Tribological Behavior of PEEK/PTFE Composites Reinforced with Carbon Fibers and Graphite

被引：12
作者：
Li, Yingji [1 ]
Chen, Yi [1 ,2 ]
Guo, Yongxin [3 ]
Bian, Da [4 ]
Zhao, Yongwu [4 ]
机构：
[1] Wuxi Inst Technol, Sch Mech Technol, Wuxi 214121, Jiangsu, Peoples R China
[2] Suzhou Nilfisk R&D Co Ltd, Suzhou 215000, Peoples R China
[3] Wuxi Univ, Coll Automat, Wuxi 214105, Jiangsu, Peoples R China
[4] Hangnan Univ, Coll Mech Engn, Wuxi 214122, Jiangsu, Peoples R China
来源：
MATERIALS | 2022年 / 15卷 / 20期
关键词：
PEEK; PTFE composites; carbon fibers; friction coefficient; wear; MECHANICAL-PROPERTIES; HYBRID COMPOSITES; PTFE CONTENT; PERFORMANCE; PEEK;
D O I：
10.3390/ma15207078
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, poly (ether ether ketone) (PEEK)/polytetrafluoroethylene (PTFE) composites reinforced with carbon fibers (CFs) and graphite (Gr) were fabricated by compressive molding technology. The friction and wear properties of the PEEK/PTFE composites sliding against Si3N4 balls were investigated using ball-on-disk configuration under dry sliding conditions, and the morphologies of the worn surfaces were also observed with a scanning electron microscope (SEM) and a three-dimensional morphometer. The results indicated that the introduction of CFs significantly improved the tribological properties of the composites, but the friction coefficient of the PEEK/PTFE/CFs composites were higher than the pure PEEK/PTFE composites. However, it was found that a combinative addition of CFs and Gr creates an obvious synergetic effect of improving the friction-reducing and anti-wear abilities of the composites. The mechanisms of the improved tribological properties of the PEEK/PTFE/CFs/Gr composites were discussed based on the analysis of the worn surfaces and tribofilms.
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页数：8
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