Abstract: The change of mechanical properties of HTPB propellant with mediate burning rate was investigated under 15% constant strain by thermally accelerated aging Storage life of propellant was predicted in both 15% and non strain condition The results show that effect of constant strain on storage life of propellant is great Storage life of propellant under 15% constant strain is shortened than zero strain for four years

Key words: Hydroxy terminated polybutadiene propellant;Accelerated aging test;Storage life;Life prediction

摘要： 采用高温加速老化法,研究了中燃速丁羟推进剂在受力(15%定应变)状态下力学性能变化,预估了推进剂在受力与非受力(0%应变)状态下的贮存寿命。结果表明:定应变的作用对推进剂的贮存寿命影响较大,推进剂在受力状态下的贮存寿命比非受力条件下的贮存寿命缩短了4年左右。

关键词: 端羟基聚丁二烯推进剂;加速老化试验;贮存寿命;寿命预测