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Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (12): 2494.

• Articles • Previous Articles     Next Articles

Synthesis and Characterization of Reticulated Structure Ammonium Polyphosphate with Crystal Form V

CHEN Wen-Yan, LIU Xin-Chun, LIU Gou-Sheng*, YU Jian-Guo   

  1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2010-02-03 Revised:2010-06-07 Online:2010-12-10 Published:2010-12-06
  • Contact: Gou-Sheng LIU E-mail:gsliu@ecust.edu.cn
  • About author:刘够生, 男, 博士, 教授, 主要从事材料化学工程中的理论与实验研究.
  • Supported by:

    National Science and Technology Supporting Program;West Region Plan Project in Science and Technology Commission of Shanghai Municipality

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Abstract: Ammonium polyphosphate (APP) with reticulated structure was prepared by heating a mixture of 85% food grade phosphoric acid and melamine under wet ammonia atmosphere. Its water-solubility, XRD, 13C NMR, FTIR and TG were investigated, and compared with those of APP-I and APP-II. Results show that this product has excellent water-resistence, its XRD spectrum is similar to that of APP-V in literature, its 13C NMR and FTIR spectra show that this product is a cross-linked and reticulated structure of ammonium polyphosphate chains with triazine ring as basebone. TG tests show that the residual weight at 700℃ for this product is 53.6% , higher than 40.29% for APP-I and 36.18% for APP-II, meaning its excellent thermal stability at high temperature.

Key words: Ammonium polyphosphate, crystal form V, Water resistance, Thermal stability.

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