摘要
为降低HMX的机械感度并保持其爆轰性能,采用溶液-水悬浮包覆法,利用4,10-二硝基-2,6,8,12-四氧杂-4,10-二氮杂四环[5.5.0.0^(5,9).0^(3,11)]十二烷(TEX)和氟橡胶F_(2603)对HMX进行包覆降感;考察了TEX与HMX的粒度级配、主炸药质量比以及黏结剂用量对包覆炸药感度的影响;观察了TEX/HMX包覆炸药的微观形貌,测试其晶型结构、撞击感度、摩擦感度和爆速等参数,并进行了对比分析。结果表明,TEX可在HMX的表面形成保护层;黏结剂F_(2603)质量分数3%时为最佳用量,且包覆后HMX的晶型保持不变,仍为β型;超细TEX(d_(50)=4.532μm)和HMX(d_(50)=10.234μm)粒度级配下的降感效果最好,与原料HMX相比,TEX/HMX(质量分数30%TEX)混合炸药的撞击感度和摩擦感度分别降低了48%和68%,在装药密度为1.72g/cm^3时的实测爆速可达到7 932m/s。
To reduce the mechanical sensitivity of HMX and maintain its detonation performance, the sensitivity re ducdon of coated HMX was carried out using 4, 10 dinitro 2, 6, 8, 12 tetraoxa 4, 10 diazatetracyclo [5. 5. 0. 0^5,9.0^3,11] dodecane （TEX） and fluoro rubber F2603 via solvent aqueous suspension coating method. The influence of par ticle gradation of TEX and HMX, mass ratio of main explosives TEX and HMX, and the amount of binder on the sensitivity of mixed explosive was studied. The micro morphology of TEX/HMX mixed explosive was coated, its crystal structure, impact sensitivities, friction sensitivities, and the detonation velocities etc. parameters were meas ured, and the comparative analysis was carried out, The results show that the protective layer can be formed on the surface of HMX, For binder F2603, the optimmum dosage is mass fraction of 3%, arid the crystal form of HMX re mains unchanged after being coated, HMX is still β type, The effect of decreasing sensitivity under the particle gra dation of superfine TEX （d50 4, 532μm） arid HMX （d50 10,234μm） is the best, Compared with raw HMX, the impact and friction sensitivity of the TEX/HMX （mass fraction 30GTEX） composite explosives reduce by 48% and 68%, respectively, and the measured detonation velocity can reach 7932m/s at a loading density of 1, 72g/cm^3.
作者
张帆
李斌栋
ZHANG Fan;LI Bin dong(School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2018年第4期394-398,403,共6页
Chinese Journal of Explosives & Propellants
关键词
HMX
TEX
包覆
降感
粒度级配
溶液水悬浮包覆法
HMX
TEX
coating
sensitivity reduction
particle gradation
solvent aqueous suspension coating inethod
