低能爆炸箔点火器研究

Study on Low Energy Exploding Foil Igniter

为降低爆炸箔冲击片点燃B/KNO3点火药的发火能量,对B/KNO3药剂组分进行了细化处理,优化了压药密度。在压药密度为1.50～1.64g.cm-3、发火电容为0.12μF的条件下,采用升降法进行了发火试验,试验结果表明,爆炸箔冲击片点燃超细B/KNO3点火药50%发火能量平均值约29mJ。在试验中监测了爆炸箔冲击点燃超细B/KNO3点火的爆发电流,测试表明:爆炸箔冲击片点燃超细B/KNO3点火药全发火爆发电流约500A。

In order to decrease the firing energy of B/KNO3 composition ignited by the exploding foil igniter,the components of B/KNO3 were refined,and the loading density was optimized.The firing experiments were carried out using Bruceton method with the loading density of 1.50-1.64 g·cm-3,and the fire capacitance of 0.12 μF.The burst current of ultrafine B/KNO3 composition ignited by the exploding foil igniter was also tested.Results show that the average value of 50% firing energy of ultrafine B/KNO3 composition ignited by the exploding foil igniter is 29 mJ,and the all-fire burst current is about 500 A.