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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.30 No.7 pp.369-375
DOI : https://doi.org/10.3740/MRSK.2020.30.7.369

Mechanical Properties of PVB 3D Printed Output Fumigated with Ethanol

Eun-Young Kang1,2,Ji-Ho Lim3,Seunggon Choi3,Jong Wook Mun4,Yu Kyung Lee4,Sun Kon Lee4†,Dae-Yong Jeong1,3†
1Graduate School of Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
2Daemyoung Technology Co. Ltd, 53-22, Daegotseo-ro 185beon-gil, Daegot-myeon, Gimpo-si, Gyeonggi-do 10043, Republic of Korea
3Department of Materials Science and Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
4Department of Mechanical Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
Corresponding author E-Mail : dyjeong@inha.ac.kr (D.-Y. Jeong, Inha Univ.), sun@inha.ac.kr (S. K. Lee, Inha Univ.)

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 oC for 1, 5, 10, 30, and 50 minutes and the results of the fumigation are compared.

에탄올 훈증처리한 3D 프린팅 PVB 출력물의 기계적 특성

강은영1,2,임지호3,최승곤3,문종욱4,이유경4,이선곤4†,정대용1,3†
1인하대학교 공학대학원, 2(주)대명테크놀로지, 3인하대학교 신소재공학과, 4인하대학교 기계공학과

초록

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