节能泡的增强防火安全通过自切割CO2在燃烧前和在燃烧后释放
Fengyun Sun1, Lijun Wang2, Tiantian Gao2
1School of Mechanical Engineering, Chengdu University, Chengdu 610106, China.
Molecules (Basel, Switzerland)
|August 10, 2024
概括
盐和反应性阻燃剂 (DFD) 提高了刚性聚氨泡 (RPUF) 的消防安全性. 这种组合可以延迟点火,减少火焰的传播,但不影响RPUF.
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:
- 刚性聚氨泡 (RPUF) 提供出色的绝热和轻量特性,使其非常适合建筑和运输.
- RPUF固有的易燃性带来了重大消防安全风险,需要有效的阻燃剂策略.
- 在火灾期间确保足够的疏散时间需要延迟点火并抑制可燃材料中的火焰传播.
研究的目的:
- 调查盐和RPUF中的反应性阻燃剂 (DFD) 的阻燃效果.
- 探索这些添加剂对RPUF燃烧行为和阻燃机制的协同效应.
- 评估这些添加剂对RPUF的机械和热绝缘性能的影响.
主要方法:
- 使用盐催化RPUF的自我裂变,产生二氧化碳以减少氧气度和延迟点火.
- 加入一个反应性阻燃剂 (DFD) 释放氧激素,破坏燃烧链反应.
- 通过限制氧指数 (LOI),峰值热释放率 (PHRR) 和总热释放率 (THR) 的测量来分析火焰阻燃性.
主要成果:
- 盐促进了二氧化碳的产生,有效地延迟了点火.
- 综合系统显著增加了LOI,并减少了PHRR和THR,表明增强了阻燃性.
- RPUF的压力强度和绝热性能不受添加添加剂的影响.
结论:
- 盐和DFD的协同作用组合为RPUF提供了有效的阻燃策略.
- 这种方法通过延迟点火和抑制火焰传播来提高消防安全.
- 开发的阻燃RPUF保持了实际应用所需的机械和热性能.
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