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Thermal conductivity and dielectric properties of new recyclable boron nitride/epoxy resin composites
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Yu FENG1, Guanlin KUANG1, Dong YUE1, Victor O. Belko2, Sergey A. Maksimenko3, Zhou YANG4
Insulating Materials | 2024, 57(5) : 10 - 19
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Insulating Materials | 2024, 57(5): 10-19
• Special Issue on High-performance Transformer Insulation •
Thermal conductivity and dielectric properties of new recyclable boron nitride/epoxy resin composites
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Yu FENG1, Guanlin KUANG1, Dong YUE1, Victor O. Belko2, Sergey A. Maksimenko3, Zhou YANG4
Affiliations
  • 1School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
  • 2School of High Voltage Engineering, Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg 859111, Russia
  • 3Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus
  • 4Harbin Institute of Large Electric Machinery, Harbin 150040, China
Published: 2024-05-20 doi: 10.16790/j.cnki.1009-9239.im.2024.05.002
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Thermosetting epoxy resin is widely used in electrical equipment field due to its excellent thermal conductivity and insulating properties. Due to the stable three-dimensional network structure and insolubility of the thermosetting epoxy resin, its recycling and reuse pose challenges. In this paper, we added different mass fractions of boron nitride (BN) into the epoxy (EP)/4-methylhexahydrophthalic anhydride degradation system to prepare high thermal conductivity, high insulating, and degradable BN/EP composites, and studied their thermal conductivity, dielectric properties, and degradability. The results show that taking 2,4,6-tris(dimethylaminomethyl) phenol as the catalyst, the EP/BN composites can achieve atmospheric pressure degradation at 200℃ under the action of ethylene glycol. The thermal conductivity of BN/EP composite with 15% mass fraction of BN is 0.335 W/(m·K), which is 34% higher than that of pure EP resin; the AC electric strength is 101.7 kV/mm, which is 13% higher than that of pure EP resin. BN/EP composites can be degraded through transesterification to obtain EP degradation products (EDP). After the BN/EP composites are compounded with EDP, the thermal conductivity and electric strength of the BN/EP composites is basically unchanged.

epoxy-based composites  /  degradation recovery  /  thermal conductivity  /  dielectric properties  /  transesterification
Yu FENG, Guanlin KUANG, Dong YUE, Victor O. Belko, Sergey A. Maksimenko, Zhou YANG. Thermal conductivity and dielectric properties of new recyclable boron nitride/epoxy resin composites[J]. Insulating Materials, 2024 , 57 (5) : 10 -19 . DOI: 10.16790/j.cnki.1009-9239.im.2024.05.002
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Year 2024 volume 57 Issue 5
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2024.05.002
  • Receive Date：2023-10-10
  • Online Date：2025-12-22
  • Published：2024-05-20
Article Data
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History
  • Received：2023-10-10
  • Revised：2023-11-30
Funding
Affiliations
    1School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
    2School of High Voltage Engineering, Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg 859111, Russia
    3Institute for Nuclear Problems, Belarusian State University, Minsk 220030, Belarus
    4Harbin Institute of Large Electric Machinery, Harbin 150040, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.05.002
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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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