利用高压ＤＳＣ研究了含能材料二缩三乙二醇二硝酸酯（ＴＥＧＤＮ）的热分解特性，结果表明：常压下，ＴＥＧＤＮ 有一个分解放热峰，没有吸热峰；当压力为２ＭＰａ 时，此峰的峰形变得尖锐，峰温后移了５℃左右，放热量增加了一倍还多；压力再增大，则峰形、峰温、放热量的变化均不显著。通过研究获得了ＴＥＧＤＮ 的动力学参数，对ＴＥＧＤＮ分解机理也进行了分析讨论 The thermal decomposition of TEGDN was studied by high pressure DSC. The results showed that TEGDN had a decomposition exothermic peak at atmospheric pressure without endothermic peak. When the pressure was 2 MPa , The peak shape of this peak becomes sharp, the peak temperature after the shift of 5 ℃, the heat more than doubled; pressure and then increase, the peak shape, peak temperature, exothermic changes are not significant. By studying the kinetic parameters of TEGDN, the mechanism of TEGDN decomposition was also discussed