摘要
(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]是新型含能钙钛矿化合物的典型代表,需明确其热分解行为、热分解机制及感度特性,以推动其在配方中的应用。以差示扫描量热-热重分析方法实现了分解放热量、分解温度等参数的获取;以动力学模拟计算解析了相关分解机理;以同步热分析-红外-质谱联用技术结合原位红外技术探索了(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]的分解产物及分解历程;以国军标法获得了热感度、摩擦感度与撞击感度参数。结果表明:在10℃·min^(-1)的升温速率下,(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]分解放热量为4227 J·g^(-1),分解温度则达到345℃,高于黑索今(RDX)、奥克托今(HMX)、六硝基六氮杂异伍兹烷(CL-20)等多数现役含能材料,显示了优异的热稳定性;分解产物研究表明其立方笼状骨架有效稳定了内部结合的有机物分子,使其热稳定性较高。此外,(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]在100℃下加热48 h的放气量约0.04 m L·g^(-1),撞击感度与机械感度分别为32%和80%,优于RDX和HMX。
(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]is a representative of energetic perovskite compounds.It is necessary to clarify the corresponding thermal decomposition behavior,thermal decomposition mechanism and sensitivity characteristics in order to promote the application in formulations.Thermal decomposition parameters,including heat release amount and decomposition temperatures,were obtained by simultaneous differential scanning calorimetric and thermogravimetric analyses methods.The relevant decomposition mechanism was analyzed by kinetic simulation calculations.The decomposition products and decomposition processes of(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]were explored by DSC·TG-FTIR-MS coupled technique combined with in-situ infrared technology.The parameters of thermal sensitivity,friction sensitivity and impact sensitivity were obtained by national military standard methods.The results show that the heat of decomposition of(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]is 4227 J·g^(-1)at the heating rate of 10℃·min^(-1) and the decomposition temperature reaches 345℃,which is higher than that of most active energetic materials,including Hexogen(RDX),ogen(HMX)and hexanitrohexaazoisowuzane(CL-20),indicating an outstanding thermal stability.The decomposition products analysis shows that the cubic cage-like skeleton effectively stabilizes the internal organic molecule,resulting in the high thermal stability of(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)].In addition,the outgassing amount of(C_(6)H_(14)N_(2))[Na(ClO_(4))_(3)]heated at 100℃for 48 h is about 0.04 m L·g^(-1),and the impact sensitivity and mechanical sensitivity are 32%and 80%,respectively,which are better than RDX and HMX.
作者
周静
张俊林
丁黎
陈劭力
邱丽莉
祝艳龙
王伯周
ZHOU Jing;ZHANG Jun-lin;DING Li;CHEN Shao-li;QIU Li-li;ZHU Yan-long;WANG Bo-zhou(School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2022年第7期681-686,共6页
Chinese Journal of Energetic Materials
基金
国家自然科学基金资助(21805226)。
作者简介
周静(1987-),女,工程师,主要从事含能材料热分析与热安全研究。e-mail:zhoujing19872006@163.com;通信联系人:张俊林(1986-),男,副研究员,主要从事含能材料合成与性能研究。e-mail:junlin-111@163.com。
