SEM OBSERVATION OF THE CRAZING FOR POLYPHENYLQUINOXALINE FILMS DURING IN SITU STRETCHING  

作　　者：沈静姝 

机构地区：[1]Polymer Physics Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Chinese Journal of Polymer Science》1999年第4期309-314,共6页高分子科学（英文版）

基　　金：This work was supported by the National Key Projects for Fundamental Research--"Macromolecular Condensed State",The State Science and Technology Commission of China and by the Science Foundation of PPLAS

摘　　要：The crazing of polyphenylquinoxaline (PPQ-E) films during in situ stretching has been observed by SEM. The crazing phenomena and craze morphology of PPQ-E films were interpreted. The strain values at critical crazing and yielding and the craze stability of PPQ-E samples depend on the thermal-dealing condition for the samples. From the point of view of cohesional entanglements and energy absorbed by samples, the experiment results were explained.The crazing of polyphenylquinoxaline (PPQ-E) films during in situ stretching has been observed by SEM. The crazing phenomena and craze morphology of PPQ-E films were interpreted. The strain values at critical crazing and yielding and the craze stability of PPQ-E samples depend on the thermal-dealing condition for the samples. From the point of view of cohesional entanglements and energy absorbed by samples, the experiment results were explained.

关 键 词：PPQ-E CRAZING physical aging cohesional entanglement in-situ stretching SEM 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]