About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Recycling Carbon Fiber Filled Acrylonitrile-Butadiene-Styrene for Large Format Additive Manufacturing
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Author(s) |
Roo Walker, Tyler Smith, John Lindahl, Christopher Hershey, Vlastimil Kunc, Chad Duty |
On-Site Speaker (Planned) |
Roo Walker |
Abstract Scope |
The recovery, recycling, and reuse of this scrap material as a secondary feedstock material is essential for the feasibility of large-scale AM (LSAM) sustainability. Carbon fiber reinforced acrylonitrile butadiene styrene (CF-ABS) was recycled and used as a secondary LSAM feedstock material to compare printability and mechanical properties against that of virgin feedstock materials. Virgin CF-ABS, or primary feedstock, was melt blended with secondary feedstock to create multiple recycled blends. Each material was printed on the Big Area AM system. Material and mechanical properties were evaluated using a series of tensile, dynamic mechanical analysis, and rheological analysis. Based on injection molded data, the mechanical properties were expected to decrease in proportion to the increase in recycled content, but it was found that some properties improved. By successfully characterizing the impact of incorporating secondary feedstocks in large-scale AM, a pathway can be defined for further reducing material waste and improving AM sustainability. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |