Umlingiswa:IHydroxyethyl Cellulose (HEC CAS:9004-62-0) iyimpushana emhlophe noma ephuzi engenaphunga, ayinaphunga, futhi egeleza kalula.Incibilika emanzini abandayo nasemanzini ashisayo, kodwa ngokuvamile ayincibiliki kuzincibilikisi eziningi eziphilayo.Inani le-pH lishintsha kancane kububanzi obungu-2-12, kodwa i-viscosity iyancipha ngale kwalolu bubanzi.
Inani:I-Hydroxyethyl Cellulose (HEC CAS:9004-62-0) iwugqinsi osetshenziswa kakhulu kumayinki we-cellulose ether asuselwa ku-organic asekelwe emanzini.Kuyinhlanganisela ye-nonionic encibilika emanzini enekhono elihle lokujiya emanzini, ingonakaliswa umoya-mpilo, ama-acids, nama-enzyme, futhi ingaxhunywa nge-Cu2+ ngaphansi kwezimo ze-alkali.Iqinile ngokushisa, ayiveli ijeli lapho kushisa, ayidli ngaphansi kwezimo ezine-asidi, futhi inendawo enhle yokwenza ifilimu.Isixazululo saso samanzi singenziwa sibe amafilimu asobala, angakhiwa isenzo se-alkaline cellulose kanye ne-Chemicalbook ethylene oxide, futhi inezici zokuqina, i-emulsification, ukunamathela, ukumiswa, ukwakheka kwefilimu, ukugcinwa komswakama, nokuvikelwa kwe-colloid.Indima yama-thickeners kuma-inki asekelwe emanzini ukuwashubisa.Ukwengeza ama-thickeners kuyinki kwandisa i-viscosity yayo, engathuthukisa ukuzinza ngokomzimba namakhemikhali kayinki;Ngenxa yokwanda kwe-viscosity, i-rheology yeyinki ingalawulwa ngesikhathi sokunyathelisa;I-pigment ne-filler kuyinki akulula ukugcwala, okwandisa ukuzinza kwesitoreji sikayinki osekelwe emanzini.
Indlela Yokukhiqiza:I-Alkali cellulose iyi-polymer yemvelo equkethe amaqembu amathathu e-hydroxyl ku-fiber base ring ngayinye.Iqembu le-hydroxyl elisebenza kakhulu liyasabela ukuze likhiqize i-hydroxyethyl cellulose.Gcoba i-linter kakotini eluhlaza noma i-pulp ecolisisiwe ku-30% ye-alkali ewuketshezi, bese uyikhipha ukuze uyicindezele ngemva kwesigamu sehora.Cindezela kuze kube yilapho amanzi ane-alkaline efinyelela ku-1:2.8, bese uwachoboza.I-alkali cellulose echotshoziwe ifakwa ku-reactor, ivalwe, ifakwe vacuum, futhi igcwaliswe nge-nitrogen.I-Chemicalbook yavanywa kaningi futhi yagcwaliswa nge-nitrogen ukuze imiselele wonke umoya kureactor.Cindezela oketshezini olupholile lwe-ethylene oxide, dlulisela amanzi apholisayo ejazini le-reactor, bese ulawula izinga lokushisa lokusabela libe cishe ku-25 ℃ amahora angu-2 ukuze uthole umkhiqizo ongahluziwe we-hydroxyethyl cellulose.Umkhiqizo ongahluziwe ugezwa ngotshwala, ususwe nge-acetic acid ukuya ku-pH 4-6, bese uxhunyaniswa ne-glyoxal yokuguga.Bese ugeza ngamanzi, i-centrifuge, dehydrate, yomile, futhi ugaye ukuze uthole i-hydroxyethyl cellulose.
Isikhathi sokuthumela: Mar-28-2023
