About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
A framework with examples for printing thermosetting polymers using laser powder bed fusion additive manufacturing |
Author(s) |
Camden A. Chatham, Aaron L Washington |
On-Site Speaker (Planned) |
Camden A. Chatham |
Abstract Scope |
Thermoset polymers share traits arising from their covalently crosslinked network structure that are distinct from thermoplastic polymers. These traits can manifest as relative increases in the performance properties of chemical resistance, stiffness, and strength particularly at elevated temperature. Although these performance properties are desired from additively manufactured parts, there are few engineering grade thermosetting polymers commercially available for any AM fabrication method. This presentation describes some of the challenges when processing and formulating thermosetting polymeric powder feedstocks for the laser powder bed fusion (L-PBF) mode of AM. In addition to this framework, the presentation includes a comparison of three different thermosetting polymers made via L-PBF and isothermal oven curing (i.e., cured per supplier direction). The differences in resultant performance properties and polymer network are characterized. Hypotheses of structure-process-structure-property relationships are also presented. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |