Pharmacy Plasma Ignition Experiments With Sensitive Technology

Semiconductor Bridge(SCB)initiating element was used to ignite some primary explosive including nickel hydrazine nitrate(NHN),nickel hydrazine azide(NHA)and igniting mixtures including B/Pb₃O₄ and Zr/KClO₄ in this paper.The lowest ignition voltage for five primary explosives(NHA,NHN,lead azide,lead styphnate and lead picrate)was determined,and its sensitivity to SCB plasma was sequenced.The sensitization for LTNR and NHA to the plasma was carried out.The main contents of this thesis are as follows:(1)The igniting experiments to NHN and NHA with the SCB were tested systematically under the change of particle size,loading density and capacitor.The functional time of these two compounds change from shorten to growth with the particle size smaller and smaller.The capacitor needs to adapt to the different compound and SCB.The sensitiveness of each tested compound becomes high as the decrease of the loading density.(2)To the mixture of B/Pb₃O₄,the capacitor also needs to adapt to its formula and SCB. The sensitiveness becomes high as the decrease of the loading density.(3)The influence between ignition energy and the ratio of mixtures was researched.To the B/Pb₃O₄,the optimum mass proportion is 4:96,which is better than the 8:92.To the Zr/KClO₄,only the high content of zirconium powder can be ignited by SCB.(4)The sensitivity order of five primary explosives to the plasma is LTNR＞NHA＞lead picrate＞NHN＞LA after comparing the minimum ignition voltage of them.(5)According to the forms of plasma acting on the charge,the sensitization research was attempted through three aspects as thermal properties,electrical properties and impact shock. The micro size materials,which can easily accumulate the heat and less conducts the electricity,effectively sensitize to the NHA and LTNR.(6)The experience formulas related to the ignition energy and functional time for NHN, NHA,and B/Pb₃O₄ were established based on a series of ignition situation.