Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser SinteringReport as inadecuate




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1

Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075 Singapore, Singapore

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Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK

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School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore





*

Author to whom correspondence should be addressed.



Academic Editor: Xiao ‘Matthew’ Hu

Abstract The thermal influence of carbon nanotubes CNTs on the PA12 in the laser sintering process was assessed by physical experiments and a three dimensional simulation model. It appears that, by adding the CNTs into the PA12 matrix, the thermal conductivity increased. A double ellipsoidal heat flux model was applied to input a three dimensional, continuous moving, volumetric laser heat source. The predicted three dimensional temperature distributions suggested that the laser heat was conducted wider and deeper in the PA12-CNT sample than PA12. Greater heat conduction can reduce the interspace between two successive layers, and result in the increase of the parts’ density and properties. View Full-Text

Keywords: selective laser sintering; thermal influence; numerical simulation; polymer nanocomposites selective laser sintering; thermal influence; numerical simulation; polymer nanocomposites





Author: Jiaming Bai 1,* , Ruth D. Goodridge 2, Shangqin Yuan 1,3, Kun Zhou 3, Chee Kai Chua 3 and Jun Wei 1

Source: http://mdpi.com/



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