无硫黑火药的热分解动力学研究  

Thermal Kinetics of Sulphur-free Black Powder

作　　者：俞进阳[1] 陈利平[1] 姜夕博[1] 彭金华[1] 

机构地区：[1]南京理工大学化工学院安全工程系,江苏南京210094

出　　处：《含能材料》2011年第6期646-649,共4页Chinese Journal of Energetic Materials

基　　金：国家科技支撑计划课题基金资助(2008BAK40B01)

摘　　要：用差示扫描量热仪,在四种升温速率下,测定了KNO3/C=65/30,KNO3/C=75/15两种组分配比的无硫型黑火药的DSC曲线,并与普通黑火药的热分解数据与热行为进行了对比。在实验结果对比分析的基础上,运用Kissinger、Ozawa和atava-esták方程求解了黑火药发生热分解时的活化能和指前因子。结果表明:无硫黑火药与普通黑火药相比,起始分解温度降低,放热值降低,其中含碳量较低的黑火药,无硫黑火药活化能升高,机械感度也较低。Thermal analysis curves of two proportions of sulphur-free black powders were measured by differential scanning calorimetry（DSC） at heating rates of 2,5,10,20 ℃·min-1.The data and thermal behaviors were contracted between sulphur-free black powder and ordinary black powder.On the base of experiment data,activation energy and pre-exponential factor of black powder were calculated according to Kissinger′s equation,Ozawa′s equation and atava-esták′s equation.Results indicate that the initial exothermic temperature,heat release and mechanical sensitivity of sulphur-free black powder are lower than these of ordinary one when active energy is higher.

关 键 词：物理化学 黑火药 热分解 差示扫描量热法(DSC) 活化能 

分 类 号：TQ560.1[化学工程—炸药化工]