IHydroxyethyl Cellulose (HEC) iyinhlanganisela evamile ye-polymer encibilika emanzini esetshenziswa kakhulu kupende we-latex. Ayidlali nje indima ebalulekile ekuthuthukiseni ukusebenza komkhiqizo, kodwa futhi ithuthukisa kakhulu isipiliyoni sohlelo lokusebenza kanye nekhwalithi yefilimu yokugcina yokumboza.
Izici ze-Hydroxyethyl Cellulose
I-Hydroxyethyl cellulose i-nonionic cellulose ether ekhiqizwa ku-cellulose yemvelo ngokuguqulwa kwe-etherification. Inokuqina okuhle, ukumisa, ukuhlakaza kanye nezakhiwo ze-emulsifying. Lezi zakhiwo zenza i-HEC yenze ama-colloid azinzile ezixazululweni ezinamanzi ane-viscosity ephezulu kanye nezakhiwo ezinhle ze-rheological. Ukwengeza, isixazululo samanzi se-HEC sinokucaca okuhle namandla okugcina amanzi asebenzayo. Lezi zici ziyenza isetshenziswe kabanzi kumapende e-latex.
Indima kupende we-latex
ukuqina
Njengobunye bokuqina okuyinhloko kopende we-latex, umsebenzi obaluleke kakhulu we-HEC ukukhulisa i-viscosity yoketshezi lopende. I-viscosity efanele ayikwazi nje ukuthuthukisa ukuzinza kwesitoreji sepende ye-latex, kodwa futhi ivimbele imvula kanye ne-delamination. Ngaphezu kwalokho, i-viscosity efanele isiza ukulawula ukuwohloka futhi iqinisekise izinga elihle kanye nokumbozwa ngesikhathi sokufaka isicelo, ngaleyo ndlela ithola ifilimu yokuhlanganisa iyunifomu.
ukuthuthukiswa kokusimama
I-HEC ingathuthukisa kakhulu ukuzinza kwamapende e-latex. Ekwenzeni upende we-latex, i-HEC ingavimbela ngempumelelo ama-pigments nama-filler ukuthi angahlali, okuvumela upende ukuthi uhlale uhlakazekile ngokulinganayo ngesikhathi sokugcinwa nokusetshenziswa. Lesi sakhiwo sibaluleke kakhulu ekugcinweni kwesikhathi eside, esiza ukwandisa impilo yeshalofu yopende we-latex.
Ukugcinwa kwamanzi
Ukwakhiwa kopende we-latex ngokuvamile kuhilela ukusetshenziswa kwamanzi amaningi, futhi izindawo ezinhle kakhulu zokugcina amanzi ze-HEC zigcina ifilimu yokumboza imanzi ngokulinganayo phakathi nenqubo yokomisa, igwema ukukhubazeka okungaphezulu njengokuqhekeka, i-powdering nezinye izinkinga ezibangelwa ukuhwamuka kwamanzi ngokushesha. . Lokhu akusizi nje kuphela ukwakha ifilimu yokugqoka, kodwa futhi kuthuthukisa ukunamathela nokuqina kwefilimu yokugqoka.
Ukulungiswa kwe-Rheology
Njengesiguquli se-rheology, i-HEC ingakwazi ukulungisa ukuziphatha kwe-shear thinning yamapende e-latex, okungukuthi, i-viscosity kapende iyancishiswa ngamanani aphezulu okugunda (njengokuxubha, ukumboza nge-roller, noma ukufutha), okwenza kube lula ukuyisebenzisa, futhi amanani aphansi we-shear. Ukutholwa kwe-viscosity ngamazinga okugunda (isb ekuphumuleni) kuvimbela ukuhlehla nokugeleza. Lesi sakhiwo se-rheological sinomthelela oqondile ekwakhiweni kanye nekhwalithi yokugcina yokugqoka yepende ye-latex.
Ukuthuthukiswa kokwakhiwa
Ukwethulwa kwe-HEC kungathuthukisa kakhulu ukusebenza kopende we-latex, kwenze upende ube bushelelezi futhi ufane kakhulu ngesikhathi sokufakwa. Inganciphisa izimpawu zebhulashi, inikeze ubushelelezi obuhle kanye nokucwebezela kwefilimu yokuhlanganisa, futhi ithuthukise ulwazi lomsebenzisi.
Khetha futhi usebenzise
Ekwakheni upende we-latex, ukukhethwa kanye nesilinganiso se-HEC kudingeka kulungiswe ngokusekelwe ezidingweni ezithile zohlelo lokusebenza. I-HEC enama-viscosity ahlukene namadigri okushintsha izoba nemiphumela ehlukene ekusebenzeni kwamapende e-latex. Ngokuvamile, i-high-viscosity HEC ifaneleka kakhulu opende be-latex abagqinsiwe abadinga i-viscosity ephakeme, kuyilapho i-HEC ene-viscosity ephansi ifaneleka opende abambozwe omncane abanoketshezi olungcono. Ngaphezu kwalokho, inani le-HEC elengeziwe lidinga ukuthuthukiswa ngokwezidingo zangempela. I-HEC eningi kakhulu izobangela ukuqina okweqile kwe-coating, okungahambisani nokwakhiwa.
Njengesengezo esisebenzayo esibalulekile, i-hydroxyethyl cellulose idlala izindima eziningi kumapende e-latex: ukuqina, ukuqiniswa, ukugcina amanzi kanye nokwenza ngcono ukusebenza. Ukusetshenziswa okunengqondo kwe-HEC akukwazi nje ukuthuthukisa ukuzinza kwesitoreji nokusebenza kokwakhiwa kwepende ye-latex, kodwa futhi kuthuthukisa kakhulu ikhwalithi nokuqina kwefilimu yokugqoka. Ngokuthuthuka kwemboni yokumboza kanye nentuthuko yezobuchwepheshe, amathuba okusetshenziswa kwe-HEC kupende we-latex azoba banzi.
Isikhathi sokuthumela: Aug-03-2024