Romeis M, Ehrngruber M, Drummer D (2024)
Publication Type: Conference contribution
Publication year: 2024
Publisher: Elsevier B.V.
Book Volume: 124
Pages Range: 257-260
Conference Proceedings Title: Procedia CIRP
Event location: Furth, DEU
DOI: 10.1016/j.procir.2024.08.112
Advancements in the Internet of Things demand more capable antenna systems, which benefit from the complex geometries enabled by additive manufacturing. Novel approaches, such as external metallization of polymers, enable the design of these geometries but require the processing of low dielectric-loss polymers in additive manufacturing. Arising from prevailing limitations on additively manufactured low-loss components, this study investigates the effect of energy density on polypropylene's dielectric properties in powder bed fusion processes. Variations in laser power significantly influenced material density and mechanical characteristics. Both insufficient and excessive energy densities resulted in lower quality parts due to issues like fused particles or inadequate melting. Optimal dimensional accuracy and surface quality were achieved with energy levels slightly below those for peak density. While dielectric loss remained mostly stable, relative permittivity decreased at very low densities, where partial melting occurred. Relying on derived optimized parameters, the functionality of passive high-frequency components was demonstrated.
APA:
Romeis, M., Ehrngruber, M., & Drummer, D. (2024). Investigation of the effects of energy density in Laser Sintering of polypropylene on morphological and dielectric properties for high-frequency antennas. In Michael Schmidt, C.B. Arnold, K. Wudy (Eds.), Procedia CIRP (pp. 257-260). Furth, DEU: Elsevier B.V..
MLA:
Romeis, Manuel, Michael Ehrngruber, and Dietmar Drummer. "Investigation of the effects of energy density in Laser Sintering of polypropylene on morphological and dielectric properties for high-frequency antennas." Proceedings of the 13th CIRP Conference on Photonic Technologies, LANE 2024, Furth, DEU Ed. Michael Schmidt, C.B. Arnold, K. Wudy, Elsevier B.V., 2024. 257-260.
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