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| Analysis and Evaluation of Storage Life of Semiconductor Bridge Ignition Agent |
| Received:November 29, 2021 Revised:December 29, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.02.003 |
| KeyWord:semiconductor bridge accelerated life pyrotechnic agent agent compatibility chemical kinetic analysis |
| Author | Institution |
| YE Dan-dan |
Nanjing University of Science and Technology, Nanjing , China |
| AN Gang |
China National University of Defense Technology, Changsha , China |
| WANG Lei |
Nanjing University of Science and Technology, Nanjing , China |
| YE Shu-qin |
Xi’an Qinghua Company, Xi’an , China |
| ZHOU Bin |
Nanjing University of Science and Technology, Nanjing , China |
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| Abstract: |
| 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. |
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