某火工品贮存老化效应分析研究

Study on the Aging Effect of a Detonator

在恒定温度、相对湿度(60℃、95%和71℃、95%)的双因素和恒定温度(71℃)的单因素条件下,对某火工品在加速寿命试验后各个不同时间的性能变化情况进行了研究。研究结果表明,该火工品电阻在加速老化试验过程中未发生显著性变化,但其单发作用时间、质量以及药剂的撞击感度都发生了显著性变化。在71℃、95%的加速老化试验条件下加速老化14天,其单发作用时间超出了设计技术指标,表现为不合格;同时随着老化时间的延长,该火工品质量损失量也增加,药剂撞击感度也不断提高。

The properties of a detonator were studied by accelerated life test at the conditions of temperature 60 ℃ and 71 ℃, relative humidity 95%. Results show that the changes ocurr on the single function time, mass and the impact sensitivity of inner charge of the detonator,while the resistances have no significant change. The single function time was unqualified when the samples were aged at the condition of temperature 71 ℃, relative humidity 95% for 14 days. The tested sample＇s mass was lost more and more and the impact sensitivity of inner charge became more sensitive when the aging time continued.