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Study on self-healing properties of polyurethane microcapsules/epoxy resin composite insulating materials
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Kaisen FAN, Gang FU, Dong WANG, Wei YANG, Siyuan CHENG, Yaguang TAO, Honglu GUAN
Insulating Materials | 2025, 58(4) : 45 - 51
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Insulating Materials | 2025, 58(4): 45-51
Material Research
Study on self-healing properties of polyurethane microcapsules/epoxy resin composite insulating materials
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Kaisen FAN, Gang FU, Dong WANG, Wei YANG, Siyuan CHENG, Yaguang TAO, Honglu GUAN
Affiliations
  • State Grid Henan Electric Power Research Institute, Zhengzhou 450000, China
Published: 2025-04-20 doi: 10.16790/j.cnki.1009-9239.im.2025.04.007
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Cracks will occur inside and on the surface of epoxy resin under the action of complex factors such as strong electric fields and mechanical vibrations, leading to a decline of its insulation performance. Therefore, a water-triggered self-healing microcapsule was prepared by interfacial polymerization, and a water-triggered self-healing microcapsule/epoxy resin composite insulating material was prepared through high-temperature curing. Then the dielectric properties, tensile properties, and electric strength of the composite insulating material were characterized. The results show that the composite insulating material not only maintains good mechanical, insulation, and dielectric properties, but also has excellent self-healing performance, with a self-healing efficiency of 93.45%.

epoxy resin  /  microcapsule  /  composite insulating material  /  self-healing
Kaisen FAN, Gang FU, Dong WANG, Wei YANG, Siyuan CHENG, Yaguang TAO, Honglu GUAN. Study on self-healing properties of polyurethane microcapsules/epoxy resin composite insulating materials[J]. Insulating Materials, 2025 , 58 (4) : 45 -51 . DOI: 10.16790/j.cnki.1009-9239.im.2025.04.007
Year 2025 volume 58 Issue 4
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.04.007
  • Receive Date:2024-04-02
  • Online Date:2025-11-07
  • Published:2025-04-20
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  • Received:2024-04-02
  • Revised:2024-05-07
Affiliations
    State Grid Henan Electric Power Research Institute, Zhengzhou 450000, China
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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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