电点火头药剂贮存失效的组分分析

Composition Analysis on Deterioration of Electric Match Charge in Storage

采用X-射线衍射实验,分析了电点火头在非密封加速寿命试验后各个时间点上药剂组分的变化情况。加速寿命试验温度为(60±2)℃、相对湿度为95％±3％。结果表明:该点火头药剂受潮易变质发生反应,加速寿命试验1.5天后,药剂成分基本没有发生变化;加速寿命试验3天后,Pb(SCN)2的衍射峰强度有所减弱,但没有发现新的物质;加速寿命试验6天后,药剂成分完全发生变化,变成其它新的物质;加速寿命试验9天后,点火头药剂成分除了具有与6天相同的一些物质特征峰外,还发现了PbSO4的特征峰,对药剂中的绿色生成物进行分析,确定该物质为Cr2O3。

The changes of the electric match composition at different time simulating accelerated life test were analysed by X-ray diffraction. The conditions of the life test were temperature (60±2)℃ ,relative humidity 95%±3%. It was found from the test that when high humidity and high temperature atmosphere exist,the electric match composition would deteriorate easily. Results show that the composition is not changed after the life test proceeds 1. 5 days, but the relative peak value of Pb( SCN) 2 become weaken after 3 days. Any of its original material could not be found from X-ray spectrogram after 6 days. The characteristic peaks were observed after 9 days lifetest, like after 6 days life test. Furthermore, PbSO4 diffraction peak and green material Cr2O3 were also found when 9 days.