增能钝感单基药的燃烧特性

为了优化单基药的弹道性能,对其进行了改性研究。对11/7单基药进行硝化甘油浸渍及聚酯类材料阻燃处理,得到一种增能钝感单基药。利用点火试验装置及密闭爆发器对该类型发射药进行了点火及燃烧性能试验,点火试验结果表明:与原单基药对比,增能后的发射药点火延迟时间从5.8ms缩短到4.1ms,增能钝感后的发射药点火延迟时间从5.8ms延长到45.5ms以上;密闭爆发器试验中增能钝感前后发射药燃烧时间与点火试验中点火延迟时间的变化趋势相同(原单基药为9.5ms,增能后为8.5ms,增能钝感后为10.86ms以上),增能后的发射药与原单基药相比具有一定的渐增性燃烧特性。

Combustion Properties of the Energy-increased Desensitized Single-base Propellant

A energy-increased desensitized propellant was obtained by dipping of nitroglycerine and addition of fire-retardant polyester materials into 11/7 single-base propellant.The tests were carried out in an ignition apparatus and a closed bomb.The results of ignition test show that ignition delay time of the energy-increased propellant decreases from 5.8 ms to 4.1 ms,while that of the energy-increased desensitized propellant increases from 5.8 ms to 45.5 ms.The results of the closed bomb show that combustion time of the original single-base propellant is 9.5 ms,the energy-increased propellant is 8.5 ms,and the energy-increased desensitized propellant is 10.86 ms,respectively.The energy-increased desensitized propellant has very progressive combustion properties.