高固含量改性双基推进剂的热分解

摘要

采用高压DSC方法研究了不同固含量(RDX含量)推进剂的热行为.结果表明,随着RDX含量的增加,GLX推进剂中双基组分的分解峰逐渐变小,峰温前移,而RDX的分解峰随含量的增加而变强；随着压力的增大,GLX推进剂中两个放热分解峰的DSC峰温均有不同程度的下降,GLX推进剂的放热量也明显提高,放热分解峰变得更加明显,两峰温下降的幅度均与试验压力存在线性关系.%The thermal decomposition of composite modified double-base propellants with different RDX content were studied by means of high pressure differential scanning calorimetry(PDSC). It was shown that the intensity of the exothermic peaks of the double-base components in GLX propellant decreased with the increase of RDX content, and the peak temperature shifted forward. However, the intensity of the exothermic peak of RDX increased in this way. Besides, with the pressure increased, these two exothermic peak temperatures of GLX propellants decreased at different degree while the quantity of heat release increased apparently. Moreover, in this process, the exothermic peak became sharper and the decrease of peak temperature in extent was dependent linearly on the ambient pressure.