碳纳米管及碳黑对BNCP感度性能的影响

摘要

采用DSC、GJB5891.22,24,25,27-2006方法研究了掺杂碳纳米管(CNTs)及碳黑(CB)对高氯酸·四氨·双(5-硝基四唑)合钴(Ⅲ) (BNCP)的热、撞击、摩擦、火焰、静电火花和激光感度的影响.结果表明:(1)碳纳米管和碳黑能够降低半导体激光起爆BNCP发火阈值；(2)掺杂5％ CNTs和5％ CB的BNCP的50％激光发火阈值分别为13.76和5.06 mJ; (3)在加热速率为10 ℃·min-1的条件下,BNCP、BNCP/CNTs、BNCP/CB主要放热分解峰温度分别为289.87,277.75,276.67 ℃；(4)撞击、火焰感度:BNCP ＞BNCP/CNTs＞BNCP/CB;摩擦感度:BNCP/CB＞BNCP/CNTs ＞BNCP;静电火花感度:BNCP/CB＞BNCP＞BNCP/CNTs.%Sensitivities to heat,laser.impact,friction,flame and electrostatic spark for tetraamnine bis(5-nitrotetrazolato) cobalt(Ⅲ) per-chlorate (BNCP) and BNCP doped with carbon nanotubes (CNTs) and carbon black (CB) were measured and studied by DSC, laser sensitivity test and standardization methods GJB5891.22,24,25,27 -2006. Results show that (1) CNTs and CB make the semiconduction laser initiation threshold value of BNCP decrease; (2) the 50% ignition threshold values of BNCP doped with 5% CNTs and 5% CB are 13.76 mJ and 5.06 mJ, respectively; (3) the peak temperature of main exothermic decomposition reaction at a heating rate of 10 ℃·min-1 for BNCP,BNCP/CNTs 10 -20 nm mixture and BNCP/CB mixture are 289.87 ℃,277.75 ℃ and 276.67 ℃,respectively; (4) the sensitivity decreases in the order BNCP > BNCP/CNTs > BNCP/CB for impact and flame sensitivity, BNCP/CB >BNCP/CNTs > BNCP for friction sensitivity,and BNCP/CB >BNCP > BNCP/CNTs for electrostatic spark sensitivity.