摘要
以纳米碳化硅(SiC)、微米SiC及粉状SiC纤维填充聚四氟乙烯(PTFE)复合材料,对PTFE复合材料进行力学和摩擦学性能测试,分析对比不同粒径填料及其质量分数对PTFE复合材料力学和摩擦磨损性能的影响,用扫描电子显微镜(SEM)对拉伸断口形貌进行观察,探讨了复合材料增强机理。对比研究结果表明:不同粒径的SiC均能提高复合材料的硬度和耐磨性,SiC纤维/PTFE复合材料有较高的拉伸强度和断裂伸长率,其综合性能最好。拉伸断口的微观分析表明:SiC纤维与PTFE界面粘结性能较好,对PTFE复合材料性能有一定的增强效果。
The mechanical and tribological properties of PTFE composites filled with micron,nano-SiC and SiC fiber were tested. The effects of different size and content on the mechanical and tribological properties of PTFE composites were investigated. The tensile break surfaces were observed by a scanning electron microscope（SEM）. The strengthen mechanism of the composites was investigated. The comparative study of PTFE composites filled with different sizes of SiC showed that the wear-resisting properties and hardness for composites were improved when different sizes of SiC were filled in. SiC fiber/PTFE composites had higher tensile strength and break elongation. Its integrated properties were the best. The micro-analysis of tensile fracture surface showed that it had a better bonding between SiC fiber and the PTFE matrix. Performance of PTFE composites was enhanced.
出处
《塑料》
CAS
CSCD
北大核心
2009年第5期17-20,共4页
Plastics
基金
高等学校博士学科点专项科研基金项目(20060307002)
