Abstract To evaluate the reactive energy release of the Al/Polytetrafluoroethylene (PTFE) mixed powder (Al and PTFE with a mass percentage of 26.5%/73.5%). Based on the traditional formula, three kinds of Al/PTFE test samples with different dosages (4, 6.5, and 9 g) were mixed. By using the self-designed airtight container, and combining with the overpressure sensor, the transient optical fiber pyrometer, and the infrared thermography. The overpressure , the visible light radiation temperature in the closed container, and the infrared light radiant temperature of the container’s outer wall have been obtained by real-time measurements during the process of cooking off, and the reaction products are analyzed by X-ray energy spectrum (EDS) and X- ray diffraction (XRD). The experimental results show that most of the solid products of Al/PTFE powder in the closed container are AlF3 and a small number of intermediate carbon compositions. The released energy during the firing process of the active material Al/PTFE increases with the increase of the mixing amount; The bake-off energy of active material Al/PTFE mixture per unit mass in a closed container is about 10.2 kJ/g, and when the oxygen content in the closed container is sufficient, active material Al/PTFE per unit mass releases more energy.

中文翻译：

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密闭容器中Al/PTFE混合粉体的蒸煮能量释放实验研究

摘要 评价Al/聚四氟乙烯(PTFE)混合粉末(Al和PTFE的质量百分比为26.5%/73.5%)的反应能释放。在传统配方的基础上，混合了三种不同剂量（4、6.5和9 g）的Al/PTFE测试样品。采用自行设计的密闭容器，结合超压传感器、瞬态光纤高温计、红外热像仪。在蒸煮过程中实时测量获得密闭容器内的超压、可见光辐射温度和容器外壁的红外光辐射温度，并通过X射线能量分析反应产物光谱 (EDS) 和 X 射线衍射 (XRD)。实验结果表明，密闭容器中Al/PTFE粉末的固体产物大部分为AlF3和少量中间碳成分。活性物质Al/PTFE在烧成过程中释放的能量随着混合量的增加而增加；密闭容器中每单位质量的活性材料Al/PTFE混合物的烘烤能量约为10.2kJ/g，当密闭容器中的氧含量足够时，每单位质量的活性材料Al/PTFE释放出更多的能量。