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Cure kinetics and modeling the reaction of silicone rubber

机译：硅橡胶的固化动力学和反应模型

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摘要

The kinetics of the crosslinking reaction of polydimethylsiloxane (PDMS) was studied by differential scanning calorimeter (DSC). The kinetic parameters of the reaction were calculated from the Kissinger, the Ozawa, the Flynn-Wall-Ozawa, and the Friedman methods. The Chang method was also used to determine reaction order and to compare with other methods. To improve the accuracy, the autocatalytic model and the modified-Chang method were introduced. The theoretical heat generation against temperature curves, calculated by the estimated kinetic parameters, well fit the experimental data, which indicated that the analysis method used in this work was valid. The processing time and temperature was predicted by the direct integration of the kinetic equation with the data from isothermal runs. It would give a valuable guide for the thermal processing of silicone rubber.
机译：用差示扫描量热仪（DSC）研究了聚二甲基硅氧烷（PDMS）的交联反应动力学。反应的动力学参数由基辛格，小泽，弗林-沃尔-小泽和弗里德曼方法计算得出。 Chang方法还用于确定反应顺序并与其他方法进行比较。为了提高精度，引入了自动催化模型和改进的Chang方法。通过估算的动力学参数计算出的相对于温度曲线的理论生热值与实验数据完全吻合，表明该工作中使用的分析方法是有效的。通过将动力学方程式与等温运行数据直接集成来预测加工时间和温度。这将为硅橡胶的热处理提供有价值的指导。

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