Recycling of carbon fibers from carbon fiber reinforced polymer using electrochemical method

Hongfang Sun, Guanping Guo, Shazim Ali Memon, Weiting Xu, Qiwu Zhang, Ji Hua Zhu, Feng Xing

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

In this research, we proposed an electrochemical method for the recycling of carbon fibers from carbon fiber reinforced polymer (CFRP). Experiments were designed with different solution concentrations (3%, 10%, and 20% NaCl) and various levels of applied current (4 mA, 10 mA, 20 mA, and 25 mA) so as to identify the significant parameters that affect carbon fiber recycling efficiency. The recycled carbon fibers were characterized by using the single fiber tensile strength test, SEM, XRD, and XPS techniques. Test results showed that the maximum tensile strength of the reclaimed carbon fibers was 80% of the virgin carbon fibers (VCF). The increase in electrolyte concentration did not improve the recycling efficiency but resulted in severe oxidation and chlorination on the surface of recycled carbon fibers. From the experimental results, it can be concluded that the recycling of carbon fibers with electrochemical method is simple, effective, and economical.

Original languageEnglish
Pages (from-to)10-17
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume78
DOIs
Publication statusPublished - Aug 19 2015

Keywords

  • A. Carbon fiber
  • A. Polymer-matrix composites (PMCs)
  • A. Recycling
  • D. Surface analysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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