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首页> 外文期刊>Journal of Thermal Analysis and Calorimetry >Application of non-isothermal cure kinetics on the interaction of poly(ethylene terephthalate) — Alkyd resin paints
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Application of non-isothermal cure kinetics on the interaction of poly(ethylene terephthalate) — Alkyd resin paints

机译：非等温固化动力学在聚对苯二甲酸乙二醇酯醇酸树脂涂料相互作用中的应用

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摘要

Samples of paint (P), reused PET (PET-R) and paint/PET-R mixtures (PPET-R) were evaluated using DSC to verify their physical-chemical properties and thermal behavior. Films from paints and PPET-R are visually similar. It was possible to establish that the maximum amount of PET-R that can be added to paint without significantly altering its filming properties is 2%. The cure process (80–203°C) was identified through DSC curves. The kinetic parameters, activation energy (E a) and Arrhenius parameters (A) for the samples containing 0.5 to 1% of PET-R, were calculated using the Flynn-Wall-Ozawa isoconversional method. It was observed that for greater amounts of PET-R added, there is a decrease in the E a values for the cure process. A Kinetic compensation effect (KCE), represented by the equation InA=−2.70+0.31E a was observed for all the samples. The most suitable kinetic model to describe this cure process is the autocatalytic Šesták-Berggreen, model applied to heterogeneous systems.
机译：使用DSC对油漆（P），再利用的PET（PET-R）和油漆/ PET-R混合物（PPET-R）的样品进行了评估，以验证其物理化学性质和热行为。涂料和PPET-R的薄膜在视觉上相似。可以确定在不显着改变其成膜性能的情况下，可以添加到涂料中的PET-R的最大量为2％。通过DSC曲线确定了固化过程（80–203°C）。使用Flynn-Wall-Ozawa等转化法计算了含有0.5％至1％PET-R的样品的动力学参数，活化能（E a ）和Arrhenius参数（A）。观察到，随着PET-R的添加量的增加，固化过程的EA值降低。对于所有样品，观察到由等式InA = -2.70 + 0.31E a 表示的动力学补偿效应（KCE）。描述该固化过程的最合适的动力学模型是应用于多相系统的自动催化Šesták-Berggreen模型。

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