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17 March 2023 High-speed laser exposure of slow photopolymers
Alexander Hochwallner, Wolfgang Steiger, Christian Gorsche, Robert Gmeiner
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Proceedings Volume PC12412, Laser 3D Manufacturing X; PC124120G (2023) https://doi.org/10.1117/12.2650195
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Fast laser curing is essential for highly accurate, high throughput additive manufacturing. High performance resins however exhibit relatively slow curing kinetics. In this talk we elaborate on the question if photopolymers relevant for technological applications can be processed with high-speed laser scanners. This is necessary to develop 3D printing systems that can compete in terms of accuracy and throughput with traditional manufacturing methods but outperform in terms of freedom of design and design agility. We compare exposure times spanning nine orders of magnitude and assess curing depths and double bond conversions obtained with different energy dosages and power densities.
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Alexander Hochwallner, Wolfgang Steiger, Christian Gorsche, and Robert Gmeiner "High-speed laser exposure of slow photopolymers", Proc. SPIE PC12412, Laser 3D Manufacturing X, PC124120G (17 March 2023); https://doi.org/10.1117/12.2650195
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KEYWORDS
Photopolymers
Additive manufacturing
Polymers
Digital micromirror devices
Laser manufacturing
Laser systems engineering
Manufacturing
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