双向拉伸聚丙烯电容器薄膜双向拉伸过程中工艺参数与晶体结构关系探究

戴熙瀛; 张翀; 万彩霞; 邢照亮; 苏尧天; 孟令蒲

doi:10.14028/j.cnki.1003-3726.2024.23.171

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双向拉伸聚丙烯电容器薄膜双向拉伸过程中工艺参数与晶体结构关系探究

研究论文 | 更新时间：2024-01-11

- 双向拉伸聚丙烯电容器薄膜双向拉伸过程中工艺参数与晶体结构关系探究
- Research on the Relationship of α Crystal Form and Process Parameters During Biaxially Stretching of Biaxially Oriented Polypropylene Capacitor Film
- 高分子通报 2024年37卷第1期页码：80-88
- 作者机构：
  
  1..北京智慧能源研究院，北京　102209
  2..中国科学技术大学国家同步辐射实验室，合肥　230029
  3..中国科学技术大学先进技术研究院，合肥　230094
- 作者简介：
  
  *万彩霞，E-mail: cxwan113@ustc.edu.cn
- 基金信息：
  
  中国科学技术大学先进技术研究院与国网智能电网研究院有限公司横向合作项目(02DL200006)
- DOI：10.14028/j.cnki.1003-3726.2024.23.171
  中图分类号：
- 纸质出版日期：2024-01-20，
  
  收稿日期：2023-05-16，
  
  录用日期：2023-06-14
- 稿件说明：
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戴熙瀛, 张翀, 万彩霞, 邢照亮, 苏尧天, 孟令蒲. 双向拉伸聚丙烯电容器薄膜双向拉伸过程中工艺参数与晶体结构关系探究. 高分子通报, 2024, 37(1), 80–88

Dai, X. Y.; Zhang, C.; Wan, C. X.; Xing, Z. L.; Su, Y. T.; Meng, L. P. Research on the relationship of α crystal form and process parameters during biaxially stretching of biaxially oriented polypropylene capacitor film. Polym. Bull. (in Chinese), 2024, 37(1), 80–88
戴熙瀛, 张翀, 万彩霞, 邢照亮, 苏尧天, 孟令蒲. 双向拉伸聚丙烯电容器薄膜双向拉伸过程中工艺参数与晶体结构关系探究. 高分子通报, 2024, 37(1), 80–88 DOI： 10.14028/j.cnki.1003-3726.2024.23.171.

Dai, X. Y.; Zhang, C.; Wan, C. X.; Xing, Z. L.; Su, Y. T.; Meng, L. P. Research on the relationship of α crystal form and process parameters during biaxially stretching of biaxially oriented polypropylene capacitor film. Polym. Bull. (in Chinese), 2024, 37(1), 80–88 DOI： 10.14028/j.cnki.1003-3726.2024.23.171.

摘要

研究了双向拉伸聚丙烯(BOPP)电容器薄膜在纵向、横向拉伸过程中微观晶体结构演化行为。通过示差扫描量热仪(DSC)、广角X射线衍射(WAXD)和固体核磁(SS-NMR)表征了不同拉伸温度、拉伸比下BOPP薄膜内部晶体结构演化规律，结果表明：较低温度下纵向拉伸，随着纵拉比增大，晶体被破坏生成了更多片晶厚度较薄的

晶；而较高温度下纵向拉伸，会发生熔体拉伸，结构中只生成一种片晶厚度较厚的

晶。同时发现，改变拉伸比并不影响

晶体含量，

晶体含量只与纵拉温度有关，升高纵拉温度有利于

晶体含量提高。而在横向拉伸过程中，升高横向拉伸温度，同样有利于生成

晶，但厚度更薄的晶体含量增多；

晶占比不受横拉比影响，此外增大横拉比有利于提高薄膜结晶度。

Abstract

The micro crystalline evolution behavior of biaxially oriented polypropylene (BOPP) film was studied during longitudinal and transverse stretching. The crystallinity and content of

crystal form of the BOPP films were characterized by differential scanning calorimetry (DSC)

wide-angle X ray diffraction (WAXD) and solid-state nuclear magnetic resonance (SS-NMR) at different stretching temperatures and draw ratios. The results show that when stretched at a lower temperature along longitudinal direction

more crystals with thinner thickness are increased as the longitudinal tension ratio increases through recrystallization

while stretched along the longitudinal direction at higher temperature

there are more

crystals possessing well-ordered crystal structure; in the process of transverse stretching

increasing the transverse stretching temperature will promote the transformation from

crystal to

crystal. Meanwhile

the ratio of

crystals is not affected by the transverse drawing ratio

while increasing the transverse drawing ratio is beneficial to improving the crystallinity of the films.

关键词

BOPP电容器膜双向拉伸α晶型DSC

Keywords

BOPPCapacitor filmBiaxially stretchingα Crystal formDSC

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