EP/MOC复合材料热分解动力学与阻燃性能研究

Thermal Decomposition Kinetics and Flame Retardant Properties of EP/MOC Composites

采用Kissinger法和Crane法对环氧树脂/氯氧镁(EP/MOC)阻燃复合材料在空气中不同升温速率下的热重(TG)和差热(DTA)曲线进行了热解动力学研究。测定了EP/MOC复合材料中EP起始分解和终止分解放热峰的特征温度。结果表明:EP/MOC复合材料中的EP活化能高于纯EP,说明MOC增强了EP的热稳定性,提高了热解温度;EP/MOC中的EP热分解反应级数和纯EP基本相同,说明同条件下的EP和MOC对热分解速率的影响是相同的;另外,该EP/MOC复合材料具有良好的阻燃性能。

Kissinger and Crane methods were used to calculate thermal decomposition kinetic parameter,, by investigating thermogravimetric （TG） and differential thermal analysis （DTA） curves of epox! resin/magnesium oxychloride （EP/MOC） flame retardant composites at different heating rates The characteristic temperatures of initial and terminational exothermic decomposition peak o EP in MOC/EP flame retardant composites were measured. The results show that the activatior energy of EP in EP/MOC flame retardant composites is higher than that of pure EP, and MO（ enhances thermal stability and increases pyrolysis temperature of EP in EP/MOC. The therma decomposition reaction orders of EP in EP/MOC flame retardant composites and pure EP art basically the same, indicating that both effects of EP and MOC on thermal decomposition rate,, are the same at the same conditions. Moreover, the EP/MOC composites exhibits excellent flam retardant properties.