Photopolymerization, based on light-induced radical polymerization, is nowadays exploited in additive manufacturing (AM) technologies enabling to achieve high dimensional quality. The mechanical properties of the obtained material are heavily dependent on the chemistry of the photopolymer and on the way the AM process is performed. Here we study, through experiments and theoretical modeling, how the mechanical properties of liquid crystal shutter (LCD) printed photopolymers depend on the printing process setup, namely UV exposure time and layer thickness. To this end, a multi-physics simulation tool considering the light diffusion, chemical kinetics, and the micro-mechanics at the network level, has been developed.

Mechanical characterization of additively manufactured photopolymerized polymers / Brighenti, Roberto; Marsavina, Liviu; Marghitas, Mihai P.; Cosma, Mattia P.; Montanari, Matteo. - In: MECHANICS OF ADVANCED MATERIALS AND STRUCTURES. - ISSN 1537-6532. - (2022). [10.1080/15376494.2022.2045655]

Mechanical characterization of additively manufactured photopolymerized polymers

Roberto Brighenti;Mattia P. Cosma;Matteo Montanari
2022

Abstract

Photopolymerization, based on light-induced radical polymerization, is nowadays exploited in additive manufacturing (AM) technologies enabling to achieve high dimensional quality. The mechanical properties of the obtained material are heavily dependent on the chemistry of the photopolymer and on the way the AM process is performed. Here we study, through experiments and theoretical modeling, how the mechanical properties of liquid crystal shutter (LCD) printed photopolymers depend on the printing process setup, namely UV exposure time and layer thickness. To this end, a multi-physics simulation tool considering the light diffusion, chemical kinetics, and the micro-mechanics at the network level, has been developed.
Mechanical characterization of additively manufactured photopolymerized polymers / Brighenti, Roberto; Marsavina, Liviu; Marghitas, Mihai P.; Cosma, Mattia P.; Montanari, Matteo. - In: MECHANICS OF ADVANCED MATERIALS AND STRUCTURES. - ISSN 1537-6532. - (2022). [10.1080/15376494.2022.2045655]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2916788
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