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J. Compos. Sci.
Volume 6
Issue 2
10.3390/jcs6020041
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Article

Selective Laser Sintering of High-Temperature Thermoset Polymer

by
Md Sahid Hassan
1,2,*,
Kazi Md Masum Billah
3,
Samuel Ernesto Hall
1,2,
Sergio Sepulveda
1,2,
Jaime Eduardo Regis
1,2,
Cory Marquez
1,2,
Sergio Cordova
1,
Jasmine Whitaker
4,
Thomas Robison
4,
James Keating
5,
Evgeny Shafirovich
1 and
Yirong Lin
1,2,*
1
Department of Mechanical Engineering, The University of Texas at El Paso, El Paso, TX 79968, USA
2
W.M. Keck Center for 3D Innovation, The University of Texas at El Paso, El Paso, TX 79968, USA
3
Mechanical Engineering Program, University of Houston-Clear Lake, Houston, TX 77058, USA
4
Honeywell FM&T, Kansas City, MO 64147, USA
5
Imitec Inc., Schenectady, New York, NY 12308, USA
*
Authors to whom correspondence should be addressed.
J. Compos. Sci. 2022, 6(2), 41; https://doi.org/10.3390/jcs6020041
Submission received: 28 November 2021 / Revised: 10 January 2022 / Accepted: 14 January 2022 / Published: 24 January 2022
(This article belongs to the Special Issue Additive Manufacturing of Composites and Nanocomposites)
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Abstract

Thermoplastic materials such as PA12 and PA6 have been extensively employed in Selective Laser Sintering (SLS) 3D printing applications due to their printability, processability, and crystalline structure. However, thermoplastic-based materials lack polymer inter-chain bonding, resulting in inferior mechanical and thermal properties and relatively low fatigue behavior. Therefore, 3D printing of high-performance crosslinked thermosets using SLS technology is paramount to pursue as an alternative to thermoplastics. In this work, a thermoset resin was successfully 3D printed using SLS, and its thermal stability of printed parts after a multi-step post-curing process was investigated. Dimensionally stable and high glass transition temperature (Tg: ~300 °C) thermoset parts were fabricated using SLS. The polymer crosslinking mechanism during the printing and curing process was investigated through FTIR spectra, while the mechanical stability of the SLS 3D-printed thermoset was characterized through compression tests. It is found that 100% crosslinked thermoset can be 3D printed with 900% higher compressive strength than printed green parts.
Keywords: selective laser sintering (SLS); printability; thermoset; thermal stability; glass transition temperature; polymer crosslinking; mechanical stability; compressive strength selective laser sintering (SLS); printability; thermoset; thermal stability; glass transition temperature; polymer crosslinking; mechanical stability; compressive strength

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MDPI and ACS Style

Hassan, M.S.; Billah, K.M.M.; Hall, S.E.; Sepulveda, S.; Regis, J.E.; Marquez, C.; Cordova, S.; Whitaker, J.; Robison, T.; Keating, J.; et al. Selective Laser Sintering of High-Temperature Thermoset Polymer. J. Compos. Sci. 2022, 6, 41. https://doi.org/10.3390/jcs6020041

AMA Style

Hassan MS, Billah KMM, Hall SE, Sepulveda S, Regis JE, Marquez C, Cordova S, Whitaker J, Robison T, Keating J, et al. Selective Laser Sintering of High-Temperature Thermoset Polymer. Journal of Composites Science. 2022; 6(2):41. https://doi.org/10.3390/jcs6020041

Chicago/Turabian Style

Hassan, Md Sahid, Kazi Md Masum Billah, Samuel Ernesto Hall, Sergio Sepulveda, Jaime Eduardo Regis, Cory Marquez, Sergio Cordova, Jasmine Whitaker, Thomas Robison, James Keating, and et al. 2022. "Selective Laser Sintering of High-Temperature Thermoset Polymer" Journal of Composites Science 6, no. 2: 41. https://doi.org/10.3390/jcs6020041

APA Style

Hassan, M. S., Billah, K. M. M., Hall, S. E., Sepulveda, S., Regis, J. E., Marquez, C., Cordova, S., Whitaker, J., Robison, T., Keating, J., Shafirovich, E., & Lin, Y. (2022). Selective Laser Sintering of High-Temperature Thermoset Polymer. Journal of Composites Science, 6(2), 41. https://doi.org/10.3390/jcs6020041

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