Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering
Abstract
:1. Introduction
2. Experimental Approach
2.1. Materials
2.2. Density
2.3. Thermal Conductivity
2.4. Specific Heat
Property | PA12 | PA12-CNT |
---|---|---|
Density (ρ), kg/m3 | 445.0 (±0.1) | 445.4 (±0.1) |
Thermal conductivity (k), W/(mK) | 0.111 (±0.003) | 0.131 (±0.005) |
Specific heat (Cp), J/(kgK) | 2660.0 (±2.5) | 2500.0 (±5.5) |
Glass transition temperature (Tg), °C | 58.5 (±0.1) | 58.5 (±0.1) |
Melting temperature (Tm), °C [4] | 183.4 (±0.2) | 184.0 (±0.2) |
3. Modelling Approach
3.1. Materials Properties
3.2. Laser Heat Source
3.3. Boundary Conditions and Interactions
Component | Value |
---|---|
Laser power (P), W | 25 |
Laser scan speed (V), m/s | 2.5 |
Laser scan space (H), mm | 0.25 |
Laser beam diameter (D), mm | 0.42 |
Environment temperature (Tenv), °C | 172 |
Initial and semi-infinite boundary temperature (T0), °C | 172 |
Convection coefficient (h), W/m2k | 25 |
3.4. Temperature Distribution
3.5. Melting Depth
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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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. https://doi.org/10.3390/molecules201019041
Bai J, Goodridge RD, Yuan S, Zhou K, Chua CK, Wei J. Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering. Molecules. 2015; 20(10):19041-19050. https://doi.org/10.3390/molecules201019041
Chicago/Turabian StyleBai, Jiaming, Ruth D. Goodridge, Shangqin Yuan, Kun Zhou, Chee Kai Chua, and Jun Wei. 2015. "Thermal Influence of CNT on the Polyamide 12 Nanocomposite for Selective Laser Sintering" Molecules 20, no. 10: 19041-19050. https://doi.org/10.3390/molecules201019041