Combined effects of fiber/matrix interface and water absorption on the tribological behaviors of water-lubricated polytetrafluoroethylene-based composites reinforced with carbon and basalt fibers

被引：67
作者：
Wang, Jianzhang [1 ]
Chen, Beibei [1 ,2 ]
Liu, Ning [1 ,2 ]
Han, Gaofeng [1 ,2 ]
Yan, Fengyuan [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2014年 / 59卷
关键词：
Fibers; Polymer-matrix composites (PMCs); Interface; Wear; WEAR BEHAVIOR; MECHANICAL-PROPERTIES; SURFACE MODIFICATION; POLYMERIC MATERIALS; PTFE COMPOSITES; SEA-WATER; FRICTION; ENHANCEMENT; SEAWATER; PLASTICS;
D O I：
10.1016/j.compositesa.2014.01.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tribological behaviors of two PTFE-based composites reinforced with carbon fibers and basalt fibers sliding against stainless steel under water lubrication were investigated and compared with those of pure PTFE. Results showed that carbon fibers were well bonded with PTFE matrix by dendritic PTFE nano-ribbons in a Boston ivy-like manner, but the basalt fibers were poorly bonded with the matrix. Due to the great accelerating effect of poor fiber/matrix interfacial adhesion on water absorption, BF/PTFE with the highest crystallinity unexpectedly showed the highest water absorption, resulting in serious matrix plasticization and degradation of fiber/matrix interfacial adhesion. As a result, as the reinforcement failure of basalt fibers occurred, BF/PTFE exhibited the highest wear rate. Instead, because good fiber/matrix interfacial adhesion was favor of the resistance to water intrusion, CF/PTFE composite was not dominated by remarkable matrix plasticization and fiber/matrix interface degradation, and showed the lowest wear rate. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：85 / 92
页数：8
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