Effects of thermoplastic resin content on mode-Ⅱ interlaminar fracture toughness of carbon fiber reinforced epoxy composite
Dai-jun ZHANG1,2,*(), Jun CHEN1, Jian-wen BAO2,3,4, Xiang-yu ZHONG2,3,4, Xiang-bao CHEN1,2
1 AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China 2 National Key Laboratory of Advanced Composites, Beijing 100095, China 3 AVIC Composite Center, Beijing 101300, China 4 AVIC Composite Corporation Ltd., Beijing 101300, China
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-Ⅱ interlaminar 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-Ⅱ interlaminar fracture toughness of the composite is increased under the concurrent actions of the toughness and thickness of the interlayer resin.
BAO J W , ZHONG X Y , ZHANG D J , et al. Progress in high strength intermediate modulus carbon fiber and its high toughness resin matrix composites in China[J]. Journal of Materials Engineering, 2020, 48 (8): 33- 48.
QIAO H T , LIANG B , ZHANG J Y , et al. Development and application of adhesive materials for advanced composite bonding[J]. Journal of Materials Engineering, 2018, 46 (12): 38- 47.
LIU G , ZHANG D J , ZHANG H , et al. Mechanical properties of nanoparticles modified epoxy matrix and composites[J]. Journal of Materials Engineering, 2010, (1): 47- 53.
ZHONG X Y , ZHANG D J , BAO J W , et al. Influence of content of toughening thermoplastic on mode-Ⅰ interlaminar fracture toughness of epoxy composite reinforced by CCF800H carbon fiber[J]. Journal of Materials Engineering, 2017, 45 (8): 55- 61.
ZHONG X Y , ZHANG D J , BAO J W , et al. Effect of toughening thermoplastic particles content on impact resistance of epoxy matrix composite reinforced by domestic intermediate modulus carbon fiber[J]. Journal of Solid Rocket Technology, 2017, 40 (3): 372- 379.
HOSSEIN S , MEHDI B , MUTLU S . Mode-Ⅱ interlaminar fracture toughness of carbon/epoxy laminates[J]. Iranian Polymer Journal, 2003, 12 (5): 389- 400.
VOLKER A , DALE G , MICHAEL S , et al. Interlaminar crack growth in third-generation thermoset prepreg system[J]. Polymer, 1993, 34 (4): 907- 909.