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Haoyang Zhang^1,2, Jiyu He^1,2, Xiangmei Li^1,2

¹School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

|June 13, 2025

概括

一种新型的阻燃剂,DT,来自9,10-二-9--10-酸烯10氧化物 (DOPO),显著增强了聚胺66 (PA66) 的阻燃性. 15% DT 的材料获得了 UL-94 V-0 评级,并提高了热稳定性.

科学领域:

聚合物科学聚合物科学
材料化学材料化学
阻燃性是指阻燃性是指阻燃性.

背景情况:

聚胺66 (PA66) 是一种多用途的工程塑料,具有有限的可燃性.
在各种应用中,PA66固有的易燃性引发了安全问题.
开发有效的阻燃剂对于提高PA66的安全性和性能至关重要.

研究的目的:

为了合成和表征一种新的DOPO衍生阻燃剂,DT.
评估DT在PA66复合材料中的阻燃效果.
研究DT对PA66.6的热,结晶和机械性能的影响.

主要方法:

一个含有P/N的DOPO衍生品 (DT) 的合成.
使用里埃变换红外光谱 (FTIR) 和核磁共振 (NMR) 进行结构性表征.
通过双螺丝挤出制备PA66/DT复合材料.
评估热稳定性,结晶性,阻燃性 (UL-94,LOI) 和机械性能.
使用圆热量计分析燃烧行为.

主要成果:

合成的DT在结构上得到了确认.
15% DT 的 PA66 复合材料获得了 UL-94 V-0 评级,并将限制性氧指数 (LOI) 提高到 27.2%.
圆热量计显示,峰值热释放率 (PHRR) 和总热释放率 (THR) 显著降低,伴随着炭层的形成和燃烧气体成分的改变 (NH3增加,C-H减少).

结论:

DT阻燃剂有效地提高了PA66.6的阻燃性.
通过炭形成和燃烧途径的修改,DT增强了PA66的特性.
这种DOPO衍生品为开发更安全,阻燃PA66材料提供了有前途的解决方案.

关键词:

在这里,DOPO DOPO DOPO.在PA6666中使用.阻燃剂是一种阻燃剂.

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