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| Safety and Life Prediction of 3,4-Dinitrofurazanfuroxan (DNTF) in the Aging Process |
| Received:January 14, 2022 Revised:January 26, 2022 |
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| DOI：10.7643/issn.1672-9242.2022.02.011 |
| KeyWord:DNTF accelerated aging safety thermal stability mechanical sensitivity life prediction |
| Author | Institution |
| ZHU Yan-long |
Xi'an Modern Chemistry Research Institute, Xi'an China |
| DING Li |
Xi'an Modern Chemistry Research Institute, Xi'an China |
| WANG Hui |
Xi'an Modern Chemistry Research Institute, Xi'an China |
| NING Yan-li |
Xi'an Modern Chemistry Research Institute, Xi'an China |
| ZHOU Yan-shui |
Xi'an Modern Chemistry Research Institute, Xi'an China |
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| Abstract: |
| The safety of 3,4-Dinitrofurazanfuroxan (DNTF) in the aging process was carried out to solve the safety issues of DNTF during use and storage, and to obtain the changing laws and mechanisms of thermal stability and mechanical sensitivity in the aging process, and provide technical guidance for the safe use and storage of DNTF. The thermal stability, mechanical sensitivity changes of DNTF in the aging process were researched though high temperature accelerated aging test, and the mechanism of safety performance changes was studied by Raman spectroscopy and LC-MS spectrometry technology. The Berthlot equation was used for life prediction of DNTF after accelerated aging tests at different temperatures were carried out. The results showed that the characteristic temperature of thermal weight loss of DNTF increased from 195.1 ℃ to 199.0~202.0 ℃, and that the friction sensitivity increased from 60% to 96%, the impact sensitivity from 52% to 84% after aging at 90 ℃ for 115 days, respectively. The half width of the Raman spectrum changed from 6.3709 cm‒1 to 6.1103 cm‒1. The formation of DNTF dimers and tetramers was discovered by liquid chromatography-mass spectrometry in DNTF aged samples with the mass loss of 1%. The service life of DNTF at 25 ℃ was calculated to be 673.5 years using mass loss of 1% as a failure criterion. High temperature accelerated aging could help to improve the thermal stability of DNTF, but lead to the increase in mechanical sensitivity. It was speculated that the improvement of crystal quality of DNTF and the formation of DNTF dimers and tetramers might be the reasons for the increase of mechanical sensitivity. |
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