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Preparation and properties of semi-alicyclic polyimide films with low dielectric constant and low dielectric loss at high frequency
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Jian LU1, 2, Guoxiang ZOU1, Yongbing ZHUANG2, 3
Insulating Materials | 2023, 56(2) : 39 - 45
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Insulating Materials | 2023, 56(2): 39-45
• Polyimide Film Special Issue •
Preparation and properties of semi-alicyclic polyimide films with low dielectric constant and low dielectric loss at high frequency
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Jian LU1, 2, Guoxiang ZOU1, Yongbing ZHUANG2, 3
Affiliations
  • 1School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
  • 2State Key Laboratory of Biochemical Engineering, Institute of Process Engineering,Chinese Academy of Sciences, Beijing 100190, China
  • 3School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
Published: 2023-02-20 doi: 10.16790/j.cnki.1009-9239.im.2023.02.006
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Aimed at the application requirements of polyimide (PI) film materials in the field of high frequency, polyimides containing semi-alicyclic structure were synthesized by the semi-alicyclic diamine 5(6)-amino-1-(4-aminophenyl)-1,3,3-trimethylindan (DAPI) with different aromatic dianhydrides. And their corresponding films were prepared, the correlation between their structure and properties was explored. The results show that polyimides containing semi-alicyclic structure have good solubility and processability, they are soluble in conventional organic solvents such as NMP, DMF, CHC13, etc. The corresponding films had good mechanical and thermal properties, their tensile strength ranges from 64.8 MPa to 82.6 MPa, and their glass transition temperature can exceed 487℃. The dielectric constant (Dk) of the PI films is 2.63-4.62 at 1 kHz-1 MHz and 2.46-2.75 at 10 GHz, respectively. The dissipation factor (Df) is 0.003 1-0.020 5 at 1 kHz-1 MHz and 0.006 6-0.017 4 at 10 GHz, respectively. In particular, the Dk and Df of the B-PI(BPADA-DAPI) film at 10 GHz is 2.75 and 0.006 6, respectively. It is indicated that the polyimide films with low dielectric constant and low dielectric loss at high frequency can be obtained by the introduction of semi-alicyclic moieties and bisphenol A groups into the main chains.

polyimides  /  films  /  high frequency  /  dielectric constant  /  dielectric loss
Jian LU, Guoxiang ZOU, Yongbing ZHUANG. Preparation and properties of semi-alicyclic polyimide films with low dielectric constant and low dielectric loss at high frequency[J]. Insulating Materials, 2023 , 56 (2) : 39 -45 . DOI: 10.16790/j.cnki.1009-9239.im.2023.02.006
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.02.006
  • Receive Date：2022-01-19
  • Online Date：2025-11-21
  • Published：2023-02-20
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  • Received：2022-01-19
  • Revised：2022-02-17
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Affiliations
    1School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
    2State Key Laboratory of Biochemical Engineering, Institute of Process Engineering,Chinese Academy of Sciences, Beijing 100190, China
    3School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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表12种不同金属材料的力学参数
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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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