叠氮硝胺发射药表面钝感新技术

A New Deterring Technique of Azidonitramine Propellant

为解决高增塑剂含量的高能发射药表面钝感问题,采用小分子多炔基化合物均苯三甲酸三炔丙酯(TPTM)作为钝感剂前驱体,经喷涂工艺渗入叠氮硝胺发射药表层后与基体组分1,5-二叠氮基-3-硝基-3-氮杂戊烷(DIANP)反应,形成交联网状大分子钝感剂,并通过密闭爆发器实验和热加速老化实验表征了钝感效果。实验结果表明,TPTM与DIANP在50℃下即可完全反应,采用TPTM对叠氮硝胺发射药进行表面钝感处理后,发射药的初始燃烧活度大幅度降低,渐增性燃烧特征量Lm/L0达到1.8左右,Bm值在0.5左右,并且在50℃加速老化6个月以后燃烧性能基本不变。以小分子多炔基化合物作为钝感剂前驱体的方法适用于对叠氮硝胺发射药进行表面钝感处理,并且钝感效果良好,满足长储稳定性的要求。

To solve the surface-deterred problem of high-energy propellant with high plasticizer concentration, a small-molecule multiple alkynyl compound, such as Tripropargyl 1,3,5-benzenetricarboxylate （TPTM） , is introduced as deterrent precursor. It could react with 1,5-diazido-3-nitrazapentane （DIANP） which is a ingredient of azidonitramine propellant to form high-molecule deterrent with cross-linked net- work structure after it is permeated into surface layer of azidonitramine propellant with spraying tech- nique. The deterring effects are characterized by closed-bomb test and thermal-aging test. The results show that TPTM can reacts with DIANP at 50℃ completely. When the azidonitramine propellant is deterred with TPTM, the initial burning activity of the deterred propellant is substantially reduced, its progressive burning characteristic value L,/Lo reaches about 1.8 and Bm is about 0.5 ; and the combustion performance of the deterred propellant is ultimately unchanged after thermal-aging at 50 ℃ for six month. The small-molecule multiple alkynyl compound as deterrent precursor is applicable to the surface deterring of azidonitramine propellant, makes the deterring effect excellent and insures the long-storage stability.