3RD INTERNATIONAL CONGRESS ON TECHNOLOGY - ENGINEERING & SCIENCE - Kuala Lumpur - Malaysia (2017-02-09)

Comparison Of Bulk Strength, Weldline Strength Of Fossil-based Pc/bio-based Pc Blend, And Deposition Strength Of A 3d Printed Article
Currently, there is an increasing demand for bioplastics exhibiting ecofriendly and outstanding material properties. Fossil-based PC, which is based on oil resources, is formed by the polymerization of bisphenol-A, while bio-based PC is an ecofriendly plastic formed by the polymerization of isosorbide, which is extracted from corn starch. This study comparatively analyzed the bulk strength and weldline strength of injection molding samples using blends composed of fossil-based PC and bio-based PC and the deposition strength of fused deposition modeling (FDM) type 3D printed articles. The process temperature did not significantly affect bulk strength, while weldline strength slightly increased with process temperature. With respect to the FDM type 3D printed articles, with increasing process temperature, no difference in the elongation rate in fractures and deposition strength was observed in the deposition direction. However, with increasing process temperature, the deposition strength and elongation rate in fractures proportionally increased in the perpendicular deposition direction. Bulk strength was approximately 56.52 MPa, and weldline strength was approximately 55.01 MPa, accounting for 97.34% of bulk strength. In addition, the deposition strength of the 3D printed article in the deposition direction was approximately 44.1 MPa, while that in the perpendicular deposition direction was approximately 29.08 MPa. The deposition strength of the 3D printed article in the deposition direction was 80.16% of the weldline strength, while that of the 3D printed article in the perpendicular deposition direction was 52.86%. In addition, the deposition strength of the 3D printed article in the perpendicular deposition direction was 65.94%.
Jung Hyun Park, Seong Je Park, Myung Sool Koo, Sung Hwan Cho, Hyung Jin Roh, Min-Young Lyu