| 粉状纤维增强PTFE复合材料的力学与摩擦磨损性能 |
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| 引用本文： | 顾红艳,何春霞.粉状纤维增强PTFE复合材料的力学与摩擦磨损性能[J].工程塑料应用,2009,37(6). |
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| 作者姓名： | 顾红艳 何春霞 |
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| 作者单位： | 南京农业大学工学院,南京,210031 |
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| 基金项目： | 高等学校博士学科点专项科研基金 |
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| 摘 要： | 以粉状SiC纤维、Al2O3纤维、高强碳纤维(CF)、中强CF、低强CF增强聚四氟乙烯(PTFE),研究了纤维种类、含量对PTFE力学和摩擦磨损性能的影响,用扫描电子显微镜(SEM)对试样拉伸断口形貌进行观察,探讨了复合材料的增强机理.结果表明,粉状SiC纤维、Al2O3纤维及CF均能提高PTFE的硬度和耐磨性;高强CF、中强CF及Al2O3纤维能提高其拉伸强度;5种纤维均使PTFE冲击强度下降,但咖/高强CF复合材料的冲击强度降幅较小;SEM分析表明,SiC纤维与PTFE的界面结合强度较低,界面出现了许多空隙,中强CF、高强CF、Al2O3纤维与PT-FE界面结合较好,拉伸断口处多数纤维与基体牢固粘附而难以拔出,PTFE/低强CF复合材料呈典型的脆性断裂特征.
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| 关 键 词： | 粉状纤维 复合材料 力学性能 摩擦磨损性能 |
MECHANICAL AND FRICTIONAL PROPERTIES OF PTFE COMPOSITES FILLED WITH POWDERED FIBERS |
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| Gu Hongyan,He Chunxia.MECHANICAL AND FRICTIONAL PROPERTIES OF PTFE COMPOSITES FILLED WITH POWDERED FIBERS[J].Engineering Plastics Application,2009,37(6). |
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| Authors: | Gu Hongyan He Chunxia |
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| Affiliation: | Engineering College of Nanjing Agricultural University;Nanjing 210031;China |
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| Abstract: | The Polytetrafluoroethylene(PTFE)was filled with powdered SiC fiber,Al2O3 fiber,high-strength carbon fiber(CF),medium-strength CF and low-strength CF.The effects of types and content of fillers on the mechanical,friction and wear properties of PTFE were investigated.The tensile fracture surfaces were observed by a scanning electron microscope(SEM).The strengthen mechanism of composites was investigated.The results indicated that the hardness and wear resistance of PTFE were raised when powdered SiC fiber,Al... |
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| Keywords: | PTFE |
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