Synergistic toughening of thermoplastic particles-inorganic particles to carbon fiber reinforced epoxy resin composites

被引：0
|
作者：
Liu X. [1 ]
Chen D. [1 ]
He H. [1 ]
Sun T. [1 ]
Wu Z. [1 ]
机构：
[1] School of Aeronautics and Astronautics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 08期
关键词：
Composites; Inorga-nic nano particles; Interlaminar fracture toughness; Synergistic toughen; Thermoplastic particles;
D O I：
10.13801/j.cnki.fhclxb.20191113.006
中图分类号：
学科分类号：
摘要：
The interlaminar fracture toughness of carbon fiber reinforced epoxy resin (CF/EP) composites was studied. The type II interlaminar fracture toughness (GIIC) was studied by adding four kinds of inorganic nano-particles and three kinds of thermoplastic particles into the interlaminar of CF/EP composites. One kind of inorganic nano-particle and one kind of thermoplastic particles with good operability and tougheness effect were selected to study the synergistic toughening property. The results show that the GIIC of CF/EP composites is improved with appropriate inorganic nano-particle, which is mainly due to the micro-structure formation between layers and fracture energy absorbed effectively. The comprehensive properties of nano sheet boehmite (AlOOH) are the best. When the content of AlOOH nano particles is 1wt%, the GIIC of CF/EP composites reaches 931 J/m2, which increases by 29.3%. Among the thermoplastic particles, the modified poly (aryl ether ketone) (PAEK) has the best comprehensive properties. Adding 10 wt%PAEK in the layers, the GIIC of the CF/EP composite can be increased by 32%. This is due to the diffusion of thermoplastic particles between layers along with the flow of EP matrix, forming a unique interlaminar continuous structure, which increases the resistance of crack propagation and effectively improves GIIC of the CF/EP composites. The GIIC of the CF/EP composites toughened by both 10wt%PAEK and 1wt%AlOOH reaches 1 368 J/m2, compared with the non-toughened CF/EP composites, which is increased by 90%. The toughening effect is greater than the sum of adding PAEK and AlOOH. This shows that the addition of both PAEK and AlOOH into the interlayer of CF/EP composites has a synergistic toughening effect. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：1904 / 1910
页数：6
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