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Mechanical Properties of Nano/Micro-Silica Particles Bidispersed Epoxy Composites

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Abstract:

Mechanical properties of nano/micro-silica particles bidispersed epoxy composites were investigated based on experimental results. The composite specimens varied with different compositions of nano and micro-silica particles (240 nm and 1.56$m) were prepared with the constant volume fraction, 0.30. The thermo-viscoelastic properties for the composites and the neat epoxy measured in the temperature ranges from 123 K to 523 K and compared to theoretical results according to Lewis and Nielsen’s law with the maximum particle packing given by Ouchiyama and Tanaka’s model. In addition, fragility derived from the thermo-viscoelasticity measurements was used to characterize the strength and fracture toughness of the composites. From results, we found that the thermo-viscoelasticity of the composite was dependent on nano and micro-particles packing, and its strength and fracture toughness were effectively evaluated by fragility.

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Periodical:

Key Engineering Materials (Volumes 345-346)

Pages:

1507-1510

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.345-346.1507

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Online since:

August 2007

Authors:

Soon Chul Kwon, Tadaharu Adachi, Wakako Araki, Akihiko Yamaji

Keywords:

Bending, Dynamic Mechanical Analysis, Fracture Toughness, Fragility, Maximum Particle Packing, Polymer Matrix Composite (PMC)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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