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Effects of ZnO morphology and particle size on surface charge transport and surface flashover performance of EP composites
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Guohua YIN1, Qijun DUAN1, Shuai SHAO2, Guowei XIA1, Jingwei LI1, Yuyao ZHONG1, Qing XIE1
Insulating Materials | 2024, 57(3) : 50 - 57
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Insulating Materials | 2024, 57(3): 50-57
• Material Research •
Effects of ZnO morphology and particle size on surface charge transport and surface flashover performance of EP composites
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Guohua YIN1, Qijun DUAN1, Shuai SHAO2, Guowei XIA1, Jingwei LI1, Yuyao ZHONG1, Qing XIE1
Affiliations
  • 1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
  • 2State Grid Changchun Power Supply Company, Changchun 130000, China
Published: 2024-03-20 doi: 10.16790/j.cnki.1009-9239.im.2024.03.007
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The morphology and particle size of inorganic fillers are key factors that affect the surface voltage resistance of epoxy resin (EP) composites. In this study, the ZnO nanofibers and particle-shaped ZnO with different particle sizes were used to dope and modify epoxy resin to prepared EP composites, and the DC surface flashover performance and charge dissipation rate of the composites were tested. The results show that the doping of ZnO filler can effectively improve the flashover voltage of EP composites, and the improvement effect of fibrous ZnO filler is significantly better than that of particle-shaped ZnO filler. The flashover voltage of particle ZnO/EP increases with the decrease of filler particle size. When the mass fraction of ZnO nanofiber is 15%, the flashover voltage of EP composite increases by 27.1% compared with that of the pure EP. A finite element simulation model was constructed, and the calculation results show that the fibrous ZnO increases the non-uniform coefficient of the internal electric field in EP, and increases the current density of the composites.

epoxy resin  /  zinc oxide  /  morphology and particle size  /  surface flashover  /  surface charge
Guohua YIN, Qijun DUAN, Shuai SHAO, Guowei XIA, Jingwei LI, Yuyao ZHONG, Qing XIE. Effects of ZnO morphology and particle size on surface charge transport and surface flashover performance of EP composites[J]. Insulating Materials, 2024 , 57 (3) : 50 -57 . DOI: 10.16790/j.cnki.1009-9239.im.2024.03.007
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2024.03.007
  • Receive Date：2023-04-03
  • Online Date：2025-12-22
  • Published：2024-03-20
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  • Received：2023-04-03
  • Revised：2023-05-13
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    1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
    2State Grid Changchun Power Supply Company, Changchun 130000, 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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