Journal
COMPOSITES PART B-ENGINEERING
Volume 56, Issue -, Pages 575-581Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.08.025
Keywords
Carbon fibers; Polymer-matrix composites; Surface properties; Surface treatments; Supercritical fluids
Funding
- National Natural Science Foundation of China [21174034]
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To improve the interfacial properties between carbon fibers and epoxy matrix, the fibers were treated by an ammoniac medium, which consisted of supercritical water, ethanol and triethylene tetramine. The images of atomic force microscopy and scanning electron microscope indicate that coating layers are formed on the surfaces of treated fibers. The results of X-ray photoelectron spectroscopy demonstrate that N content on the surfaces of carbon fibers increases and the main ammoniac groups of the coating layers are amino and imino groups. The mechanical measurements indicate that both interlaminar and interface shear strength of carbon fibers are significantly increased after amination. (C) 2013 Published by Elsevier Ltd.
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