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Materials (Basel). 2017 Mar 24;10(4). pii: E339. doi: 10.3390/ma10040339.

Development and Application of Wood Flour-Filled Polylactic Acid Composite Filament for 3D Printing.

Author information

1
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China. tyblp@aliyun.com.
2
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China. whlmail@yahoo.com.
3
Denton High School, Denton, TX 76203, USA. zelong.li.xdd@gmail.com.
4
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China. lipeng@nefu.edu.cn.
5
Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203, USA. sheldon.shi@unt.edu.

Abstract

This paper presents the development of wood flour (WF)-filled polylactic acid (PLA) composite filaments for a fused deposition modeling (FDM) process with the aim of application to 3D printing. The composite filament consists of wood flour (5 wt %) in a PLA matrix. The detailed formulation and characterization of the composite filament were investigated experimentally, including tensile properties, microstructure, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The feedstock filaments of this composite were produced and used successfully in an assembled FDM 3D printer. The research concludes that compared with pure PLA filament, adding WF changed the microstructure of material fracture surface, the initial deformation resistance of the composite was enhanced, the starting thermal degradation temperature of the composite decreased slightly, and there were no effects on the melting temperature. The WF/PLA composite filament is suitable to be printed by the FDM process.

KEYWORDS:

3D printing; composite filament; fused deposition modeling; polylactic acid; wood flour

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