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Journal of Materials Science

, Volume 30, Issue 19, pp 4761–4769 | Cite as

Matrix morphology and fibre pull-out strength of T700/PPS and T700/PET thermoplastic composites

  • Lin Ye
  • T. Scheuring
  • K. Friedrich
Article

Abstract

The main objective of this fundamental study was to investigate effects of processing conditions and resulting matrix morphology on interfacial bond strength of fibre reinforced thermoplastic composites. Using a hot stage microscope, single fibre pull-out samples were produced with T700S high strength carbon fibre and two semicrystalline thermoplastic matrices, polyphenylene sulphide (PPS) and polyethylene terephthalate (PET), respectively. Processing temperatures and cooling histories were the major variables in sample preparation. The T700S fibre had no clear effect on the surrounding PPS and PET matrix morphology, as long as direct cooling at constant rates was selected. A transcrystalline phase around the fibres could be induced in the T700S/PPS system, if isothermal crystallization was carried out at 227°C. Fibre pull-out tests were conducted at room temperature and two basic failure paths were observed, i.e. debonding at the fibre-matrix interface and cohesive failure of the matrix close to the fibre surface. The results indicate that slow cooling rate and a resulting coarse spherulitic morphology around the fibres correlate with high interfacial shear strength. In fact somewhat higher strength values were obtained for samples with transcrystalline layers around the fibres.

Keywords

Interfacial Shear Strength Thermoplastic Composite Spherulitic Morphology Matrix Morphology Polyphenylene Sulphide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Lin Ye
    • 1
  • T. Scheuring
    • 2
  • K. Friedrich
    • 2
  1. 1.Centre for Advanced Materials Technology, Department of Mechanical and Mechatronic EngineeringThe University of SydneyAustralia
  2. 2.Institute for Composite Materials Ltd.University of KaiserslauternKaiserslauternGermany

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