Umlingiswa:I-Hydroxyethyl Cellulose (HEC CAS:9004-62-0) iyimpuphu emhlophe noma ephuzi engenaphunga, engenaphunga, futhi egeleza kalula. Incibilika emanzini abandayo nasemanzini ashisayo, kodwa ngokuvamile ayincibiliki ezinyibilikisini eziningi eziphilayo. Inani le-pH lishintsha kancane ebangeni eliphakathi kuka-2-12, kodwa i-viscosity iyancipha ngale kwaleli banga.
Inani：I-Hydroxyethyl Cellulose (HEC CAS:9004-62-0) iyisithambisi esivame ukusetshenziswa kuma-inki asekelwe emanzini asekelwe emanzini asekelwe ku-cellulose ether. Iyinhlanganisela engeyona i-ionic encibilikayo emanzini enekhono elihle lokujiya kwamanzi, ingangcoliswa yi-oxygen, ama-acid, nama-enzyme, futhi ingaxhunyaniswa yi-Cu2+ ngaphansi kwezimo ze-alkaline. Izinzile ngokwezinga lokushisa, ayibonakali njengejeli ngesikhathi sokushisa, ayimi ngaphansi kwezimo ze-acidic, futhi inempahla enhle yokwakha ifilimu. Isixazululo sayo samanzi singenziwa sibe amafilimu acacile, angakhiwa ngesenzo se-alkaline cellulose kanye ne-Chemicalbook ethylene oxide, futhi inezimpawu zokujiya, i-emulsification, ukunamathela, ukumiswa, ukwakha ifilimu, ukugcinwa komswakama, kanye nokuvikelwa kwe-colloid. Indima yama-thickeners kuma-inki asekelwe emanzini ukuwajiya. Ukwengeza ama-thickeners kuyinki kwandisa i-viscosity yayo, okungathuthukisa ukuzinza ngokomzimba namakhemikhali kweyinki; Ngenxa yokwanda kwe-viscosity, i-rheology yeyinki ingalawulwa ngesikhathi sokuphrinta; Umbala kanye nokugcwalisa okuku-inki akulula ukukulungisa, okwandisa ukuzinza kokugcinwa kwe-inki esuselwe emanzini.
Indlela YokukhiqizaI-Alkali cellulose iyi-polymer yemvelo equkethe amaqembu amathathu e-hydroxyl endandatho ngayinye yesisekelo se-fiber. Iqembu le-hydroxyl elisebenza kakhulu liyasabela ukukhiqiza i-hydroxyethyl cellulose. Cwilisa i-linter yekotini eluhlaza noma i-pulp ecociwe ku-30% we-alkali ewuketshezi, bese uyikhipha ukuze uyicindezele ngemva kwesigamu sehora. Cindezela kuze kube yilapho okuqukethwe kwamanzi e-alkaline kufinyelela ku-1:2.8, bese uyichoboza. I-alkaline cellulose echotshoziwe ifakwa ku-reactor, ivalwe, ihlanzwe, bese igcwaliswa nge-nitrogen. I-Chemicalbook ihlanzwe ngokuphindaphindiwe futhi igcwaliswe nge-nitrogen ukuze ithathe indawo yawo wonke umoya ku-reactor. Cindezela ku-ethylene oxide epholile, dlulisela amanzi apholile ejakethini le-reactor, bese ulawula izinga lokushisa lokusabela libe cishe ngu-25 ℃ amahora ama-2 ukuze uthole umkhiqizo we-hydroxyethyl cellulose ongahluziwe. Umkhiqizo ongahluziwe ugezwa ngotshwala, uncishiswe nge-acetic acid ku-pH 4-6, bese uxhunyaniswa ne-glyoxal yokuguga. Bese ugeza ngamanzi, u-centrifuge, ukhiphe amanzi emzimbeni, womise, bese ugaya ukuze uthole i-hydroxyethyl cellulose.
Isikhathi sokuthunyelwe: Mashi-28-2023
