摘要
作为一种新兴的高能物质,钙钛矿含能材料研究方兴未艾,其种类和数量有待加速拓展。研究采用溶液法合成首个高氯酸基的双钙钛矿含能材料{(C_(6)H_(14)N_(2))_(2)[Na(NH_(4))(Cl O4)6]}_(n)(DPE-1)且制得单钙钛矿含能材料[(C_(4)H_(12)N_(2))K(ClO_(4))_(3)]_(n)(PAP-2),研究了DPE-1和PAP-2的化学结构、热稳定性、爆轰性能和机械感度。X-射线单晶衍射分析表明,DPE-1具有双钙钛矿结构,属Pa-3空间群,PAP-2具有单钙钛矿结构,属Pnma空间群。DPE-1的热分解温度、爆轰能量和机械感度分别为Tdec=368.9℃、D=8858 m·s^(-1)、p=38.4 GPa、IS>40J、FS=20 N,与已报道的高碘酸基双钙钛矿含能材料(C_(6)H_(14)N_(2))_(2)[Na(NH_(4))(IO_(4))_(6)]}_(n)(DPPE-1)相比均大幅度改变,验证在双钙钛矿结构空间中寻求高性能绿色起爆药的可行性。PAP-2与同系列的单钙钛矿含能材料具有相当的热稳定性(Tdec>280℃)和爆轰能量(爆速D>8500 m·s^(-1)且爆压p>30 GPa),但撞击感度显著增高,摩擦感度明显降低。
As an emerging high-energy substance,the development of perovskite energetic materials in both variety and quantity has more urgency.The first perchlorate-based double perovskite energetic material{(C6H14N2)2[Na(NH4)(ClO4)6]}n(DPE-1)and a single perovskite energetic material[(C_(4)H_(12)N_(2))K(ClO_(4))_(3)]_(n)(PAP-2)were synthesized by a solution-based method.The chemical structure,thermal stability,detonation performance,and mechanical sensitivity of both DPE-1 and PAP-2 were system-atically investigated.Single-crystal X-ray diffraction analysis shows that DPE-1 crystallizes in a double perovskite structure with space group Pa-3,while PAP-2 crystallizes in a single perovskite structure with space group Pnma.Compared with the previous-ly reported periodate-based double perovskite energetic material(C_(6)H_(14)N_(2))_(2)[Na(NH_(4))(IO_(4))_(6)]}n(DPPE-1),DPE-1 exhibits signif-icant improvements in the thermal decomposition temperature(Tdec=368.9℃),detonation velocity(D=8858 m·s^(-1)),detona-tion pressure(p=38.4 GPa),impact sensitivity(IS>40 J),and friction sensitivity(FS=20 N).These results validate the feasibili-ty of exploring high-performance,green primary explosives within the double perovskite structural framework.PAP-2 demon-strates comparable thermal stability(Tdec>280℃)and detonation performance(D>8500 m·s^(-1),p>30 GPa)with other single perovskite energetic materials in the same series,but its impact sensitivity is significantly increased and friction sensitivity is sig-nificantly reduced.
作者
张鑫慧
邓沐聪
张春杰
胡双启
冯永安
ZHANG Xin-hui;DENG Mu-cong;ZHANG Chun-jie;HU Shuang-qi;FENG Yong-an(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Collective Protection Equipment Research Institute,Shanxi Xinhua Chemical Defense Equipment Research Institute Co.,Ltd.Taiyuan 030051,China)
出处
《含能材料》
北大核心
2025年第6期573-580,共8页
Chinese Journal of Energetic Materials
基金
国家自然科学基金(22275169、22205049)
黑龙江省自然科学基金(LH2021B006)
山西省研究生科研创新项目(2023KY591)。
关键词
含能材料
单钙钛矿
双钙钛矿
能量
安全性
energetic materials
single-perovskite
double-perovskite
energy
safety performance
