Journal
CHEMICAL PHYSICS LETTERS
Volume 699, Issue -, Pages 14-21Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2018.03.037
Keywords
Carboxyl-terminated butadiene-co-acrylonitrile; Epoxy resin; Mechanical properties; Fracture toughness; Toughening mechanism
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Carboxyl-terminated butadiene-co-acrylonitrile (CTBN) was used as the toughener to improve the mechanical performance and fracture toughness of diglycidyl ether of bisphenol F (DGEBF) by prereacted approach. The results show that the chemical bonding interface was formed between DGEBF and CTBN particles in the prepolymerization reaction process, which remarkably enhances the fracture toughness of the composites. Based on the qualitative and quantitative analyses, it shows the main toughening mechanisms are the plastic shear banding effect resulted from the plastic deformation of the EP matrix and the plastic void expansion because of the debonding of CTBN particles from the EP matrix. (C) 2018 Elsevier B.V. All rights reserved.
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