可燃药筒吸水性研究

Study of Moisture Absorption of Combustible Cartridge Case

采用称量法研究了某卷制结构可燃药筒干燥脱水特性和吸水特性,筒壁材料的干燥失水率与干燥时间的关系,平衡吸水量与环境湿度的关系以及试样厚度对吸水速率的影响。结果表明,可燃药筒筒壁在烘干条件下失水达到恒定的时间以及在常温潮湿环境下达到湿度平衡的时间随试样厚度的增加而延长;在潮湿环境中的平衡吸水量随环境的相对湿度增加而增加,在环境相对湿度为90%左右时,水分的含量接近4%(质量分数,全文同);相对于发射药具有较强干燥脱水特性和吸水特性,可燃药筒厚度是影响吸水速率的重要因素。

The desiccation features and hygroscopic properties of rolled combustible cartridge case were studied by weighing method.The relationship between drying rate and drying time,moisture absorption rate and humidification of time,the equilibrium moisture content and environmental humidity was analyzed.The results showed that the time to reach constant weight of the sample in dry and wet conditions at room temperature prolonged with thickness increased;the higher the relative humidity,the greater the equilibrium moisture content of the cylinder wall.When the relative humidity was about 90%,its absorption rate was closed to 4%.Compared with its inner propellants,has much stronger dehydration properties and moisture absorption properties.Thickness is the important factor influencing moisture absorption velocity of the combustible cartridge case.