黑索今含量对BAMO-AMMO基推进剂力学性能的影响

采用单轴拉伸实验考察了不同含量黑索今（RDX）固体填料对BAMO（聚双叠氮甲基-氧杂环丁烷）-AMMO（聚叠氮甲基-甲基氧杂环丁烷）基推进剂的拉伸力学性能影响。实验结果表明，随着RDX含量的增加，推进剂拉伸强度增加，延伸率减小，在含量为75%~85%时呈现平台效应。采用动态热机械分析（DMA）考察了不同固体填料含量BAMO-AMMO基推进剂的动态力学性能，分析了固体填料含量影响的机理。DMA分析结果表明，推进剂的玻璃化转变温度随RDX含量的变化规律与延生率变化规律一致，RDX含量增加，延伸率增大，玻璃化转变温度升高，损耗角正切值增大。

Effect of RDX Content on Mechanical Properties of BAMO-AMMO Base Propellants

The mechanical properties of BAMO-AMMO base propellants with various amounts of RDX are characterized by using monaxial tensile test. The results show that the tensile stress of BAMO-AMMO base propellants increases and the tensile elongation decreases when the RDX content increases from 70% to 90%, but the change from 75% to 85% is inconspicuous. The effect of the RDX content on mechanical properties of BAMO-AMMO base propellants is analyzed by dynamic mechanical analyzer(DMA).The analysis result of DMA shows that the change rule of glass-transition temperature with RDX content is the same as that of tensile elongation. The elongation increases, the glass-transition temperature rises and the loss tangent (tan δ) enlarges with the increase in RDX content.