N,N'-乙撑双硬脂酰胺的热分解动力学研究

Research on Thermal Decomposition Kinetics of N,N'-Ethylenebis(stearamide)

以TGA-DTA为手段,考察N,N'-乙撑双硬脂酰胺(EBS)在氮气气氛中的热分解行为和分解动力学。用Flynn-Wall-Ozawa、Kissinger和?atava-?esták法计算了EBS的热分解动力学参数,并推断了分解机理。结果表明,从519.15 K到723.15 K EBS热分解过程分为两个阶段。两个阶段的表观活化能分别为78.41和88.38 k J×mol^(-1),指前因子分别为2.188×10~8和7.586×10~8 min^(-1),热分解机理函数的积分式分别为g(α)=1-(1-α)2和g(α)=α。为进一步开发与利用EBS提供基础数据。

Thermal decomposition characteristics and kinetics of N,N＇-ethylenebis（stearamide） （EBS） wereinvestigated under high purity nitrogen atmosphere by DTA-TGA techniques. The thermal decompositionkinetic parameters of EBS were calculated by Flynn-Wall-Ozawa, Kissinger and gatava-gestfik methods, andthe decomposition mechanism was also studied. The results show that the thermal decomposition processcontains two stages at 519.15N723.15 K. For the first and second stages, the activation energies are 78.41 and88.38 kJ.mo1-1 respectively, and the pre-exponential factors are 2.188x 10s and 7.586x108 min-1, respectively.Moreover, the integral equations for the decomposition mechanism of the two stages are g（a） = 1-（l-a）2 andg（a） = a, respectively. The data obtained provide fundamental information for industry production andapplication of EBS.