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http://dx.doi.org/10.3740/MRSK.2020.30.7.369

Mechanical Properties of PVB 3D Printed Output Fumigated with Ethanol  

Kang, Eun-Young (Graduate School of Engineering, Inha University)
Lim, Ji-Ho (Department of Materials Science and Engineering, Inha University)
Choi, Seunggon (Department of Materials Science and Engineering, Inha University)
Mun, Jong Wook (Department of Materials Science and Engineering, Inha University)
Lee, Yu Kyung (Department of Materials Science and Engineering, Inha University)
Lee, Sun Kon (Department of Mechanical Engineering, Inha University)
Jeong, Dae-Yong (Graduate School of Engineering, Inha University)
Publication Information
Korean Journal of Materials Research / v.30, no.7, 2020 , pp. 369-375 More about this Journal
Abstract
FDM 3D printing structures have rough surfaces and require post-treatment to improve the properties. Fumigation is a representative technique for removing surface unevenness. Surface treatment by fumigation proceeds by dissolving the surface of the protruding structure using a vaporized solvent. In this study, 3D printed PVB outputs are surface-treated with ethyl-alcohol fumigation. As the fumigation time increases, the surface flattens as ethanol dissolves the mountains on the surface of PVB and the surface valleys are filled with dissolved PVB. Through the fumigation process, the mechanical strength tends to decrease, and deformation rate increases. Ethanol vapor permeates into PVB, widening the distance between chains and resulting in weak bonding strength between chains. In order to confirm the effect of fumigation only, an annealing process is performed at 80 ℃ for 1, 5, 10, 30, and 50 minutes and the results of the fumigation are compared.
Keywords
3D printing; fumigation; ethanol; mechanical properties; PVB;
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