含CL-20的NEPE推进剂高压热分解特征量与燃速的关联

用高压差示扫描量热仪(PDSC)对常压(0.1MPa)及高压条件(2,4,6,8MPa)下含CL-20的NEPE推进剂的热分解特性进行研究,指出催化剂能够引起推进剂分解峰温和放热量的变化,且这种变化因压力的不同而不同.将燃速与热分解速率和压力的平方根用一线性方程相关联,得到了含CL-20的NEPE推进剂以热分解特征量表征的燃速关系式,并获得了燃速与PDSC特征量相关因子(kr),kr可以反映出催化剂对推进剂燃速的调节作用.

Relationship between the Characteristic Value of PDSC and Burning Rate of NEPE Propellant Containing CL-20

Thermal decomposition of NEPE propellant containing hexanitrohexaazaisowurtzitane (CL-20) at ambient pressure (0.1 MPa) and high pressure (2, 4, 6, 8 MPa) was researched with pressure differential scanning calormetry(PDSC). The results show that the temperature and heat of thermal decomposition are changed according to adding catalysts. The variation change with pressure. The PDSC characteristic values,which are the square roots of heat release rate and pressure on PDSC tests, can be correlate to burning rate of NEPE propellant containing CL-20 using a linear equation. k_r, correlation factor of burning rate with PDSC characteristic value was given. k_r can be used to analyze the influence of burning catalysts on burning rate of CL-20-NEPE propellant.