Synergistic effects of polytetrafluoroethylene fibers and graphite microplates on the tribological performance of polyetherketone composites for seawater lubrication
Tingqiang Yang , Hao Liu , Liang Liu , Yunfeng Yan , Junshuai Li , Jianzhang Wang
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引用次数: 0
Abstract
Polyetherketone (PEK) is a high-performance polymer, but its composites for lubrication applications have not been well explored because of limited enhancement by one-component modification. In this study, ternary PEK composites reinforced with 5 % polytetrafluoroethylene (PTFE) fibers and different amounts of graphite (Gr) were developed. The results showed that uniform dispersion was achieved via solution blending, both PTFE and Gr exhibited good compatibility with PEK. The hardness, modulus, thermal properties of PEK composites were enhanced, together with optimal seawater wettability and absorption. Compared with PEK matrix, the friction coefficient and wear rate were reduced by 55 % and 3 orders of magnitude, respectively, at 20 % Gr loading owing to the synergetic effect between PTFE with a unique fiber topology and Gr microplates.
期刊介绍：
Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International.
Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.
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