功能化阻燃剂的气体和冷凝阶段效率用于棉织物:基与基组:基与基组
Raphael Otto1,2, Ava Cardona2, Alexander M Preußner2
1Institute of Physical Chemistry and Center for Nanointegration (CENIDE), University of Duisburg-Essen, Universitätsstraße 2, 45117 Essen, Germany.
Polymers
|April 12, 2025
概括
芳香酸衍生物增强了棉花的火焰阻燃性. 具有更酸性基基的基基化合物通过促进煤炭形成和减少挥发性排放,提供更高的性能.
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
- 织工程 织工程 织工程
背景情况:
- 棉织品易燃,需要有效的阻燃剂.
- 基于芳香的阻燃剂 (P-FRs) 提供了改善热稳定性和降低毒性的潜力.
- 了解P-FRs的结构性质关系对于优化阻燃剂的有效性至关重要.
研究的目的:
- 调查功能化芳香P-FRs,特别是基于和基的酸衍生物对棉花阻燃性的影响.
- 阐明芳香度和功能组组成 (,,酸) 在气相和凝相阻燃机制中的作用.
- 为了比较不同P-FR衍生物与 орто酸的疗效,作为参考.
主要方法:
- 棉织物经过各种基于和基的酸衍生物的处理,含量保持一致 (约3g/m2).
- 用气相和冷凝相分析评估阻燃效果,包括用于量测量的感应合等离子光学发射光谱学 (ICP-OES).
- 热分析 (热重力测量分析 - TGA) 和微尺度燃烧热量计 (MCC) 用于评估热分解行为和燃烧特征.
- 红外 (IR) 光谱法用于分析燃烧过程中演变的气体.
主要成果:
- 具有较多酸性基终结的P-FRs表现出优异的阻燃性能,主要是通过增强的炭形成.
- 基于氧的P-FR系统通过氧基的水解有效催化了棉花的分解,促进了脱水.
- 进化气体的IR分析表明,与衍生物不同,氧系统的挥发性排放量显著减少.
- 凝聚相机理,特别是焦炭形成,被确定为有效阻燃的关键.
结论:
- 功能化芳香P-FRs,特别是含有丰富的酸基基的基衍生物,显著提高了棉花的阻燃性.
- P-FRs的化学结构和功能组极大地影响其阻燃机制,影响气相和凝结相.
- 强大的冷凝相阻燃机制对于实现棉织品高性能至关重要.
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