Abstract Differential scanning calorimetry was used to study the curing behavior of an additional liquid silicone rubber. Kissinger‒Akahira‒Sunose (KAS), Flynn‒Wall‒Ozawa (FWO), and Friedman (FR) model-free methods were used to calculate the curing activation energy of the additional liquid silicone rubber. The isothermal degree of cure vs. curing time curve was predicted by the Vyazovkin method at a temperature of 110 °C, and the non-isothermal curing degree vs. curing temperature curve was simulated as well. The results showed that the KAS and FWO simulated the isothermal curing behavior better than the FR in that the results calculated by the FR had a great deviation. With a steady increase in the dosage of catalyst, the activation energy was decreased gradually. This indicates that as the catalyst dosage was increased the curing degree was enhanced, which was accompanied by a significant change in the curing mechanism due to a concentration increase of the reacted vinyl groups. This work offers an insight into the hydrosilylation curing kinetics of silicone rubbers and resins.

中文翻译：

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附加液态硅橡胶的无模型固化动力学

摘要 差示扫描量热法用于研究添加液态硅橡胶的硫化行为。Kissinger-Akahira-Sunose (KAS)、Flynn-Wall-Ozawa (FWO) 和 Friedman (FR) 无模型方法用于计算附加液体硅橡胶的固化活化能。通过Vyazovkin法在110°C的温度下预测了等温固化度与固化时间曲线，并模拟了非等温固化度与固化温度曲线。结果表明，KAS和FWO比FR更好地模拟了等温固化行为，FR计算的结果有很大的偏差。随着催化剂用量的稳步增加，活化能逐渐降低。这表明随着催化剂用量的增加，固化程度增强，同时由于反应乙烯基的浓度增加，固化机理发生了显着变化。这项工作提供了对硅橡胶和树脂的氢化硅烷化固化动力学的深入了解。