自然老化对FOX-7基双元混合物相容性的影响  

Effect of Natural Aging on Compatibility of FOX-7 Based Binary Mixtures

作　　者：李建[1] 李亚宁 常鹏程 王伯良[1] LI Jian;LI Yaning;CHANG Pengcheng;WANG Boiang(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Shanxi Jiangyang Chemical Engineering Co.,Ltd.,Taiyuan 030041,China)

机构地区：[1]南京理工大学化学与化工学院,南京210094 [2]山西江阳化工有限公司,太原030041

出　　处：《装备环境工程》2024年第2期19-27,共9页Equipment Environmental Engineering

基　　金：国家自然科学基金(12302440);中国博士后科学基金(2023M741713)。

摘　　要：目的 掌握自然老化如何影响1,1-二氨基-2,2-二硝基乙烷(FOX-7)基双元混合物的相容性,揭示老化过程对其相容性的潜在影响。方法 采用热分析技术(差示扫描量热法,DSC)和非热分析技术(傅里叶变换红外光谱,FTIR),对老化前后FOX-7基双元混合物的热分解特性和分子结构特征进行评估。利用DSC测得混合物和单质FOX-7的DSC初始分解峰温,对FOX-7与8种含能材料和4种惰性材料的相容性进行评估,再结合FTIR的测试结果辅助说明混合物分子结构的变化。结果 DSC热流曲线显示,除FOX-7/RDX混合物外,其他研究对象在老化前后均展现出良好的相容性。然而,以FOX-7/CL-20为代表的混合物在老化后的最大放热峰温出现明显变化,表明老化对这些混合物的相容性产生了影响。在FTIR光谱分析中观察到的官能团变化进一步表明,FOX-7与RDX、CL-20、AP、HTPB、DOS或WAX等组成的双元体系在老化过程中发生了化学反应。结论 本研究的发现对理解和评估老化过程对FOX-7基双元混合物相容性的影响具有重要意义,可用于指导FOX-7基含能材料长期储存和使用中的安全设计。The work aims to understand how natural aging affects the compatibility of 1,1-diamino-2,2-dinitroethane(FOX-7)based binary mixtures,and reveal the potential impact of aging on their compatibility.In the work,thermal analysis techniques(Differential Scanning Calorimetry,DSC)and non-thermal analysis techniques(Fourier Transform Infrared Spec-troscopy,FTIR)were employed to assess the thermal decomposition characteristics and molecular structural features of FOX-7 based binary mixtures before and after aging.DSC was used to measure the initial decomposition peak temperature of the mix-tures and pure FOX-7.A comprehensive assessment on the compatibility of FOX-7 with eight energetic materials and four inert materials was conducted,supplemented by FTIR results to explain the molecular structural changes in the mixtures.The DSC thermograms showed that except for the FOX-7/RDX mixture,all other studied objects exhibited good compatibility before and after aging.However,mixtures represented by FOX-7/CL-20 showed significant changes in the maximum exothermic peak temperature after aging,indicating that aging affected the compatibility of these mixtures.The functional group changes ob-served in the FTIR spectral analysis further suggested that chemical reactions occurred in the binary systems comprising FOX-7 and RDX,CL-20,AP,HTPB,DOS,or WAX during the aging process.The findings of this study are significant for under-standing and assessing the impact of aging on the compatibility of FOX-7 based binary mixtures,and can guide the safe design for long-term storage and use of FOX-7 based energetic materials.

关 键 词：相容性 老化 FOX-7 高能材料 惰性材料 储存稳定性 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]