Synthesis and properties of a novel high temperature pyridine‐containing phthalonitrile polymer |
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| Authors: | Zhenjie Xi Xinggang Chen Xiaoyan Yu Yuanhui Ma Puguang Ji Kimiyoshi Naito Huili Ding Xiongwei Qu Qingxin Zhang |
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| Institution: | 1. Institute of Polymer Science and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, China;2. Key Lab for Micro‐ and Nano‐scale Boron Nitride Materials in Hebei Province, Hebei University of Technology, Tianjin, China;3. Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin, China;4. National Institute for Materials Science (NIMS), Tsukuba, Japan |
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| Abstract: | A novel pyridine‐containing aromatic phthalonitrile monomer, 2,6‐bis4‐(3,4‐dicyanophenoxy)benzoyl]pyridine (BCBP) was synthesized from the nitro displacement of 4‐nitrophthalonitrile by the phenoxide of 2,6‐bis (4‐hydroxybenzoyl)pyridine (BHBP). 4‐(Aminophenoxy) phthalonitrile (APPH) was selected to promote the curing reaction, and the curing behavior has been investigated by differential scanning calorimetric (DSC), suggesting a wide processing window about 64 °C. Different curing additive concentrations resulted in polymers with different crosslinking degrees and subsequently influenced the performance of resins. The resulting BCBP polymer exhibited high glass transition temperatures exceeding 400 °C, outstanding thermo‐oxidative stability with weight retention of 95% at 530 °C, indicating a significant improvement in thermal properties endowed by pyridine units. Additionally, it also showed a lower overall water absorption after submersion in boiling water for 50 hours. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54, 3819–3825 |
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| Keywords: | thermosets high performance polymers thermal properties |
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