基于环氧寡合体和现场合成的含微粒的低易燃混合聚合物材料
Sergey Vladimirovich Borisov1, Boris Andreevich Buravov1, Daria Andreevna Kudryavtseva1
1Faculty of Chemical Technology, Volgograd Technical State University, 400005 Volgograd, Russia.
Polymers
|December 31, 2025
概括
在现场形成的混合环氧复合材料与硫酸和正酸的开发显著提高了消防安全. 这种新的方法提高了煤炭残留量,同时减少了先进材料中释放的热量和烟雾.
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:
- 环氧复合材料中传统的分散阻燃剂存在异构性,机械强度降低和填料透性差.
- 开发先进的防火材料对于提高各种应用中的结构完整性和安全性至关重要.
- 在复合材料中广泛使用的环氧树脂需要有效的阻燃策略来减轻可燃性风险.
研究的目的:
- 开发新的在现场形成的混合环氧复合材料,增强耐火性.
- 调查现场颗粒形成对环氧复合材料性能的影响.
- 为了克服聚合物矩阵中的传统阻燃系统的局限性.
主要方法:
- 修改双甲和三乙烯胺环氧系统的二甲基乙烯乙烯以硫酸盐肝酸水化合物在酸中.
- 在聚合物矩阵内在现场形成近球形微粒 (6-16μm).
- 使用扫描电子显微镜 (SEM),能量分散式X射线光谱 (EDX) 和里埃变换红外光谱 (FTIR) 的表征.
主要成果:
- 显著提高修改过的环氧复合材料的耐火性能.
- 与未经修改的环氧化物相比,碳残留量增加了1.7-2.2倍.
- 减少总热释放 (高达60.5%),最大热释放率 (高达40.2%) 和烟雾释放 (高达70%).
结论:
- 在现场形成策略有效地创造了具有改进性能的防火环氧复合材料.
- 加快的热氧化降解,体现在增加的质量损失率,促进了增强的炭形成.
- 这种方法为开发高性能,耐火的环氧材料提供了一个有前途的方法,用于苛刻的应用.
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