CL-20粉体的热爆炸临界温度试验研究  

Experimental study on the critical temperature of thermal explosion of CL-20 powder

作　　者：肖旭 李军 胡大双[1,2,3] 李坤 徐波 田军 李朝阳[2,3] XIAO Xu;LI Jun;HU Dashuang;LI Kun;XU Bo;TIAN Jun;LI Chaoyang(Science and Technology on Aerospace Chemical Power Laboratory,Xiangyang 441003,China;Research Center of Solid Propellant Safety Technology of Aerospace Industry,Xiangyang 441003,China;Hubei Institute of Aerospace Chemical Technology,Xiangyang 441003,China)

机构地区：[1]航天化学动力技术重点实验室,襄阳441003 [2]航天工业固体推进剂安全技术研究中心,襄阳441003 [3]湖北航天化学技术研究所,襄阳441003

出　　处：《固体火箭技术》2022年第1期146-151,共6页Journal of Solid Rocket Technology

摘　　要：为了获得六硝基六氮杂异戊兹烷(CL-20)粉体的热爆炸临界温度,分别采用差示扫描量热仪(DSC)、加速量热仪(ARC)和自研的热爆炸试验装置,对CL-20炸药粉体进行了热安全试验研究。结果表明,DSC试验、ARC试验与热爆炸试验获得的CL-20炸药粉体的热爆炸临界温度依次为231.99、200.66、174.40℃。不同的测试方法得到的热爆炸临界温度值不同。CL-20炸药的形状、尺寸、质量等对其发生热爆炸临界温度存在影响,存在尺寸效应。小药量热分析实验预估结果目前尚不能真实地反映生产尺度下含能材料的热安全性,存在小药量试验结果指导安全生产的风险和隐患。热爆炸试验更接近炸药的真实使用情况,其结果可为大药量条件下的热安全性评估提供数据支撑。Thermal safety experiments were carried out to obtain the critical temperature of thermal explosion of hexanitrohexaazaisowurtzitane(CL-20)by using differential scanning calorimeter(DSC),accelerating rate calorimeter(ARC)and self-developed thermal explosion experimental apparatus.Experimental values of the critical temperature corresponding to the three methods are 231.99℃,200.66℃and 174.40℃,respectively,which are different by various test methods.The critical temperature of thermal explosion is influenced by the shape,dimension and mass of the CL-20 powder,exhibiting a size effect.The thermal safety of energetic material in real production cannot be accurately predicted by small charge thermal analysis experiments.Therefore,there are risks and potential hazards when the production is guided by the result of the small charge thermal analysis experiment.Thermal explosion experiment is more close to the practical process,and the results will offer data support for the thermal safety assessment of explosives.

关 键 词：CL-20粉体 热安全性 热爆炸 临界温度 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]