摘要
为研究TATB和NQ对DNTF结晶过程的影响,采用热台显微镜记录了DNTF、DNTF/TATB和DNTF/NQ的结晶过程;采用差示扫描量热仪(DSC)研究了DNTF、DNTF/TATB和DNTF/NQ的非等温结晶动力学特性,通过Avrami方程、Jeziorny方程、莫志深方程以及Hu-Zhao-Gao-Zhao方程,分别对DNTF、DNTF/TATB体系和DNTF/NQ体系的非等温结晶过程进行了解析。结果表明,TATB和NQ的加入降低了DNTF的过冷度,凝固温度分别提高了21℃和20℃,提高了DNTF的结晶速度(TATB的加入使凝固线速度提高了197%;NQ的加入凝固线速度提高了203%);Avrami方程、Jeziorny方程能够较好地描述3种体系的结晶过程,DNTF、DNTF/TATB和DNTF/NQ的平均Avrami指数分别为3.73、3.09和3.27;莫志深方程计算结果表明,结晶速率顺序:DNTF/NQ>DNTF/TATB>DNTF;用Hu-Zhao-Gao-Zhao方程计算的DNTF、DNTF/TATB和DNTF/NQ的结晶活化能,分别为288.50、234.65、193.71kJ/mol;分析认为,钝感炸药(TATB/NQ)显著提升了DNTF结晶速率及致密度,优化了熔铸炸药的工艺效率、装药质量与安全性。
To investigate the effect of TATB and NQ on DNTF crystallization,Hot Stage Microscopy was employed to observe the crystallization processes of pure DNTF and its composites with TATB and NQ.Differential scanning calorimetry(DSC)was utilized to analyze the non-isothermal crystallization kinetics.The Avrami,Jeziorny,Mo Zhisun,and Hu-Zhao-Gao-Zhao equations effectively described these processes.Results demonstrate that TATB and NQ reduce DNTF supercooling,increase freezing point temperatures by 21℃and 20℃,respectively.Solidification rates improved significantly,with crystallization line speeds increasing by 197%for DNTF/TATB and 203%for DNTF/NQ.Both the Avrami and Jeziorny equations accurately represent the crystallization processes.Average Avrami indices are 3.73 for DNTF,3.09 for DNTF/TATB,and 3.27 for DNTF/NQ.Calculations using the Mo Zhisun equation show solidification rates in the order:DNTF/NQ>DNTF/TATB>DNTF.Activation energies for crystallization are 288.50kJ/mol for DNTF,234.65kJ/mol for DNTF/TATB,and 193.71kJ/mol for DNTF/NQ.Insensitive explosives(TATB/NQ)enhance DNTF crystallization rate and density,optimize the melt-cast explosive process,and improve charge quality and safety.
作者
刘思乐
马晋超
贾宏选
钱华
肖川
LIU Si-le;MA Jin-chao;JIA Hong-xuan;QIAN Hua;XIAO Chuan(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Shanxi Beihua GuanlüChemical Co.,Ltd.,Yongji Shanxi 044501,China;China Research and Development Academy of Machinery Equipment,Beijing 100089,China)
出处
《火炸药学报》
北大核心
2025年第7期637-644,I0003,共9页
Chinese Journal of Explosives & Propellants
基金
国家自然科学基金(No.22305122)
江苏省自然科学基金(No.BK20230935)
中国科协青年人才托举工程(No.YESS20230320)。
