火炸药学报2025，Vol.48Issue(12)：1121-1133,1177-1179,16.DOI:10.14077/j.issn.1007-7812.202507010
含能含氟小分子包覆铝粉的制备及其热分解机理
Preparation of Energetic Fluorine-containing Small Molecule Coated Aluminum Powder and Its Thermal Decomposition Mechanism
摘要
Abstract
To investigate the effect of the novel energetic fluorinated small molecule 2-nitro-1,3-diazetidinone(2-NCF)on the energy release of aluminum powder,2-NCF-coated micron aluminum was prepared via physical vapor deposition.The structural characteristics and thermal decomposition mechanism of the composite were examined using theoretical calculations and multi-ple experimental techniques.The results show that 2-NCF binds to the aluminum surface through coordination between the car-bonyl oxygen and surface Al3+ions,with an optimal coating mass ratio of 1∶1.TG-DSC analysis indicates that the coating in-creases the exothermic enthalpy of aluminum from 6 560J/g to 15 428J/g,a 135％enhancement.Ignition tests reveal that the coating shortens the ignition delay from 3.06 ms to 1.23 ms and extends the combustion duration from 61.83ms to 126.3 ms.Furthermore,active gaseous species(e.g.,NO2,HF)released from 2-NCF decomposition react with aluminum to form vola-tile AlF3,promoting sustained oxidation and energy release.Kinetic analysis demonstrates that the thermal decomposition fol-lows the random chain scission model(L2),with a combined kinetic apparent activation energy of 557.12 kJ/mol.This ele-vated Ea confirms that 2-NCF optimizes the reaction pathway by reducing the phase transformation energy barrier.关键词
物理化学/含能材料/2-NCF/物理沉积法/铝粉/包覆/热分解机理Key words
physical chemistry/energetic materials/2-NCF/physical settlement/aluminum powder/cladding/thermal de-composition mechanism分类
军事科技引用本文复制引用
魏恺鑫,王业腾,徐志斌,孟子晖,鄂秀天凤..含能含氟小分子包覆铝粉的制备及其热分解机理[J].火炸药学报,2025,48(12):1121-1133,1177-1179,16.基金项目
国家自然科学基金(No.22105024) （No.22105024）
