| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Polymeric-based Materials: Potentials and Challenges
|
| Presentation Title |
Design and Additive Manufacturing of Polyethylene-Based Hierarchical Composites by Selective Laser Sintering |
| Author(s) |
Muxuan Yang |
| On-Site Speaker (Planned) |
Muxuan Yang |
| Abstract Scope |
Selective laser sintering is a promising 3D printing technology due to its unique advantages like the ability to print complex geometry without supporting structures, highly uniformity. One of the main challenges for SLS is the limited types of compatible polymer microparticles. We developed a versatile material platform for the scalable synthesis of polyethylene and its composite microparticles for SLS 3D printing. The incorporation of metal oxide nanoparticles inside PE microparticles by in situ sol-gel chemistry as well as blending with carbon black for enhanced laser absorption was found to have significant impacts on the printability and physical properties of printed structures. Post-printing processing like thermal annealing improves the mechanical strength and modulus by more than ten times. Electrochemical deposition of copper on the 3D PE composite structures significantly enhances the electrical conductivity and mechanical properties, which can be utilized to fabricate 3D hierarchical metallic structures with broad applications. |