物理化学学报2008，Vol.24Issue(3)：453-458,6.
N-脒基脲二硝酰胺放热分解反应的动力学行为
Kinetic Behaviour of the Exothermic Decomposition Reaction of N-Guanylurea Dinitramide
高红旭 1张海 2赵凤起 1胡荣祖 1马海霞 3徐抗震 3仪建华 1徐司雨 1高茵1
作者信息
- 1. 西安近代化学研究所,西安,710065
- 2. 西北大学数学系,西安,710069
- 3. 西北大学化工学院,西安,710069
- 折叠
摘要
Abstract
The kinetic behaviour of the exothermic decomposition reaction and the specific heat capacity of N
guanylurea dinitramide(GODN)were determined by DSC and mircocalorimeter.Its kinetic parameters of the major exothermic decomposition reaction in a temperature-programmed mode [the apparent activadon energy(E)and preexponendal factor(A)],self-accelerating decomposition temperature(TSADT),time to maximum rate(tTMrad),and time-toignition(tTIad)under adiabatic conditions were calculatecL The results showed that under non-isothermal DSC conditions.the thennal decomposition of GUDN could be described by the empiric-order autocatalytic equation:dα/dt=1018.49×exp(-195500/RT)(1-α)0.81+1018.00exp(-177000/RT)α1.29(1-α)0.71,and the value of the critical rate of temperature rise in GUDN was 0.1236 K·h-1 when the decomposition reaction converted into thermal explosion.The values of TSDT,tTMRad,
and tTIad were 473.95 K, 2.24 S,and 3.51 S,respectively.关键词
N-脒基脲二硝酰胺/自催化分解/动力学参数/临界温升速率/热爆炸/非等温DSCKey words
GUDN/Autocatalytic decomposition/Kinetic parameters/Critical rate of temperature rise/Thermal explosion/Non-isothermal DSC分类
化学化工引用本文复制引用
高红旭,张海,赵凤起,胡荣祖,马海霞,徐抗震,仪建华,徐司雨,高茵..N-脒基脲二硝酰胺放热分解反应的动力学行为[J].物理化学学报,2008,24(3):453-458,6.
