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Improving the mechanical properties of laser-sintered polyamide 12 through incorporation of carbon nanotubes
journal contribution
posted on 2016-05-31, 15:21 authored by Jiaming Bai, Ruth Goodridge, Richard J.M. Hague, Mo SongWell-dispersed nanocomposite powder with spherical morphology and suitable particle size for processing by laser sintering was successfully produced by coating polyamide 12 (PA12) powder particles with carbon nanotubes (CNTs). Flexural, impact, and tensile test specimens produced by laser sintering the PA12-CNT powder showed no distortion and good definition. The density of the PA12-CNT laser-sintered parts was higher than that of neat PA12, which the authors propose is mainly due to higher laser absorption by the CNT particles. Compared to the laser-sintered PA12 parts, PA12-CNT parts showed enhanced flexural, impact, and tensile properties without sacrificing elongation at break. This enhancement may be attributed to the good dispersion of the CNT in the PA12 matrix and denser laser-sintered parts. Considering the low weight percentage of CNT used (0.1 wt%), it would seem that the method used in this work is a cost efficient and effective way to produce polymer nanocomposite powders for laser sintering, while maintaining the optimum powder morphology for the laser sintering process and enhancing the mechanical properties of the laser-sintered part.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
Polymer Engineering and ScienceVolume
53Issue
9Pages
1937 - 1946Citation
BAI, J. ... et al, 2013. Improving the mechanical properties of laser-sintered polyamide 12 through incorporation of carbon nanotubes. Polymer Engineering and Science, 53 (9), pp. 1937 - 1946.Publisher
Wiley / © Society of Plastics EngineersVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2013Notes
This paper is closed access.ISSN
0032-3888eISSN
1548-2634Publisher version
Language
- en