热分解途径在矿能量材料DAP-7:机制和金属氧化物调解
Rui Pu1, Xing-Da Wei1, Yu Wang2
1National Key Laboratory of Solid Rocket Propulsion, Northwestern Polytechnical University, Xi'an 710072, China.
Langmuir : the ACS journal of surfaces and colloids
|November 23, 2025
概括
这项研究探讨了矿能量材料氨二甲酸盐 (DAP-7) 的热分解. 发现像Fe2O3和CuO这样的金属氧化物可以有效调节其分解并提高推进剂应用的燃烧速度.
科学领域:
- 能量材料科学 能量材料科学
- 材料化学 材料化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 矿能量材料提供高性能和热稳定性.
- 甲 (DAP-7) 是一个有前途的能量材料.
- 了解其热分解对于应用开发至关重要.
研究的目的:
- 为了阐明DAP-7的热分解行为.
- 为了研究添加的金属氧化物 (Fe2O3,CuO) 对DAP-7的分解的影响.
- 为了评估金属氧化物对燃烧性能的影响.
主要方法:
- 不同扫描热量计 (DSC) 和热重力测量分析 (TGA).
- 使用基辛格,组合和弗里德曼方法的动力分析.
- 福里埃变换红外光谱-质谱 (FTIR-MS) 用于气体产品的识别.
- 燃烧试验以确定线性燃烧速度.
主要成果:
- DAP-7在112°C呈现相变和两阶段的外热分解,在383°C达到峰值.
- 动力分析表明A2机制的激活能量为238.19kJ/mol和188.99kJ/mol.
- Fe2O3 整合分解和降低激活能量到 193.80 kJ/mol.
- CuO加速了早期反应,导致DAP-7/CuO的线性燃烧速率显著提高,达到32mm/s,而纯DAP-7的7.1mm/s相比.
结论:
- DAP-7的结构和相互作用有助于它的稳定性.
- 金属氧化物战略性地改变了分解路径,增强了能量释放和燃烧动态.
- DAP-7的催化介导工程为定制高能推进剂性能提供了一个可行的途径.
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