About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Broad Issues in AM
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Presentation Title |
Evaluation of Real-time Particle and Chemical Emissions from Large-format Additive Manufacturing Machines |
Author(s) |
Elizabeth D. Arnold, Aleksandr Stefaniak, Lauren Bowers, Alycia Knepp, Austin Schmidt, Andrew Bader |
On-Site Speaker (Planned) |
Elizabeth D. Arnold |
Abstract Scope |
As use of large-format additive manufacturing (LFAM) machines becomes more prevalent, there is an increased need for information regarding emissions during LFAM material extrusion. Particle number and total volatile organic compound (TVOC) concentrations were monitored during extrusion of six different polymers from two LFAM machines. The polymers were acrylonitrile butadiene styrene (ABS); polycarbonate (PC); and high-melt-temperature polymers including polysulfone (PSU), poly(ether sulfone) (PESU), polyphenylene sulfide (PPS), and Ultem (poly(ether imide)), for which little data exists. Particle emission rates (no./min) ranged from 1.1 × 1012 (ABS) to 9.7 × 1012 (PC). TVOC emission yields for print jobs ranged from 0.005 mg/g extruded (PESU) to 0.7 mg/g extruded (ABS). The use of wall-mounted exhaust ventilation fans had no significant impact on particle emission levels (p < 0.05). Engineering controls such as local exhaust ventilation could be implemented to reduce particle and chemical emissions from LFAM machines. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |