Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors

Chong Zhang; Xi-Ying Dai; Zhao-Liang Xing; Shao-Wei Guo; Fei Li; Xin Chen; Jian-Jun Zhou; Lin Li

doi:10.1007/s10118-022-2805-2

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Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors

RESEARCH ARTICLE | Updated：2022-11-16

- Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors
- Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors
- 高分子科学（英文版） 2022年40卷第12期页码：1688-1696
- Affiliations：
  
  a.State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co. Ltd., Beijing 102209, China
  b.Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China
- Author bio：
  
  daixiying@geiri.sgcc.com.cn (X.Y.D.)
  11112010101@bnu.edu.cn (J.J.Z.)
- Funds：
  
  This study was financially supported by the State Key Laboratory of Advanced Power Transmission Technology (No. GEIRI-SKL-2020-009).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-022-2805-2.
- DOI：10.1007/s10118-022-2805-2
  中图分类号：
- 收稿：2022-04-26，
  
  修回：2022-5-10，
  
  录用：2022-5-19，
  
  网络首发：2022-09-02，
  
  纸质出版：2022-12-01
- Accepted：
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Zhang, C.; Dai, X. Y.; Xing, Z. L.; Guo, S. W.; Li, F.; Chen, X.; Zhou, J. J.; Li, L. Investigation on the structure and performance of polypropylene sheets and bi-axially oriented polypropylene films for capacitors. Chinese J. Polym. Sci. 2022, 40, 1688–1696

Chong Zhang, Xi-Ying Dai, Zhao-Liang Xing, et al. Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors[J]. Chinese Journal of Polymer Science, 2022, 40(12): 1688-1696.
Zhang, C.; Dai, X. Y.; Xing, Z. L.; Guo, S. W.; Li, F.; Chen, X.; Zhou, J. J.; Li, L. Investigation on the structure and performance of polypropylene sheets and bi-axially oriented polypropylene films for capacitors. Chinese J. Polym. Sci. 2022, 40, 1688–1696 DOI： 10.1007/s10118-022-2805-2.

Chong Zhang, Xi-Ying Dai, Zhao-Liang Xing, et al. Investigation on the Structure and Performance of Polypropylene Sheets and Bi-axially Oriented Polypropylene Films for Capacitors[J]. Chinese Journal of Polymer Science, 2022, 40(12): 1688-1696. DOI： 10.1007/s10118-022-2805-2.

摘要

Biaxially oriented polypropylene (BOPP) films were prepared by sheet casting and biaxial stretching. The relationship between morphology

structure and electric breakdown strength (

) of PP sheet and BOPP film was studied. The Eb of BOPP film could be improved by controlling the chill roll temperature and heat setting time.

Abstract

Polypropylene (PP) sheets are cast with various chill roll temperatures and rates

which are studied with differential scanning calorimetry

wide angel X-ray diffraction

scanning electronic microscopy and dielectric withstand voltage test system. The results show that increasing the chill roll temperature and cast rate can promote the increase of crystallinity and the growth of

-form. The PP sheets have asymmetric skin layer structures. The lower the chill roll temperature

the thicker the skin layer

the smaller the spherulite size. The electric breakdown strength (

) of PP sheets is mainly affected by the crystallinity but not the morphology. The PP sheets are further stretched to prepare bi-axially oriented PP (BOPP) films with various heat setting time. Our results indicate that the structure of PP sheets affects the properties of BOPP films. The as prepared BOPP films from the sheets cast at high chill roll temperature and rate have the highest crystallinity and

. Heat setting time has profound effect on the crystallinity and

which increase first and then decrease with the heat setting time. It is expected that our study can provide guidance for optimizing process parameters.

关键词

Keywords

references

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