层层的双氧化物纳米复合材料涂层,以提高聚乙烯基共聚物质的阻燃性
Giuseppe Trapani1, Rossella Arrigo1, Michele Sisani2
1Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy.
Polymers
|December 11, 2025
概括
一种新的涂层方法提高了以乙烯-乙酸乙烯 (EVA) 和以乙烯-丁烯酸 (EBA) 共聚合物的阻燃性,使用分层双氧化物 (LDH). 这种方法有效地延迟了点火,并且添加了最小的纳米填充剂.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 消防安全工程 消防安全工程
背景情况:
- 乙烯-乙酸乙烯 (EVA) 和乙烯-丁烯酸盐 (EBA) 共聚合物是广泛使用的聚合物.
- 提高这些共聚物质的阻燃性对于安全应用至关重要.
- 传统的阻燃方法可能会影响材料性能,需要大量的添加剂.
研究的目的:
- 开发一种有效的涂层方法,使EVA和EBA共聚合物具有阻燃性.
- 为了研究层状双氧化物 (LDHs) 作为涂层中的纳米填充剂的影响.
- 为了评估涂层共聚合物系统的燃烧行为和点火延迟.
主要方法:
- 使用两种类型的LDH进行造挤出,制备EVA和EBA纳米复合材料薄膜.
- 这些纳米复合材料薄膜的应用作为涂层在整洁的共聚合物基板上.
- 使用圆热量计测试评估燃烧行为.
主要成果:
- 涂层方法显著改善了EVA和EBA共聚合物的点火时间,即使纳米填充剂含量低 (0.5%).
- 与基于EBA的系统相比,基于EVA的系统 (30%的点火延迟增加) 的阻燃效果更为明显 (12%的增加).
- 热释放率曲线和峰值基本没有受到影响,这表明对整体燃烧特性的影响很小.
结论:
- 建议的涂层策略是提高EVA和EBA共聚物的阻燃性的一种有效方法.
- 将阻燃剂集中在表面将添加剂的使用量降至最低,同时最大限度地提高效率.
- 在EVA系统中性能的提高归因于LDHs的更均的分散.
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