About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
|
Materials
|
Presentation Title |
Additive Manufacturing of Magneto-active, Shape Programmable Thermoset Composite Laminates via Reactive Extrusion |
Author(s) |
Oliver L. Uitz, Ademola Oridate, Rui Leng, Tan Pan, Carolyn Seepersad, Zoubeida Ounaies, Mary Frecker |
On-Site Speaker (Planned) |
Oliver L. Uitz |
Abstract Scope |
Reactive extrusion additive manufacturing (REAM) systems create parts by mixing and depositing thermosetting polymer feedstocks with a robotically guided extrusion nozzle. The resulting structures cure in situ, ideally in ambient conditions. The resin and hardener feedstocks exist in liquid form prior to deposition by the REAM system, allowing active additives to be mixed into them prior to deposition. In this application, iron oxide particles are mixed with an elastomeric precursor to produce a magneto-active elastomer (MAE). By pairing a shape memory polymer (SMP) with the MAE, a laminated unimorph structure is REAM fabricated in which the SMP is actuated with the MAE. The laminates are then “shape programmed” in a hands free manner by heating the SMP above its glass transition temperature, applying an external magnetic field to induce deformation in the unimorph, and then cooling the SMP below its glass transition temperature to ‘lock’ the deformation in place. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |