The lubricity and reinforcement of carbon fibers in polyimide at high temperatures

被引：46
作者：
Dong, Fengxia [1 ,2 ]
Hou, Guoliang [1 ]
Cao, Fengxiang [1 ,2 ]
Yan, Fengyuan [1 ]
Liu, Liang [1 ,2 ]
Wang, Jianzhang [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2016年 / 101卷
关键词：
Polyimide; Carbon fibers; High temperature; Lubricity; INTERLAMINAR SHEAR-STRENGTH; TRIBOLOGICAL PERFORMANCE; WEAR PROPERTIES; FABRIC/PHENOLIC LAMINATE; SLIDING WEAR; FRICTION; COMPOSITES; GRAPHITE; WATER; ENHANCEMENT;
D O I：
10.1016/j.triboint.2016.04.035
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The friction and wear behaviors of neat PI and carbon fibers reinforced polyimide (CF/PI) composites were investigated at various temperatures. The results showed that the introduction of carbon fibers could greatly improve the wear resistance in the whole temperature range, while the friction coefficients strongly depended on sliding temperatures. The lubricity of carbon fibers was only found occurring at high temperatures of 180-260 degrees C, which can be attributed to the graphitization of carbon fibers that promotes the generation of friction and transfer films with excellent lubricity on the worn surfaces. This study is expected to provide guidance for the application of carbon fibers both as lubricating and reinforcing additives in polymer matrix sliding at high temperatures. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：291 / 300
页数：10
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