稀土元素对玻璃纤维增强PTFE复合材料拉伸性能的影响

无机材料学报

稀土元素对玻璃纤维增强PTFE复合材料拉伸性能的影响

薛玉君; 程先华; 谢超英

上海交通大学机械工程学院上海 200030

收稿日期:2001-05-11 修回日期:2001-07-16 出版日期:2002-05-20 网络出版日期:2002-05-20

Effect of Rare Earth Elements on Tensile Properties of Glass Fiber Reinforced PTFE Composites

XUE Yu-Jun; CHENG Xian-Hua; XIE Chao-Ying

School of Mechanical Engineering; Shanghai Jiao Tong University; Shanghai 200030; China

Received:2001-05-11 Revised:2001-07-16 Published:2002-05-20 Online:2002-05-20

摘要/Abstract

摘要： 三种表面改性剂,即硅烷偶联剂ＳＧ－Ｓｉ９００(ＳＧ)、含ＳＧ－Ｓｉ９００的稀土溶液(ＳＧＳ/ＲＥＳ)和稀土溶液(ＲＥＳ)用于玻璃纤维表面处理．研究了不同表面处理条件下玻璃纤维增强聚四氟乙烯(ＧＦ/ＰＴＦＥ)复合材料的拉伸性能,并应用ＳＥＭ对断口形貌进行了分析．试验结果表明:由于稀土元素的作用,稀土溶液ＲＥＳ比ＳＧＳ/ＲＥＳ和ＳＧＳ能够更好地提高玻璃纤维与ＰＴＦＥ之间的界面结合力;经ＲＥＳ处理的ＧＦ/ＰＴＰＥ复合材料的界面结合力主要受稀土元素含量的影响,当稀土元素含量为０．２~０．４Ｗｔ%时,ＧＦ/ＰＴＦＥ复合材料的拉伸性能大大提高,并且在稀土元素含量为０．３ｗｔ%时其性能最佳．

关键词: 稀土元素, 玻璃纤维, GF/PTFE复合材料, 拉伸性能

Abstract: Three types of surface modifiers, i.e. silane coupling agent SG-Si900 (SGS), a solution of rare earth elements
containing SG-Si900 (SGS/RES), and a solution of rare earth elements (RES) were used for the surface treatment of glass fiber. The tensile properties
of glass fiber reinforced polytetrafluoroethylene (GF/PTFE) composites under the different surface treatment conditions were investigated, and the
fracture surfaces were analyzed by employing SEM. The experimental results show that RES is superior to SGS/RES and SGS in promoting interfacial
adhesion between the glass fiber and PTFE due to the effects of rare earth elements. Meanwhile, the interfacial adhesion of the GF/PTFE composites
treated with RES is mainly affected by the content of rare earth elements. The tensile properties of the GF/PTFE composites can be improved considerably
when the content of rare earth elements is 0.2-0.4wt%, and the optimum performance of the GF/PTFE composites obtained is at 0.3wt% RE content.

Key words: rare earth elements, glass fiber, GF/PTFE composites: tensile properties

中图分类号:

TQ343

薛玉君,程先华,谢超英. 稀土元素对玻璃纤维增强PTFE复合材料拉伸性能的影响[J]. 无机材料学报.

XUE Yu-Jun,CHENG Xian-Hua,XIE Chao-Ying. Effect of Rare Earth Elements on Tensile Properties of Glass Fiber Reinforced PTFE Composites[J]. Journal of Inorganic Materials.

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