油浸处理引起BOPP粗化膜结构变化及其对性能的影响

姚成, 蔡希鹏, 刘刚, 贾磊, 汪鹏, 王铠, 蔡汉生, 高德民

PDF(2076 KB)
PDF(2076 KB)
塑料科技 ›› 2024, Vol. 52 ›› Issue (04) : 43-48. DOI: 10.15925/j.cnki.issn1005-3360.2024.04.009
理论与研究

油浸处理引起BOPP粗化膜结构变化及其对性能的影响

作者信息 +

Effects of Oil-impregnation on Structure and Property of Surface-Roughened BOPP Films

Author information +
History +

摘要

文章考察了两种双向拉伸聚丙烯(BOPP)粗化膜在油浸处理前后的结构及性能变化趋势。通过光学显微镜表征BOPP的表面粗化形貌,利用DSC和WAXD研究晶体结构、结晶性质,偏振红外技术评价取向结构,并且测试了薄膜的拉伸力学、热氧稳定和耐电压击穿性能。结果表明:两种链结构不同聚丙烯制备的BOPP薄膜,在油浸前后晶体结构没有明显改变;取向参数θjfj 显示油浸处理几乎不影响晶区取向结构,而无定形链的取向度降低。此外,油浸处理后高等规、窄分布薄膜的击穿场强从737 V/μm提高到863 V/μm。这是因为在油浸过程中会使无定形区发生取向松弛,消除内应力造成的结构缺陷,使得BOPP薄膜的击穿场强增加。

Abstract

In this study, the structure and properties of two surface-roughened films of biaxially oriented polypropylene (BOPP) before and after oil immersion were investigated. The roughening morphology of BOPP was characterized by optical microscopy, the crystal structure and crystallographic behavior were inspected by DSC and WAXD, and the orientation structure was evaluated by polarized infrared technology. The tensile mechanics, thermal oxidation stability and breakdown strength of the films were tested. The results show that the crystal structure of BOPP films prepared by two kinds of polypropylene with different chain characteristics does not change significantly before and after oil immersion. The orientation parameters θ j and fj suggest that the orientation of the amorphous chains is decreased by oil immersion. In addition, the oil immersion improved the breakdown strength of the film. For example, the breakdown strengths of the high tacticity and narrow distribution films are 737 V/μm (before oil immersion) and 863 V/μm (after oil immersion). These results indicate that soaking in the insulating oil medium for a long time, the orientation relaxation in the amorphous region can eliminate the structural defects caused by internal stress and increase the breakdown strength of BOPP films.

关键词

电容器用粗化膜 / 结晶 / 取向 / 无定形相 / 击穿场强

Key words

Surface-roughened film for capacitor / Crystallization / Orientation / Amorphous phase / Breakdown strength

中图分类号

TQ325.1+4

引用本文

导出引用
姚成 , 蔡希鹏 , 刘刚 , . 油浸处理引起BOPP粗化膜结构变化及其对性能的影响. 塑料科技. 2024, 52(04): 43-48 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.04.009
YAO Cheng, CAI Xi-peng, LIU Gang, et al. Effects of Oil-impregnation on Structure and Property of Surface-Roughened BOPP Films[J]. Plastics Science and Technology. 2024, 52(04): 43-48 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.04.009

参考文献

1
RITAMKI M, RYTLUOTO I, LAHTI K. Performance metrics for a modern BOPP capacitor film[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2019, 26: 1229-1237.
2
RYTÖLUOTO I, GITSAS A, PASANEN S, et al. Effect of film structure and morphology on the dielectric breakdown characteristics of cast and biaxially oriented polypropylene films[J]. European Polymer Journal, 2017, 95: 606-624.
3
HO J S, GREENBAUM S G. Polymer capacitor dielectrics for high temperature applications[J]. ACS Applied Materials & Interfaces, 2018, 10: 29189-29218.
4
KAHOULI A, GALLOT-LAVALLÉE O, RAIN P, et al. Structure effect of thin film polypropylene view by dielectric spectroscopy and X-ray diffraction: Application to dry type power capacitors[J]. Journal of Applied Polymer Science, 2015, DOI: 10.1002/app.42602.
5
PRATEEK, THAKUR V K, GUPTA R K. Recent progress on ferroelectric polymer-based nanocomposites for high energy density capacitors: Synthesis, dielectric properties, and future aspects[J]. Chemical Reviews, 2016, 116: 4260-4317.
6
UMRAN H M, WANG F P, HE Y S. Ageing: Causes and effects on the reliability of polypropylene film used for hvdc capacitor[J]. IEEE ACCESS, 2020, 8: 40413-40430.
7
DAI X Y, XING Z L, YANG W, et al. The effect of annealing on the structure and electric performance of polypropylene films[J]. International Journal of Polymer Science, 2022, DOI: 10.1155/2022/5970484.
8
LI Z L, DAI F M, WU Y, et al. Effect of crystalline morphology on electrical tree morphology and growth characteristics of PP insulation: From mesoscopic to macroscopic[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2023, 30: 989-996.
9
KAHOULI A, GALLOT-LAVALLÉE O, RAIN P, et al. Dielectric features of two grades of bi-oriented isotactic polypropylene[J]. Journal of Applied Polymer Science, 2015, DOI: 10.1002/app.42224.
10
ZHANG C S, REN C H, FENG Y, et al. Evolution characteristics of DC breakdown for biaxially oriented polypropylene films[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2023, 30: 1188-1196.
11
XIONG J, WANG X, ZHANG X, et al. How the biaxially stretching mode influence dielectric and energy storage properties of polypropylene films[J]. Journal of Applied Polymer Science, 2021, DOI: 10.1002/app.50029.
12
CAPT L, RETTENBERGER S, MUNSTEDT H, et al. Simultaneous biaxial stretching of polypropylene resins of varying tacticity part Ⅱ: Film morphology and properties[J]. International Polymer Processing, 2022, 20: 369-379.
13
WU T, WANG K, CHEN X F, et al. Practicing the concept of "structuring" processing in the manufacture of polymer films[J]. Science China Chemistry, 2023, 66: 993-1010.
14
TABATABAEI S H, CARREAU P J, AJJI A. Effect of processing on the crystalline orientation, morphology, and mechanical properties of polypropylene cast films and microporous membrane formation[J]. Polymer, 2009, 50: 4228-4240.
15
MANI M R, CHELLASWAMY R, MARATHE Y N, et al. New understanding on regulating the crystallization and morphology of the β-polymorph of isotactic polypropylene based on carboxylate-alumoxane nucleating agents[J]. Macromolecules, 2016, 49: 2197-2205.
16
GAJZLEROVA L, NAVRATILOVA J, ZENZINGEROVA S, et al. On isotactic polypropylene annealing: Difference in final properties of neat and β-nucleated polypropylene[J]. Express Polymer Letters, 2022, 16: 453-464.
17
LIU L Y, ZHAO Y, ZHANG C B, et al. Morphological characteristics of beta-nucleating agents governing the formation of the crystalline structure of isotactic polypropylene[J]. Macromolecules, 2021, 54: 6824-6834.
18
CAELERS H, DE COCK A, LOOIJMANS S, et al. An experimentally validated model for quiescent multiphase primary and secondary crystallization phenomena in PP with low content of ethylene comonomer[J]. Polymer, 2022, DOI: 10.1016/j.polymer.2022.124901.
19
WANG Y X, CHEN S P, WU T, et al. Yielding behavior of isotactic polypropylene at elevated temperature understood at the spherulite level[J]. Polymer, 2023, DOI: 10.1016/j.polymer.2023.126150.
20
WU T, XIANG M, CAO Y, et al. Influence of lamellar structure on double yield behavior and pore size distribution in β nucleated polypropylene stretched membranes[J]. RSC Advances, 2014, 4: 43012-43023.
21
ZHANG D X, DING L, YANG F, et al. Structural evolution of β-iPP with different supermolecular structures during the simultaneous biaxial stretching process[J]. Polymer Journal, 2021, 53: 331-344.
22
CHEN Q, WANG Z W, ZHANG S M, et al. Structure evolution and deformation behavior of polyethylene film during biaxial stretching[J]. ACS Omega, 2020, 5: 655-666.
23
QIAN C A, ZHAO Y, WANG Z F, et al. Probing the difference of crystalline modifications and structural disorder of isotactic polypropylene via high-resolution FTIR spectroscopy[J]. Polymer, 2021, DOI: 10.1016/j.polymer.2021.123722.
24
DI LISIO V, STURABOTTI E, FRANCOLINI I, et al. Isotactic polypropylene reversible crystallization investigated by modulated temperature and quasi-isothermal FTIR[J]. Journal of Polymer Science Part B: Polymer Physics, 2019, 57: 922-931.
25
K-HNITTA, SAWADA T, YOSHIDA S, et al. Three dimensional molecular orientation of isotactic polypropylene films under biaxial deformation at higher temperatures[J]. Polymer, 2015, 74: 30-37.
26
CHEN X Y, XIANG D, ZHOU Z X, et al. Biaxial stretching of polymer nanocomposites: A mini-review[J]. Frontiers in Materials, 2021, DOI: 10.3389/fmats.2021.725422.
27
PAWLAK A, KRAJENTA J, GALESKI A. The crystallization of polypropylene with reduced density of entanglements[J]. Journal of Polymer Science Part B: Polymer Physics, 2017, 55: 748-756.

评论

PDF(2076 KB)

Accesses

Citation

Detail

段落导航
相关文章

/