硅系延期药贮存与硅粉表面稳定性研究

通过对硅系延期药贮存规律的分析，并利用ESCA对不同条件下的硅粉表面氧化膜进行研究，得出了硅系延期药贮存秒量漂移的根本原因是延期药中的可燃剂与氧化剂在贮存过程中生成氧化膜，使延期时间增长。通过调整硅粉研磨时间，提高了延期药延期精度，采取高温加速老化延期药方法，促使可燃剂与氧化剂接触界面扩散动态平衡，提高了硅系延期药延期精度与贮存稳定性。

Study on the Stability of Keeping Silicon Type Delay Composition in Storage and of Silicon Powder Surface

By analyzing the storage rules of silicon type delay composition and characterizing the surface oxidation film of silicon powder under different conditions by Electron Spectroscopy for Chemical Analysis(ESCA),it was concluded that the ultimate reason for the drift of delay time of this composition was the generation of oxidation film between the combustible agent and the oxidation agent during the course of storage,and the delay time was prolonged. By increasing the grind time of silicon powder,the delay precision of this composition was improved. With the method of high temperature accelerated aging,the diffusing dynamic balance of interface between the combustible agent and the oxidation agent achieved,then the delay precision and the storage stability of this composition enhanced.