A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability

Fenghua Zhao; Ruojin Liu; Xiaoyan Yu; Kimiyoshi Naito; Xiongwei Qu; Qingxin Zhang

doi:10.1002/app.42606

A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability

Fenghua Zhao, Ruojin Liu, Xiaoyan Yu, Kimiyoshi Naito, Xiongwei Qu, Qingxin Zhang

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

A phthalonitrile-substituted phosphonitrilic monomer has been synthesized from phosphonitrilic chloride trimer and then polymerized with addition of 4-(hydroxylphenoxy)phthalonitrile (HPPN). The chemical structures of the phosphonitrilic monomer and polymer were characterized by Fourier Transform Infrared spectroscopy (FT-IR) and proton Nuclear Magnetic Resonance spectroscopy (¹H NMR). Curing behaviors and thermal stabilities of the polymer were investigated through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Analysis showed that the monomer has large processing temperature window and good thermal stability. Apparent activation energy, initial curing temperature (T_i), curing temperature (T_p), and termination curing temperature (T_f) of the phosphonitrilic polymer were explored. Dynamic mechanical analysis (DMA), glass transition temperature (T_g) were studied, and limiting oxygen index (LOI) were estimated from the van Krevelen equation, which indicates the polymer process high modulus and good flame retardance. Micro-scale combustion calorimetry (MCC) was also used for evaluating the flammability of the polymers. Postcuring effects were explored, showing excellent thermal and mechanical properties with postcuring.

Original language	English
Article number	42606
Journal	Journal of Applied Polymer Science
Volume	132
Issue number	39
DOIs	https://doi.org/10.1002/app.42606
Publication status	Published - 2015 Oct 1
Externally published	Yes

Keywords

flame retardance
thermal properties
thermogravimetric analysis

ASJC Scopus subject areas

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.42606

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title = "A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability",

abstract = "A phthalonitrile-substituted phosphonitrilic monomer has been synthesized from phosphonitrilic chloride trimer and then polymerized with addition of 4-(hydroxylphenoxy)phthalonitrile (HPPN). The chemical structures of the phosphonitrilic monomer and polymer were characterized by Fourier Transform Infrared spectroscopy (FT-IR) and proton Nuclear Magnetic Resonance spectroscopy (1H NMR). Curing behaviors and thermal stabilities of the polymer were investigated through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Analysis showed that the monomer has large processing temperature window and good thermal stability. Apparent activation energy, initial curing temperature (Ti), curing temperature (Tp), and termination curing temperature (Tf) of the phosphonitrilic polymer were explored. Dynamic mechanical analysis (DMA), glass transition temperature (Tg) were studied, and limiting oxygen index (LOI) were estimated from the van Krevelen equation, which indicates the polymer process high modulus and good flame retardance. Micro-scale combustion calorimetry (MCC) was also used for evaluating the flammability of the polymers. Postcuring effects were explored, showing excellent thermal and mechanical properties with postcuring.",

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author = "Fenghua Zhao and Ruojin Liu and Xiaoyan Yu and Kimiyoshi Naito and Xiongwei Qu and Qingxin Zhang",

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T1 - A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability

AU - Zhao, Fenghua

AU - Liu, Ruojin

AU - Yu, Xiaoyan

AU - Naito, Kimiyoshi

AU - Qu, Xiongwei

AU - Zhang, Qingxin

PY - 2015/10/1

Y1 - 2015/10/1

N2 - A phthalonitrile-substituted phosphonitrilic monomer has been synthesized from phosphonitrilic chloride trimer and then polymerized with addition of 4-(hydroxylphenoxy)phthalonitrile (HPPN). The chemical structures of the phosphonitrilic monomer and polymer were characterized by Fourier Transform Infrared spectroscopy (FT-IR) and proton Nuclear Magnetic Resonance spectroscopy (1H NMR). Curing behaviors and thermal stabilities of the polymer were investigated through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Analysis showed that the monomer has large processing temperature window and good thermal stability. Apparent activation energy, initial curing temperature (Ti), curing temperature (Tp), and termination curing temperature (Tf) of the phosphonitrilic polymer were explored. Dynamic mechanical analysis (DMA), glass transition temperature (Tg) were studied, and limiting oxygen index (LOI) were estimated from the van Krevelen equation, which indicates the polymer process high modulus and good flame retardance. Micro-scale combustion calorimetry (MCC) was also used for evaluating the flammability of the polymers. Postcuring effects were explored, showing excellent thermal and mechanical properties with postcuring.

AB - A phthalonitrile-substituted phosphonitrilic monomer has been synthesized from phosphonitrilic chloride trimer and then polymerized with addition of 4-(hydroxylphenoxy)phthalonitrile (HPPN). The chemical structures of the phosphonitrilic monomer and polymer were characterized by Fourier Transform Infrared spectroscopy (FT-IR) and proton Nuclear Magnetic Resonance spectroscopy (1H NMR). Curing behaviors and thermal stabilities of the polymer were investigated through differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Analysis showed that the monomer has large processing temperature window and good thermal stability. Apparent activation energy, initial curing temperature (Ti), curing temperature (Tp), and termination curing temperature (Tf) of the phosphonitrilic polymer were explored. Dynamic mechanical analysis (DMA), glass transition temperature (Tg) were studied, and limiting oxygen index (LOI) were estimated from the van Krevelen equation, which indicates the polymer process high modulus and good flame retardance. Micro-scale combustion calorimetry (MCC) was also used for evaluating the flammability of the polymers. Postcuring effects were explored, showing excellent thermal and mechanical properties with postcuring.

KW - flame retardance

KW - thermal properties

KW - thermogravimetric analysis

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A high temperature polymer of phthalonitrile-substituted phosphazene with low melting point and good thermal stability

Abstract

Keywords

ASJC Scopus subject areas

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