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Effect of Microbead Content on Electrical Properties of Composite Foam Materials
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Meihua BIAN1, Feng PANG2, Xingsen ZHANG1, Xiaolin LI2, Jianing PENG1, Li TANG2
Insulating Materials | 2021, 54(10) : 51 - 55
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Insulating Materials | 2021, 54(10): 51-55
• Material Research •
Effect of Microbead Content on Electrical Properties of Composite Foam Materials
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Meihua BIAN1, Feng PANG2, Xingsen ZHANG1, Xiaolin LI2, Jianing PENG1, Li TANG2
Affiliations
  • 1Electric Power Science Research Institute of Guangxi Power Grid Co., Ltd., Nanning 530023, China
  • 2Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510640, China
Published: 2021-10-20 doi: 10.16790/j.cnki.1009-9239.im.2021.10.007
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A kind of composite foam material was prepared by adding hollow polymer microbeads to the organosilicon modified resin, and then the composite foam material was used as the internal filling material for the composite insulating cross-arm. The influence rule of the microbead type and filling content on the density, hydrophobicity, dielectric loss factor, and electric strength of the composite foam material was analyzed. The results show that the filling of organic microbeads can effectively reduce the density of the composite foam, and the density of the sample filled with 920DET40d25 microbeads can be reduced to 0.5538 g/cm3. Because there are more hydrophobic groups in the microbeads, the hydrophobicity of the composite foam material is enhanced. With the increase of the microbead content, the electric strength of composite foam material shows a downward trend, but the insulation strength of all the samples still meets the requirements of the internal insulation material for composite cross-arms. Considering the requirements of the density and insulation strength of the composite foam material, the sample filled with 920DET40d25 microbeads with a mass fraction of 2.5% meets the application requirements.

composite foams  /  porosity  /  hydrophobicity  /  dielectric loss factor  /  electric strength
Meihua BIAN, Feng PANG, Xingsen ZHANG, Xiaolin LI, Jianing PENG, Li TANG. Effect of Microbead Content on Electrical Properties of Composite Foam Materials[J]. Insulating Materials, 2021 , 54 (10) : 51 -55 . DOI: 10.16790/j.cnki.1009-9239.im.2021.10.007
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.10.007
  • Receive Date：2021-01-13
  • Online Date：2026-03-23
  • Published：2021-10-20
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  • Received：2021-01-13
  • Revised：2021-03-02
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    1Electric Power Science Research Institute of Guangxi Power Grid Co., Ltd., Nanning 530023, China
    2Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510640, China
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表12种不同金属材料的力学参数
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Number of
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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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