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Investigation of a combination of novel polyphosphoramide and boron-containing compounds on the thermal and flame-retardant properties of polystyrene

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Abstract

A novel phosphorus, nitrogen-containing compound, poly(4, 4′-diaminodiphenyl methane phenyl dichlorophosphate) (PDMPD) with high thermal stability was synthesized. The PDMPD was then incorporated into polystyrene (PS) to be used as halogen-free flame retardant. Moreover, small amounts of two boron-containing compounds, Zinc borate (ZnB) and boron phosphate (BP) were combined with PDMPD,to explore effective flame-retardant formulations for PS. The flammability and the thermal properties of the composites were evaluated using limiting oxygen index (LOI) test, microscale combustion calorimeter (MCC) and thermogravimetric analysis (TGA) respectively. A Fourier transform infrared (FTIR) spectroscopy coupled with a thermogravimetric analyzer (TG-IR) was also used to study the gas phase from the degradation of PS composites. Furthermore, the char residues of the samples were investigated by scanning electron microscopy (SEM) and FTIR. The results showed that the incorporation of PDMPD can significantly decrease the flammability of virgin PS, and enhance the thermal stability at high temperature region, in both nitrogen and air atmosphere. A combination of PDMPD with small amounts of boron compounds can further decrease the flammability.

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Acknowledgements

Financial supports by the joint fund of NSFC and Guangdong Province (No. U1074001), National Basic Research Program of China (973 Program) (2012CB719701) and Specialized Research Fund for the Doctoral Program of Higher Education (20103402110006) are grateful acknowledged.

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Authors and Affiliations

  1. State Key Laboratory of Fire Science, University of Science and Technology of China and USTC-CityU Joint Advanced Research Centre, Suzhou, People’s Republic of China

    Qilong Tai, Lei Song & Yuan Hu

  2. Department of Civil and Architectural Engineering, City University of Hong Kong, Kowloon, Hong Kong

    Qilong Tai & Richard K. K. Yuen

  3. USTC-CityU Joint Advanced Research Centre, Suzhou, People’s Republic of China

    Qilong Tai & Richard K. K. Yuen

  4. Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute of University of Science and Technology of China, Suzhou, People’s Republic of China

    Yuan Hu

  5. State Key Laboratory of Environmental Adaptability for Industrial Products, China National Electric Apparatus Research Institute, Guangzhou, 510300, People’s Republic of China

    Hao Feng & Youji Tao

Authors
  1. Qilong Tai
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  2. Lei Song
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  3. Hao Feng
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  4. Youji Tao
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  5. Richard K. K. Yuen
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  6. Yuan Hu
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Corresponding authors

Correspondence to Richard K. K. Yuen or Yuan Hu.

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Tai, Q., Song, L., Feng, H. et al. Investigation of a combination of novel polyphosphoramide and boron-containing compounds on the thermal and flame-retardant properties of polystyrene. J Polym Res 19, 9763 (2012). https://doi.org/10.1007/s10965-011-9763-7

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  • DOI: https://doi.org/10.1007/s10965-011-9763-7

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