乙二胺-三乙烯二胺高氯酸盐对高能发射药热分解反应的影响

Effect of Ethylenediamine Triethylenediamine Perchlorate on Thermal Decomposition Reaction of High Energy Gun Propellant

为了研制一种具有高能高燃速特性的新型发射药,在含有CL-20的高能发射药配方基础上,添加适量高燃速功能材料乙二胺-三乙烯二胺高氯酸盐(SY);利用热重分析法(TG)、差示扫描量热法(DSC)和绝热加速量热仪(ARC)研究了高燃速功能材料SY对高能发射药热分解反应的影响,并计算对比了热分解过程的相关动力学参数。结果表明,高燃速功能材料SY可以明显加快发射药的质量损失速率,使最大质量损失速率提高了43%,主要促进了NC组分的热分解;添加质量分数3%的SY可使高能发射药的绝热分解终止温度由790.4提高到1305.7℃,提高了515.3℃,且最终放热量由1294.72增至2335.22J/g,增加了1040.50J/g,热分解反应更完全;SY的加入降低了高能发射药热分解反应的表观活化能,利用Kissinger法和Ozawa法求得的活化能分别降低40.5和38.5kJ/mol。

In order to research and develop a new type of gun propellant with high energy and high burning rate characteristics,an appropriate amount of high burning rate functional material ethylenediamine triethylenediamine perchlorate(SY)was added in the high energy gun propellant formulation containing CL-20.Thermogravimetric analysis(TG),differential scanning calorimetry(DSC)and accelerating rate calorimeter(ARC)were used to study the effect of SY on the thermal decomposition reaction of the high energy propellant.Meanwhile,the relevant kinetic parameters of the thermal decomposition process were also calculated and discussed.The results show that the SY significantly accelerated the mass loss rate of the gun propellant.The maximum mass loss rate was increased by 43%,resulting from the promoted thermal decomposition of NC component.The adiabatic decomposition termination temperature of gun propellant with 3%SY increased from 790.4 to 1305.7℃,with an increase of 515.3℃.The final exotherm was increased from 1492.72 to 2335.22J/g,with an increase of 1040.50J/g.The addition of SY promoted the thermal decomposition reaction more completely.The results of calculated activation energy by Kissinger and Ozawa method were reduced by 40.5 and 38.5kJ/mol respectively.