含不同钾盐消焰剂的NC/TMETN推进剂熄火表面特征研究

The Study on the Quenched Surface Characteristics of NC/TMETN Propellant with Potassium Salt

利用扫描电镜 (SEM)和能谱仪研究了含不同钾盐的 NC/TMETN推进剂熄火表面特征 ,研究结果表明 ,有机钾盐 KD使推进剂熄火表面上 Cu元素的含量降低 ,导致 Pb和 Cu的复合催化作用减弱 ;而 KNO3 使推进剂熄火表面碳含量降低 ,铅球尺寸增大 ,导致催化活性组分减少 ,催化作用减弱 ;K3 Al F6与铅的氧化物在推进剂熄火表面形成了 Pb F4,从而完全破坏了铅化物的催化作用。

The quenched surface characteristics of NC/TMETN propellant with potassium salts were investigated by the scanning electron microscopy (SEM) and the LINK ISIS energy spectrum. The results showed that Cu content on the quenched surface reduced because of KD added into the NC/TMETN composition, which weak ened the cooperation between Pb and Cu. While the carbon content on the quenched surface depressed and the size of Pb ball increaied due to KNO 3, which lead the active materials to decrease and the catalysis to weaken. Because K 3AlF 6 reacted with the oxide of Pb to form PbF 4,the catalysis of Pb compound was destroyed completely.