用差示扫描量热法(DSC)测定了含能材料2,4,6-三硝基-1,3,5-苯三酚一取代(K1TNPG),二取代(K2TNPG)及三取代钾盐(K3TNPG)定压下的连续比热容,计算了在50～100 ℃温度范围内每间隔5 ℃的焓差值和熵变值.用最小二乘法进行数据处理,得出的比热容(Cp)与温度(T)的关系为: Cp=a+bT+cT2,K1TNPG,K2TNPG and K3TNPG的线性相关系数分别为0.987,0.999和0.993.%The continuous specific heat capacities at constant pressure (Cp) of energetic materials of mono-substituted potassium (K1TNPG), di-substituted (K2TNPG) and tri-substituted (K3TNPG) trinitrophloroglucinate were measured by differential scanning calorimeter (DSC) method. The change of enthalpy and entropy were calculated at an interval of 5 ℃ in the range of 50-100 ℃. The least square method is applied to treat experimental data. The temperature dependence of Cp was determined as quadratic equation: Cp=a+bT+cT2. The correlation coefficients (R) of measured results of K1TNPG, K2TNPG and K3TNPG are 0.987, 0.999 and 0.993, respectively. The deviation analysis indicates that DSC method is effective and can be used to measure the specific heat capacity of other energetic materials.
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