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Effect of Amino Modified Boron Nitride Nanosheets on Surface Insulation Properties of Epoxy Resin
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Yongning WANG, Xuan LU, Lidong YAN, Yuyan MAN, Xiaoguang XI
Insulating Materials | 2021, 54(9) : 48 - 54
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Insulating Materials | 2021, 54(9): 48-54
• Material Research •
Effect of Amino Modified Boron Nitride Nanosheets on Surface Insulation Properties of Epoxy Resin
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Yongning WANG, Xuan LU, Lidong YAN, Yuyan MAN, Xiaoguang XI
Affiliations
  • Maintenance Company of State Grid Tianjin Electric Power Company, Tianjin 300232, China
Published: 2021-09-20 doi: 10.16790/j.cnki.1009-9239.im.2021.09.007
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Taking urea and hexagonal boron nitride as raw materials, we prepared an amino modified boron nitride nanosheets (BNNS) by ball milling method, and then prepared a BNNS/epoxy composite by mixing the BNNS before and after modification with epoxy resin. The effect of amino modified BNNS on the surface insulating properties of epoxy resin was studied. The results show that the amino group is grafted on the surface of BNNS successfully by ball milling method, which improves the dispersion of fillers in epoxy composites. When the mass fraction of the modified BNNS is 0.5%, the flashover voltage of the BNNS/epoxy composite increases by 26.9% compared with the pure epoxy resin. In addition, the amino modification reduces the trap energy level on material surface and accelerates the space charge dissipation rate. The dielectric constant and dielectric loss factor of the composites filled with amino modified BNNS increase slightly. The flashover voltage of the composites can be improved by balancing the effects of space charge dissipation and polarization relaxation.

epoxy resin  /  boron nitride  /  amino modification  /  surface flashover  /  space charge  /  dielectric constant
Yongning WANG, Xuan LU, Lidong YAN, Yuyan MAN, Xiaoguang XI. Effect of Amino Modified Boron Nitride Nanosheets on Surface Insulation Properties of Epoxy Resin[J]. Insulating Materials, 2021 , 54 (9) : 48 -54 . DOI: 10.16790/j.cnki.1009-9239.im.2021.09.007
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Year 2021 volume 54 Issue 9
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doi: 10.16790/j.cnki.1009-9239.im.2021.09.007
  • Receive Date：2020-10-09
  • Online Date：2026-03-20
  • Published：2021-09-20
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  • Received：2020-10-09
  • Revised：2020-11-16
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    Maintenance Company of State Grid Tianjin Electric Power Company, Tianjin 300232, China
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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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