Effects of thermoplastic resin content on mode-Ⅱinterlaminar fracture toughness of carbon fiber reinforced epoxy composite

作者：Zhang, Dai-Jun^*; Chen, Jun; Bao, Jian-Wen; Zhong, Xiang-Yu; Chen, Xiang-Bao

来源：Journal of Materials Engineering, 2021, 49(6): 178-184.

DOI：10.11868/j.issn.1001-4381.2021.000124

• Carbon fiber reinforced
• Epoxy-matrix composite
• Filtering effects
• High strength
• Interlaminar fracture toughness
• Thermoplastic toughening
• Toughening agents

Epoxy-matrix composites reinforced by CCF800H, the domestic high strength intermediate modulus carbon fiber, were prepared. Thermoplastic resin was used as the toughening agent of the resin. Through regulating the content of toughening particle in the epoxy resin, effects of the content of toughening agent on the mode-Ⅱinterlaminar fracture toughness of the composite were investigated. The results show that the thermoplastic toughening particles gather at the interlayers of the composite with the filtering effect of the carbon fibers on those particles. The interlayers get thicker with the increasing of the toughening agent. The mode-Ⅱinterlaminar fracture toughness of the composite is increased under the concurrent actions of the toughness and thickness of the interlayer resin.