NM/RDX/Nano-Al膏体推进剂特性研究  

Study on NM/RDX/Nano-Al Pasty Propellant Property

作　　者：李鑫[1] 赵凤起[1] 罗阳[1] 裴庆[1] 李猛[1] 胥会祥[1] 

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《推进技术》2015年第1期136-141,共6页Journal of Propulsion Technology

基　　金：国家自然科学基金(21173163);燃烧与爆炸技术重点实验室(62202060103)

摘　　要：为进一步研发新型特种推进剂品种，向推进技术应用领域发展和延伸，开展了NM （硝基甲烷）/RDX/Nano-Al膏体推进剂配方研究，并对其能量、流变以及燃烧性能进行了分析。结果表明：采用最小自由能法估算膏体推进剂配方比冲为2674.2 N·s/kg；膏体推进剂流变行为遵循Herschel-Bulk？ley本构方程，在0～30℃范围内，假塑性指数n小于1，属于非牛顿假塑性流体，同时膏体推进剂具有明显的触变性以及蠕变-回复特性，在角频率为1Hz且低应力下（≤50Pa），膏体推进剂储能模量（G′）大于损耗模量（G′′），此时具有较稳定的三维网络结构；与含纳米铝热剂Nano-Al/PbO双基系推进剂相比，膏体推进剂在10~15MPa压强范围内燃速较快，但在低压下未燃。In order to further develop new special propellant and promote the development and extension of the ulsion technology,the NM/RDX/Nano-Al pasty propellant was studied and the energy performance,rheolog-ical behavior and combustion property were analyzed. Results show that the specific impulse is 2674.2 N·s/kg by the estimation of the minimum free energy method. The rheological behavior follows the Herschel-Bulkley law , and the non-Newtonian pseudopalstic index n is less than 1 at 0~30℃and the pasty propellant is a typical pseu-dopalstic fluid. Also,the pasty propellant has obvious thixotropy and creep-recovery characteristics. The storage modulus（G＇）is greater than the loss modulus（G＇＇）at the angular frequency of 1Hz under low stress（not more than 50Pa）, and now pasty propellant has a three-dimensional network structure. Compared with the double-base propellant containing nano thermite Nano-Al/PbO, the burning rate of pasty propellant is greater at 10~15MPa,but it does not burn at low pressure.

关 键 词：凝胶 膏体推进剂 配方 推进剂性能 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]