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Dimensional stability and mechanical performance evolution of continuous carbon fiber reinforced polyamide 6 composites under hygrothermal environment

  • Yongpeng Lei*
  • , Tao Zhang
  • , Jifeng Zhang*
  • , Boming Zhang
  • *Corresponding author for this work
  • Harbin Engineering University
  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to investigate moisture absorption behaviors, dimensional stability, and mechanical performance evolution of continuous carbon fibers reinforced with polyamide 6 composites (CF/PA6) under a hygrothermal environment. 3D Fickian model determined the principal three-dimensional (3D) diffusion coefficients by using an optimization algorithm. Three-dimensional changes of samples were measured to quantify the relationship between swelling coefficient and water content. After hygrothermal aging, the tensile properties of PA6 resin and CF/PA6 composites in the transverse direction decreased significantly, but the longitudinal tensile properties of CF/PA6 composites were insensitive to hygrothermal aging. DMA (Dynamic Mechanical Analysis), SEM (Scanning Electron Microscopy) and FTIR (Fourier Transform Infrared) tests were also applied to analyze the mechanism of mechanical properties degradation.

Original languageEnglish
Pages (from-to)2126-2137
Number of pages12
JournalJournal of Materials Research and Technology
Volume13
DOIs
StatePublished - 1 Jul 2021

Keywords

  • Continuous carbon fiber reinforced polyamide 6 composites
  • Dimensional stability
  • Hygrothermal aging
  • Tensile properties

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