半导体桥点火具药剂贮存寿命分析及评估  

Analysis and Evaluation of Storage Life of Semiconductor Bridge Ignition Agent

作　　者：叶丹丹 安刚 王磊[1] 叶淑琴 周彬[1] YE Dan-dan;AN Gang;WANG Lei;YE Shu-qin;ZHOU Bin(Nanjing University of Science and Technology,Nanjing 210018,China;China National University of Defense Technology,Changsha 410072,China;Xi’an Qinghua Company,Xi’an 710025,China)

机构地区：[1]南京理工大学,南京210018 [2]中国国防科技大学,长沙410072 [3]西安庆华公司,西安710025

出　　处：《装备环境工程》2022年第2期14-19,共6页Equipment Environmental Engineering

摘　　要：目的对在贮存过程中的半导体桥火工品进行失效分析和寿命评估。方法通过差示扫描量热法(DSC)对不同加速寿命实验时间的半导体桥点火具药剂进行分析,探究LTNR和亚铁氰化铅的药剂相容性。通过化学动力学,分析半导体桥点火具药剂在不同加速寿命实验时间的活化能。结果 LTNR和亚铁氰化铅均表现出良好的化学相容性,在短时间内不会产生性能变化。在贮存的初期,药剂活化能减小,热分解速率相对较快。随着贮存时间的延长,药剂的活化能恢复初始状态,热分解速率降低。药剂在贮存过程中受温度影响,始终伴随着缓慢分解,使得药剂的有效成分减少,导致药剂的发火时间出现延迟现象。结论半导体桥点火具的失效模式为药剂发火时间延迟,所以采用半导体桥点火具药剂的发火时间作为关键性能参数。采用趋势线分析法评估半导体桥点火具的贮存寿命大约为16a。The reliability of semiconductor bridge igniter during storage affects whether the pyrotechnics can function safely. It is very important for the failure analysis and life evaluation of the semiconductor bridge igniter during storage. Differential scanning calorimetry(DSC) is used to analyze semiconductor bridge igniter agents with different accelerated life test times, it is found that both LTNR and lead ferrocyanide exhibit good chemical compatibility and will not change performance in a short period time. Through chemical kinetic analysis of the activation energy of the semiconductor bridge igniter agent at different accelerated life test times. The activation energy of the medicament decreases in the initial stage of storage, and the thermal decomposition rate of the medicament is relatively fast. With the extension of the storage time, the activation energy of the medicine will return to the initial state, and the thermal decomposition rate of the medicine will decrease. Affected by temperature during the storage process of the medicine, it is always accompanied by slow decomposition, which reduces the effective components of the medicine and causes a delay in the ignition time of the medicine. Because the failure mode of the semiconductor bridge igniter is the delay of the ignition time of the medicament, the ignition time of the medicament of the semiconductor bridge igniter is used as the key performance parameter. The trend line analysis method is used to evaluate the storage life of the semiconductor bridge igniter to be about 16 years.

关 键 词：半导体桥 加速寿命 火工药剂 药剂相容性 化学动力学分析 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程]