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NEPE推进剂的失效机理可为某新型发动机设计和寿命预估提供理论支持.为深入研究该推进剂在湿热环境中的力学性能变化,进行了高温湿加速老化试验,并借助双因素方差分析方法考查温、湿度对最大抗拉强度(σm)的影响程度.结果表明高温湿环境使NEPE推进剂的σm急剧减小;温、湿度对σm有显著影响;温、湿度耦合在老化前期对σm有明显影响,在老化后期作用变弱对σm没有显著影响.
The failure mechanism of NEPE propellant can provide theoretical support for the design of a new type of engine and life prediction.In order to further study the mechanical properties of the propellant in hot and humid environment, accelerated aging accelerated test was carried out, and two-way ANOVA The effect of temperature and humidity on the maximum tensile strength (σm) was investigated.The results showed that the σm of NEPE propellant decreased sharply under high temperature and humidity conditions, while the temperature and humidity had a significant effect on σm. Significantly affected, weaker effects on σm during late aging did not have a significant effect.