某型限制性导爆索高温适应性研究

Research on High Temperature Adaptability of Some Confined Detonating Fuse

针对空间飞行器极限高温需求,对当前制式限制性导爆索(CDF)从包覆材料、装药直径及装药工艺3个方面进行了高温适应性验证及研究。结果表明:通过采用高熔点包覆层材料、适度增大导爆索索心直径,以及对初始装药银管进行高温烘烤预处理,可显著提高CDF耐215℃/24h性能,其爆速约7012m/s,满足爆轰能量稳定传递要求。

In response to the extreme high temperature requirements of the spacecraft,the high temperature adaptability of current standard confined detonating fuse(CDF)was studied and verified around three aspects,such as coating material,charge diameter and charge process.The results show that through adopting coating material with high melting point,increasing the diameter of fuse cord moderately,and pre-treating the initial silver tube under high temperature,the adaptability of CDF under 215℃for 24 h can be improved significantly,the detonation velocity is about 7012 m/s,which meet the requirement of stable transmission of detonation energy.