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Surface modification of nano-silica and preparation of corona resistant wire enamel
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Haolin CHENG1, Jianlin ZHOU2, 3, Rongjin ZENG1
Insulating Materials | 2023, 56(3) : 9 - 13
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Insulating Materials | 2023, 56(3): 9-13
• Material Research •
Surface modification of nano-silica and preparation of corona resistant wire enamel
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Haolin CHENG1, Jianlin ZHOU2, 3, Rongjin ZENG1
Affiliations
  • 1College of Chemistry and Chemical Engineering, Environment and Safety Engineering, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
  • 2Hunan Provincial Key Laboratory of Coal Resources Clean Utilization and Mine Environment Protection, Environment and Safety Engineering, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
  • 3School of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Published: 2023-03-20 doi: 10.16790/j.cnki.1009-9239.im.2023.03.002
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The problem of nanoparticle agglomeration in wire enamel can be solved by modification and gradual dispersion of nanoparticles. Five modifiers, emulsifier OP-10, silane coupling agent AP1231, silane coupling agent A112, γ-propyl trimethoxysilane (KH560), and N-[3-(trimethoxysilyl) propyl] ethylenediamine (KH-792), were used to modify the surface of nano silica particles. The effects of modifier type, modifier dosage, modification temperature and time on the modification effect of nano-SiO2 particles were explored. The effects of nano-SiO2 particles before and after modification on the performance of corona resistant wire enamel were compared by corona resistance test, and the dispersion of nano-SiO2 particles before and after modification was observed by transmission electron microscopy (TEM). The results indicate that the nanoparticles modified by KH-560 have the best dispersion in wire enamel, and the best process conditions are as follows: the dosage of KH-560 is 1.5wt%, the modification temperature is 90℃, and the modification time is 4 h. The wire enamel with high stability and higher than 50 h of corona resistance time can be obtained by gradually dispersing modified nanoparticles into the wire enamel, and the appropriate addition amount of nanoparticles is 13.5wt%.

nano-silica  /  modification  /  wire enamel  /  corona resistance
Haolin CHENG, Jianlin ZHOU, Rongjin ZENG. Surface modification of nano-silica and preparation of corona resistant wire enamel[J]. Insulating Materials, 2023 , 56 (3) : 9 -13 . DOI: 10.16790/j.cnki.1009-9239.im.2023.03.002
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doi: 10.16790/j.cnki.1009-9239.im.2023.03.002
  • Receive Date：2022-03-10
  • Online Date：2025-11-21
  • Published：2023-03-20
Article Data
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History
  • Received：2022-03-10
  • Revised：2022-04-19
Funding
Affiliations
    1College of Chemistry and Chemical Engineering, Environment and Safety Engineering, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    2Hunan Provincial Key Laboratory of Coal Resources Clean Utilization and Mine Environment Protection, Environment and Safety Engineering, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
    3School of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.03.002
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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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