Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite F...

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Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite Filled with Nano-titania
YANG Yulin[1] HUANG Shijun[1] ZU Dalei[1] ZHANG Ruijun[2] QI Xiaowen[1][1]Key Laboratory of Fundamental Science of Mechanical Structure and Material Seience under Extreme Condition for National Defence, Yanshan University, Qinhuangdao 066004, China [2]State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China

摘　要:
关键词:聚四氟乙烯复合材料 酚醛复合材料 纳米二氧化钛 复合织物 滑动磨损 芳纶 摩擦磨损性能 聚合物基复合材料
分类号:　TQ323.1 TB332[机标]文献标识码：文章编号：栏目信息：
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Sliding Wear of the Hybrid Kevlar/PTFE Fabric Reinforced Phenolic Composite Filled with Nano-titaniaYANG Yulin 1,HUANG Shijun 1,,ZU Dalei 1,ZHANG Ruijun 2,and QI Xiaowen 1 1 Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defence,Yanshan University,Qinhuangdao 066004,China 2 State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,ChinaYANG Yulin 1,HUANG Shijun 1,,ZU Dalei 1,ZHANG Ruijun 2,and QI Xiaowen 1 1 Key Laboratory of Fundamental Science of Mechanical Structure and Material Science under Extreme Condition for National Defence,Yanshan University,Qinhuangdao 066004,China 2 State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,ChinaAbstract:The Kevlar/polytetrafluroethylene（Kevlar/PTFE） fabric composite can be used as a self-lubricating liner of the self-lubricating bearing.Many types of nano-particles can improve the tribological performance of the polymer-based composite.Unfortunately,up to now,published work on the effect of nano-particles on the tribological performance of the fabric composite which can be used as a self-lubricating liner is quite scarce.Therefore,for the purpose of exploring a way to significantly improve the tribological performance of the fabric composite,the tribological performance of the Kevlar/PTFE fabric composite filled with nano-titania is evaluated by using the block-on-ring wear tester.The scanning electron microscopy is utilized to observe the morphologies of worn surfaces of the fabric composites and the counterparts.The tensile properties of the composites are evaluated on the universal material testing machine.The test results show that the addition of nano-titania at a proper mass fraction of the matrix resin improves the wear resistance and the tensile strength,decreases the friction coefficient,and makes the wear volume of the composite reach a relative steady state more quickly;plastic deformation and microcutting are important for the wear of the fabric composite;a lubricating layer is formed on the worn surface of the composite during sliding,and the lubricating layer is critical for the tribological performance of the composite;the formation and properties of the lubricating layer are influenced by the nano-titania particles.The proposed study on the effect of nano-titania on the tribological performance of the Kevlar/PTFE fabric composite,especially on the evolution of the worn surface of the composite,provides the basis for further understanding of the influence mechanism of the nano-particles on the tribological performance of the composite and explores a method of improving the tribological performance of the composite.[著者文摘]

Key words:hybrid Kevlar/PTFE fabric composite; self-lubricating liner; nano-titania; friction and wear; lubricating layer