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用DSC技术研究CnZnCl(n=12,14,16,18)及其C14ZnCl/C16ZnCl二元体系固-固相变的动力学,借助动力学方程Kissinger法和Ozawa法计算固-固相变过程的动力学参数—活化能(Ea)和反应级数(n),两种方法的结果相符.结果表明它们的固-固相变级数均为1和纯物质的活化能随链长的增加而减小;比较纯物质与二元体系的活化能,发现二元体系的活化能相对较低,因此,从动力学角度讲,二元体系的相变较容易发生.所以在相同的条件下,可以优先考虑应用二元体系.
The kinetics of solid-solid phase transformation of CnZnCl (n = 12, 14, 16, 18) and its C14ZnCl / C16ZnCl binary system was studied by DSC. The Kissinger and Ozawa kinetics equations were used to calculate the solid- The kinetic parameters-activation energy (Ea) and reaction order (n) are in good agreement with the results of the two methods.The results show that their solid-solid phase transitions are both 1 and the activation energy of pure substance increases with the increase of chain length The activation energy of the binary system is relatively low and the activation energy of the binary system is relatively low, so the phase transition of the binary system is easier to occur from the kinetic point of view, so under the same conditions, You can give priority to using binary systems.