STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE

SHEN Jingshu; Xu Duanfu; YAO Ruigang; LIU Ruixia; LI Dawei

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STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE

Papers | Updated：2021-06-21

- STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE
- STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE
- 高分子科学（英文版） 1990年8卷第1期页码：69-74
- Affiliations：
  
  1. AO) Ruigang L_
  2. Academia Sinica
  3. Beijing
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：1990-03-20
- Accepted：
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[1]沈静姝,徐端夫,姚瑞刚,刘瑞霞,李大为.STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE[J].Chinese Journal of Polymer Science,1990,{4}(01):69-74.

SHEN Jingshu, Xu Duanfu, YAO Ruigang, et al. STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE[J]. 1990, 8(1): 69-74.
[1]沈静姝,徐端夫,姚瑞刚,刘瑞霞,李大为.STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE[J].Chinese Journal of Polymer Science,1990,{4}(01):69-74. DOI：

SHEN Jingshu, Xu Duanfu, YAO Ruigang, et al. STUDY OF ACOUSTIC EMISSION DURING NON-ISOTHERMAL CRYSTALLIZATION OF POLYPROPYLENE[J]. 1990, 8(1): 69-74. DOI：

摘要

<正> 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.

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

crazing and cavitation between spherulites and inside spherulites.

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