作　　者： ; ;

机构地区： 中山大学化学与化学工程学院材料科学研究所

出　　处： 《高分子材料科学与工程》 1994年第4期129-131,共3页

摘　　要： 研究了碳纤维增强聚醚醚酮单向复合材料层板的冷热循环疲劳特性。结果表明，复合材料的疲劳特性与其界面结构密切相关，当界面为聚醚醚酮横晶层时，复合材料在冷热循环初期，弹性模量具有增大的趋势，而在循环后期，模量有减小的趋势；当界面是聚醚醚酮球晶时，冷热循环不影响复合材料的弹性模量。通过追踪复合材料在循环过程中的结构变化特性，探讨了材料疲劳特性与界面结构间关系的机制。 Thrmal-cold fatigue of continuous carbon fiber reinforced polyetheretherketone (PEEK) has ben studied in this work. It was found that the fatigue depended on the interfacial structure of the composties. When a transcrystalline layer of PEEK is formed around the fiber, the composite elastic moduli increase with increasing the thermal-cold cycle times at first, then decrease and tend to be constant. But the moduli almost remain unchanged in the case of PEEK spherulites appearing around the fiber in the composites. The distinct interfacial effects on the fatigue are considered to be related to the microstructural difference between PEEK transcrystallinities and spherulites, and its leading thermal conductivity and rigid difference.

关 键 词： 聚醚醚酮 碳纤维 增强 循环疲劳

领　　域： [化学工程]