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Preparation and performance of fluorinated polythioetherimide with low dielectric constant
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Xiaoling CHEN1, Jingyi WANG1, Zhiwen WANG1, Huaxin WANG1, Kai LIU2, Xin LU3
Insulating Materials | 2024, 57(10) : 78 - 83
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Insulating Materials | 2024, 57(10): 78-83
• Special Issue on High Performance Polyimide Materials •
Preparation and performance of fluorinated polythioetherimide with low dielectric constant
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Xiaoling CHEN1, Jingyi WANG1, Zhiwen WANG1, Huaxin WANG1, Kai LIU2, Xin LU3
Affiliations
  • 1College of New Materials and Shoes & Clothing Engineering, Liming Vocational University, Quanzhou 362000, China
  • 2Fujian Xufeng New Material Technology Co., Ltd., Quanzhou 362000, China
  • 3Fujian Key Laboratory of Rubber and Plastic New Materials, Quanzhou 362000, China
Published: 2024-10-20 doi: 10.16790/j.cnki.1009-9239.im.2024.10.010
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A series of fluorinated polythioetherimide films were synthesized by copolymerization using 4,4′-diaminodiphenyl sulfide (SDA) and 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (HFBAPP) as diamine monomers, and 4,4′-biphenylene ether dianhydride (ODPA) as dianhydride monomer. The thermal, electrical, optical properties, and water absorption of the PI films were tested. The results show that the PI films have good thermal, dielectric properties and optical transparency. The glass transition temperature of the film is in the range of 240.7-251.6℃, the 5% and 10% heat loss temperature is above 480℃ and 514℃, respectively, and the residual carbon rate reaches 50% at 800℃. Under the frequency of 1 MHz, the dielectric constant of the PI films are 2.27-2.99, the dielectric loss factors are 0.004 7-0.005 6. The highest transmittance of the films reaches 88.75% in the range of visible light, and the water absorption rate is 0.95%-2.26%.

polyimide  /  sulfur ether group  /  trifluoromethyl  /  dielectric constant
Xiaoling CHEN, Jingyi WANG, Zhiwen WANG, Huaxin WANG, Kai LIU, Xin LU. Preparation and performance of fluorinated polythioetherimide with low dielectric constant[J]. Insulating Materials, 2024 , 57 (10) : 78 -83 . DOI: 10.16790/j.cnki.1009-9239.im.2024.10.010
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doi: 10.16790/j.cnki.1009-9239.im.2024.10.010
  • Receive Date：2024-07-29
  • Online Date：2025-12-24
  • Published：2024-10-20
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  • Received：2024-07-29
  • Revised：2024-09-03
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Affiliations
    1College of New Materials and Shoes & Clothing Engineering, Liming Vocational University, Quanzhou 362000, China
    2Fujian Xufeng New Material Technology Co., Ltd., Quanzhou 362000, China
    3Fujian Key Laboratory of Rubber and Plastic New Materials, Quanzhou 362000, 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
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Genus		 种数
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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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