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Effects of coating solution concentration on the interlaminar shear strength of carbon fiber/epoxy/nano-CaCO3 composites

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Published/Copyright: November 5, 2013

Abstract

Previously, we have shown that the effects of the coating solution concentration of coupling agent on the interlaminar shear strength of fiber/epoxy composites were best investigated with 4 wt.% nano-CaCO3 content. Here, five different types of composites were prepared: (E–0–4): composites modified by untreated nano-CaCO3, (E–1.1–4): composites modified by nano-CaCO3 with 1.1 wt.% coating solution concentration treatment. Similarly, samples E–2.3–4, E–3.5–4 and E–4.6–4 were also fabricated. The results show that nanocomposites prepared with 2.3 wt.% and 3.5 wt.% coating solution concentration treatment have the best shear properties, including interlaminar shear strength, elongation at break and fracture work. With 2.3 wt.% coating solution concentration treatment, these have values of 142.4 MPa, 1.95 mm and 1.86 J, which can increase 11%, 41% and 39% compared to the composite prepared with untreated nano-CaCO3, respectively.


* Correspondence address, Dr. Hong-wei He, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China, Tel.: +863516111121, Fax: +863516111121, E-mail:

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Received: 2013-04-16
Accepted: 2013-07-09
Published Online: 2013-11-05
Published in Print: 2013-11-14

© 2013, Carl Hanser Verlag, München

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