Study on Aging Characteristics of Polypropylene Film Under Electric-thermal-oil Coupling Condition

CHU Yang; LI Zhiyuan; CUI Yuxin; CHENG Lu; LIU Wenfeng; GAI bin; JIA Hua; YOU Hongpeng

doi:10.14044/j.1674-1757.pcrpc.2025.06.003

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Study on Aging Characteristics of Polypropylene Film Under Electric-thermal-oil Coupling Condition

POWER CAPACITOR & REACTIVE POWER COMPENSATION | Capacitor

Study on Aging Characteristics of Polypropylene Film Under Electric-thermal-oil Coupling Condition
电-热-油耦合作用下聚丙烯薄膜老化特性研究
State Key Laboratory of Electrical Insulation and Power Equipment，Xi'an Jiaotong University，Xi'an 710049，China
Xi'an High Voltage Apparatus Research Institute Co.，Ltd.，Xi'an 710077，China
Vol. 46, Issue 6, Pages: 19-26(2025)
DOI：10.14044/j.1674-1757.pcrpc.2025.06.003
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CHU Yang, LI Zhiyuan, CUI Yuxin, et al. Study on Aging Characteristics of Polypropylene Film Under Electric-thermal-oil Coupling Condition[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(6): 19-26.
DOI：

CHU Yang, LI Zhiyuan, CUI Yuxin, et al. Study on Aging Characteristics of Polypropylene Film Under Electric-thermal-oil Coupling Condition[J]. Power Capacitor & Reactive Power Compensation, 2025, 46(6): 19-26. DOI： 10.14044/j.1674-1757.pcrpc.2025.06.003.

摘要

油浸式电容器具有高可靠性、低成本等优点，广泛应用于电力系统中，承担无功补偿、滤波等作用。随着电力系统对电容器储能密度要求的提升，传统双向拉伸聚丙烯（BOPP）薄膜的储能特性已逐渐无法满足需求；尽管高储能密度介质材料的研发取得了显著成果，但开发高性能油浸式电容器的前提在于揭示介质材料在油浸式电容器实际工况下的老化机理。因此，本文提出系统研究BOPP薄膜在电-热-油耦合条件下的老化特性。通过搭建电-热-油耦合老化实验平台，开展1000 h的电热老化实验，获得了浸渍在苄基甲苯（M/DBT）中的BOPP薄膜试样。对老化前后BOPP薄膜开展红外光谱（FTIR）、差式扫描量热分析（DSC）、动态热机械分析（DMA）、直流击穿等测试。结果表明：浸渍剂小分子进入BOPP分子间隙，一方面起到柔顺分子链段的作用，分子链段运动活化能降低，另一方面电热油耦合作用破坏了分子链段的规整性，导致薄膜击穿场强降低了14.85%。该研究可为油浸式电容器介质材料和浸渍剂的开发提供数据支撑和理论基础。

Abstract

Oil-immersed capacitors are widely used in power systems for reactive power compensation and filtering due to their advantages of high reliability and low cost. With the increasing demand of energy storage density of capacitors in power systems，the energy storage performance of traditional biaxially oriented polypropylene（BOPP）film has gradually been unable to meet the demand. Although the research of materials with high energy storage density has achieved remarkable results，yet the prerequiste for developing high property oil-immersed capacitors is to reveal the aging characteristics of dielectric materials in actual condition of oil-immersed capacitors. Therefore，in this paper a systematic study on the aging characteristics of BOPP film under electric-thermal-oil coupling condition is proposed. The electric-thermal aging experiment for 1000 hours is performed by way of setting up electric-thermal-oil coupling aging experimental platform and the The BOPP film samples immersed in benzyl toluene impregnating agent（M/DBT）are obtained. Such tests as Fourier transform infrared spectrometer（FTIR），differential scanning calorimetry（DSC），dynamic thermomechanical analysis（DMA）and direct current breakdown are performed on the BOPP film before and after aging. The results show that small molecules of impregnating agent enter into the molecular gap of BOPP which，on the one hand，plays the role of softening molecular chain and reduces the activation energy of molecular chain segments and，on the other hand，the coupling effect of the electric-thermal-oil destroys the regularity of molecular chain segment，resulting in the decrease of the breakdown strength of the films by 14.85% . The study provides data support and theoretical foundation for the development of dielectric materials and impregnating agent for oil-immersed capacitors.

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references

LI Hua，LI Zhiwei，XU Zhijian，et al. Electric field and temperature dependence of electrical conductivity in biaxially oriented polypropylene films[J]. IEEE Transactions on Plasma Science，2014，42（11）：3585-3591.

XIONG Jie，WANG Xin，ZHANG Xiao，et al. How the biaxially stretching mode influence dielectric and energy storage properties of polypropylene films[J]. Journal of Applied Polymer Science，2021，138（11）：50029.

ZHANG Chuansheng，REN Chenhua，FENG Yu，et al. Evolution characteristics of DC breakdown for biaxially oriented polypropylene films[J]. IEEE Transactions on Dielectrics and Electrical Insulation，2023，30（3）：1188-1196.

LI Zhen，HAN Yongsen，MIN Daomin，et al. Investigation of temperature dependent DC breakdown mechanism of EP/TiO 2 nanocomposites[J ] . Applied Physics Letters，2022，121（5）：35-43.

LI Jianying，ZHOU Fusheng，MIN Daomin，et al. The ener gy distribution of trapped charges in polymers based on isothermal surface potential decay model[J]. IEEE Transactions on Dielectrics and Electrical Insulation，2015，22（3）：1723-1732.

郑明胜，钟少龙，裴家耀，等.改性聚丙烯薄膜电容器制备工艺和性能研究[J].绝缘材料，2022，55（10）：1-5.

ZHENG Mingsheng，ZHONG Shaolong，PEI Jiayao，et al. Research on preparation process and properties of modified polypropylene film capacitors[J]. Insulating Materials，2022，55（10）：1-5.

谢兵，蔡金峡，王铜铜，等.高储能密度聚合物基多层复合电介质的研究进展[J].无机材料学报，2023，38（2）：137-147.

XIE Bing，CAI Jinxia，WANG Tongtong，et al. Research progress of polymer-based multilayer composite dielectrics with high energy storage density[J]. Journal of Inorganic Materials，2023，38（2）：137-147.

于海生，王瑶，邓元.聚丙烯/氮化硼纳米片复合薄膜的制备及介电储能性能研究[J].功能材料，2020，51（7）：7141-7147.

YU Haisheng，WANG Yao，DENG Yuan. Preparation of polypropylene/BNNSs composite films and studies on their dielectric and energy storage properties[J]. Journal of Functional Materials，2020，51（7）：7141-7147.

张子琦，刘宏博，马宇威，等.锆钛酸钡/聚丙烯纳米复合介质的电学性能及储能特性研究[J].绝缘材料，2022，55（12）：61-68.

ZHANG Ziqi，LIU Hongbo，MA Yuwei，et al. Electrical properties and energy storage characteristic of Barium Zirconate Titanate/polypropylene Nanocomposites[J]. Insulating Materials，2022，55（12）：61-68.

TIAN Wenchao，YAN Fei，CAI Cailing，et al. Freezedrying and hot-pressing strategy to embed two-dimensional Ti0.87O 2 monolayers in commercial polypropylene films with enhanced dielectric properties[J ] . Journal of Advanced Ceramics，2021，10（2）：368-376.

YAO Junlong，HU Li，ZHOU Min，et al. Synergistic enhancement of thermal conductivity and dielectric properties in Al-O-/BaTiO-/PP composites[J]. Materials，2018，11（9）：1536.

刘文凤，刘标，程璐.高储能聚合物电介质材料研究进展[J].高电压技术，2023，49（3）：1046-1054.

LIU Wenfeng，LIU Biao，CHENG Lu. Research progress of high energy storage dielectric polymer materials[J]. High Voltage Engineering，2023，49（3）：1046-1054.

LI Junluo，WANG Shaojie，ZHU Yujie，et al. Biaxially oriented films of grafted-polypropylene with giant energy density and high efficiency at 125℃[J]. Journal of Materials Chemistry，2023，11（20）：10659-10668.

程璐，刘宏博，刘标，等.三元复合聚丙烯电介质材料性能调控研究进展[J].高电压技术，2024，50（6）：2332-2343.

CHENG Lu，LIU Hongbo，LIU Biao，et al. Recent research improvements in ternary polypropylene dielectric materials [J]. High Voltage Engineering，2024，50（6）：2332-2343.

LIU Wenfeng，LIU Hongbo，CHENG Lu，et al. Enhanced energy storage performance in polypropylene-acrylic acid grafted polypropylene-ZrO 2 ternary nanocomposites[J ] . Journal of Physics D-Applied Physics，2023，56（24）：244001.

赵凯林.电力电容器中油膜绝缘电老化与热老化的介电响应特性研究[D].重庆：重庆大学，2021.

马宇威，程璐，刘宏博，等.双向拉伸聚丙烯薄膜聚集态结构与击穿特性的关联[J].绝缘材料，2023，56（1）：1-7.

MA Yuwei，CHENG Lu，LIU Hongbo，et al. Correlation between aggregation structure of biaxially oriented polypropylene and its breakdown property[J]. Insulating Materials，2023，56（1）：1-7.

LI Yanzhi，ZHOU Yihan，XING Zhaoliang，et al. Compatibility investigations of natural ester for capacitor application [C]//2024 IEEE14th International Conference on the Properties and Applications of Dielectric Materials（ICPADM）. [S. l. ]：IEEE，2024：214-217.

李鹏，孔令杰，高显振，等.二苄基甲苯的合成表征及热稳定性能的研究[J].润滑油，2013，28（6）：40-44.

LI Peng，KONG Lingjie，GAO Xianzhen，et al. Synthesis and characterization of dibenzyl-toluene and study on its thermal stability[J]. Lubricating Oil，2013，28（6）：40-44.

钟力生.工程电介质物理与介电现象[M].西安：西安交通大学出版社，2013.

NISHINO T，MATSUMOTO T，NAKAMAE K. Surface structure of isotactic polypropylene by X-ray diffraction[J]. Polymer Engineering & Science，2000，40（2）：336-343.

刘宏博，程璐，徐哲，等.热老化对电容器用聚丙烯薄膜结构及电学性能的影响[J].绝缘材料，2023，56（2）：96-103.

LIU Hongbo，CHENG Lu，XU Zhe，et al. Influence of thermal ageing on structure and electrical properties of polypropylene film for capacitors[J]. Insulating Materials，2023，56（2）：96-103.

CHENG Lu，LIU Wengfeng，LIU Hongbo，et al. Evolution of dielectric relaxation under elevated electric field of polypropylene-based films[J]. Journal of Physics D-Applied Physics，2020，53（44）：445502.

钟少龙，方立龙，王昕劼，等.金属化薄膜电容器元件电-磁-热耦合特性仿真研究[J].电力电容器与无功补偿，2025，46（3）：51-60.

ZHONG Shaolong，FANG Lilong，WANG Xinjie，et al. Sim ulation of electric-magnetic-thermal coupling characteristics of metallized film capacitor elements[J]. Power Capacitor & Reactive Power Compensation，2025，46(3): 51-60.

湛海涯，信建伟，王忠辉.电力电容器用聚丙烯薄膜微观结构对性能的影响研究[J].电力电容器与无功补偿，2025，46（1）：45-51.

ZHAN Haiya，XIN Jianwei，WANG Zhonghui. Research on influence of microstructure of polypropylene film of power capacitor on its performance[J]. Power Capacitor & Reactive Power Compensation，2025，46（1）：45-51.

STAMM M. Introduction to physical polymer science[J]. Macromolecular Chemistry and Physics，2006，207（8）：787-787.

左强林，雷乔舒，严浩，等.浅议直流支撑电容器中的空间电荷问题[J].电力电容器与无功补偿，2025，46（1）：23-28.

ZUO Qianglin，LEI Qiaoshu，YAN Hao，et al. Discussion on space charge in DC-link capacitor[J]. Power Capacitor &Reactive Power Compensation，2025，46（1）：23-28.

左强林，雷乔舒.电容器不同介质结构直流和交流试验电压比值的理论研究[J].电力电容器与无功补偿，2025，46（1）：29-34.

ZUO Qianglin，LEI Qiaoshu. Theoretical study on DC-AC test voltage ratio of different dielectric systems in capacitor [J]. Power Capacitor & Reactive Power Compensation，2025，46（1）：29-34.

程璐，漆乐俊，姚成，等.电热老化对聚丙烯薄膜形态及击穿特性的影响[J].电力电容器与无功补偿，2015，36（6）：69-72.

CHENG Lu，QI Lejun，YAO Cheng，et al. Influence of electric-thermal aging on BOPP film morphology and breakdown performance[J]. Power Capacitor & Reactive Power Compensation，2015，36（6）：69-72.

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