CL-20粒度对GAP/AP/Al高能推进剂燃烧性能的影响  

Effects of CL-20 Particle Size on Combustion Performances of GAP/AP/Al High-energy Propellants

作　　者：王瑛[1] 王正明 赵昱[1] 陈雪莉[1] 谢五喜[1] 赵凤起[1] 肖立柏[1] 付青山 WANG Ying;WANG Zheng-ming;ZHAO Yu;CHEN Xue-li;XIE Wu-xi;ZHAO Feng-qi;XIAO Li-bai;FU Qing-shan(Science and Technology on Combustion and Explosion Laboratory, Xi′an Modern Chemistry Research Institute, Xi′an 710065, China)

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：《火炸药学报》2021年第3期336-341,共6页Chinese Journal of Explosives & Propellants

基　　金：国家青年自然科学基金(No.21805225);装备预研重点实验室基金(No.6142603190308);国防基础科研专项(No.004020102);北京理工大学爆炸科学与技术重点实验室联盟实验室基金(No.LMJJ202001)。

摘　　要：为了研究CL-20粒度对含Al高能固体推进剂燃烧性能的影响,通过捏合浇铸工艺制备了含不同粒度CL-20(14μm、115μm)的GAP/AP/Al高能推进剂,采用靶线法测定了推进剂在不同压强下的燃速,并计算了压强指数;利用微型高温热电偶测温技术、燃烧火焰单幅照相技术研究了CL-20粒度对该推进剂燃烧性能影响的机理。结果表明,7~18MPa下含粗粒度(115μm)CL-20的GAP/AP/Al推进剂的燃速比含细粒度(14μm)CL-20的推进剂高7%~37%;2~10MPa下前者压强指数为0.52,后者为0.46;粗粒度CL-20较细粒度提前进行部分分解,分解产物除催化自身分解反应外,还促进了AP的分解,从而提高了相应推进剂凝聚相反应区的温度攀升速率,并使推进剂的燃速更高。To investigate the effects of CL-20 particle size on the combustion performances of solid propellants,the GAP/AP/Al propellants containing different particle sizes(14μm,115μm)of CL-20 were prepared by slurry cast technique.The burning rates at different pressures were determined by the strand burner and the pressure exponents were calculated.By using the micro-thermocouple and high-resolution flame photo systems,the combustion mechanism of solid propellants with different particle sizes of CL-20 was studied.The results show that the burning rates of GAP/AP/Al propellant containing 115μm CL-20 increase by 7%-37%in comparison with those of the propellant with 14μm CL-20 at the pressure range of 7-18MPa.On the other hand,the pressure exponent of the propellant with 115μm CL-20 is determined to be 0.52,and 0.46 for the sample with 14μm CL-20 at 2-10MPa.The coarse CL-20 is partially decomposed earlier than the fine CL-20,the decomposition products not only catalyze the self-decomposition reaction,but also promote the decomposition of AP,increasing the temperature rise rate of the condensed phase reaction,and increasing the burning rate of the propellant with 115μm CL-20.

关 键 词：物理化学 CL-20粒度 高能推进剂 燃速 燃烧机理 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]