Study on High Calorific Value and Low Thermal Shock Heating Agent for Thermal Battery
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摘要:为研发高热值、低热冲击的热电池加热剂，对不同类型活性铁粉的微观形貌、粒度分布、比表面积等进行表征分析，并对不同配方加热剂的成形性、可燃性、热值和燃烧温度等进行了测试。研究结果表明：活性铁粉的微观形貌和特性对加热剂的成形性和可燃性影响较大，珊瑚簇状的活性铁粉制备的加热剂成形性和可燃性最好，制备成的高热值加热剂燃烧时热冲击较小；同时，通过提高高氯酸钾的占比或在其中加入一定量的铝粉，可在热冲击无明显增大的情况下，大幅提高加热剂的热值。本研究有望为高比能量热电池产品的设计开发提供重要参考和指导意义。
Abstract:In order to develop heating agents for thermal batteries with high calorific value and low thermal shock, the microstructure, particle size distribution, specific surface area, etc. of different types of active iron powder were characterized and analyzed, and the formability, flammability, calorific value, and combustion temperature of different formulations of heating agents were tested. The results indicate that the microstructure and characteristics of active iron powder have a significant impact on the formability and flammability of heating agents. Coral cluster shaped active iron powder produces the best formability and flammability of heating agents, while the prepared high calorific value heating agent has less thermal shock during combustion. Meanwhile, increasing the proportion of potassium perchlorate or adding a certain amount of aluminum powder, it is possible to significantly increase the heating value of the heating agent without significant increase of thermal shock. The study is expected to provide important reference and guidance for the design and development of high specific energy thermal battery products.
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