Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure
In order to satisfy the performance requirements of the pyrotechnic ignition composition of a space mission under an extreme thermal environment, it is necessary to analyze and verify the thermal stability of magnesium/tellurium dioxide (Mg/TeO<sub>2</sub>) ignition composition at a temp...
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MDPI AG
2020-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/22/8122 |
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| author | Xiang He Yaokun Ye Nan Yan Feng Ding Chaozhen Li Zhixing Lv Jinhong Huang |
| author_facet | Xiang He Yaokun Ye Nan Yan Feng Ding Chaozhen Li Zhixing Lv Jinhong Huang |
| author_sort | Xiang He |
| collection | DOAJ |
| description | In order to satisfy the performance requirements of the pyrotechnic ignition composition of a space mission under an extreme thermal environment, it is necessary to analyze and verify the thermal stability of magnesium/tellurium dioxide (Mg/TeO<sub>2</sub>) ignition composition at a temperature of 180 °C. The thermal stability of the ignition composition of Mg/TeO<sub>2</sub> and its components after exposure to 180 °C for 2–10 days was studied by means of apparent morphology analysis, differential scanning calorimetry (DSC), X-ray diffraction (XRD), content change analysis, and the <i>P</i>-<i>t</i> curve test. The results showed that after exposure to 180 °C for 2–10 days, no obvious changes, such as ruptures, expansion, or shrinkage, were found by optical microscope, and no changes in morphology and surface details were found by scanning electron microscope (SEM). XRD showed that no other new substance was found in the mixture except magnesium hydroxide (Mg (OH)<sub>2</sub>). DSC showed that the main reaction peak temperature of the ignition composition of Mg/TeO<sub>2</sub> was after 500 °C and that no endothermic/exothermic reaction occurred before 380 °C. The exothermic pre-reaction took place at 381 °C to 470 °C, the weight loss ratio was within 0.71%, the content of the magnesium component varied from 0.49% to 0.90%, the peak pressure attenuation of the ignition composition of 360-mesh Mg/TeO<sub>2</sub> was 8.07%, and the pressure rise time was basically unchanged. The results showed that the ignition composition of Mg/TeO<sub>2</sub> had good thermal stability after exposure to 180 °C temperatures. |
| first_indexed | 2024-03-10T14:49:14Z |
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| language | English |
| last_indexed | 2024-03-10T14:49:14Z |
| publishDate | 2020-11-01 |
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| series | Applied Sciences |
| spelling | doaj.art-d6a2039a6a1b4992a464d4052b95a5c02023-11-20T21:10:50ZengMDPI AGApplied Sciences2076-34172020-11-011022812210.3390/app10228122Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C ExposureXiang He0Yaokun Ye1Nan Yan2Feng Ding3Chaozhen Li4Zhixing Lv5Jinhong Huang6State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, ChinaChina Electronic Technology Group Corporation, Academy of Opto-Electronic, Tianjin 300308, ChinaSafety Technology Research Institute, Beijing 100053, ChinaR & D Center, Liaoning North Huafeng Special Chemistry Co. Ltd., Fushun 113003, ChinaIn order to satisfy the performance requirements of the pyrotechnic ignition composition of a space mission under an extreme thermal environment, it is necessary to analyze and verify the thermal stability of magnesium/tellurium dioxide (Mg/TeO<sub>2</sub>) ignition composition at a temperature of 180 °C. The thermal stability of the ignition composition of Mg/TeO<sub>2</sub> and its components after exposure to 180 °C for 2–10 days was studied by means of apparent morphology analysis, differential scanning calorimetry (DSC), X-ray diffraction (XRD), content change analysis, and the <i>P</i>-<i>t</i> curve test. The results showed that after exposure to 180 °C for 2–10 days, no obvious changes, such as ruptures, expansion, or shrinkage, were found by optical microscope, and no changes in morphology and surface details were found by scanning electron microscope (SEM). XRD showed that no other new substance was found in the mixture except magnesium hydroxide (Mg (OH)<sub>2</sub>). DSC showed that the main reaction peak temperature of the ignition composition of Mg/TeO<sub>2</sub> was after 500 °C and that no endothermic/exothermic reaction occurred before 380 °C. The exothermic pre-reaction took place at 381 °C to 470 °C, the weight loss ratio was within 0.71%, the content of the magnesium component varied from 0.49% to 0.90%, the peak pressure attenuation of the ignition composition of 360-mesh Mg/TeO<sub>2</sub> was 8.07%, and the pressure rise time was basically unchanged. The results showed that the ignition composition of Mg/TeO<sub>2</sub> had good thermal stability after exposure to 180 °C temperatures.https://www.mdpi.com/2076-3417/10/22/8122180°Cthermal stabilityapparent morphologyXRDDSCcontent change |
| spellingShingle | Xiang He Yaokun Ye Nan Yan Feng Ding Chaozhen Li Zhixing Lv Jinhong Huang Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure Applied Sciences 180°C thermal stability apparent morphology XRD DSC content change |
| title | Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure |
| title_full | Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure |
| title_fullStr | Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure |
| title_full_unstemmed | Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure |
| title_short | Thermal Stability Analysis of the Mg/TeO<sub>2</sub> Ignition Composition after 180 °C Exposure |
| title_sort | thermal stability analysis of the mg teo sub 2 sub ignition composition after 180 °c exposure |
| topic | 180°C thermal stability apparent morphology XRD DSC content change |
| url | https://www.mdpi.com/2076-3417/10/22/8122 |
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