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R. Oliwa, M. Heneczkowski, J. Oliwa, M. Oleksy

Mechanical strength of epoxy/organoclay/carbon fiber hybrid composites (in English)

Polimery 2017, No 9, 658


DOI: dx.doi.org/10.14314/polimery.2017.658

Summary

The influence of organoclay (bentonite BS) modified with quaternary ammonium (QAS) and phosphonium salts (QPS) on the mechanical properties of epoxy/organoclay/carbon fiber hybrid composites was investigated. The longitudinal flexural strength of the composites containing 1 wt % ­BSQAS and BSQPS increased by 4 and 10 %, respectively, compared to the reference sample (epoxy resin/carbon fiber). Moreover, there was also a significant improvement, up to 13 %, of Young's modulus and transverse elastic modulus for the composites with modified bentonites. On the basis of the atomic force microscopy cross-section analysis (AFM), it was found that the composites with matrix containing the modified bentonites were characterized with larger interfacial surface, about 50 %, than that of unmodified matrix (epoxy resin/carbon fiber).
Keywords: epoxy/carbon fiber nanocomposites, bentonite, mechanical properties, electron microscopy
e-mail: oliwa@prz.edu.pl
R. Oliwa, M. Heneczkowski, J. Oliwa, M. Oleksy (803.9 KB)
Mechanical strength of epoxy/organoclay/carbon fiber hybrid composites (in English)