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Mechanical properties and microstructure of coordination toughened epoxy based composites
Author(s) -
Yanan He,
Ruocheng Wang,
Wei Zhao,
Hongwei Kang,
Chenxi Zhang,
Haiyun Jin,
g Gao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/2/022029
Subject(s) - epoxy , materials science , toughening , microstructure , composite material , ultimate tensile strength , fumed silica , izod impact strength test , casting , toughness
In this paper, toughening epoxy based composites were fabricated, the mechanical properties were measured and the microstructure was observed, the performance changes of epoxy casting system under different components were compared and analysed, coordination effect of multi-toughened was also investigated. Results showed that, the toughening agent and fumed silica as toughening fillers had the best strengthening and toughening effect on epoxy matrix with the addition of 4wt.% and 3wt.% respectively. Finally, by combining the different influence mechanism of the two fillers on the matrix, the comprehensive properties of the epoxy casting insulating materials were further improved. The results showed that the synergistic effect was obtained when the two fillers were blended with 3 wt.% toughener and 1 wt.% fumed silica. The tensile strength and impact strength were 67.42MPa and 13.69kJ/m2, which were 67.51% and 37.15% higher than those of pure epoxy.

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