几种光敏推进剂的热分解动力学及气相产物研究

通过热重差热分析法（TG-DTA）测定了不同配方的光敏推进剂的热分解过程，分别获得了不同升温速率下的峰温。根据Kissinger方程,计算了光敏推进剂的表观活化能和指前因子，并分析了不同配方的区别。通过质谱联用分析技术测定了热分解过程的气相产物种类，并使用NASA-CEA计算了不同配方绝热燃烧后的气相产物的质量分数。结果表明,纳米碳粉和酚醛树脂的添加稀释了样品的纯度，使不同配方的表观活化能和指前因子存在差异，热分解升温速率会影响反应平衡程度，升温速率提高，对反应热的释放或吸收起到阻碍作用，光敏推进剂热分解后的70%(质量分数)气相产物为氮气。光敏推进剂的激光点火试验表明:硝酸铵（AN）作为氧化剂的效果最好。

Study on Thermal Degradation Kinetics and Gaseous Products of Laser Sensitive Propellants

Processes of thermal decomposition of laser sensitive propellants were analyzed by TG-DTA, and peak-temperatures at different heating rates were obtained. Activation energy and pre-exponential factor of laser sensitive propellants were calculated and governed by the Kissinger Equation and the differences of different formulations were analyzed. The gaseous products of thermal decomposition were measured by mass-spectrometric, and the mass fraction of gaseous were calculated by NASA-CEA. The results show that the purity of formula is diluted due to the addition of Nano-C and PF, which may vary the activation energy and pre-exponential. The heating rates can influence the equilibrium of reaction, which means the higher heating rates,the lower the reaction heat.The 70%(mass fraction) of gaseous product is nitrogen.Results from laser ignition experiment show that laser sensitive propellant containing AN performs as a superior oxidant.