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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of a phosphorus- and nitrogen-containing flame retardant and evaluation of its application in waterborne polyurethane
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Synthesis of a phosphorus- and nitrogen-containing flame retardant and evaluation of its application in waterborne polyurethane

机译：含磷和含氮阻燃剂的合成及其在水性聚氨酯中的应用评价

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摘要

A phosphorus- and nitrogen-containing intumescent flame retardant, pentaerythritol di-N-hydroxyethyl phosphamide (PDNP), was synthesized with phosphorus oxychloride, pentaerythritol, and ethanolamine as raw materials. Using the prepared PDNP as a chain extender, a series of flame-retardant waterborne polyurethanes (WPU) were prepared, and their structures were characterized using NMR and Fourier transform infrared spectroscopy (FTIR). Additionally, the thermal properties and flame retardancy of WPU films were investigated by thermogravimetric analysis, limiting oxygen index (LOI) tests, cone calorimeter tests, and thermogravimetry-FTIR. These results indicated that PDNP materials exhibit good char-forming ability at high temperature and that PDNP-modified waterborne polyurethane obtained an LOI value of 26.0% for a PDNP content of 9 wt %. Finally, the morphology and the element distributions of char residues of WPU were analyzed by scanning electron microscopy and energy dispersive spectrometry after combustion. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46093.
机译：用磷酸氯化磷，季戊四醇和乙醇胺作为原料合成含磷和含氮型膨胀型阻燃剂，季戊四醇二甲基亚甲基磷酰胺（PDNP）。使用制备的PDNP作为链增量剂，制备一系列阻燃水性聚氨酯（WPU），其结构用NMR和傅立叶变换红外光谱（FTIR）表征。另外，通过热重分析研究了WPU膜的热性质和阻燃性，限制了氧指数（LOI）试验，锥形量热计测试和热升降机-FTIR。这些结果表明，PDNP材料在高温下表现出良好的炭化能力，并且PDNP改性的水性聚氨酯得到的LOI值为26.0％，对于9wt％的PDNP含量为26.0％。最后，通过扫描电子显微镜和燃烧后的能量分散光谱分析WPU的形态和元素分布。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46093。

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