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Effect of water ingress into on-site aged silicone rubber on its properties
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Ying ZHOU1, Tingting WANG2, 3, Tingyu JIANG1, Bing LUO2, 3, Zhou ZUO1, Xidong LIANG1
Insulating Materials | 2023, 56(12) : 78 - 84
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Insulating Materials | 2023, 56(12): 78-84
• Advanced Electrical Materials for Large Capacity Offshore Wind Power Transmission •
Effect of water ingress into on-site aged silicone rubber on its properties
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Ying ZHOU1, Tingting WANG2, 3, Tingyu JIANG1, Bing LUO2, 3, Zhou ZUO1, Xidong LIANG1
Affiliations
  • 1State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing 100084, China
  • 2Electric Power Research Institute (CSG), Guangzhou 510663, China
  • 3National Engineering research Center of UHV Technology and Novel Electrical Equipment Basis, Guangzhou 510663, China
Published: 2023-12-20 doi: 10.16790/j.cnki.1009-9239.im.2023.12.010
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Silicone rubber composite insulators would produce powders on their surface after long-term operation in high humidity environment. In order to study the effect of water ingress into on-site aged silicone rubber on its properties, we used the composite insulator sheds which have operated over ten years in the southern coastal areas as research object. Deionized water immersion tests were conducted on the silicone rubber samples which have been removed their chalking layers to study the effect of water ingress into samples on their mass and physicochemical properties, and the influence of water ingress on the secondary chalking phenomenon of the silicone rubber was discussed. The results show that the silicone rubber samples which have removed their chalking layers could generate new chalking layers after deionized water immersion, whose microstructures and physicochemical properties were close to the naturally formed chalking layers. It is determined that water is the main influence factor which aged silicone rubbers produce powders on their surface again by changing the water temperature of tests, and high temperature can accelerate the generation of chalking layers.

outdoor insulation  /  silicone rubber  /  water ingress  /  microstructure  /  chalking
Ying ZHOU, Tingting WANG, Tingyu JIANG, Bing LUO, Zhou ZUO, Xidong LIANG. Effect of water ingress into on-site aged silicone rubber on its properties[J]. Insulating Materials, 2023 , 56 (12) : 78 -84 . DOI: 10.16790/j.cnki.1009-9239.im.2023.12.010
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Year 2023 volume 56 Issue 12
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.12.010
  • Receive Date：2023-01-20
  • Online Date：2025-11-24
  • Published：2023-12-20
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  • Received：2023-01-20
  • Revised：2023-05-16
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Affiliations
    1State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing 100084, China
    2Electric Power Research Institute (CSG), Guangzhou 510663, China
    3National Engineering research Center of UHV Technology and Novel Electrical Equipment Basis, Guangzhou 510663, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.12.010
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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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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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