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为研究高固体含量水反应金属燃料推进剂力学性能的影响因素,运用单向压缩方法和针入度测试,研究了不同工艺参数对铝镁水反应金属燃料推进剂在常温下的力学影响.实验结果表明,工艺参数对推进剂体系中黏合剂网络结构的形成及向表面的迁移是造成体系力学性能改变的主要原因;水反应金属燃料推进剂压缩性能和硬度随固化参数和保压时间增加而增大,R值从0.9~1.0以上时,保压时间从5~25min,其力学性能增幅较快,预固化3h力学性能最好.模压力增大造成体系中黏合剂组分向表面迁移加剧,力学性能随模压力增大而降低.
In order to study the influencing factors of the mechanical properties of high solid content water-reactive metal-fuel propellants, uniaxial compression method and penetration test were used to study the mechanical effects of different process parameters on the reaction of metal-magnesium propellants at room temperature. The results show that the formation of the binder network structure and the migration to the surface of the binder in the propellant system are the main reasons for the change of the mechanical properties of the system. The compressibility and hardness of water-reactive metal-fuel propellants increase with the curing parameters and dwell time Increases, the R value from 0.9 to 1.0 or more, the dwell time from 5 ~ 25min, its mechanical properties increased rapidly, the mechanical properties of the pre-curing 3h best.Mould increase the pressure caused by the binder component in the system to migrate to the surface The mechanical properties decrease with the increase of mold pressure.