In this study, the main purpose is to systematically evaluate isothermal and non-isothermal crystallization behavior of short glass fiber-reinforced polyphenylene sulfide polymer composites (PPS/GF) by a wide range of commonly applied models and also to preciously discuss the crystallization evolution and dynamic mechanical properties together with the consideration of thermal aging effects. Some interesting progress concerning this study can be concluded as follows: the Avrami model was used to examine the isothermal crystallization behavior of PPS/GF and the Avrami plot results exhibit that the isothermal crystallization contains primary and second crystallization process. In terms of non-isothermal crystallization, the Jeriorny model and Mo model could describe the mechanism of nucleation and crystal growth of PPS/GF material under study. Also, the activation energy of non-isothermal crystallization is calculated (−58.78 kJ/mol) by Kissinger method. Another important aspect is that thermal aging has an obvious effect on crystallization behaviors of PPS under study. The degree of crystallinity increases from 44% (virgin sample) to 56% after 96 h of aging at 200 °C. After a long period of oxidation up to 1080 h at 200 °C, the crystallinity degree decreases to 36.6% due to thermo-oxidation effect. DMA results imply that thermal aging may lead to more crosslinking reactions and result into more restriction of molecule mobility in PPS composite materials.

在这项研究中，主要目的是通过广泛的常用模型系统地评估短玻璃纤维增​​强的聚苯硫醚聚合物复合材料（PPS / GF）的等温和非等温结晶行为，并宝贵地讨论了结晶演化和动态机械性能以及热老化效应的考虑。关于这项研究的一些有趣的进展可以得出以下结论：用Avrami模型检查了PPS / GF的等温结晶行为，Avrami图结果显示等温结晶包含一次和第二次结晶过程。在非等温结晶方面，Jeriorny模型和Mo模型可以描述正在研究的PPS / GF材料的成核和晶体生长机理。也，通过基辛格法计算非等温结晶的活化能（-58.78 kJ / mol）。另一个重要方面是，热老化对所研究的PPS的结晶行为具有明显的影响。在200°C老化96 h后，结晶度从44％（原始样品）增加到56％。在200°C下经过长达1080 h的长时间氧化后，由于热氧化作用，结晶度降低至36.6％。DMA结果表明，热老化可能导致更多的交联反应，并导致PPS复合材料中分子迁移率受到更多限制。在200°C老化96 h后，结晶度从44％（原始样品）增加到56％。在200°C下经过长达1080 h的长时间氧化后，由于热氧化作用，结晶度降低至36.6％。DMA结果表明，热老化可能导致更多的交联反应，并导致PPS复合材料中分子迁移率受到更多限制。在200°C老化96 h后，结晶度从44％（原始样品）增加到56％。在200°C下经过长达1080 h的长时间氧化后，由于热氧化作用，结晶度降低至36.6％。DMA结果表明，热老化可能导致更多的交联反应，并导致PPS复合材料中分子迁移率受到更多限制。