组分对双基发射药热化学安定性的影响研究  

Influence of Components on Thermal Stabilities and Thermal Decompositions for Double Base Propellants

作　　者：张冬梅[1] 陆洪林[1] 涂健[1] 贾林[1] 顾妍[1] 杜姣姣[1] 于思龙 王芳芳[1] ZHANG Dongmei;LU Honglin;TU Jian;JIA Lin;GU Yan;DU Jiaojiao;YU Silong;WANG Fangfang(Xi’an Modern Chemistry Research Institute, Xi’an 710065, China)

机构地区：[1]西安近代化学研究所,西安710065

出　　处：《兵器装备工程学报》2019年第4期79-84,共6页Journal of Ordnance Equipment Engineering

摘　　要：用真空安定性试验、甲基紫试验和高压DSC研究了五组双基发射药17个配方的热(化学)安定性和热分解;用Kissinger方程获得了这些双基发射药双基组分或RDX组分分解的动力学参数,计算了"等动力学温度";结果表明,各种组分对双基发射药热(化学)安定性和热分解都有一定的影响,用真空安定性试验、甲基紫试验和热分解动力学参数都能表征组分对安定性的影响;不同体系或不同分解阶段的不同作用机理可能会造成不同方法评价结论的差异;双基发射药双基组分或RDX组分分解的动力学参数,分别都存在"动力学补偿效应",表明双基或RDX组分以及其他组分彼此不能改变双基组分或RDX组分的分解分别属于同一反应过程或速度决定步骤的性质;所有配方分解的"等动力学点(温度)"T_(ik)都在一个很小的温度范围(167. 3～176. 3℃),T_(ik)下限的温度167. 3℃高于120℃,这为只用表观活化能E_a评估较低温度下的安定性提供了依据。The thermal decomposition of five group high energy propellants with RDX were investigated by high pressure DSC test(DSC).The kinetics parameters of doublebase component decomposition and RDX decomposition were gained by Kissinger equation. And the isokinetic temperature point was calculated. The results show that the doublebase component and RDX possess a compensation effect respectively. It shows that the doublebase component, RDX or other couldn’t change the decomposition process each other. And they have the dcomposition process or rate-determining step themselves.The isokinetic temperature point of all formula were in the range 167.3 ℃ to 176.3 ℃.The lower limit temperature 167.3 ℃ is higher than 120 ℃, so that brings about a foudation to evaluate the stability(at low temperature) with the apparent activation energy( Ea ).

关 键 词：物理化学 组分 化学安定性 动力学补偿效应 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]