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Molecules 2015, 20(10), 19041-19050; doi:10.3390/molecules201019041

Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering

1
Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, 638075 Singapore, Singapore
2
Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
3
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798 Singapore, Singapore
*
Author to whom correspondence should be addressed.
Academic Editor: Xiao ‘Matthew’ Hu
Received: 17 September 2015 / Revised: 2 October 2015 / Accepted: 14 October 2015 / Published: 20 October 2015
View Full-Text   |   Download PDF [1551 KB, uploaded 20 October 2015]   |  

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
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bai, J.; Goodridge, R.D.; Yuan, S.; Zhou, K.; Chua, C.K.; Wei, J. Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering. Molecules 2015, 20, 19041-19050.

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