Abstract In order to improve the flame retardancy and smoke suppression of epoxy resin (EP) simultaneously, we synthesized a melamine phenylhypophosphonate named as MABP via a simple one-step method and used it to modify EP materials. As expected, the addition of MABP not only largely improved the flame retardancy but also restrained the smoke release of EP. For details, when the content of MABP was 10 wt%, the EP composite possessed a limiting oxygen index value of 33% and achieved to a UL-94 V-0 rating as well as its PHRR, THR and TSP values decreased by 55.1%, 27.1% and 60% compared with that of neat EP, respectively. In addition, the flame-retardant mechanism was investigated by multiple instruments, and the corresponding results exhibited that the MABP could improve the compactness of char layer in condense phase and exerted fire-inhibition effect in gaseous phase. Graphic abstract

中文翻译：

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一种高效三聚氰胺盐反应型环氧树脂阻燃剂的简便一步合成

摘要 为了同时提高环氧树脂（EP）的阻燃性和抑烟性，我们通过简单的一步法合成了一种三聚氰胺苯基次膦酸酯，命名为MABP，并将其用于EP材料的改性。正如预期的那样，MABP 的加入不仅大大提高了阻燃性，而且还抑制了 EP 的烟雾释放。具体而言，当 MABP 的含量为 10 wt% 时，EP 复合材料的极限氧指数值为 33%，达到 UL-94 V-0 等级，PHRR、THR 和 TSP 值下降了 55.1% , 27.1% 和 60% 分别与纯 EP 相比。此外，通过多种仪器研究了阻燃机理，相应的结果表明，MABP可以提高凝相炭层的致密性，并在气相中发挥阻燃作用。图形摘要