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Study on Improving Moisture Resistance of Epoxy Insulation Material with Hydroxyl Terminated Polydimethylsiloxane for Metal Film Resistor
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Dengyun LI1, Changxi YUE1, Song ZHANG2, Kai ZHU1, Jicheng YU1, Ziyang ZHANG2
Insulating Materials | 2021, 54(9) : 41 - 47
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Insulating Materials | 2021, 54(9): 41-47
• Material Research •
Study on Improving Moisture Resistance of Epoxy Insulation Material with Hydroxyl Terminated Polydimethylsiloxane for Metal Film Resistor
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Dengyun LI1, Changxi YUE1, Song ZHANG2, Kai ZHU1, Jicheng YU1, Ziyang ZHANG2
Affiliations
  • 1China Electric Power Research Institute Co., Ltd., Wuhan 430074, China
  • 2School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Published: 2021-09-20 doi: 10.16790/j.cnki.1009-9239.im.2021.09.006
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An epoxy insulating material with high moisture resistance was prepared by grafting the hydroxyl terminated polydimethylsiloxane on o-cresol epoxy resin, and its properties were analyzed from the perspective of theoretical calculation and experiment. The results show that when the mass fraction of hydroxyl terminated polydimethylsiloxane is 10%, the modulus and toughness of the modified epoxy resin are higher, the volume change rate at high temperature is smaller. In the layer model of modified epoxy resin and water, the water molecules diffuse away from the epoxy resin. The water absorption of modified epoxy resin is decreased by 13.74% compared with the unmodified epoxy resin. After water absorption, both the volume resistivity and surface resistivity of the modified epoxy resin sample are higher than those of the unmodified epoxy resin, and its electric strength increases by 1.1 kV/mm compared with the unmodified epoxy resin.

metal film resistor  /  epoxy insulating material  /  hydroxyl terminated polydimethylsiloxane  /  moisture resistance
Dengyun LI, Changxi YUE, Song ZHANG, Kai ZHU, Jicheng YU, Ziyang ZHANG. Study on Improving Moisture Resistance of Epoxy Insulation Material with Hydroxyl Terminated Polydimethylsiloxane for Metal Film Resistor[J]. Insulating Materials, 2021 , 54 (9) : 41 -47 . DOI: 10.16790/j.cnki.1009-9239.im.2021.09.006
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doi: 10.16790/j.cnki.1009-9239.im.2021.09.006
  • Receive Date：2020-10-05
  • Online Date：2026-03-20
  • Published：2021-09-20
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History
  • Received：2020-10-05
  • Revised：2020-11-04
Affiliations
    1China Electric Power Research Institute Co., Ltd., Wuhan 430074, China
    2School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.09.006
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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
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Genus		 种数
Number of
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Percentage of total
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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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