发射药落锤撞击试验及评价方法研究  

Research on the Experiment and Evaluation Methods of Propellants in Dropping Hammer Impact Test

作　　者：周敬[1] 杨丽侠[1] 陈晓明[1] 张邹邹[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《爆破器材》2014年第2期15-19,共5页Explosive Materials

摘　　要：提出了一种新的评价高能发射药动态力学强度的方法,即采用落锤撞击发射药粒,用药粒发生临界损伤时的撞击能和极限抗冲应力来表征发射药的动态力学性能。结果表明,该方法能够定量评价发射药的动态力学强度,并得到太根药、硝胺药、硝基胍药等3种发射药的临界撞击能分别为18.8 J/cm2、14.2 J/cm2、3.8 J/cm2,极限抗冲应力分别为247.2 MPa、214.2 MPa、118.5 MPa。A new evaluation method of dynamic strength of high energy propellants was proposed. Dynamic mechani-cal property of the propellants is characterized by the critical impact energy and the limit impact stress when the critical damage to the granular propellants by a dropping hammer occurs. Results indicate that the evaluation method can quantita-tively reflect the dynamic mechanical strength of the propellants. The critical impact energy of TEGDN propellant, nitra-mine propellant and nitroguanidine propellant is 18. 8 J/cm2,14. 2 J/cm2 and 3. 8 J/cm2,and the limit impact stress 247. 2 MPa,214. 2 MPa and 118. 5 MPa,respectively.

关 键 词：应用化学 高能发射药 落锤撞击 临界撞击能 极限抗冲应力 

分 类 号：TQ562[化学工程—炸药化工]