Bi-material interfaces in 3D polyjet printing
Project description
Polyjet printing is a material jetting method able to combine, at the µm level, soft/tough and stiff/brittle polymers. The mechanical behavior of such composites is controlled by internal interfaces. However, in polyjet printing interface properties are unknown. In collaboration with colleagues from Politecnico di Milano (Italy) we characterize the mechanical properties of interfaces between different photopolymers by dynamic mechanical analysis and nanoindentation. We showed that, depending on printing modality, bimaterial interfaces can be very sharp (~10 µm) or blurred (~200 µm). We also reported that interface behavior is dominated by the stiff polymer. Our results provide insights in the micro-scale behavior of 3D printed interfaces, which should be considered when designing multimaterial composites.
Contacts
Related Publications
📃 L. Zorzetto, L. Andena, F. Briatico Vangosa, L. De Noni, J-M Thomassin, C. Jérôme, Q. Grossman, A. Mertens, R. Weinkamer, M. Rink, D. Ruffoni*. Properties and role of interfaces in multimaterial 3D printed composites. Scientific Reports 2020. In Press.
Collaborations
👥 Luca Andena (Dipartimento di chimica, materiali e ingegneria chimica “G. Natta", Politecnico di Milano, Milan, Italy)
👥 Francesco Briatico Vangosa (Dipartimento di chimica, materiali e ingegneria chimica “G. Natta", Politecnico di Milano, Milan, Italy)
👥 Marta Rink (Dipartimento di chimica, materiali e ingegneria chimica “G. Natta", Politecnico di Milano, Milan, Italy)
