摘要
采用动态热机械分析仪(DMA)测定了老化后NEPE推进剂的动态力学性能,表征了其在75℃下的热老化特性。结果显示,NEPE推进剂的损耗因子温度谱曲线在低温段只存在一个单峰(玻璃化转变峰),损耗因子tanδ的峰值随老化时间和测试频率的增加而增大,且峰温上升;增塑剂含量对tanδ峰值的影响因贮存条件而异,密封贮存老化条件下tanδ峰值随增塑剂含量的减少而增大。
The dynamic mechanical properties of NEPE propellant aged for various times at 75 ℃ were measured by dynamic mechanical analysis（DMA）. Results show that in the low temperature region, a single relaxation is observed in tanS-temperature curves, which is glass transition relaxation. The peak value of tanδ and temperature increase with the increase of aging time and test frequency. The effect of the plasticizer contents on tanB varies with storage aging condition. In seal condition, the tanδ value decreases with the plasticizer content reduction.
出处
《含能材料》
EI
CAS
CSCD
2008年第4期462-464,468,共4页
Chinese Journal of Energetic Materials
基金
国家安全重大基础研究项目(61338)
国家教育部新世纪人才计划资助
关键词
材料力学
固体推进剂
NEPE推进剂
老化
动态力学性能
损耗因子
materials mechanics
solid propellant
NEPE propellant
aging
dynamic mechanical property
loss coefficient
