I-Titanium dioxide(TiO2) i-pigment eguquguqukayo esetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi amapende, ama-coatings, amapulasitiki nezimonyo. Izakhiwo zayo eziyingqayizivele ziyenza ibe isithako esibalulekile ekuzuzeni umbala oyifunayo, ukufiphala nokuvikeleka kwe-UV. Kodwa-ke, ukuze uqaphele amandla aphelele e-TiO2 powder, ukuhlakazeka okuphumelelayo kubalulekile. Ukuhlakazwa ngendlela efanele kuqinisekisa ukusatshalaliswa okulinganayo kanye nokusetshenziswa okuphezulu kombala, okuholela ekongeni kwezindleko nokusebenza okuthuthukisiwe komkhiqizo.
Enye yezinselelo ezibalulekile ekusebenziseni i-TiO2 powder ukuzuza ukuhlakazeka okufanayo. Ukuhlakazeka okungalungile kubangela umbala ongalingani, ukukhanya okuncishisiwe, kanye nekhwalithi yomkhiqizo encishisiwe. Ukubhekana nalolu daba, abakhiqizi nabacwaningi bebelokhu behlola amasu amasha okuthuthukisa ukusetshenziswa kwe-TiO2 powder ngokusebenzisa ubuchwepheshe obusebenzayo bokuhlakazeka.
Indlela esebenzayo yokuthuthukisa ukuhlakazwa kwe-TiO2 ukusebenzisa imishini yokusabalalisa ethuthukisiwe. Ama-dispersers anesivinini esiphezulu, izigayo zobuhlalu, nama-homogenizers asetshenziswa kakhulu amathuluzi asetshenziswa kakhulu ukuze kuzuzwe ukunciphisa usayizi wezinhlayiyana ze-TiO2 kanye nokusabalalisa okufanayo kumatrices ahlukahlukene oketshezi naqinile. Lawa madivaysi asiza ekuhlukaniseni ama-agglomerates kanye nokumanzisa izinhlayiya ze-TiO2, ngaleyo ndlela athuthukise ukuhlakazeka nokusebenza komkhiqizo wokugcina.
Ngokungeziwe kumishini ethuthukisiwe, ukukhetha i-dispersant efanele nakho kubalulekile ekwenzeni ukusetshenziswa kwe-TiO2 powder. Ama-disperants, njengama-surfactants kanye nezithasiselo ze-polymer, adlala indima ebalulekile ekuqiniseni ukuhlakazeka, ukuvimbela ukuhlanganisa kabusha kanye nokukhuthaza ukunamathela ku-substrate. Ngokukhetha ngokucophelela i-dispersant efanelekile ngokusekelwe kuhlelo lokusebenza oluthile kanye ne-matrix, abakhiqizi bangakwazi ukufeza ukuhlakazeka okuphumelelayo kwe-TiO2 powder futhi bathuthukise ukusebenza kwayo jikelele.
Ukwengeza, ukuhlanganiswa kobuchwepheshe bokwelashwa kwendawo kungathinta kakhulu ukuhlakazeka nokusetshenziswa kwe-TiO2 powder. Amasu okushintsha indawo engaphezulu, njengokwelashwa kwe-silane kanye ne-alumina coating, angathuthukisa ukuhambisana kwe-TiO2 namatrices ahlukene, ngaleyo ndlela enze ngcono ukuhlakazeka nokunamathela. Lokhu kwelashwa okungaphezulu futhi kusiza ukuthuthukisa ukumelana nesimo sezulu nokuqina kwemikhiqizo equkethe i-TiO2, iyenze ifaneleke kakhulu izinhlelo zokusebenza zangaphandle.
Esinye isici sokuthuthukisa ukusetshenziswa kweI-TiO2 powderukuthuthukiswa kwezixazululo zokusabalalisa ezenziwe ngezifiso zezinhlelo zokusebenza ezithile. Izimboni nemikhiqizo eyahlukene ingase idinge amasu ahlukile okuhlukahluka ukuze kuzuzwe ukusebenza okuphezulu. Isibonelo, embonini yamapende nezingubo zokugqoka, i-titanium dioxide dispersions eyakhiwe nge-rheology modifiers kanye ne-stabilizers ingathuthukisa izakhiwo zokugeleza futhi ivimbele ukuhlalisa, iqinisekise umbala ongaguquki kanye nokufakwa. Ngokufanayo, embonini yepulasitiki, ukwakheka kwe-masterbatch okunokusabalalisa okuthuthukisiwe kwe-TiO2 kungathuthukisa izici zemishini nezokubona zomkhiqizo wokugcina.
Kafushane, ukwenza ngcono ukusetshenziswa kwe-TiO2 powder ngokusebenzisa ukusabalalisa okuphumelelayo kubalulekile ekwandiseni izinzuzo zayo ezinhlelweni ezihlukahlukene. Ngokusebenzisa okokusebenza okuthuthukisiwe kokuhlakazeka, ukukhetha izihlakaniphi ezifanele, ukuhlanganisa ubuchwepheshe bokwelashwa kwendawo kanye nokwenza ngendlela oyifisayo izixazululo zokuhlakazeka, abakhiqizi bangafinyelela ukuhlakazeka okufanayo kwe-TiO2 futhi bathuthukise ukusebenza kwayo emkhiqizweni wokugcina. Lawa maqhinga awasizi nje kuphela ukonga izindleko nokuthuthukisa ikhwalithi yomkhiqizo, kodwa futhi avula indlela yokuqamba okusha okuqhubekayo kanye nokuthuthuka kwezinto ezisekelwe ku-titanium dioxide emakethe yomhlaba.
Isikhathi sokuthumela: Aug-13-2024