Enhancing the Fracture Toughness of Glass Fiber Reinforced Polyamide 6,6 Composites With the Addition of Chain Extender

Karslı Yılmaz N. G.

POLYMER COMPOSITES, vol.38, no.10, pp.2228-2236, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 10
  • Publication Date: 2017
  • Doi Number: 10.1002/pc.23803
  • Journal Name: POLYMER COMPOSITES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2228-2236
  • Kocaeli University Affiliated: Yes

Abstract

The aim of this study is to improve the fracture toughness of glass fiber reinforced polyamide 6,6 (PA6,6) composites by adding 1,4-phenylene-bis-oxazoline (PBO). Essential work of fracture (EWF) analysis was conducted to analyze the effect of chain extender loading level on the fractural properties of composites. Three different wt% levels of chain extender were used (0.5, 1.0, and 2.0 wt%). Results of EWF analysis revealed that 1.0 wt% PBO addition made a great contribution to the fracture energy of the composites. In addition to this, tensile test results showed that while 1.0 wt% PBO addition resulted in a significant increase in tensile strain of composites, 2.0 wt% PBO addition resulted in a significant increase in tensile strength. Dynamic mechanical analysis test results indicated that 2.0 wt% PBO added composites exhibited the highest storage modulus and the lowest tan delta peak height. Morphological analysis results were also coincided with other test results. (C) 2015 Society of Plastics Engineers