摘要
该文用热重分析(TGA)技术对各种国产制式火药的热分解作了实验研究。分析了火药热分解的基本特征、热分解转爆燃的临界条件、热分解动力学参数以及升温速率对热分解的影响。试验结果表明:火药缓慢的热分解向爆燃转变的临界温度可作为火药点火的判据。双基药与三基药存在多阶段的反应、火药热分解的临界温度以及化学动力学参数随升温速率增大而增大。该文的试验研究结果提供了火药的点火和燃烧所需的重要信息。
In this paper, the pyrolysis of some kinds of home made propel-lant is studied experimentally with TGA technique. The basic characteristicsand kinetic parameters of propellant pyrolysis,the critical condition of pyroly-sis-to-deflagration transition,and the influence of temperature rising rate onpyrolysis are analyzed. The experimental results show that:the critical temper-ture of pyrolysis-to-deflagration transition of propellants can be used as the ig-nition criterion, the multi-stage reaction appears in the pyrolysis of double-base and triple-base propellants,the critical temperature and the kinetic param-eters will increase as temperature rising rate increases. This experimental studyprovides valuable information for ignition and combustion of propellants.
关键词
火药
热分解
热重分析
发射药
gun propellant
thermal analysis
chemical kinetics
parameter
ignition temperature
test result
