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 ...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.展开更多
The effects of physical aging on the tensile property of notched samples and the endothermic peak at glass transition region of polyphenylquinoxaline films were studied.
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
文摘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.
文摘The effects of physical aging on the tensile property of notched samples and the endothermic peak at glass transition region of polyphenylquinoxaline films were studied.
