制备具有增强燃烧性能的DAP-4@Ti核心外复合材料
Yang Liu1, Yan Li2, Huinan Wang3
1School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China.
这项研究使用超声波方法创建了涂有纳米 (Ti) 的DAP-4复合材料. 这些复合材料显示了改善的热分解和显著提高的燃烧性能,包括更高的热释放和更快的火焰速度.
科学领域:
- 材料科学 材料科学 材料科学
- 燃烧化学 燃烧化学是什么
背景情况:
- 提高像DAP-4这样的高能耗材料的燃烧性能对于各种应用至关重要.
- 实现添加剂的均分散,如纳米 (Ti) 粉,是复合材料制备中的一个关键挑战.
研究的目的:
- 为了合成DAP-4@Ti核心外结构复合材料.
- 研究纳米Ti涂层对DAP-4的分散,热分解和燃烧特性的影响.
主要方法:
- 超声波复合方法用于制备DAP-4@Ti核心外结构.
- 使用扫描电子显微镜 (SEM),能量分散式X射线光谱 (EDS) 和X射线衍射 (XRD) 的表征.
- 通过同步热分析 (STA) 和使用电点火的燃烧行为调查进行热分解分析.
主要成果:
- 成功制备了具有核心外形态的DAP-4@Ti复合材料,其中DAP-4是核心,纳米Ti粉末形成外.
- 纳米Ti涂层显著提高了DAP-4的燃烧性能,产生8889 J/g的最大燃烧热量.
- 观察到火焰的峰值温度为1234°C,火焰传播速度最快为115mm/s.
- 核心外颗粒的热分解特性得到了增强.
结论:
- 超声波方法有效地分散纳米Ti粉末,在DAP-4周围形成一个保护性外.
- 与原始的DAP-4相比,DAP-4@Ti核心外复合材料具有优越的燃烧特性.
- 纳米Ti涂层是一种可行的策略,可以提高高能材料的性能.
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