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Surface functionalized carbon nanofibers and their effect on the dispersion and tribological property of epoxy nanocomposites

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Abstract

Surface functionalization of carbon nanofibers (CNFs) was carried out, i e, CNFs were firstly oxidized and then the surface was silanized by 3-Aminopropyltriethoxysilane (APTES) via an assembly method. A new kind of high wear resistance s-CNFs/epoxy composite was fabricated by in-situ reaction. FTIR spectroscopy was used to detect the changes of the functional groups produced by silane on the surface of CNFs. The tribological properties and microstructures of modified and unmodified CNFs/epoxy composites were studied, respectively. The expremental results indicate that APTES is covalently linked to the surface of CNFs successfully and improves the dispersion of CNF in epoxy matrix. The friction coefficients and the wear rates of s-CNFs/epoxy composites are evidently lower than those of u-CNFs/epoxy composites under the same loads. Investigations also indicate that abrasive wear is the main wear mechanism for u-CNFs/epoxy composite, with slight adhesive wear for s-CNFs/epoxy composite under the same sliding wear condition.

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Correspondence to Huaiyuan Wang  (汪怀远).

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Funded by the National Young Top Talents Plan of China (2013042), the National Science Foundation of China (21676052, 21606042), the Science Foundation for Distinguished Young Scholars of Heilongjiang Province (JC201403), and the Natural Science Foundation of Heilongjiang Province (E2015034)

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Zhu, Y., Wang, H., Li, H. et al. Surface functionalized carbon nanofibers and their effect on the dispersion and tribological property of epoxy nanocomposites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1219–1225 (2016). https://doi.org/10.1007/s11595-016-1515-4

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  • DOI: https://doi.org/10.1007/s11595-016-1515-4

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