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

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

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 mode...

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Bibliographic Details
Main Authors: Bai, Jiaming, Goodridge, Ruth D., Yuan, Shangqin, Zhou, Kun, Chua, Chee Kai, Wei, Jun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2015
Subjects:
Selective laser sintering
Thermal influence
Numerical simulation
Polymer nanocomposites
Online Access:https://hdl.handle.net/10356/81070
http://hdl.handle.net/10220/39110
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Institution: Nanyang Technological University
Language: English
Description
Summary: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.

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