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Dynamic mechanical properties of PTFE-based composites filled with multi-component

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【Author】 WANG Li-qin1,LI Wen-zhong1,2,GU Le1,ZHENG De-zhi1 (1. School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China2. College of Mechanical and Electronic Engineering, Hebei University of Science and Technology,Shijiazhuang 050054,China)

【机构】 School of Mechatronics Engineering Harbin Institute of Technology； School of Mechatronics Engineering； Harbin Institute of Technology； Harbin 150001； China； China College of Mechanical and Electronic Engineering Hebei University of Science and Technology； Shijiazhuang 050054；

【摘要】 To improve performance of PTFE-based damping material,composites with several fillers were prepared by compressing and sintering. The dynamic mechanical properties of the composites were investigated by means of viscoanalyser. Temperature-dependent loss factors,storage modulus and loss modulus were obtained. And SEM was employed to study the compatibility between PTFE and fillers. The results show that,when blending PPS and PEEK at proper content,the loss factor curve appears double peaks,which can widen the high-damping temperature region of the composites. Blending graphite or alumina can increase the storage modulus obviously,but decrease the value of loss factor. And because graphite or alumina combines with matrix poorly,glide would happen at interface when bearing external load. The interface friction can dissipate vibration energy,which increases the loss modulus of the composites. Blending PPS,PEEK and graphite or alumina at right content,PTFE-based composites can meet demands as damping material in practical engineering.更多还原

【Abstract】 To improve performance of PTFE-based damping material,composites with several fillers were prepared by compressing and sintering. The dynamic mechanical properties of the composites were investigated by means of viscoanalyser. Temperature-dependent loss factors,storage modulus and loss modulus were obtained. And SEM was employed to study the compatibility between PTFE and fillers. The results show that,when blending PPS and PEEK at proper content,the loss factor curve appears double peaks,which can widen the high-damping temperature region of the composites. Blending graphite or alumina can increase the storage modulus obviously,but decrease the value of loss factor. And because graphite or alumina combines with matrix poorly,glide would happen at interface when bearing external load. The interface friction can dissipate vibration energy,which increases the loss modulus of the composites. Blending PPS,PEEK and graphite or alumina at right content,PTFE-based composites can meet demands as damping material in practical engineering.更多还原

【关键词】 PTFE-based composite； dynamic mechanical property； PPS； PEEK；
【Key words】 PTFE-based composite； dynamic mechanical property； PPS； PEEK；

【基金】 the National Natural Science Foundation of China (Grant No. 50575054);the Science and Technology Tackle Key Problem Plan Foun-dation of Harbin, China (Grant No. 2004AA2CG126).

【文献出处】 Journal of Harbin Institute of Technology ,哈尔滨工业大学学报(英文版) , 编辑部邮箱 ,2007年06期

【分类号】TQ327
【被引频次】3
【下载频次】75

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