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Study of Surface Characteristics of T700 Carbon Fibers and Interfacial Properties of their Reinforced Epoxy Composites

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Abstract:

The purpose of this paper is to comparatively study the surface characteristics of domestic and Toray T700 carbon fibers (T700-CFs) and the interfacial properties of their reinforced epoxy composites. The surface roughness and surface energy of the fibers were characterized by scanning electron microscope (SEM) and dynamic contact angle analysis (DCAA). The surface chemistry analysis of the fibers was carried out by using X-ray photoelectron spectroscopy (XPS). The interfacial properties of the T700-CF/epoxy composites were studied by testing the interlaminar shear strength (ILSS), observing SEM images of composites profiles and calculating the interfacial adhesion factors from dynamic mechanical thermal analysis (DMTA) data. The results show that domestic T700-CFs have a better interfacial adhesion to epoxy matrix due to its higher surface roughness, chemical activity and surface energy than Toray T700-CFs.

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Periodical:

Applied Mechanics and Materials (Volume 364)

Pages:

706-710

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.364.706

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Online since:

August 2013

Authors:

Ling Cong Li, Li Li Wang, Hua Hao, Hui Ling, Hong Jie Sun, Yun Hua Yu, Xiao Ping Yang

Keywords:

Carbon Fiber (CF), Composite, Interfacial Properties, Surface Characteristics

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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