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对铝含量较低的AP复合推进剂燃速进行测试,外加2%的n Ni或4/1的n Al/g Al级配均可提高低压下燃速和降低燃速压强指数,改善推进剂的燃烧性能,而采用1/1的n Al/g Al级配则降低推进剂的燃烧性能。通过对推进剂样品的能量特性、火焰结构、燃烧残渣的观测以及热分析(TG和DTA实验),n Al与n Ni在燃烧中有不同于g Al的行为。具有较低的点火阈值和较短的燃烧时间,同时n Al倾向于单颗粒燃烧,有别于g Al的凝聚燃烧行为;n Ni则催化了复合推进剂中主要组分AP的热分解,多种因素共同作用促进了推进剂的燃烧。
The burning rate of AP composite propellants with low content of aluminum can be improved by adding 2% n Ni or 4/1 n Al / g Al grading to improve the burning rate under low pressure and reduce the burning rate pressure index, The combustion performance of the propellants is reduced by the 1/1 n Al / g Al fraction. The behavior of n Al and n Ni in combustion differs from that of g Al by the energy characteristics of the propellant samples, the flame structure, the observation of combustion residues, and the thermal analysis (TG and DTA experiments). Has a lower ignition threshold and a shorter burning time, while n Al tends to single-particle combustion, which is different from the agglomeration combustion behavior of g Al. N Ni catalyzes the thermal decomposition of AP, the main component of the composite propellant The combination of factors contributes to the combustion of the propellant.