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Molecules 2019, 24(2), 224; https://doi.org/10.3390/molecules24020224

Mechanical and Tribological Properties of Polytetrafluoroethylene Composites with Carbon Fiber and Layered Silicate Fillers

1
Chemistry Department, Institute of Natural Sciences, North-Eastern Federal University, Yakutsk 677000, Russia
2
V.A. Belyi Metal-Polymer Research Institute of National Academy of Sciences of Belarus, Gomel 246050, Belarus
3
School of Mechanical & Automotive Engineering, Halla University, Wonju 26404, Korea
4
Department of Energy Science and Technology, Myongji University, Yongin 449-728, Korea
*
Authors to whom correspondence should be addressed.
Received: 3 December 2018 / Revised: 27 December 2018 / Accepted: 3 January 2019 / Published: 9 January 2019
(This article belongs to the Section Materials Chemistry)
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Abstract

Mixtures of layered silicates (vermiculite and kaolinite) and carbon fibers were investigated as filler materials for polytetrafluoroethylene. The supramolecular structure and the tribological and mechanical properties of the resulting polymer composite materials were evaluated. The yield strength and compressive strength of the polymer increased by 55% and 60%, respectively, when a mixed filler was used, which was attributed to supramolecular reinforcement of the composites. In addition, the wear resistance increased by 850 times when using vermiculite/kaolinite fillers, which was due to protection of the surface by the formation of hard tribofilms. View Full-Text
Keywords: polytetrafluoroethylene; polymer composite material; carbon fibres; layered silicates; synergetic effect; wear; friction polytetrafluoroethylene; polymer composite material; carbon fibres; layered silicates; synergetic effect; wear; friction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Vasilev, A.P.; Struchkova, T.S.; Nikiforov, L.A.; Okhlopkova, A.A.; Grakovich, P.N.; Shim, E.L.; Cho, J.-H. Mechanical and Tribological Properties of Polytetrafluoroethylene Composites with Carbon Fiber and Layered Silicate Fillers. Molecules 2019, 24, 224.

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