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Effect of Double-layer Surface Modified Boron Nitride Nanosheet on Thermal Stability of Epoxy-based Insulating Materials
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Yi WU, Zhigang LI, Zhichen LIU, Xianwen CHENG, Zirui YANG, Jian ZENG
Insulating Materials | 2022, 55(2) : 44 - 50
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Insulating Materials | 2022, 55(2): 44-50
• Material Research •
Effect of Double-layer Surface Modified Boron Nitride Nanosheet on Thermal Stability of Epoxy-based Insulating Materials
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Yi WU, Zhigang LI, Zhichen LIU, Xianwen CHENG, Zirui YANG, Jian ZENG
Affiliations
  • Yancheng Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd., Yancheng 224000, China
Published: 2022-02-20 doi: 10.16790/j.cnki.1009-9239.im.2022.02.006
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Dopamine (DA) and 3-glycidoxypropyltrimethoxysilane (KH560) were used to double-layer surface modification of boron nitride nanosheet (BNNS), the effect of the modified BNNS on thermal stability of epoxy-based (EP) insulating materials was discussed combining FTIR, TGA, and SEM experimental test with reactive molecular dynamics simulation. The results show that both methods of grafting KH560 at the end of polydopamine (PDA) and grafting DA at the end of KH560 can modify the BNNS surface successfully, and the double-layer surface modified BNNSs have better dispersion in composites. Besides, the breakdown strength of double-layer surface modified BNNS/EP composites is higher than 31.2 kV/mm. The thermal stability of composites can be obviously improved by double-layer surface modification, the improving effect of grafting DA at the end of KH560 is optimal. The modification of double-layer covalent bond grafting long chains that grafting DA at the end of KH560 can improve the interfacial compatibility, which can enhance the interaction force between BNNN and EP matrix. Moreover, the long chain branch is beneficial to fill the void inside the materials, and so that the thermal stability of composites increases.

epoxy resin  /  boron nitride nanosheet  /  double-layer surface modification  /  composite materials  /  insulating properties  /  thermal stability
Yi WU, Zhigang LI, Zhichen LIU, Xianwen CHENG, Zirui YANG, Jian ZENG. Effect of Double-layer Surface Modified Boron Nitride Nanosheet on Thermal Stability of Epoxy-based Insulating Materials[J]. Insulating Materials, 2022 , 55 (2) : 44 -50 . DOI: 10.16790/j.cnki.1009-9239.im.2022.02.006
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Year 2022 volume 55 Issue 2
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doi: 10.16790/j.cnki.1009-9239.im.2022.02.006
  • Receive Date：2021-04-03
  • Online Date：2025-12-22
  • Published：2022-02-20
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  • Received：2021-04-03
  • Revised：2021-05-04
Affiliations
    Yancheng Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd., Yancheng 224000, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.02.006
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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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