新型复合油相乳化炸药基质的非等温热分解特性

为了掌握新型复合油相制备的乳化炸药的热分解特性,利用TG-DTG技术测试了其制备的乳化炸药基质在氮气气氛中的热分解过程,用Kissinger法和Ozawa法进行动力学分析,求解相关动力学参数。通过模型拟合法推测其热分解机理,并用非模型拟合法进行验证。结果表明,新型复合油相制备的乳化炸药基质分解率为15%~95%时,其热分解平均活化能(E)和指前因子lg(A/s~(-1))分别为142.12kJ/mol和13.26,热稳定性高于复合蜡制备的乳化炸药基质,热分解过程符合三维(3D)扩散控制机理(n=2)。

Non-isothermal Thermal Decomposition Characteristics of Emulsion Explosive Matrix Prepared by the New Type of Complex Oil Phase

In order to grasp the thermal decomposition characteristics of emulsion explosives prepared by the new complex oil phase, the non-isothermal thermal decomposition process of emulsion explosive matrix was tested by TG-DTG technology in nitrogen atmosphere.The corresponding kinetic parameters such as activation energy(E) and pre-exponenitial factor(A) were obtained according to the Kissinger and Ozawa methods.The thermal decomposition mechanism of the emulsion explosive matrix was predicted by the model fitting method, and was further verified by the model-free method.The results show that the average activation energy E and pre-exponenitial factor lg(A/s-1) are about 142.12kJ/mol and 13.26 respectively in the conversion rate range of 15%-95%.The thermal stability of emulsion explosive matrix prepared by new complex oil phase is better than that of the matrix prepared by complex wax.The thermal decomposition reaction mechanism follows the three dimensional (3D) diffusion control mechanism(n=2).