Effect of amino acid‐triazine copolymer on intumescent flame retardant ethylene‐vinyl acetate
Effect of amino acid‐triazine copolymer on intumescent flame retardant ethylene‐vinyl acetate
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DOI：
10.1002/app.52064
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发表时间：
2021-12
影响因子：
3
通讯作者：
Xinjun Wang;Lijun Qian;Juan Li
中科院分区：
文献类型：
--
作者：
Xinjun Wang;Lijun Qian;Juan Li
以赖氨酸（Lys）和三聚氯氰（CC）为原料，制备了氨基酸-三嗪共聚物（CC-Lys）。采用傅里叶变换红外光谱和热重分析对CC-Lys的结构和性能进行了表征。将CC‐Lys、聚磷酸铵（APP）和有机蒙脱土（OMMT）应用于乙烯-醋酸乙烯酯共聚物（伊娃）中，以提高其阻燃性能。结果表明，20重量%的APP/CC‐Lys/OMMT使伊娃达到UL‐94 V0等级。APP/CC-Lys/OMMT之间的反应释放出一些不可燃气体，并促进在燃烧过程中形成具有良好阻隔性能的多孔炭层。此外，提高了炭层的质量。此外，伊娃复合材料的热释放速率峰值降低了87%，点火时间延迟。本工作为伊娃提供了一个良好的阻燃体系。
Amino acid‐triazine copolymer (CC‐Lys) was prepared by using lysine (Lys) and cyanuric chloride (CC). The structure and performance of CC‐Lys were tested by using Fourier transform infrared spectroscopy and thermogravimetric analysis. The CC‐Lys, ammonium polyphosphate (APP) and organic montmorillonite (OMMT), were applied in ethylene‐vinyl acetate (EVA) to improve its flame retardancy. The results showed that 20 wt% APP/CC‐Lys/OMMT makes EVA achieve the UL‐94 V0 rating. The reactions among APP/CC‐Lys/OMMT release some incombustible gases and promote the formation of a porous char layer with good barrier performance during combustion. Moreover, the quality of the char layer is improved. In addition, the peak of heat release rate of EVA composite is reduced by 87% and time to ignition is delayed. This work provides a good flame retardant system for EVA.