中国电机工程学报2024，Vol.44Issue(9)：3378-3387,中插3,11.DOI:10.13334/j.0258-8013.pcsee.230364
双向拉伸聚丙烯薄膜shish-kebab结构的辐照劣化模型研究
Irradiation Degradation Model of Shish-kebab Structure of Biaxially Oriented Polypropylene Film
李化 1王雨橙 1王哲豪 1王柯 2林福昌1
作者信息
- 1. 强电磁工程与新技术国家重点实验室(华中科技大学电气与电子工程学院),湖北省 武汉市 430074
- 2. 高分子材料工程国家重点实验室(四川大学高分子科学与工程学院),四川省 成都市 610065
- 折叠
摘要
Abstract
High-energy radiation can lead to chemical changes such as cross-linking and degradation of energy storage dielectric of capacitors,which will affect the electrical performance and application of the capacitor.Taking the typical shish-kebab structure of biaxially oriented polypropylene(BOPP)film as the object,the effects of accumulated γ irradiation dose D on the molecular chain structure and crystallization characteristics are studied,and the irradiation degradation model is established.The results show that when D<10 kGy,irradiation crosslinking and degradation reactions occur simultaneously to the same extent,and the crystallinity and the content of molecules with high molecular weight do not change significantly.When D≥10 kGy,the irradiation degradation reaction is dominant,the shish structure is gradually destroyed,and the crystallinity and the content of molecules with high molecular weight decrease gradually.When D=1 000 kGy,the shish-kebab structure is almost completely destroyed,and there is mainly lamellar and amorphous region in the film.The model describes the degradation process of shish-kebab structure when applying γ irradiation,providing a reference for the irradiation aging mechanism of polymer crystal structure.关键词
γ辐照/双向拉伸聚丙烯薄膜/shish-kebab结构/结晶特性/劣化模型Key words
γ irradiation/biaxially oriented polypropylene(BOPP)film/shish-kebab structure/crystallinity/degradation model分类
信息技术与安全科学引用本文复制引用
李化,王雨橙,王哲豪,王柯,林福昌..双向拉伸聚丙烯薄膜shish-kebab结构的辐照劣化模型研究[J].中国电机工程学报,2024,44(9):3378-3387,中插3,11.
