A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability
作者： Fenghua Zhao , Ruojin Liu , Xiaoyan Yu , Kimiyoshi Naito , Xiongwei Qu
DOI: 10.1002/APP.42606
关键词:
摘要: A phthalonitrile-substituted phosphonitrilic monomer has been synthesized from chloride trimer and then polymerized with addition of 4-(hydroxylphenoxy)phthalonitrile (HPPN). The chemical structures the polymer were characterized by Fourier Transform Infrared spectroscopy (FT-IR) proton Nuclear Magnetic Resonance (1H NMR). Curing behaviors thermal stabilities investigated through differential scanning calorimetry (DSC) thermogravimetric analysis (TGA). Analysis showed that large processing temperature window good stability. Apparent activation energy, initial curing (Ti), (Tp), termination (Tf) explored. Dynamic mechanical (DMA), glass transition (Tg) studied, limiting oxygen index (LOI) estimated van Krevelen equation, which indicates process high modulus flame retardance. Micro-scale combustion (MCC) was also used for evaluating flammability polymers. Postcuring effects explored, showing excellent properties postcuring. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42606.
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