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Preparation and Dielectric Properties of Corona-resistant Nano-organosilicone Oxide Hybrid Polyamide-imide Composite Film
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Li LIU, Keqiang WANG, Hao CHEN, Wei ZHAO, Yong FAN
Insulating Materials | 2021, 54(9) : 30 - 35
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Insulating Materials | 2021, 54(9): 30-35
• Material Research •
Preparation and Dielectric Properties of Corona-resistant Nano-organosilicone Oxide Hybrid Polyamide-imide Composite Film
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Li LIU, Keqiang WANG, Hao CHEN, Wei ZHAO, Yong FAN
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  • School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
Published: 2021-09-20 doi: 10.16790/j.cnki.1009-9239.im.2021.09.004
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A nano organic silicone oxide sol was prepared by the hydrolysis and polymerization of methyl triethoxysilane and tetraethyl orthosilicate, which was converted into SiO2 equivalent to mixed with polyamide-imide (PAI) resin through high-speed shearing, and then organic silicone oxide hybrid PAI composite films were prepared through film spreading and thermal curing. The composite films were characterized by infrared spectroscopy, X-ray diffraction, and SEM, and their dielectric spectra, electric strength, and corona resistance lifetime at high temperature (155℃) were tested. The results show that the nano organic silicone oxides disperse uniformly in an amorphous state in the resin matrix. With the increase of the nano organic silicone oxide content, the dielectric constant and dielectric loss factor of the hybrid PAI composite films increase gradually, the electric strength decreases gradually, and the corona resistance life increases at first and then decreases. When the mass fraction of the nano organic silicon oxide is 15% of SiO2 equivalent, the corona resistance life of the hybrid PAI composite film at high temperature is 3.1 times longer than that of pure PAI film.

polyamide-imide  /  nano organic silicone oxide  /  dielectric properties  /  corona resistance
Li LIU, Keqiang WANG, Hao CHEN, Wei ZHAO, Yong FAN. Preparation and Dielectric Properties of Corona-resistant Nano-organosilicone Oxide Hybrid Polyamide-imide Composite Film[J]. Insulating Materials, 2021 , 54 (9) : 30 -35 . DOI: 10.16790/j.cnki.1009-9239.im.2021.09.004
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doi: 10.16790/j.cnki.1009-9239.im.2021.09.004
  • Receive Date：2020-10-14
  • Online Date：2026-03-20
  • Published：2021-09-20
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  • Received：2020-10-14
  • Revised：2020-11-16
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    School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, 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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