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Preperation and Properties of Water-soluble Polyester Wire Enamel
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Hengguang ZHANG1, Hean LIAO1, Xiaorui ZHANG1, 2, 3, Jiangfeng NI2
Insulating Materials | 2021, 54(8) : 34 - 38
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Insulating Materials | 2021, 54(8): 34-38
• Material Research •
Preperation and Properties of Water-soluble Polyester Wire Enamel
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Hengguang ZHANG1, Hean LIAO1, Xiaorui ZHANG1, 2, 3, Jiangfeng NI2
Affiliations
  • 1Wuxi Toly Electric Works Co., Ltd., Wuxi 214196, China
  • 2Soochow University, Suzhou 215006, China
  • 3Harbin University of Science and Technology, Harbin 150040, China
Published: 2021-08-20 doi: 10.16790/j.cnki.1009-9239.im.2021.08.006
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A thermosetting polyester wire enamel with high crosslinking density was prepared by using water-soluble polyester resin as matrix. The adhesion of paint film was regulated by the ratio of hard and soft monomer in polyester resin, the electric strength of paint film was improved by adjusting the branching degree of polyester resin, and the technology of paint film was improved by adding thickening agent. The results show that when the mole fraction of water-soluble functional monomer is 6%, the mole fraction of branched functional monomer is 14%, and the mole ratio of soft and hard chain segments in the remaining monomer is 2∶1, the wire enamel with the water-soluble thermosensitive polyester as matrix has the best comprehensive performance. The optimum mass fraction of curing agent is 3.0% of resin mass. When the mass fraction of thickening agent is 0.4% of the total resin, the elongation at break of the enameled wire is 40%, and the electric strength is 40 kV/mm. The final coating thickness of the enameled wire is 100 μm, its breakdown voltage is 4 kV, and its heat resistance is good, which has potential application value in the new sensor technology and equipment body integrated transformer.

water soluble  /  wire enamel  /  adhesion  /  electric strength
Hengguang ZHANG, Hean LIAO, Xiaorui ZHANG, Jiangfeng NI. Preperation and Properties of Water-soluble Polyester Wire Enamel[J]. Insulating Materials, 2021 , 54 (8) : 34 -38 . DOI: 10.16790/j.cnki.1009-9239.im.2021.08.006
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doi: 10.16790/j.cnki.1009-9239.im.2021.08.006
  • Receive Date：2021-01-12
  • Online Date：2026-03-20
  • Published：2021-08-20
Article Data
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History
  • Received：2021-01-12
  • Revised：2021-02-18
Affiliations
    1Wuxi Toly Electric Works Co., Ltd., Wuxi 214196, China
    2Soochow University, Suzhou 215006, China
    3Harbin 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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