi kwenziwa ngaphansi kwezimo ezilawulwa ngokuqinile. Ukukhiqiza i-Cellulose Tashers inqubo eyinkimbinkimbi futhi edla isikhathi, kepha kubalulekile ezimbonini eziningi.
Isikhathi sePosi: Jun-21-2023