摘要
采用空气氧化、空气氧化后稀土改性和稀土改性对碳纤维表面进行处理,并研究了3种表面处理对碳纤维增强聚四氟乙烯(CF/PTFE)复合材料拉伸性能的影响.探讨了稀土含量对于复合材料拉伸性能的影响,并运用扫描电子显微镜(SEM)对复合材料拉伸试件的断口进行分析.结果表明:稀土处理能够有效地提高碳纤维与聚四氟乙烯基体的界面结合力,从而提高CF/PTFE复合材料的拉伸性能.当稀土元素在表面改性剂中的质量分数为0.3%时,CF/PTFE复合材料的拉伸性能最佳.
The surfaces of carbon fibers （CF） were treated with air-oxidation, rare earths （RE） after airoxidation, and rare earths, respectively. The effects of these methods on the tensile properties of carbon fiber reinforced polytetrafluoroethylene （CF/PTFE） composites were investigated. The effects of rare earth modifier concentration on tensile properties of CF/PTFE composites were discussed, and the tracture surfaces of tensile specimens were analyzed by employing SEM. The results show that rare earth modifier is efficient in promoting interfacial adhesion between carbon fiber and PTFE matrix, therefore the tensile properties of composites can be promoted obviously. The best tensile properties of the CF/PTFE composites is obtained when the content of rare earth elements is 0.3%.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2006年第6期914-917,共4页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(50275093)
关键词
稀土
碳纤维
聚四氟乙烯复合材料
表面处理
拉伸性能
rare earth
carbon fiber
polytetrafluoroethylene （PTFE） composites
surface treatment
tensile properties
