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Title: Dynamic behavior of carbon nanofiber-modified epoxy with the effect of polydopamine-coated interface
Authors: Wang, Pengfei
Yang, Jinglei
Zhang, Xin
Zhang, He
Zhou, Lijiang
Liu, Wanshuang
Zheng, Hang
Zhang, Ming
Shang, Junfang
Xu, Songlin
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Wang, P., Yang, J., Zhang, X., Zhang, H., Zhou, L., Liu, W., Zheng, H., Zhang, M., Shang, J. & Xu, S. (2020). Dynamic behavior of carbon nanofiber-modified epoxy with the effect of polydopamine-coated interface. Mechanics of Advanced Materials and Structures, 27(21), 1827-1839.
Journal: Mechanics of Advanced Materials and Structures
Abstract: Understanding the dynamic mechanical behaviors of nano-modified composites are essential for designing the anti-collision structures. In this work, carbon nanofibers (CNFs) were coated by mussel-inspired polydopamine ad-layer for modifying the interface and dispersion behaviors while incorporated into epoxy. Quasi-static and dynamic compression mechanical responses of CNFs-modified epoxy were systematically investigated. The polydopamine-coated CNFs composites (D-CNFs/epoxy) show the improved strength and strain energy density in comparison with the pristine CNFs/epoxy. The results also indicate that the yield stress and stress-softening properties of polydopamine-coated-CNFs/epoxy are more sensitive to strain rate compared with the neat epoxy and pristine CNFs/epoxy. An empirical constitutive equation in consideration of the strain rate and the strain-softening was proposed to characterize the stress–strain curve. The equivalent epoxy/filler simulation model was built to reveal that a higher interface friction is beneficial in improving the strength of composites, but deteriorating the strength while the interface friction is lower than a certain value.
ISSN: 1537-6494
DOI: 10.1080/15376494.2018.1529843
Rights: © 2018 Taylor & Francis Group, LLC. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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