Effect of hygrothermal aging on polyetherimide composites


Arici A. A.

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, vol.26, no.18, pp.1937-1942, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 18
  • Publication Date: 2007
  • Doi Number: 10.1177/0731684407082630
  • Title of Journal : JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
  • Page Numbers: pp.1937-1942
  • Keywords: polymer-matrix composites, hygrothermal effect, mechanical properties, INTERLAMINAR SHEAR-STRENGTH, CARBON/PEI COMPOSITES, IMPACT BEHAVIOR, GLASS, MOISTURE, ILSS

Abstract

The aim of this study is to investigate the effect of hygrothermal aging on both the static and thermo-mechanical behavior of polyetherimide composites. Tensile testing and dynamic mechanical thermal analysis were performed on the hygrothermally aged polyetherimide composites in the climatic cabin. The decrease in the T-g temperature, also following a decrease in the yield energy, indicated the plasticization for hygrothermally aged glass fiber reinforced PEI composite, but both tensile and DMTA analysis pointed out that glass fiber reinforced PEI composite retained its static and dynamic behavior on a large scale. The higher thermal expansion mismatch problem between carbon fiber and PEI matrix caused a remarkable decrease in the static energy values of the composite.