Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 90, Issue -, Pages 433-440Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.08.012
Keywords
Carbon fiber; Mechanical properties; Interface/interphase; Surface treatments
Funding
- China Postdoctoral Science Foundation [2014M551903, 2015T80716]
- National Natural Science Fund Program of China [51403119, 51302154, 51503117]
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An effective carbon fiber/graphene oxide/carbon nanotubes (CF-GO-CNTs) multiscale reinforcement was prepared by co-grafting carbon nanotubes (CNTs) and graphene oxide (GO) onto the carbon fiber surface. The effects of surface modification on the properties of carbon fiber (CF) and the resulting composites was investigated systematically. The GO and CNTs were chemically grafted on the carbon fiber surface as a uniform coating, which could significantly increase the polar functional groups and surface energy of carbon fiber. In addition, the GO and CNTs co-grafted on the carbon fiber surface could improve interlaminar shear strength of the resulting composites by 48.12% and the interfacial shear strength of the resulting composites by 83.39%. The presence of GO and CNTs could significantly enhance both the area and wettability of fiber surface, leading to great increase in the mechanical properties of GO/CNTs/carbon fiber reinforced composites. (C) 2016 Elsevier Ltd. All rights reserved.
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