不同拉伸方式引起BOPP薄膜的结构特征与绝缘介电性能

›› 2024, Vol. 38 ›› Issue (3): 54-58.

不同拉伸方式引起BOPP薄膜的结构特征与绝缘介电性能

汪鹏¹,姚成²,刘刚²,蔡希鹏²,贾磊²,王铠¹,陈龙¹

1. 深圳供电局有限公司
2. 南方电网科学研究院有限责任公司

收稿日期:2023-08-17 修回日期:2023-09-05 出版日期:2024-03-26 发布日期:2024-03-26

Structural characteristics and electrical insulating properties of BOPP films based on different stretching modes

Received:2023-08-17 Revised:2023-09-05 Online:2024-03-26 Published:2024-03-26

摘要/Abstract

摘要： 采用不同拉伸方式以及改变双向拉伸聚丙烯（BOPP）薄膜厚度，调节伸直链晶含量（厚晶片）、纤维化形貌和取向形态，并考察这些结构因素对介电性能的作用规律。结果表明，热稳定的伸直链晶和纤维网络的结构各向同性有利于提高击穿场强、降低介电损耗；对电介质薄膜加工-结构-性能关系的深入理解能够为设计、开发高品质电容膜产品提供参考。

关键词: 双向拉伸聚丙烯, 伸直链晶, 纤维化形貌, 击穿场强

Abstract: In this work， simultaneous biaxial drawing and sequential biaxial drawing were chosen as two stretching modes to adjust the thickness， extended chain crystal content， fibrillar morphology， and orientation texture of BOPP films， and the working rules of these structural issues on their electrical insulating properties were investigated. The results indicated that a thick lamellar structure with a good thermal stability and an isotropous fibrillated network facilitated an improvement in the breakdown strength and a reduction in the dielectric loss. These results are advantageous to a good understanding on the processing-structure-property relation of polymer film dielectric.

Key words: biaxially stretched polypropylene, extended chain crystal, fibrillated network, breakdown strength

汪鹏姚成刘刚蔡希鹏贾磊王铠陈龙. 不同拉伸方式引起BOPP薄膜的结构特征与绝缘介电性能[J]. , 2024, 38(3): 54-58.

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