固体填充剂对推进剂力学性能的影响

借助扫描电子显微镜（SEM）及微型动态拉伸装置测试手段，对含固体颗粒填充剂的丁羟复合固体推进剂（HTPB）和硝酸酯增塑的聚醚高能推进剂（NEPE）中的微相结构进行了断口微观形貌观察和推进剂拉伸试件在拉应力作用下的断裂过程分析。结果表明，固体颗粒的形状，粒径尺寸，粒度分布和级配变化，以及固体填料／粘合剂的界面性质等因素对推进剂力学性能有着重要的影响。

Effect of solid filler on mechanical properties of pro pellants

By means of SEM and micro dynamic tensile instrument,the microscopic fracture cross section patterns of HTPB and NEPE propellants with the solid particle filler were observed,and the fracture process of midget tensile sample at strain state was analyzed.The results show that solid particle shape and size,particle size distribution,particle configuration ratio variation,characteristics of the interface between binder and solid particles,etc.have important effect on the mechanical properties of the propellants.