Flexure behaviors of ABS-based composites containing carbon and Kevlar fibers by material extrusion 3D printing

Kui Wang, Shixian Li, Yanni Rao, Yiyun Wu, Yong Peng, Song Yao, Honghao Zhang, Said Ahzi

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1 Citation (Scopus)

Abstract

Short-fiber-reinforced thermoplastics are popular for improving the mechanical properties exhibited by pristine thermoplastic materials. Due to the inherent conflict between strength and ductility, there are only a few successful cases of simultaneous enhancement of these two properties in polymer composite components. The objective of this work was to explore the feasibility of simultaneous enhancement of strength and ductility in ABS-based composites with short-carbon and Kevlar fiber reinforcement by material extrusion 3D printing (ME3DP). Microstructure characterization and measurement of thermal and mechanical properties were conducted to evaluate the fiber-reinforced ABS. The influence of printing raster orientation and build direction on the mechanical properties of material extrusion of 3D-printed composites was analyzed. Experimental results demonstrated that the reinforcement of the ABS-based composites by short-carbon and Kevlar fibers under optimized 3D-printing conditions led to balanced flexural strength and ductility. The ABS-based composites with a raster orientation of ±45° and side build direction presented the highest flexural behaviors among the samples in the current study. The main reason was attributed to the printed contour layers and the irregular zigzag paths, which could delay the initiation and propagation of microcracks.

Original languageEnglish
Article number1878
JournalPolymers
Volume11
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

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Keywords

  • Build direction
  • Flexural behavior
  • Material extrusion 3D printing
  • Raster orientation
  • Short fiber reinforcements

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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