Fracture behaviour of carbon fibre/epoxy composites interleaved by MWCNT- and graphene nanoplatelet-doped thermoplastic veils. (1st March 2020)

• Record Type: Journal Article
• Authors: Quan, Dong; Mischo, Chiara; Binsfeld, Lucas; Ivankovic, Alojz; Murphy, Neal
• Is Part Of: Composite structures. Volume 235(2020)
• Publication Date: 2020-03-01
• Subjects: Polymer matrix composites -- Fracture toughness -- Thermoplastic veils -- MWCNTs -- Graphene; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2019.111767
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: Polyphenylene-sulfide (PPS) veils doped with MWCNTs and graphene nanoplatelets (GNPs) were used as interleaves of a carbon fibre/epoxy composite, aiming to study its effects on the fracture performance. Interlaying original PPS veils significantly improved the mode-I and mode-II fracture toughness of the laminates due to a PPS fibre bridging mechanism. The addition of MWCNTs on the veils improved the PPS fibre/epoxy adhesion by introducing additional interactions, i.e. MWCNT pull-out and breakage, between the PPS fibres and the epoxy during the fracture process. This further improved the fracture toughness of the laminates at a relatively low content of MWCNTs. In contrast, the incorporation of GNPs on the veils decreased the PPS fibre/epoxy adhesion, resulting in detrimental effects on the fracture performance.