| STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE |
| |
| 作者姓名： | 沈静姝 徐端夫 姚瑞刚 刘瑞霞 李大为 |
| |
| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing |
| |
| 基金项目： | This work was supported by Academia Sinica selected Research Program and National Natural Science Foundation of China |
| |
| 摘 要： | In this paper we have presented the results of acoustic emission (AE) during non-isothemal crystallization of polypropylene (PP) melt with mean cooling rate 4℃/min, and discussed the effects of molecular weight (MW) on AE activity. It is shown that the amount of AE ring-down counts during whole crystallization of PP depends on the MW strongly.The copious AE bursts have been observed at the late stage of PPcrystallization. AE bursts are caused by cracking, crazing and cavitation between spherulites and inside spherulites.
|
| 收稿时间： | 1989-05-01 |
STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE |
| |
| SHEN Jingshu,Xu Duanfu,YAO Ruigang,LIU Ruixia,LI Dawei.STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE[J].Chinese Journal of Polymer Science,1990,0(1):69-74. |
| |
| Authors: | SHEN Jingshu Xu Duanfu YAO Ruigang LIU Ruixia LI Dawei |
| |
| Institution: | Institute of Chemistry; Academia Sinica; Beijing |
| |
| Abstract: | In this paper we have presented the results of acoustic emission (AE) during non-isothemal crystallization of polypropylene (PP) melt with mean cooling rate 4℃/min, and discussed the effects of molecular weight (MW) on AE activity. It is shown that the amount of AE ring-down counts during whole crystallization of PP depends on the MW strongly.The copious AE bursts have been observed at the late stage of PPcrystallization. AE bursts are caused by cracking, crazing and cavitation between spherulites and inside spherulites. |
| |
| Keywords: | Acoustic emission Non-isothermal crystallization Polypropylene |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
| 点击此处可从《高分子科学》下载免费的PDF全文 |
