某新型改性双基推进剂的热安全性  

Thermal safety of one new-type CMDB propellant

作　　者：贾昊楠[1] 安振涛[1] 路桂娥[1,2] 江劲勇[1,2] 陈晨[1] 吕帅 

机构地区：[1]军械工程学院 [2]军械技术研究所 [3]62195部队

出　　处：《固体火箭技术》2014年第5期662-665,683,共5页Journal of Solid Rocket Technology

摘　　要：采用热重分析仪(TG)、差示扫描量热仪(DSC)以及加速量热仪(ARC)研究了一种以高氯酸铵(AP)为氧化剂的新型改性双基推进剂GATo-3的热安全性,并将实验结果与双基发射药SF-3进行了比较。通过TG/DSC实验得到了GATo-3的热分解过程,并初步分析了AP等组分对其热稳定性的影响。DSC的测试结果显示,GATo-3的2个分解峰温分别为180.5℃和187.7℃,低于SF-3的分解峰温;ARC的测试结果显示,GATo-3在理想绝热条件下的起始分解温度为129.1℃,绝热温升为1 177.8℃,最大温升速率为58 053.5℃/min,最大压力上升速率为52.5×105Pa/min,单位质量生成气体的最大压力为112.4×105Pa/g,用速率常数法计算活化能E=116.8 k J/mol和指前因子A=5.1×1011s-1,最大反应速率达到时间为24 h时,所对应起始温度TD24=74.0℃。研究结果表明,与双基发射药SF-3相比,GATo-3的热安全性较差,爆炸性较强。The thermal safety of one new-type CMDB GATo-3, with ammonium perchlorate as oxidant （ AP ） , was studied by TG,DSC,and ARC. The test results were compared with double-base propellant SF-3. The thermal decomposition process and the effects of AP on thermal stability of GATo-3 were analyzed by TG/DSC test. TG/DSC test results show that the two decomposition peak temperature are 180.5 ℃ and 187.7℃,which are lower than that of SF-3.ARC test results show that,in an ideal adiabatic en-vironment,the initial exothermic temperature for GATo-3 is 129.12 ℃,the adiabatic temperature rise is 1 177.8 ℃,the maximum self-heating rate is 58 053.5 ℃/min,the maximum pressure rise rate is 52.5×105 Pa/min,and the maximum pressure produced by unit mass is 112.4×105 Pa/g.The activation energy E is 116.8 kJ/mol,the frequency factor A is 5.1×1011 s-1,and TD24 is 734.0℃, which are calculated by the velocity constant method.The studies have revealed that,comparing with SF-3,GATo-3 has worse ther-mal stability and stronger explosiveness.

关 键 词：改性双基推进剂 GATo-3 绝热分解 热安全性 TG DSC 加速量热仪 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]