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Establishment of interlaminar structure and crack propagation in carbon fiber reinforced epoxy composites by interleaving CNTs/PEK-C film
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  • Hongfu LI,
  • Jiawei YAO,
  • Ying WU,
  • Kangmin NIU
Hongfu LI
University of Science and Technology Beijing School of Materials Science and Engineering

Corresponding Author:[email protected]

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Jiawei YAO
University of Science and Technology Beijing School of Materials Science and Engineering
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Ying WU
University of Science and Technology Beijing School of Materials Science and Engineering
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Kangmin NIU
University of Science and Technology Beijing School of Materials Science and Engineering
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Abstract

The synergistic combination of carbon nanotubes (CNTs) and ductile thermoplastic resin has shown large potential in the improvement of fracture resistance for the epoxy matrix composites using the interleaving toughening method in recent years. The hybrid structure of CNTs and thermoplastic resin in interlayers affects directly the interlaminar structure and the resultant crack propagation path of the interleaved composites. In this work, the CNTs and thermoplastic polyetherketone-cardo (PEK-C) were used to prepare the interlayer with different hybrid structures to interleave the carbon fiber reinforced epoxy composites and the influence of hybrid structure on the interlaminar structure and the fracture toughness was investigated. The results showed that PEK-C/CNT/PEK-C sandwich interlayer produced the best toughening effect in mode I interlaminar fracture toughness (GIC) and the GIC was 446.76 J/m 2, increased by 138.11% compared to blank composites, which benefited from the multilayered structure in the interlaminar region formed during curing process and the resultant tortuous crack propagation.
14 Apr 2022Submitted to Fatigue & Fracture of Engineering Materials & Structures
23 Apr 2022Submission Checks Completed
23 Apr 2022Assigned to Editor
24 Apr 2022Reviewer(s) Assigned
12 May 2022Review(s) Completed, Editorial Evaluation Pending
18 May 2022Editorial Decision: Revise Major
14 Jul 20221st Revision Received
14 Jul 2022Submission Checks Completed
14 Jul 2022Assigned to Editor
14 Jul 2022Reviewer(s) Assigned
14 Jul 2022Review(s) Completed, Editorial Evaluation Pending
31 Jul 2022Editorial Decision: Revise Major
17 Aug 20222nd Revision Received
17 Aug 2022Submission Checks Completed
17 Aug 2022Assigned to Editor
17 Aug 2022Review(s) Completed, Editorial Evaluation Pending
17 Aug 2022Editorial Decision: Accept