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Synthesis of a novel flame retardant based on DOPO derivatives and its application in waterborne polyurethane

机译：基于DOPO衍生物的新型阻燃剂的合成及其在水性聚氨酯中的应用

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摘要

An intumescent flame retardant (DOPO-DAM) containing phosphorus and nitrogen was synthesized via a two-step process and then, it was incorporated into waterborne polyurethane to serve as a reactive flame retardant for preparing flame-retarded WPU (FR-WPU). The chemical structures of DOPO-DAM and FR-WPU were confirmed by H-1 NMR, P-31 NMR, and FTIR studies. The thermal stability, flame retardancy and mechanical properties of FR-WPU were investigated by TGA, TGA-FIR, Py-GC-MS, limiting oxygen index (LOI) test, SEM-EDS analysis, cone calorimeter test and a universal testing machine. The results showed that the conjugation of DOPO-DAM into WPU induced a slight decline in the thermal stability of FR-WPU. However, the incorporation of DOPO-DAM into WPU significantly enhanced the flame retardancy by reducing the heat release rate (HRR), total heat release (THR), smoke production rate (SPR) and total smoke production (TSP). In addition, the morphology, elemental composition and content of the residual char of the flame-retarded WPU indicated the important function of DOPO-DAM in the condensed phase. Thus, DOPO-DAM exhibited gas-phase and condensed-phase flame retardant effects on the WPU films.
机译：通过两步法合成含磷和氮气的膨胀阻燃剂（DoPO-DAM），然后将其掺入水性聚氨酯中以用作制备阻燃WPU（FR-WPU）的反应性阻燃剂。通过H-1 NMR，P-31 NMR和FTIR研究证实了DOPO-DAM和FR-WPU的化学结构。通过TGA，TGA-FIR，PY-GC-MS，限制氧指数（LOI）测试，SEMEDS分析，锥形量热计测试和通用试验机来研究FR-WPU的热稳定性，阻燃性和机械性能。结果表明，多多坝进入WPU的缀合诱导FR-WPU热稳定性的轻微下降。然而，将DoPO-DAM掺入WPU通过降低热释放速率（HRR），总热释放（THR），烟雾生产率（SPR）和总烟雾生产（TSP）而显着增强了阻燃性。此外，阻燃WPU残余炭的形态，元素组成和含量表明了多奥多瓦在冷凝相中的重要功能。因此，DOPO-DAM表现出对WPU薄膜的气相和冷凝相阻燃剂效应。

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  • 来源
    《RSC Advances》 |2019年第13期|共9页
  • 作者

    Wang Hui; Wang Shuang; Du Xiaosheng; Wang Haibo; Cheng Xu; Du Zongliang;

  • 作者单位

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Text Inst Coll Light Ind Text &

    Food Engn Chengdu 610065 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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