化环氧树脂含量对内溶性防火涂料的热物理和机械性能的影响
Vladimir Kukushkin1, Vyacheslav Subbotin1, Nikolay Yashin1
1Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
Polymers
|February 27, 2026
概括
将化环氧树脂添加到阴暗涂层中可以提高自灭特性,但可以降低防火性能. 通过10-50%的树脂含量实现最佳性能,平衡安全性和有效性.
科学领域:
- 材料科学 材料科学 材料科学
- 消防安全工程 消防安全工程
- 聚合物化学 聚合物化学
背景情况:
- 内溶性防火涂层通过使用环氧粘合剂来提高钢结构的安全性.
- 环氧结合剂的热氧化降解可能会损害耐火性.
- 化环氧树脂正在探索修改阴暗涂层性能.
研究的目的:
- 为了研究化环氧树脂含量对化涂层阻燃行为的影响.
- 评估自灭特性和防火效率之间的权衡.
- 为了确定最佳的树脂水平,以达到平衡的性能.
主要方法:
- 测试了两种阴暗涂层系统:一种是可燃的,一种是自灭的.
- 化环氧树脂含量在替代环氧二树脂时有所变化.
- 使用UL-94和BS 476标准评估了阻燃性能.
- 热降解,煤炭形态和化学变化通过热分析,FTIR和SEM进行分析.
主要成果:
- 在可燃涂料中的部分替代 (12.5%) 实现了自灭行为 (UL-94).
- 在可燃涂料中,更高的替代率 (≥50%) 降低了20-28%的防火保护 (BS 476).
- 不易燃涂料的性能下降了15-20%,不论其含有多少树脂.
- 树脂降低了~80°C的热降解开始,并改变了碳结构,减少了绝缘.
结论:
- 化环氧树脂具有双重效应:增强自灭能力,但减少长期的防火保护.
- 化树脂含量为10-50%,为化涂层提供了一个实际的妥协.
- 这种范围使其具有自灭性能,同时保持可接受的防火功效.
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