含有P和N的生物质阻燃聚氨泡的热和燃烧性能
Jing Zhan1, Liangchen Mao1, Rongshui Qin1
1School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China.
Materials (Basel, Switzerland)
|July 27, 2024
概括
氨基化纤维素 (PNC) 增强了聚氨泡.
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:
- 来自生物质的材料具有环保,可持续和低毒性的特性.
- 聚氨 (PU) 泡被广泛使用,但需要提高阻燃性.
- 传统的阻燃剂往往会引起环境和健康问题.
研究的目的:
- 合成氨基化纤维素 (PNC) 作为一种新的生物质阻燃剂.
- 将PNC纳入刚性聚氨泡 (PU) 中,以创建阻燃复合材料.
- 评估PU/PNC复合材料的阻燃性能和热降解行为.
主要方法:
- 通过纤维素化合成PNC.
- 制备不同PNC含量的PU/PNC复合材料.
- 燃烧试验:限制氧气指数 (LOI),UL-94,圆热量计 (CCT).
- 热分析:热重力测量分析 (TGA),热重力测量红外光谱 (TG-IR).
- 电荷残留分析:扫描电子显微镜 (SEM),拉曼光谱,X射线光电子光谱 (XPS).
主要成果:
- PNC显著提高了PU的阻燃性.
- 含有15%重量的PNC的PU/PNC复合材料获得了V-0等级和23.5%的LOI.
- 与纯 PU 相比,碳炭产量增加了 181% ,总热释放量 (THR) 减少了 56.3% .
- 拉曼分析表明,炭层稳定性得到改善 (ID/IG比率下降).
- TG-IR证实了氧气和可燃气体通过PNC释放惰性气体而稀释.
结论:
- 氨基化纤维素是聚氨的有效生物质阻燃剂.
- PU/PNC复合材料表现出优越的消防安全性和热稳定性.
- 开发的材料为建筑,运输和电子行业的耐火应用提供了可持续和环保的替代方案.
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