摘要
对纳米AlN、Si3N4、TiN填充的聚四氟乙烯(PTFE)复合材料进行了力学性能与摩擦磨损性能测试,研究了纳米粒子种类和含量对PTFE力学性能和摩擦磨损性能的影响,用扫描电子显微镜(SEM)对拉伸断面形貌进行观察,并探讨了相关机理。研究结果表明,纳米AlN、Si3N4、TiN的填充均能提高PTFE的硬度和耐磨性;PTFE纳米复合材料的拉伸强度和断裂伸长率均有所下降,PTFE/TiN复合材料的降幅最小;3种纳米填料均使PTFE的冲击强度下降,PTFE/TiN和PTFE/Si3N4复合材料冲击强度的降幅较小;SEM分析表明,纳米TiN在PTFE基体中有较好的分散性,与PTFE基体界面结合较好,纳米AlN、Si3N4在PTFE基体中的分散性较差。
The mechanical, friction and wear properties of polytetrafluoroethylene （PTFE） composites filled with nanometer AlN, Si3N4, and TiN were studied. It was found that the nanoparticle increased the hardness and wear resistance of PTFE but decreased the tensile and impact strengths of the composites. The tensile fracture surface was observed using scanning electron microscope （SEM）, which showed that nano-TiN was finely dispersed in the PTFE matrix, however, nano-AlN and Si3N4 could not be well dispersed.
出处
《中国塑料》
CAS
CSCD
北大核心
2009年第9期44-48,共5页
China Plastics
基金
高等学校博士学科点专项科研基金项目(20060307002)
关键词
纳米氮化物
聚四氟乙烯
复合材料
力学性能
摩擦
磨损
nano-nitride
polytetrafluoroethylene
composite
mechanical property
friction
wear
