Interlaminar Fracture of CF/EP Composites Modified with Nano-Silica

Abstract:

Fracture toughness and other mechanical properties of epoxies modified with nano-slica particles were measured to elaborate effects of nano-additives on fracture behaviour of the modified epoxies. Interlaminar fracture behaviours of the nano-silica modified CF/EP composites were subsequently investigated by conducting Mode-I and Mode-II interlaminar fracture toughness tests as well as transverse tension tests. It was found that the fracture toughness of the nano-silica modified epoxies and the interlaminar fracture toughness of nano-silica modified CF/EP composites have been increased significantly (>50%), while the strength and modulus of the materials remain unchanged or slightly higher. In particular, the nano-silica modified epoxies showed only very little reduction in the glass transition temperature (Tg).

• Periodical: Solid State Phenomena (Volumes 121-123)
• Pages: 1403-1406
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.121-123.1403
• Online since: March 2007
• Authors: Shi Qiang Deng, P. Rosso, Lin Ye, Klaus Friedrich
• Keywords: CF/EP Composites, Delamination, Interlaminar Fracture Toughness, Nanosilica

References

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[2] Rosso P, Ye L, Friedrich K, Sprenger S: A Toughened Epoxy Resin by Silica Nanoparticle Reinforcement, Journal of Applied Polymer Science, accepted January (2005).

DOI: 10.1002/app.22805

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