In order to improve the energy performance and mechanical properties of insensitive high-energy propellants, cyclotrimethylenetrinitramine (RDX)-based insensitive high-energy propellant with nitrocellulose (NC) and glycidyl azide polymer-energetic thermoplastic elastomer (GAP-ETPE) blends as the binder was prepared by solvent method. The effects of GAP-ETPE/NC ratio and RDX content on the energy properties of propellants were analyzed by numerical calculations. The effects of GAP-ETPE/NC ratio, RDX particle size and RDX content on the mechanical properties of propellants were studied by compression test, impact test and solid surface properties test. The impact sensitivity and Friction sensitivity of all the propellant compositions were tested. The theoretical calculation results showed that the introduction of GAP-ETPE into propellant significantly decreased the explosion temperature and increased the specific volume. The density, compression strength, and surface energy of the propellant were gradually decreased with increasing the GAP-ETPE/NC ratio, and the impact strength was increased gradually as well. The mechanical properties and surface energy of the propellant were improved greatly when the RDX particles were smaller. The studied propellants showed a linear increase in the propellant force and explosion temperature with increasing the RDX content. However, increasing the RDX content significantly reduced the impact strength and surface energy. Mechanical reinforcement with solid fillers increased the compression strength and propellant density to a certain degree. Compared with the standard propellants SF-3, the prepared propellant composition is insensitive to the impact and friction.</abstract>

为了提高不敏感高能推进剂的能量性能和机械性能，将基于三环三亚甲基三胺（RDX）的不敏感高能推进剂与硝化纤维（NC）和缩水甘油叠氮聚合物高能热塑性弹性体（GAP-ETPE）掺混通过溶剂法制备。通过数值计算分析了GAP-ETPE / NC比和RDX含量对推进剂能量性能的影响。通过压缩试验，冲击试验和固体表面性能试验研究了GAP-ETPE / NC比，RDX粒径和RDX含量对推进剂力学性能的影响。测试了所有推进剂组合物的冲击敏感性和摩擦敏感性。理论计算结果表明，将GAP-ETPE引入推进剂中可显着降低爆炸温度并增加比容。随着GAP-ETPE / NC比值的增加，推进剂的密度，压缩强度和表面能逐渐降低，冲击强度也逐渐提高。当RDX颗粒较小时，推进剂的机械性能和表面能得到了很大的改善。研究的推进剂显示出随着RDX含量的增加，推进力和爆炸温度呈线性增加。但是，增加RDX含量会显着降低冲击强度和表面能。用固体填料进行机械增强在一定程度上提高了压缩强度和推进剂密度。