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采用热分析技术研究了在氮气气氛中硫酸钙晶须(CSW)/氟橡胶(FPM)复合材料的非等温热分解行为及其动力学,并与无水硫酸钙(ACS)/氟橡胶(FPM)复合材料进行了对比。通过Kissinger法和Ozawa法分别计算出其热分解活化能,且结果相近。结果表明:Kissinger法计算的CSW/FPM复合材料的热分解活化能为203.33 kJ.mol-1,高于ACS/FPM复合材料的热分解活化能(174.74 kJ.mol-1),具有较高的热稳定性;热分解反应级数约为1级。随着失重率的增大,热分解活化能增大。
The non-isothermal pyrolysis behavior and kinetics of CSW / FPM composites in nitrogen atmosphere were investigated by means of thermal analysis, and the results were compared with those of anhydrous calcium sulfate (ACS) / fluororubber ( FPM) composites were compared. The thermal decomposition activation energy was calculated by Kissinger method and Ozawa method, respectively, and the results were similar. The results show that the activation energy of thermal decomposition of CSW / FPM composites calculated by Kissinger method is 203.33 kJ · mol-1, which is higher than that of ACS / FPM composites (174.74 kJ · mol-1) Thermal stability; thermal decomposition reaction level is about 1 level. As the weight loss rate increases, the thermal decomposition activation energy increases.