物理化学学报 >> 2009, Vol. 25 >> Issue (02): 309-313.doi: 10.3866/PKU.WHXB20090219

研究论文 上一篇    下一篇

3,6-二肼基-1,2,4,5-四嗪的热行为、比热容及绝热至爆时间

徐抗震; 赵凤起; 任莹辉; 马海霞; 宋纪蓉; 胡荣祖   

  1. 西安近代化学研究所, 西安 710065; 西北大学化工学院, 西安 710069; 故宫博物院文保科技部, 北京 100009
  • 收稿日期:2008-08-28 修回日期:2008-10-20 发布日期:2009-01-16
  • 通讯作者: 赵凤起 E-mail:npecc@163.com

Thermal Behavior, Specific Heat Capacity and Adiabatic Time-to-Explosion of 3,6-Dihydrazino-1,2,4,5-tetrazine

XU Kang-Zhen; ZHAO Feng-Qi; REN Ying-Hui; MA Hai-Xia; SONG Ji-Rong; HU Rong-Zu   

  1. Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China; College of Chemical Engineering, Northwest University, Xi’an 710069, P. R. China; 3Conservation Technology Department, the Palace Museum, Beijing 100009, P. R. China
  • Received:2008-08-28 Revised:2008-10-20 Published:2009-01-16
  • Contact: ZHAO Feng-Qi E-mail:npecc@163.com

摘要: 利用差示扫描量热法(DSC)、热重-微商热重法(TG-DTG)研究了3,6-二肼基-1,2,4,5-四嗪(DHT)的热行为, 其分解过程可分为两个放热的分解过程, 且热分解反应的表观活化能分别为154.8和123.4 kJ·mol-1, 指前因子分别为1016.63和109.48 s-1. DHT热爆炸的临近温度为426.10 K. 同时, 利用微量热法和理论计算方法研究了DHT的比热容, 298.15 K时的标准摩尔比热容为183.61 J·mol-1·K-1. 计算获得了DHT的绝热至爆时间为263.84-297.58 s之间的某一值.

关键词: 3,6-二肼基-1,2,4,5-四嗪, 热行为, 比热容, 绝热至爆时间

Abstract: Thermal behavior of 3,6-dihydrazino-1,2,4,5-tetrazine (DHT) was studied by differential scanning calorimetry (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG), and the decomposition process can be divided into two exothermic decomposition stages. Values of the apparent activation energy (E) and pre-exponential constant (A) of the two exothermic decomposition stages are 154.8 and 123.4 kJ·mol-1, 1016.63 and 109.48 s-1, respectively. The critical temperature of thermal explosion is 426.10 K. The specific heat capacity of DHT was determined by the micro-DSC method and theoretical calculation method. The standard molar specific heat capacity was found to be 183.61 J·mol-1·K-1 at 298.15 K. The adiabatic time-to-explosion of DHT was calculated to be a certain value between 263.84 s and 297.58 s.

Key words: 3,6-Dihydrazino-1,2,4,5-tetrazine, Thermal behavior, Specific heat capacity, Adiabatic time-to-explosion

MSC2000: 

  • O642