高燃速推进剂GATo的热安全性分析  

Analysis on Thermal Safety of High Burning Rate Propellant GATo

作　　者：唐婧 常双君 滕学锋[2] 闫伟 张行 TANG Jing;CHANG Shuang-jun;TENG Xue-feng;YAN Wei;ZHANG Xing(College of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]中北大学环境与安全工程学院,山西太原030051 [2]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2018年第3期285-288,共4页Chinese Journal of Explosives & Propellants

摘　　要：为研究高燃速推进剂改铵铜(GATo)的热安全性,采用差示扫描量热(DSC)法和热重(TG)法分析了GATo推进剂的热分解过程,计算了其热分解活化能(E_a)、指前因子(A)、分解温度(t_(e0))、热爆炸临界温度(t_0)及热力学参数,并测试了压伸成型管状GATo及含溶剂GATo推进剂药浆的5s延滞期爆发点及热爆发反应参数。结果表明,采用Kissinger法计算得到GATo推进剂的热分解活化能为139.1kJ/mol,指前因子为7.5×10^(15)s^(-1),分解温度为172.0℃;根据Hu-Zhao-Gao法计算得到GATo推进剂的热爆炸临界温度为182.8℃,低于RDX-CMDB推进剂GHT及GHQ;在升温速率为10℃/min时,GATo推进剂分解峰值温度的活化自由能(ΔG~≠)为113.8kJ/mol,活化焓(ΔH~≠)为135.3kJ/mol,活化熵(ΔS~≠)为29.7J/(K·mol)^(-1);压伸成型管状GATo与含溶剂GATo药浆的5s延滞期爆发点分别为231和234℃,热爆发分解反应活化能分别为112和132kJ/mol,表明溶剂对其热爆发分解反应活化能有较大影响。To study the thermal safety of high burning rate propellant GATo, the thermal decomposition process of GATo propellant were analyzed by DSC and TG. The activation energy（ E a） and pre-exponential factor（ A ） of thermal decomposition, decomposition temperature（ t e0 ）, critical temperature of thermal explosion （ t b） and thermodynamic parameters of GATo propellant were calculated. The 5 s explosion temperature and the thermal decomposition reaction parameters of tubular GATo propellant by extrusion molding and GATo propellant slurry with solvent at different temperatures were measured. The results show that the activation energy（ E a） and pre-exponential factor（ A ） calculated by Kissinger′s method are 139.1 kJ/mol and 7.5×10 15 s -1 , respectively and the decomposition temperature is 172.0 ℃. The critical temperature of thermal explosion calculated by Hu-Zhao-Gao′s method is 182.8 ℃ , which is lower than that of RDX-CMDB propellants GHT or GHQ. The free energy of activation （Δ G ≠）, enthalpy of activation（Δ H ≠） and entropy of activation（Δ S ≠） for GATo propellant decomposition reaction at the temperature of decomposition peak at a heating rate of 10 ℃/min are 113.8 kJ/mol, 135.3 kJ/mol and 29.7 J/（K·mol） -1 , respectively. The 5 s explosion temperature of tubular GATo by extrusion molding and GATo propellant slurry with solvent are 231 and 234 ℃, respectively, and their activation energy of thermal explosive decomposition reaction are 112 and 132 kJ/mol, respectively, showing that adding solvent to GATo propellant has an significant influence for the thermal explosion decomposition reaction activation energy.

关 键 词：高燃速推进剂 GATO 热安全性 热爆炸临界温度 5s爆发点 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]