火炸药学报2026，Vol.49Issue(2)：172-181,10.DOI:10.14077/j.issn.1007-7812.202508009
DAP-4@Al核壳结构制备及性能研究
Preparation and Performance Study of DAP-4@Al Core-shell Structures
摘要
Abstract
In order to improve the issue of particles agglomeration of metal fuels within solid propellants,a core-shell structure is employed to create a micro-and nano-scale composite of oxidizer and fuel.DAP-4@Al core-shell composite materials were prepared using DAP-4 as the core oxidizer,EVA binder as the modifier,and nano-sized Al powder as the outer fuel.The effects of nano-Al content on the coating efficiency,thermal decomposition,and combustion performance of DAP-4@Al were investigated.The condensed combustion products were also collected for characterization.The results showed that when the mass fraction of nano-Al reached 20％,DAP-4 was completely encapsulated,forming a uniform and well-defined core-shell structure.Nano-Al powder exhibited a certain catalytic effect on the thermal decomposition reaction of DAP-4.The ignition and combustion tests demonstrated that the incorporation of nano-Al significantly enhanced the heat release and combustion in-tensity of DAP-4.When the mass fraction of nano-Al was 20％,the maximum flame temperature notably increased to 1 563 ℃.Additionally,the presence of Al particles effectively modulated the burning rate of DAP-4,indicating that the DAP-4@Al core-shell composite exhibits higher energy characteristics and better combustion performance,and enhances the disper-sion of fuel throughout the composite system and improves the combustion efficiency.关键词
物理化学/钙钛矿含能材料/核壳结构/金属燃料/EVA/DAP-4Key words
physical chemistry/perovskite energetic materials/core-shell structures/metal fuels/EVA/DAP-4分类
军事科技引用本文复制引用
袁治雷,李岩,孙彬峰,邱玉,梁凯丽,徐文峥,刘洋,胡立双..DAP-4@Al核壳结构制备及性能研究[J].火炸药学报,2026,49(2):172-181,10.基金项目
国家自然科学基金(No.52276138) （No.52276138）
