| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XII
|
| Presentation Title |
Friction Extrusion of Thermoplastics: Manufacturing and Recycling |
| Author(s) |
Xiao Li, Tianhao Wang, Russ Burnett, Aye Meyer, Yelin Ni, Wenbin Kuang, Kevin Simmons |
| On-Site Speaker (Planned) |
Xiao Li |
| Abstract Scope |
Plastic waste is an urgent global issue for environmental protection and sustainable energy. The existing methods of recycling end-of-user mixed plastics are energy-inefficient and uneconomic. This work developed friction extrusion as a new technology that manufactures and recycles thermoplastics with high energy efficiency and low cost. Single stream Polypropylene (PP), Polyethylene (PE), and Acrylonitrile butadiene styrene (ABS) filaments were extruded respectively from powder, pellet, or solid billet precursors. Mixed plastics were also recycled into a homogeneous composite filament via single-step friction extrusion. The crystallinity of the filaments was determined by Differential Scanning Calorimetry (DSC) and correlated with process thermal history. Tensile properties were tested and compared to the raw materials. The energy efficiency of friction extrusion plastic recycling was estimated, and the economic impact of the technology is discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Polymers, Recycling and Secondary Recovery, Process Technology |