Nano-aluminum powder has the advantages of fast burning rate, high combustion efficiency, complete combustion and no agglomeration and agglomeration during the combustion process. As a metal additive for solid propellants, it can significantly increase its specific impulse, reduce pressure index and characteristic signals. However, due to its large specific surface area and high specific surface energy, nano-aluminum powder is prone to oxidation and even spontaneous combustion. Phase change energy storage materials can absorb or release a large amount of heat during the phase change process, can solve the problem of energy supply and demand mismatch in time or space, and achieve the effect of temperature control and energy storage. Based on the above background, the research content of this article is the performance research of nano-aluminum powder composite phase change energy storage materials. In order to be able to prepare nano-aluminum powder with appropriate particle size by DC arc hydrogen plasma method, the cathode current and inert gas pressure are explored. The effects of other process parameters on the yield and particle size of nano-aluminum powder were analyzed, and the effect mechanism was analyzed. Finally, through experimental simulation, the results show that the nano-aluminum powder begins to oxidize at about 520 ° C, which is 500 ° C lower than the micro-aluminum powder's oxidation temperature at 1000 ° C, which indicates that the nano-aluminum powder has a low oxidation activation energy, which may be related to Nano-aluminum powder is related to the release of additional energy storage.

Imran A. Khan. Properties of Nano-Aluminum Powder Composite Phase Change Energy Storage Materials. Academic Journal of Energy (2020), Vol. 1, Issue 4: 13-25. https://doi.org/10.38007/RE.2020.010402.

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