找回密码
 注册
查看: 1437|回复: 0

表面处理纳米Si3N4/PTFE复合材料的力学与摩擦学性能

[复制链接]

该用户从未签到

发表于 2012-7-4 21:21:50 | 显示全部楼层 |阅读模式
表面处理纳米Si3N4/PTFE复合材料的力学与摩擦学性能
顾红艳 何春霞南京农业大学工学院,江苏南京210031

摘 要:用热压成型法制备了纳米Si3N4填充的聚四氟乙烯(PTFE)复合材料,研究了纳米Si3N4质量分数、表面处理对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,分析了复合材料增强机制。结果表明:未处理纳米Si3N4能提高复合材料的硬度和耐磨性,但拉伸强度和冲击强度有所降低;表面处理纳米Si3N4后,PTFE复合材料的拉伸强度、冲击强度、减摩性能有所提高。拉伸断口的微观分析表明,表面处理Si3N4在PTFE基体中有较好的分散性,与PTFE基体界面结合较好。[著者文摘]

关键词:纳米Si3N4 聚四氟乙烯 表面处理 力学性能 摩擦磨损性能
分类号: TB332[著者标引]文献标识码:A文章编号:0254-0150(2009)11-040-4栏目信息:试验研究
相关文献:主题相关 全文快照   

Mechanical and Tribological Properties of PTFE Composites Filled with Nano-SiaN4 by Surface TreatmentGu Hongyan He Chunxia Engineering College, Nanjing Agricultural University, Nanjing Jiangsu 210031, ChinaAbstract:The composites of polytetrafluoroethylene (PTFE) filled with nano-Si3N4 were prepared by heating compres- sion molding. The effects of content and surface treatment of nano-Si3N4 on the mechanical, friction and wear properties of PTFE composites were investigated. The tensile fractures were observed by a scanning electron microscope (SEM). The strengthen mechanism for the composites was investigated. The results show that the untreated nano-Si3N4 can raise the hardness and wear resistance of composites, but it reduces tensile strength and impact strength of the composites. Nano- Si3N4 by surface treatment increases the tensile strength, impact strength and friction properties of composites. The micro- analysis of tensile fracture shows that nano-Si3N4 by surface treatment has a better dispersion in the PTFE matrix, and has a better combination with the PTFE matrix.[著者文摘]

Key words:nano-Si3N4 ; PTFE ; surface treatment ; mechanical property ; friction and wear property

表面处理纳米Si3N4/PTFE复合材料的力学与摩擦学性能.pdf

314.55 KB, 下载次数: 0

售价: 1 氟币  [记录]  [购买]

表面处理纳米Si3N4/PTFE复合材料的力学与摩擦学性能

您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|免责声明|手机版|Archiver|氟塑料论坛 ( 苏ICP备14011106号-3 )

GMT+8, 2024-11-26 01:56 , Processed in 0.115628 second(s), 27 queries .

Powered by Discuz! X3.5

© 2001-2024 Discuz! Team.

快速回复 返回顶部 返回列表