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采用X射线光电子能谱(XPS)中先进的线扫描技术分析表征了某含聚氨酯(PU)涂层的高能固体推进剂在不同层间界面上的元素组成分布和含量变化。结果表明,随线扫描点从推进剂向PU涂层推进,元素Si含量呈上下波动趋势,Cl和Pb含量逐渐下降,且存在一定程度的组分迁移。元素过渡点C1s、N1s峰的分峰拟合得出推进剂和聚氨酯涂层的2种不同组分中C1s、N1s特征峰各自不同的结合能,从而可定性区分推进剂组成随扫描点的变化情况。
The elemental composition distribution and content change of high energy solid propellant containing polyurethane (PU) coating at different interlayer interfaces were characterized by advanced line scanning technology in X-ray photoelectron spectroscopy (XPS). The results show that with the scanning line progresses from the propellant to the PU coating, the elemental Si content tends to fluctuate up and down, and the content of Cl and Pb decreases gradually, and there is a certain degree of component migration. The sub-peak fitting of the C1s and N1s peaks of the element transition points leads to the different binding energies of the C1s and N1s characteristic peaks in the two different components of the propellant and the polyurethane coating, respectively, so as to qualitatively distinguish the change of the propellant composition with the scanning point Happening.