Rheology, crystal structure, and nanomechanical properties in large-scale additive manufacturing of polyphenylene sulfide/carbon fiber composites

Peng Liu, Ralph B. Dinwiddie, Jong K. Keum, Rama K. Vasudevan, Stephen Jesse, Ngoc A. Nguyen, John M. Lindahl, Vlastimil Kunc

Research output: Contribution to journalArticlepeer-review

Abstract

Extrusion based high-throughput Additive Manufacturing (AM) provides a rapid and versatile approach for producing complex structures by using a variety of polymer materials. An underexplored aspect of this technique is concerned with the formation of interfaces between successively deposited layers. This is particularly important for large-scale additive manufacturing of semi-crystalline polymers because of the highly non-isothermal conditions involved, which influence both nucleation and crystal growth. The objective of this work is to investigate the microstructure and the corresponding viscoelastic properties of carbon fiber (CF) reinforced polyphenylene sulfide (PPS) resulting from extrusion-based high-throughput AM process. Questions on development of morphology focus on polymer crystal structure and carbon fiber orientation in the vicinity of the interface between successive layers. This study attempts to establish a fundamental understanding of the role of the AM has in transferring a set of intrinsic material properties to the macroscopic properties of the final AM structure.

Original languageEnglish (US)
Pages (from-to)263-271
Number of pages9
JournalComposites Science and Technology
Volume168
DOIs
StatePublished - Nov 10 2018
Externally publishedYes

Keywords

  • Additive manufacturing
  • Carbon fiber
  • High-performance polymers
  • Interface
  • Semicrystalline polymer

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Engineering

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