修改过的环氧树脂对阿拉米德纤维复合材料的燃烧行为和机械性能
Xuke Lan1,2, Chenxi Bian1,2, Yunxian Yang1,2,3,4
1National Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China.
Materials (Basel, Switzerland)
|August 29, 2024
概括
新的阻燃修饰剂 (EAD) 被添加到阿拉米德纤维/环氧树脂 (AF/EP) 复合材料中,显著提高了耐火性和增强了拉伸强度和弹道保护等机械性能. 这项创新解决了火灾风险,而不影响性能.
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
- 消防安全工程 消防安全工程
背景情况:
- 阿拉米德纤维/环氧树脂 (AF/EP) 复合材料提供出色的机械性能和轻量优势,用于冲击保护.
- 然而,环氧树脂矩阵的易燃性和阿拉米德纤维的效应在苛刻的应用中构成火灾风险.
研究的目的:
- 为了提高AF/EP复合材料的阻燃性.
- 为了研究多功能阻燃修饰器 (EAD) 对复合材料的火灾行为和机械性能的影响.
- 了解阻燃机制和界面相互作用.
主要方法:
- 在不同度下将EAD纳入AF/EP系统.
- 使用限制氧气指数 (LOI),热释放和烟雾释放测试来评估阻燃性.
- 通过热重力学分析 (TGA) 评估热稳定性,使用动态机械分析 (DMA) 评估机械性能.
- 微结构分析以了解接口粘合和故障模式.
主要成果:
- 添加5%重量的EAD导致37.5%的高LOI,自灭,并减少了热量/烟雾释放.
- 被处理的复合材料保持了良好的热稳定性.
- 改进的界面粘合导致增强的拉伸强度 (17%的增加) 和弹性参数 (10%的增加) 与柔性故障模式.
- 在凝结和气相中都确定了有效的阻燃机制.
结论:
- 多功能阻燃修饰器 (EAD) 有效地提高了AF/EP复合材料的阻燃性.
- 电子阻燃器提高了机械性能和热稳定性,解决了阻燃性和性能之间的权衡.
- 经过修改的AF/EP复合材料显示出在保护领域的扩大应用潜力.
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