Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup

Marguerite Bienia (1) , Martine Lejeune (1) , Michaël Chambon (2) , Valérie Baco-Carles (3) , Chrystelle Dossou-Yovo (4) , Rémi Noguera (4) , Fabrice Rossignol (1)

1 SPCTS-AXE1 - Axe 1 : procédés céramiques
2 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
3 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
4 CERADROP - CERADROP

Filament growth and breakup are investigated in the context of ceramic inkjet printing. Several inks were formulated and ejected on a printer dedicated to ceramic materials. They consisted of six colloidal inks, four simple fluids and two graphic inks. For each, stroboscopic snapshots were acquired and the filament shape was extracted and analysed, for different nozzle actuation pulses. The filament length and the thread minimum radius were measured during the ejection process. A scaling of the breakup time with the Rayleigh number was obtained, as well as a general behaviour for the filament growth rate during the ejection process.

Mots clés: Inkjet printing; Drop-on-demand; Colloidal suspensions; Ceramics; Fluid mechanics; Filament breakup

Domaines: Matériaux; Mécanique des fluides [physics.class-ph]

Marguerite Bienia, Martine Lejeune, Michaël Chambon, Valérie Baco-Carles, Chrystelle Dossou-Yovo, et al.. Inkjet printing of ceramic colloidal suspensions: Filament growth and breakup. Chemical Engineering Science, 2016, vol. 149, pp.1-13. ⟨10.1016/j.ces.2016.04.015⟩. ⟨hal-01450695⟩