Xie Guixiang, Lu Yaqi, Lu Xiaochun, Zhang Zhusen, Lin Shuidong
Fujian Provincial Key Laboratory of Clean Energy Materials, Longyan Nonferrous Metal Industry Research Institute, College of Chemistry and Material Science, Longyan University, Longyan 364012, China.
Fujian Key Laboratory of Photoelectric Functional Materials, Huaqiao University, Xiamen 361021, China.
Polymers (Basel). 2025 Sep 1;17(17):2390. doi: 10.3390/polym17172390.
Thermogravimetric analysis (TGA) has been extensively applied in polymeric characterization and quality inspection, facilitating in-depth investigations of the microstructural thermal response characteristics of polymers, including thermal stability, composition analysis, and thermal decomposition mechanisms. Here, the impacts of six factors on the TG thermal analysis curves obtained during operation are systematically examined while analyzing their causes and recommending solutions. Furthermore, the thermal degradation kinetics of an ionomer formed by neutralizing an ethylene-methacrylic acid copolymer with metal ions (SGP membrane) used in laminated tempered glass is analyzed using the Arrhenius equation, Ozawa-Flynn-Wall hypothesis and Kissinger method. Kinetic parameters at 5% degradation are fitted and used to predict the service lifetime of the SGP membrane. The results indicate that the SGP membrane sample exhibits activation energy = 136.90 kJ/mol, reaction order = 1.65 and pre-factor = e. It can be seen that the service lifetime of the SGP membrane sample is 16 years at 80 °C and 1.65 years at 100 °C.
热重分析（TGA）已广泛应用于聚合物表征和质量检测，有助于深入研究聚合物的微观结构热响应特性，包括热稳定性、成分分析和热分解机理。在此，系统地研究了六个因素对运行过程中获得的TG热分析曲线的影响，分析其原因并提出解决方案。此外，使用阿伦尼乌斯方程、小泽-弗林-沃尔假设和基辛格方法分析了用于夹层钢化玻璃的用金属离子中和乙烯-甲基丙烯酸共聚物形成的离聚物（SGP膜）的热降解动力学。拟合了5%降解时的动力学参数，并用于预测SGP膜的使用寿命。结果表明，SGP膜样品的活化能 = 136.90 kJ/mol，反应级数 = 1.65，指前因子 = e。可以看出，SGP膜样品在80°C时的使用寿命为16年，在100°C时为1.65年。
