Dispersion and Impact Strength of Epoxy Resin/Nano-Al₂O₃ Composites

Abstract:

This paper focuses on the influence of nano-Al2O3 surface state and composite process on the dispersion of nano-Al2O3 filler. Toughening was performed to epoxy resin by nano-Al2O3, and the effect of impact property of epoxy resin/nano-Al2O3 composites was studied. The results showed that coupling agent treatment and high-speed shear dispersion can improve many properties of the composites. With nano-Al2O3 content increasing, the impact strength of the composites increased at first and then decreased. The maximum appears when the nano-Al2O3 content reached 3wt. %, no matter with or without the coupling agent treatment, which is 87.4% and 78.6% higher than that of monolithic epoxy resin respectively. The coupling agent treatment of nano-Al2O3 helped to improve the impact strength of the composites.

• Periodical: Materials Science Forum (Volume 761)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.761.161
• Online since: July 2013
• Authors: Nai Kui Gao, Zhou Xu, Chun Wu, Rui Hua Li, Hai Yun Jin
• Keywords: Dispersion, Epoxy Resin (ER), Impact Strength, Nano-Al₂O₃

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