RDX-CMDB推进剂的催化热分解Ⅰ.高压热分解与燃速相关性研究  

Catalytic Decomposition of RDX-CMDBⅠ.Thermal Decomposition at High Pressure and its Correlation with Burning Rate

作　　者：谢明召[1] 刘子如[1] 衡淑云[1] 王晗[1] 张腊莹[1] 赵凤起[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《含能材料》2008年第4期364-367,375,共5页Chinese Journal of Energetic Materials

摘　　要：用高压差示扫描量热仪（PDSC）研究了一种RDX-CMDB推进剂在所选用燃速催化剂（没食子高铅、对氨基苯甲酸铜和炭黑）作用下的热分解，并对比了纳米和非纳米催化剂对其热分解的影响。结果表明，压力和不同复合组成的燃速催化剂对PDSC特征量和RDX的相对放热量有影响；在14MPa压力范围内PDSC的特征量和压力可用一经验方程，通过二元回归与燃速关联。该方程能得到表征压力（压强）和放热速度对燃速的贡献程度的参数，能反映较高压力（8-14MPa）下推进剂燃速的平台效应和不同复合组成的燃速催化剂的影响。The thermal decomposition of RDX-CMDB propellants with burning rate catalysts [ lead-gallate （GDPB）, Cu （ Ⅱ ）-paminobenzoic acid （PAC） and carbon black （CB）] was investigated by pressure differential scanning calorimetry （PDSC）. The effect of nano and un-nano catalysts on its thermal decomposition was compared. Results show that the pressure and the burning rate catalysts with different components affect the characteristic values of PDSC and the relative releasing heat of RDX. The characteristic values of PDSC（ ≤14 MPa）and pressure can be correlated to burning rate using an empiric equation by binary regression. The equation includes parameters that show the contributions of pressure and exothermic rate to burning rate, At high pressures （8 - 14 MPa）, the plateau effect of propellants and the effect of composite catalysts with different components on burning rate can be described by this equation too.

关 键 词：物理化学 高压差示扫描量热仪(PDSC) 热分解 燃速 RDX—CMDB推进剂 燃速催化剂 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程] V512.2