Indlela yokuqina kwei-hydroxyethyl celluloseiwukwandisa i-viscosity ngokwakhiwa kwezibopho ze-hydrogen eziphakathi kwama-molecule nangaphakathi kwama-molecule, kanye nokumanzisa kanye nokubanjwa kweketanga lamaketanga ama-molecule. Ngakho-ke, indlela yokujiya ye-hydroxyethyl cellulose ingahlukaniswa ngezici ezimbili: enye indima yezibopho ze-hydrogen eziphakathi kwama-molecule nangaphakathi kwama-molecule. Iketanga eliyinhloko le-hydrophobic lihlotshaniswa nama-molecule amanzi azungezile ngezibopho ze-hydrogen, okuthuthukisa ukugeleza kwe-polymer uqobo. Umthamo wezinhlayiya unciphisa isikhala sokuhamba ngokukhululeka kwezinhlayiya, ngaleyo ndlela kwandisa i-viscosity yesistimu; okwesibili, ngokubanjwa kanye nokugqagqana kwamaketanga ama-molecule, amaketanga e-cellulose asesimweni senethiwekhi esinezinhlangothi ezintathu kulo lonke uhlelo, ngaleyo ndlela athuthukisa i-viscosity.
Ake sibheke ukuthi i-cellulose idlala kanjani indima ekuzinzeni kwesitoreji sesistimu: okokuqala, indima yezibopho ze-hydrogen ivimbela ukugeleza kwamanzi akhululekile, idlala indima ekugcinweni kwamanzi, futhi inegalelo ekuvimbeleni ukuhlukaniswa kwamanzi; okwesibili, ukusebenzisana kwamaketanga e-cellulose Ukuhlangana kwe-lap kwakha inethiwekhi exhunywe noma indawo ehlukile phakathi kwama-pigment, ama-filler kanye nezinhlayiya ze-emulsion, okuvimbela ukuhlangana.
Ukuhlanganiswa kwezindlela ezimbili zesenzo ezingenhla okuvumelai-hydroxyethyl celluloseukuba nekhono elihle kakhulu lokuthuthukisa ukuzinza kwesitoreji. Ekukhiqizweni kopende we-latex, i-HEC eyengeziwe ngesikhathi sokushaya nokuhlakazeka iyanda ngokwanda kwamandla angaphandle, i-gradient yejubane lokugunda iyanda, ama-molecule ahlelwe ngendlela ehlelekile ehambisana nesiqondiso sokugeleza, futhi uhlelo lokugoqa i-lap phakathi kwamaketanga ama-molecule luyabhujiswa, okulula ukulushelela komunye nomunye, i-viscosity yesistimu iyancipha. Njengoba uhlelo luqukethe inani elikhulu lezinye izingxenye (ama-pigment, ama-filler, ama-emulsion), lolu hlelo oluhlelekile alukwazi ukubuyisela isimo esibambene sokuxhumanisa nokugqagqana ngisho noma lubekwe isikhathi eside ngemva kokuba upende uxutshwe. Kulokhu, i-HEC incike kuphela ezibophweni ze-hydrogen. Umphumela wokugcina amanzi nokugqagqana kunciphisa ukusebenza kahle kokugqagqanaI-HEC, futhi umnikelo walesi simo sokusabalala ekuzinzeni kwesitoreji sesistimu nawo uncishisiwe ngokufanele. Kodwa-ke, i-HEC encibilikisiwe yahlakazeka ngokulinganayo ohlelweni ngesivinini esiphansi sokushukumisa ngesikhathi sokwehlisa, futhi isakhiwo senethiwekhi esakhiwe ukuxhumanisa amaketanga e-HEC sasonakele kangako. Ngakho-ke sibonisa ukusebenza kahle kokujiya okuphezulu kanye nokuqina kwesitoreji. Ngokusobala, isenzo esisodwa sezindlela ezimbili zokujiya siyisiqalo sokujiya okuphumelelayo kwe-cellulose nokuqinisekisa ukuzinza kwesitoreji. Ngamanye amazwi, isimo sokujiya nokuhlakazeka kwe-cellulose emanzini sizothinta kakhulu umphumela wayo wokujiya kanye negalelo layo ekuzinzeni kwesitoreji.
Isikhathi sokuthunyelwe: Ephreli-25-2024