晶须表面改性及其填充聚醚醚酮摩擦学行为  

Tribological behavior of PEEK composites filled with various surface modified whiskers

作　　者：汪怀远[1] 冯新[1] 史以俊[1] 陆小华[1] 

机构地区：[1]南京工业大学化学化工学院,南京210009

出　　处：《北京科技大学学报》2007年第2期182-185,192,共5页Journal of University of Science and Technology Beijing

基　　金：国家高技术研究发展863计划项目(No.2003AA333010);清华大学摩擦学国家重点实验室基金资助项目(SKLT02-2)

摘　　要：利用溶胶-凝胶(sol-gel)、氟表面活性剂(FSO)和钛酸酯偶联剂(NDZ-102)等对钛酸钾晶须(PTW)进行了表面改性,对比了改性后水接触角的变化,考察了干摩擦条件下PTW改性对聚醚醚酮(PEEK)复合材料摩擦磨损性能的影响.利用SEM和光学显微镜观察了磨损面和对偶面转移膜形貌,并分析了其磨损机理.实验结果表明:改性后PTW的水接触角均有不同程度的提高,FSO改性得最高;改性后PEEK复合材料的摩擦因数均降低,在各载荷下FSO和溶胶-凝胶改性PTW后PEEK复合材料耐磨性明显优于未改性的,300N载荷下较未改性的分别提高2.64和2.11倍;但是NDZ-102改性却降低了复合材料的耐磨性.Modification of potassium titanate whiskers （PTW） by sol-gel, FSO and NDZ-102 methods was studied. The water contact angle of modified PTW and the friction and wear properties of PEEK composites filled with various modified PTW were investigated. The worn surfaces and transfer films were observed by SEM and optical microscope, and the abrasion mechanism of PEEK composites filled with modified PTW was discussed. The results show that the water contact angle of PTW is improved after surface modification, and the highest is FSO modification. The friction coefficient of PEEK composites filled with modified PTW decreases, and the wear resistances of PEEK composites filled with FSO and sol-gel modified PTW are better than that without modification, which increases the wear resistance 2.64 and 2.11 times respectively under 300 N. But NDZ-102 decreases the wear resistance of PEEK composites.

关 键 词：聚醚醚酮 钛酸钾晶须 表面改性 摩擦磨损 溶胶-凝胶法 

分 类 号：TH117.3[机械工程—机械设计及理论]