模块硝酸铵发射药的吸湿性能研究

Moisture absorption property of modular AN propellant

为解决硝酸铵发射药的吸湿问题,将硝酸铵发射药颗粒固结压实,用疏水性高分子材料包覆,得到一种新型模块硝酸铵发射药。采用干燥器平衡法,研究压实密度、基药颗粒长径比、硝酸铵含量、高分子包覆材料对该模块药吸湿性的影响。结果表明:压实密度越大、基药颗粒长径比越大、硝酸铵含量越小,模块硝酸铵发射药的吸湿性越小;模块硝酸铵发射药的吸湿性大大降低,远小于单基发射药。

To solve the moisture absorption problem of AN propellant,a new modular AN propellant was manufactured with AN propellant particles being pressed,consolidated and coated with hydrophobic polymer materials.The effects of compaction density,length-diameter ratio of base propellant particles,AN content and polymer coating materials on the moisture absorption property of propellant were studied by using dryer balance method.The results showed that：with increasing of compaction density or L/D of base propellant particles and decreasing of AN content,the moisture absorption property decreased.The moisture absorption property of propellant reduced greatly,so far less than single-base propellant.