CAJ | 학술논문

目的：考查某推进剂在-10℃和-28℃这两个温度下性能随老化时间的变化趋势。方法采用低温加速老化试验。结果在低温下老化推进剂最大抗拉强度先下降然后逐渐升高，伸长率变化趋势较为复杂。常温正常拉伸速度条件下伸长率基本在初始值附近波动，低温快速拉伸条件下伸长率直线下降。结论低温下推进剂老化力学性能的变化趋势与高温老化不尽相同，造成这种差异的原因可能是老化机理不同所致。
목적：고사모추진제재-10℃화-28℃저량개온도하성능수노화시간적변화추세。방법채용저온가속노화시험。결과재저온하노화추진제최대항랍강도선하강연후축점승고，신장솔변화추세교위복잡。상온정상랍신속도조건하신장솔기본재초시치부근파동，저온쾌속랍신조건하신장솔직선하강。결론저온하추진제노화역학성능적변화추세여고온노화불진상동，조성저충차이적원인가능시노화궤리불동소치。
Objective To study the characteristic changing trends of a propellant at -10 ℃ and -28 ℃ . Methods Low-temperature accelerated aging test method was used. Results At low temperature, the maximum tensile strength of the aging propellant first decreased and then gradually increased. The changing trend of elongation rate was quite complicated. At room temperature and normal tensile speed, the elongation rate fluctuated around the initial value, while at low temperature and rapid tensile, the elongation rate showed linear decrease. Conclusion The changing trends of mechanical properties seemed different during aging at low or high temperature, the cause of which might be the different aging mechanism.