Study on Microstructure and Impact Strength of Nano-SiO2 Toughened Epoxy Resin Composites

Abstract:

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In this paper, composites with different contents of epoxy resin/nano-SiO2 were fabricated, the influence of compounding process on nano-SiO2 dispersion was studied, the microstructure and the relationship between impact strength and nano-SiO2 content were investigated. The results showed that the distribution of nano-SiO2 particles in the composites could be improved efficiently using high-speed shearing dispersion method. To composites with or without the coupling agent treatment, the impact strength grew with increasing nano-SiO2 content, and increase to a maximum value when nano-SiO2 content was 3wt.%. The maximum value was 75.4%, and 45.5% higher than that of monolithic epoxy resin respectively. With the nano-SiO2 content increased continually, the impact strength of composite materials decreased. The coupling agent treatment of nano-SiO2 administered to improve the impact strength of the composites.

Info:

Periodical:

Edited by:

Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee

Pages:

465-468

DOI:

10.4028/www.scientific.net/MSF.695.465

Citation:

N. K. Gao et al., "Study on Microstructure and Impact Strength of Nano-SiO2 Toughened Epoxy Resin Composites", Materials Science Forum, Vol. 695, pp. 465-468, 2011

Online since:

July 2011

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Price:

$35.00

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