水胶炸药的热分解动力学

The Thermal Decomposition Kinetics of Water Gel Explosives

为研究水胶炸药的热分解特性及化学动力学参数,用非等温热失重(TG)和差热扫描(DSC)联用仪,在2.5、5.0、10.0、20.0、40.0K/min的线性升温速率下,测试了岩石水胶炸药和煤矿许用水胶炸药热分解的起始温度和峰顶温度。用Ozawa法和Kissinger法计算了水胶炸药受热分解的化学动力学参数,得到120、150和250℃时的反应速率常数,计算了等动力学温度点。结果表明,煤矿许用水胶炸药热安定性好于岩石水胶炸药。

In order to study the thermal decomposition characteristics and the kinetic parameters of water gel explosives, the initial temperature and the maximum peak temperature of the thermal decomposition reaction of rock water gel explosive and coal mine permissible water gel explosive have been determined by means of non- isothermal thermog＇ravimetry （TG） and differential scanning calorimetry （DSC） at heating rates of 2.5,5.0,10.0, 20.0,40.0K/min^- 1. The kinetic parameters of the reaction for water gel explosives are calculated by Kissinger method and Ozawa method. With the help of these parameters, the rate constants of the reaction at 120℃,150 ℃, 250 ℃ are obtained and the iso kinetic temperature point is calculated. The result shows that the thermal stability of coal mine permissible water gel explosive is better than that of rock water gel explosive.