Laser Sintering of Pine/Polylatic Acid Composites
| dc.creator | Zhang, Hui | |
| dc.creator | Bourell, David L. | |
| dc.creator | Guo, Yanling | |
| dc.creator | Li, Jian | |
| dc.creator | Zhang, Xiaodong | |
| dc.creator | Zhuang, Yu | |
| dc.creator | Li, Zhipeng | |
| dc.date.accessioned | 2021-11-18T02:22:27Z | |
| dc.date.available | 2021-11-18T02:22:27Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | A new powder feedstock composed of sustainable and degradable biomass composite material was proposed for laser sintering technology in this research. This biomass mixture, abbreviated P-PLA, is made up of mechanically mixed polylactic acid (PLA) powder and pine powder. The proper processing parameters were determined based on the component thermal behavior and laser sintering testing: processing temperature 130-135°C, laser power 20-24 W, scan spacing 0.1-0.2 mm, scan speed 1.6-2.2 m/s and layer thickness 0.2mm. Laser-sintered P-PLA parts exhibited much better mechanical properties compared with pine/polyethersulfone copolyester (PCoPES) wood-plastic composite, with tensile strength 34-200% higher and flexural strength 92- 246% higher than values for laser-sintered P-CoPES. Results reveal that pine powder loading can reduce the shrinkage and deformation of laser-sintered P-PLA parts. Shrinkage decreased from 4% to 0.31-2.27% in the XY plane and from 3.25% to 0.13-2.25% in the Z direction. | en_US |
| dc.description.department | Mechanical Engineering | en_US |
| dc.identifier.uri | https://hdl.handle.net/2152/90413 | |
| dc.identifier.uri | http://dx.doi.org/10.26153/tsw/17334 | |
| dc.language.iso | eng | en_US |
| dc.publisher | University of Texas at Austin | en_US |
| dc.relation.ispartof | 2019 International Solid Freeform Fabrication Symposium | en_US |
| dc.rights.restriction | Open | en_US |
| dc.subject | laser sintering | en_US |
| dc.subject | biomass composites | en_US |
| dc.subject | pine-polylactic acid | en_US |
| dc.subject | mechanical properties | en_US |
| dc.subject | microstructures | en_US |
| dc.subject | dimensional accuracy | en_US |
| dc.title | Laser Sintering of Pine/Polylatic Acid Composites | en_US |
| dc.type | Conference paper | en_US |