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含能材料  2013 

绕丝可燃药筒吸湿性及其对燃烧性能的影响

Keywords: 物理化学,绕丝可燃药筒,水分,吸湿性,燃烧性能,密闭爆发器

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Abstract:

为研究环境湿度对可燃药筒定容燃烧特性的影响,用称重法研究了某绕丝型可燃药筒的吸湿特性,对在不同环境湿度下吸湿饱和的药筒试样进行了密闭爆发器实验。结果表明,绕丝可燃药筒具有较强吸湿能力,且随相对湿度增加而增加。当相对湿度为89.0%时,其平衡吸湿量为2.89%。在装填密度为0.20g·cm-3时,随相对湿度增加,药筒燃速大幅降低,燃烧结束时间由2.40ms延长至3.30ms,最大压力由189.75MPa下降到174.32Mpa;火药力由756.62kJ·kg-1下降至649.33kJ·kg-1,余容由1.01L·kg-1上升至1.30L·kg-1。

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