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N-substituted Poly(benzimidazole-imide) Films: Improved Solubility and Transmittance
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Zhao KE, Haiquan CHEN, Yicai ZHANG, Xiaoying YAN, Hui LI, Guangtao QIAN, Youhai YU
Insulating Materials | 2021, 54(11) : 55 - 61
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Insulating Materials | 2021, 54(11): 55-61
• Polyimide Film Special Issue •
N-substituted Poly(benzimidazole-imide) Films: Improved Solubility and Transmittance
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Zhao KE, Haiquan CHEN, Yicai ZHANG, Xiaoying YAN, Hui LI, Guangtao QIAN, Youhai YU
Affiliations
  • Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
Published: 2021-11-22 doi: 10.16790/j.cnki.1009-9239.im.2021.11.007
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Two novel diamines contained N-phenyl substituted benzimidazole were synthesized, and their difference was that the ortho-position of N-phenyl was substituted by methyl and fluorine atom, respectively. The novel diamines and commercially available dianhydrides 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) and 4,4′-oxydiphthalic anhydride (ODPA) were used to prepare poly(benzimidazole-imide) (PBII) films by two-step thermal imidization. The properties of new diamine monomer and PBII films were tested and characterized. The results show that the PBII films exhibit good thermal properties (glass transition temperature Tg=341-381℃) and mechanical properties (σ=95-135 MPa). The N-phenyl groups with different ortho units destroy the effective molecular packing, which improves the solubility and optical transmittance of the PBII films.

poly(benzimidazole-imide)  /  heat resistance  /  optical transmittance
Zhao KE, Haiquan CHEN, Yicai ZHANG, Xiaoying YAN, Hui LI, Guangtao QIAN, Youhai YU. N-substituted Poly(benzimidazole-imide) Films: Improved Solubility and Transmittance[J]. Insulating Materials, 2021 , 54 (11) : 55 -61 . DOI: 10.16790/j.cnki.1009-9239.im.2021.11.007
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.11.007
  • Receive Date：2021-04-25
  • Online Date：2026-03-23
  • Published：2021-11-22
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  • Received：2021-04-25
  • Revised：2021-05-26
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    Center for Advanced Low-Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, 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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