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Study on preparation and properties of polyimide films based on xanthene-based and fluoro-containing dianhydride monomer
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Zhenzhong WANG1, Zhibin HE2, Xi REN1, Changxu YANG1, Shujun HAN1, Yuexin QI1, Haifeng YU2, Jingang LIU1
Insulating Materials | 2024, 57(10) : 42 - 52
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Insulating Materials | 2024, 57(10): 42-52
• Special Issue on High Performance Polyimide Materials •
Study on preparation and properties of polyimide films based on xanthene-based and fluoro-containing dianhydride monomer
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Zhenzhong WANG1, Zhibin HE2, Xi REN1, Changxu YANG1, Shujun HAN1, Yuexin QI1, Haifeng YU2, Jingang LIU1
Affiliations
  • 1Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
  • 2Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Material Science and Engineering, Peking University, Beijing 100871, China
Published: 2024-10-20 doi: 10.16790/j.cnki.1009-9239.im.2024.10.006
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Three fluoro-containing polyimide (PI) resins (PI-IIa, PI-IIb, and PI-IIc) were prepared by two-step chemical imidization procedure using a fluoro-containing dianhydride 9,9-bis(trifluoromethyl)xanthene-2,3,6,7-tetracarboxylic dianhydride (6FCDA, II) and three kinds of aromatic diamines, including 2,2ʹ-bis(trifluoromethyl)-4,4ʹ-diaminodiphenylether (6FODA, a), 1,4-bis[(4-amino-2-trifluoromethyl)phenoxy]benzene (6FAPB, b) and 2,2-bis[(4-aminophenoxy) benzene]propane (BAPP, c), respectively. For comparison, the referenced PI resins (PI-Ia, PI-Ib, and PI-Ic) were prepared with the same procedure except that 6FCDA was replaced by 4,4ʹ-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). And then six kinds of PI films were prepared by high temperature curing process, and their properties were studied. The results show that the solubility of PI-IIa, PI-IIb, and PI-IIc resins in organic solvents is lower than that of PI-Ia, PI-Ib, and PI-Ic resins. Compared with PI-Ia, PI-Ib, and PI-Ic films, PI-IIa, PI-IIb, and PI-IIc films show higher glass transition temperature (Tg), lower linear coefficient of thermal expansion (CTE), little lower optical transparency, and relatively higher dielectric constant (Dk). The PI-IIa film has the optimal comprehensive properties, its Tg and CTE is 362.5℃ and 39.6×10-6 K-1, respectively, its optical transmittances at the wavelength of 450 nm (T450) is 83.9%, and the Dk at the frequency of 10 GHz is 3.00.

polyimide  /  trifluoromethyl  /  xanthene  /  optical properties  /  thermal properties
Zhenzhong WANG, Zhibin HE, Xi REN, Changxu YANG, Shujun HAN, Yuexin QI, Haifeng YU, Jingang LIU. Study on preparation and properties of polyimide films based on xanthene-based and fluoro-containing dianhydride monomer[J]. Insulating Materials, 2024 , 57 (10) : 42 -52 . DOI: 10.16790/j.cnki.1009-9239.im.2024.10.006
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2024.10.006
  • Receive Date：2024-04-25
  • Online Date：2025-12-24
  • Published：2024-10-20
Article Data
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History
  • Received：2024-04-25
  • Revised：2024-05-13
Funding
Affiliations
    1Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
    2Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Material Science and Engineering, Peking University, Beijing 100871, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.10.006
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表12种不同金属材料的力学参数
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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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