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Research on multi-performance synergistic enhancement of epoxy composite dielectrics by boron nitride nanosheets
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Haofeng ZHANG1, Wanli SHI2, Yang SONG2, Yihui LUO2, Peng ZHANG2, Fuli TENG3, Guoqing JIANG3, Junwen REN3
Insulating Materials | 2025, 58(5) : 30 - 41
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Insulating Materials | 2025, 58(5): 30-41
• Material Research •
Research on multi-performance synergistic enhancement of epoxy composite dielectrics by boron nitride nanosheets
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Haofeng ZHANG1, Wanli SHI2, Yang SONG2, Yihui LUO2, Peng ZHANG2, Fuli TENG3, Guoqing JIANG3, Junwen REN3
Affiliations
  • 1. Southern Power Grid Research Institute Co., Ltd., Guangzhou 510530, China
  • 2. Liuzhou Bureau of EHV Power Transmission Company, China Southern Power Grid, Liuzhou 545026, China
  • 3. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Published: 2025-05-20 doi: 10.16790/j.cnki.1009-9239.im.2025.05.005
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The disadvantages of poor thermal conductivity and mechanical properties severely restrict the further application of epoxy resin in electrical equipment insulation. Therefore, Epoxy composite dielectrics (EP/BNNS) with different BNNS contents were prepared by using nitride nanosheets (BNNS) as fillers. The phonon transport, stress distribution, polarization relaxation, trap distribution, and other conditions inside the epoxy composites dielectric were analyzed, and then the mechanisms of BNNS improving the thermal, mechanical, and electrical properties of the epoxy composite dielectric were systematically explored. The results show that when the BNNS filling mass fraction is 5.0%, the thermal conductivity of the epoxy composite dielectric reaches 0.36 W/(m·K), the bending strength and tensile strength reach 120 MPa and 57.4 MPa, respectively, and the electric strength reaches 96.9 kV/mm, while the composites dielectric also have good dielectric properties. The introduction of BNNS can optimize the thermal and mechanical properties of the epoxy composite dielectric without compromising their electrical performance.

epoxy resin  /  boron nitride nanosheets  /  thermal conductivity  /  mechanical properties  /  dielectric properties
Haofeng ZHANG, Wanli SHI, Yang SONG, Yihui LUO, Peng ZHANG, Fuli TENG, Guoqing JIANG, Junwen REN. Research on multi-performance synergistic enhancement of epoxy composite dielectrics by boron nitride nanosheets[J]. Insulating Materials, 2025 , 58 (5) : 30 -41 . DOI: 10.16790/j.cnki.1009-9239.im.2025.05.005
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.05.005
  • Receive Date：2024-07-05
  • Online Date：2025-12-04
  • Published：2025-05-20
Article Data
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History
  • Received：2024-07-05
  • Revised：2024-08-21
Funding
Affiliations
    1. Southern Power Grid Research Institute Co., Ltd., Guangzhou 510530, China
    2. Liuzhou Bureau of EHV Power Transmission Company, China Southern Power Grid, Liuzhou 545026, China
    3. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2025.05.005
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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
total species (%)		 属
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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