粘结压实药柱变容燃烧中止实验研究  

Experimental Studies on Interrupted Burning of Consolidated Propellant Charges in Semi-closed Chamber With Variable Volume

作　　者：肖正刚[1] 应三九[1] 徐复铭[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《弹道学报》2014年第1期1-6,共6页Journal of Ballistics

基　　金：国防973项目

摘　　要：为研究压实装药在变容情况下的动态燃烧稳定性、安全性能及不同表面处理方法对动态燃烧渐增性能的影响,将太根小粒药表面进行解体预处理后,采用乙醇/丙酮高温热蒸汽软化法将其压实成堆积密度为1.35g·cm-3的药柱,再进行表面处理,得到待测的压实药柱样品。利用设计自制的变容燃烧模拟器进行动态燃烧中止试验,并记录燃烧过程的压力-时间曲线。与用纯的硝化棉胶包覆的压实药相比,添加点火敏化剂包覆样品易于点火,而添加钝感剂的包覆样品点火滞后,动态活性降低,燃烧渐增性较好。所制得的粘结压实药解体完全、燃烧稳定,药粒无破碎,发射过程是安全的。结果表明:合适的表面处理方法能有效抑制粘结压实药柱的起始燃气生成速率,实现较好的渐增性燃烧。To study the combustion stability and safety of consolidation propellants under the conditions of variable combustion-chamber volume and to discuss the effects of different surface-treatment methods on progressive burning,high temperature solvent vapor of alcohol/acetone were used to consolidate double-base oblate sphere propellant standard grains plasticized with tri-ethyeneglycol dinitrate （TEGN ） to propellants charge with high compaction density of 1 .3 5 g＆#183;cm-3 after pre-deconsolidation treatment.The obtained consolidated charges were coated by pure nitrocellulose gel,mixed nitrocellulose gel containing ignition sensitizer and mixed nitro-cellulose gel containing the deterrents,respectively.Interrupted burning experiments of consolidated propellant charges were carried out in a semi-closed test rig with variable volume, and the pressure-time history of gas generation during the interrupted burning was recorded by the pressure transducer.The effect of different surface treatment method on the burning progressivity of prepared samples was discussed based on the deduced dynamic vivacity data. Compared with coated consolidated with pure nitrocellulose gel,it is easy to be ignited for the samples coated by the mixed nitrocellulose gel containing ignition sensitizer.In contrast,the prepared samples coated by deterred nitrocellulose gel indicates an ignition delay;the peak of dynamic vivacity decreases a little,and the progressive burning is good.Results show that appropriate surface treatment method can inhibit the initial dynamic vivacity of consolidated charges and obtain the burning progressivity.

关 键 词：发射药 压实装药 变容中止燃烧 渐增性燃烧 

分 类 号：TQ562[化学工程—炸药化工]