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Effect of low temperature plasma modified SiO2 doping on electrical and mechanical properties of silicone rubber nanocomposites
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Tao YE, Zimo CAI, Yudi WANG, Guanxian YIN, Chun WANG, Qiang HUANG*
Insulating Materials | 2026, 59(4) : 19 - 28
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Insulating Materials | 2026, 59(4): 19-28
Material Research
Effect of low temperature plasma modified SiO2 doping on electrical and mechanical properties of silicone rubber nanocomposites
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Tao YE, Zimo CAI, Yudi WANG, Guanxian YIN, Chun WANG, Qiang HUANG*
Affiliations
  • Wenchang Power Supply Bureau of Hainan Power Grid Co., Ltd., Wenchang 571300, China
Published: 2026-04-20 doi: 10.16790/j.cnki.1009-9239.im.2026.04.003
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With its excellent insulating properties, silicone rubber has become the core material for key components of power equipment. In order to further improve the insulating performance of silicone rubber, the SiO2 was hydroxylated by low-temperature plasma and KH570 grafting, and doped into silicone rubber matrix to prepare SiO2/silicone rubber nanocomposites. The effect laws of different plasma modification conditions (time and frequency) on the surface morphology, surface flashover characteristics, mechanical characteristics, and surface hydrophobicity of SiO2/silicone rubber nanocomposites were systematically studied. The results show that appropriate plasma treatment time and frequency (10 min and 19 kHz) can effectively improve the surface hydrophobicity, electrical characteristics, and mechanical properties of silicone rubber. Plasma modification can effectively reduces the agglomeration of SiO2 nanoparticles in silicone rubber matrix, increase the deep trap density in composites and slow down the surface potential decay rate, thereby increasing the pollution flashover voltage of the composites. In addition, plasma modified SiO2 can significantly improve the tensile strength and hydrophobicity of SiO2/silicon rubber nanocomposites.

plasma  /  silicone rubber  /  surface flashover  /  surface charge accumulation
Tao YE, Zimo CAI, Yudi WANG, Guanxian YIN, Chun WANG, Qiang HUANG. Effect of low temperature plasma modified SiO2 doping on electrical and mechanical properties of silicone rubber nanocomposites[J]. Insulating Materials, 2026 , 59 (4) : 19 -28 . DOI: 10.16790/j.cnki.1009-9239.im.2026.04.003
Year 2026 volume 59 Issue 4
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doi: 10.16790/j.cnki.1009-9239.im.2026.04.003
  • Receive Date:2025-06-19
  • Online Date:2026-09-10
  • Published:2026-04-20
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  • Received:2025-06-19
  • Revised:2025-08-19
Affiliations
    Wenchang Power Supply Bureau of Hainan Power Grid Co., Ltd., Wenchang 571300, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2026.04.003
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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