Material Evaluation and Process Optimization of CNT-Coated Polymer Powders for Selective Laser Sintering
AbstractMulti-walled carbon nanotubes (CNTs) as nano-reinforcements were introduced to facilitate the laser sintering process and enhance the thermal and mechanical properties of polymeric composites. A dual experimental-theoretical method was proposed to evaluate the processability and predict the process parameters of newly developed CNT-coated polyamide 12 (CNTs/PA12) powders. The thermal conductivity, melt viscosity, phase transition and temperature-dependent density and heat capacity of PA12 and CNTs/PA12 powders were characterized for material evaluation. The composite powders exhibited improved heat conduction and heat absorption compared with virgin polymer powders, and the stable sintering range of composite powders was extended and found to be favourable for the sintering process. The microstructures of sintered composites revealed that the CNTs remained at the powder boundaries and formed network architectures, which instantaneously induced the significant enhancements in tensile strength, elongation at break and toughness without sacrificing tensile modulus. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Yuan, S.; Bai, J.; Chua, C.K.; Wei, J.; Zhou, K. Material Evaluation and Process Optimization of CNT-Coated Polymer Powders for Selective Laser Sintering. Polymers 2016, 8, 370.
Yuan S, Bai J, Chua CK, Wei J, Zhou K. Material Evaluation and Process Optimization of CNT-Coated Polymer Powders for Selective Laser Sintering. Polymers. 2016; 8(10):370.Chicago/Turabian Style
Yuan, Shangqin; Bai, Jiaming; Chua, Chee K.; Wei, Jun; Zhou, Kun. 2016. "Material Evaluation and Process Optimization of CNT-Coated Polymer Powders for Selective Laser Sintering." Polymers 8, no. 10: 370.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.