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
Published in:Molecules (Basel, Switzerland) Switzerland), 2015-10, Vol.20 (10), p.19041-19050
Main Authors: Bai, Jiaming, Goodridge, Ruth D, Yuan, Shangqin, Zhou, Kun, Chua, Chee Kai, Wei, Jun
Format: Article
Language:English
Subjects:
Additive manufacturing
Bottlenecks
Carbon
Computer simulation
Conductivity
Electric Conductivity
Electronic mail systems
Heat conductivity
Laser sintering
Lasers
Models, Theoretical
Morphology
Nanocomposites
Nanocomposites - chemistry
Nanotubes, Carbon - chemistry
numerical simulation
Nylons - chemistry
polymer nanocomposites
Polymers
Radiation
selective laser sintering
Thermal Conductivity
thermal influence
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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.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules201019041