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Influence Mechanism of Microstructure on Electrical Properties of Polypropylene Resin for Capacitor
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Lu CHENG1, Wenfeng LIU1, Yuwei MA1, Hongbo LIU1, Zhe XU1, Chong ZHANG2, Xiying DAI2, Zhaoliang XING2
Insulating Materials | 2022, 55(10) : 33 - 38
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Insulating Materials | 2022, 55(10): 33-38
• Material Research •
Influence Mechanism of Microstructure on Electrical Properties of Polypropylene Resin for Capacitor
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Lu CHENG1, Wenfeng LIU1, Yuwei MA1, Hongbo LIU1, Zhe XU1, Chong ZHANG2, Xiying DAI2, Zhaoliang XING2
Affiliations
  • 1State Key Laboratory of Power Equipment and Electrical Insulation, Xi'an Jiaotong University, Xi'an 710049, China
  • 2Global Energy Interconnection Research Institute Co., Ltd., Beijing 102209, China
Published: 2022-10-20 doi: 10.16790/j.cnki.1009-9239.im.2022.10.006
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Three typical imported PP resins with a large market share for capacitor application were chosen, and their molecule structure, aggregation structure, and electrical properties were systematically measured. The influence law of molecular weight and distribution on the crystallization properties, as well as the action mechanism of crystallization properties on dielectric and breakdown properties was investigated, and in consequence the correlations between microstructure and macroscopic electrical properties was built. The results show that optimizing the molecular weight and distribution avoiding too large and narrow can contribute to regular and compact alinement and stacking of molecules, and then the orientation of dipole and transportation of electrons can be inhibited, resulting in the decrease of dielectric loss and increase of breakdown strength.

capacitor  /  polypropylene  /  aggregation structure  /  breakdown strength
Lu CHENG, Wenfeng LIU, Yuwei MA, Hongbo LIU, Zhe XU, Chong ZHANG, Xiying DAI, Zhaoliang XING. Influence Mechanism of Microstructure on Electrical Properties of Polypropylene Resin for Capacitor[J]. Insulating Materials, 2022 , 55 (10) : 33 -38 . DOI: 10.16790/j.cnki.1009-9239.im.2022.10.006
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Year 2022 volume 55 Issue 10
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.10.006
  • Receive Date：2021-09-24
  • Online Date：2025-12-23
  • Published：2022-10-20
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History
  • Received：2021-09-24
  • Revised：2021-11-19
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    1State Key Laboratory of Power Equipment and Electrical Insulation, Xi'an Jiaotong University, Xi'an 710049, China
    2Global Energy Interconnection Research Institute Co., Ltd., Beijing 102209, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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