摘要
为了研究5,5′?联四唑?1,1′?二氧二羟胺盐(TKX?50)基混合炸药的爆轰及安全性能,以F2314氟橡胶为粘结剂,采用淤浆捏合法制备了典型TKX?50基混合炸药。按照国军标(GJB?772A-1997)和自建的标准测试方法对炸药的爆轰性能(爆速、爆压、爆热、圆筒比动能)和安全性能(撞击感度、冲击波感度、热刺激感度)进行了测试,并将实测性能与PBX?9501等炸药进行了对比分析。结果表明,在爆轰性能方面,与PBX?9501相比,制备的TKX?50基混合炸药实测爆速值为9037 m·s-1(密度1.860 g·cm-3),但其爆热(5055 J·g-1)、爆压(26.4 GPa)和做功能力(1.377 kJ·g-1)较低。在安全性能方面,TKX?50原材料经重结晶后撞击感度可显著降低,最低撞击能由5J提高至32J,TKX?50基混合炸药的冲击波感度(L50=15.1 mm)低于HMX基混合炸药(L50=22.6 mm)。此外,TKX?50的热分解温度(240℃)、5 s爆发点(277℃)均低于HMX(285℃,327℃),以TKX?50为基的混合炸药在热刺激下更容易发生剧烈反应。
In order to study the detonation and safety performances of dihydroxylammonium 5,5′?bistetrazole?1,1′?diolate(TKX?50)based polymer bonded explosives(PBX),the TKX?50 based PBX was prepared by a slurry kneading method,using fluororesin F2314 as the polymer binder.The detonation performance(detonation velocity,detonation pressure,detonation heat and cylinder expansion tests)and safety performance(impact sensitivity,shock wave sensitivity and thermal sensitivity)were carried out according to the National Military Standard(GJB?772A-1997)and self?built standard test method,and the results were compared with PBX?9501,etc.The results showed that,comparing with PBX?9501,the detonation velocity of TKX?50 based PBX was as high as 9037 m·s-1(density of 1.860 g·cm-3),while the detonation heat(5055 J·g-1),detonation pressure(26.4 GPa)and the work capacity(1.377 kJ·g-1)were lower.For the safety performances,the minimum impact energy of raw TKX?50 was only 5 J,while that of recrystallized product was 32 J.The shock wave sensitivity of TKX?50 based PBX was lower(L50=15.1 mm)than that of HMX?based PBX(L50=22.6 mm).Besides,the thermal decomposition temperature(240℃)and 5 s explosion temperature(277℃)of TKX?50 was lower than HMX(285℃,327℃).In this case,TKX?50 based PBX would react more violently under thermal stimulation.
作者
刘佳辉
范桂娟
卢校军
徐容
杨光成
杨志剑
LIU Jia hui;FAN Gui juan;LU Xiao jun;XU Rong;YANG Guang cheng;YANG Zhi jian(Institute of Chemical Materials,CAEP,Mianyang 621999,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2019年第11期902-907,共6页
Chinese Journal of Energetic Materials
基金
国家自然科学基金(21805139)
专项资金资助(30918011312)
