3 years ago

An investigation on the graphitic carbon nitride reinforced polyimide composite and evaluation of its tribological properties

An investigation on the graphitic carbon nitride reinforced polyimide composite and evaluation of its tribological properties
Songjun Li, Haojie Song, Zhaoxin Shi, Liangjun You, Lin Zhu
This article presented a novel application for the graphitic carbon nitride (g-C3N4), which was used as nanofillers to improve the tribological properties of polyimide (PI). The composite based on PI and g-C3N4 was prepared by mechanical mixing process and hot compression molding process. The characterizations of g-C3N4 and PI/g-C3N4 composites were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. Friction and wear tests were carried out using UMT-2 reciprocating tribo-tester against stainless steel ball under dry friction. The results showed that the amount of g-C3N4 was decisive to the tribological properties of PI/g-C3N4 composites. The optimal tribological properties occurred when the amount of g-C3N4 was 10 wt %, which showed the smallest friction coefficient and the lowest wear rate. Furthermore, this work provided an example of application for the g-C3N4 as the excellent nanofiller in polymer matrix composites. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45403.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45403

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