HTPFA涂层AlB2具有增强的燃烧性能作为高能燃料的燃料
Jiangfeng Wang1, Wanjun Zhao1, Chen Shen1
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
使用一种新的涂层方法开发了高反应性二化物 (AlB2) 复合材料. 这些AlB2@hydroxyl-terminated perfluoropolyether alcohol (AlB2@HTPFA) 复合材料显示了对能量材料的燃烧效率和反应能力的提高.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 能量材料 能量材料
背景情况:
- 二化物 (AlB2) 是一种高能耗燃料,在固体推进剂中具有潜力.
- 由于AlB2的低反应性,使其在高能材料中的应用受到限制.
- 核心外结构复合材料可以提高燃料性能.
研究的目的:
- 合成高反应性AlB2@基终结型完全聚乙醇 (AlB2@HTPFA) 复合物.
- 研究聚合物涂层对AlB2的反应性和燃烧特性的影响.
- 了解AlB2@HTPFA复合材料的点火和燃烧增强机制.
主要方法:
- 简单的一步现场聚合方法,用功能化的聚合物涂覆AlB2.
- 制备AlB2@HTPFA复合材料的不同聚合物含量 (0,5,10,15%重量).
- 形态和结构的表征.
- 用甲 (KP) 作为氧化剂进行激光点火实验.
主要成果:
- 成功制备了具有微核心外结构的AlB2@HTPFA复合材料.
- 随着聚合物含量增加,燃烧效率分别增加了4.1%,5.6%和7.5%.
- AlB2@HTPFA (5 wt%) 的活性是原始AlB2的1.5倍.
- 在AlB2@HTPFA/KP复合材料中观察到较短的燃烧持续时间和增强的点火/燃烧特性.
结论:
- 现场聚合法精确控制涂层厚度和界面相互作用,优化复合材料的性能.
- 与原始AlB2相比,AlB2@HTPFA复合材料的反应性和燃烧效率明显提高.
- HTPFA涂层促进了预点火反应,提高了材料的整体能量性能.
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