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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．
Three surface modifiers, silane coupling agent SG-Si900 (SG), SG-Si900 containing rare earth solution (SGS / RES) and rare earth solution (RES) for glass fiber surface treatment. The tensile properties of glass fiber reinforced polytetrafluoroethylene (GF / PTFE) composites under different surface treatment conditions were studied. The fracture morphology was analyzed by SEM. The experimental results show that the interfacial adhesion of GF / PTPE composites with RES treatment is better than that of SGS / RES and SGS due to the effect of rare earth elements. When the content of rare earth elements is 0.2-0.4 wt%, the tensile properties of GF / PTFE composites are greatly enhanced, and the best properties are obtained when the content of rare earth elements is 0.3 wt%.