Journal
APPLIED SURFACE SCIENCE
Volume 345, Issue -, Pages 349-354Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.03.197
Keywords
Polymer-matrix composites; Graphite-like carbon nitride (g-C3N4); Poly(vinylidene difluoride) (PVDF); Friction
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Funding
- Natural Science Foundation of Jiangsu [BK20130511]
- National Natural Science Foundation of China [51372103]
- Jiangsu Key Lab of Material Tribology Foundation [kjsmcx2011005]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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This paper introduced the preparation, structural, and friction characteristics of graphite-like carbon nitride (g-C3N4)/poly(vinylidene difluoride) (PVDF) composites. The g-C3N4/PVDF composites with different g-C3N4 contents were prepared via wet mixing and hot press molding technique. The structure, morphology, thermal properties, and friction characteristics were studied by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and universal micro-tribotester under dry sliding conditions. The XRD and FT-IR studies confirmed the incorporation of g-C3N4 into the PVDF matrix. The SEM results showed good dispersion of g-C3N4 in PVDF matrix. The onset temperature To of the composites increased with increasing the content of g-C3N4 filler, which confirmed the enhancement of thermal stability of the composites. The friction characteristics results indicated that small amount of g-C3N4 filler was not beneficial to reduce friction coefficient of the composite while large amount of filler had little effect on it. In addition, the g-C3N4 filler was beneficial to reduce wear loss of the composite, and the wear loss decreased with increasing the content of g-C3N4 filler. (C) 2015 Elsevier B.V. All rights reserved.
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