TG-FTIR combined technology was used to study the degradation process and gas phase products of epoxy glass fiber reinforced plastic (glass fiber reinforced plastic) under the atmospheres of high purity nitrogen. The pyrolysis characteristics of epoxy glass fiber reinforced plastic were measured under different heating rates (5, 10, 15, 20 °C min-1) from 25 to 1000 °C. The thermogravimetric analyzer (TG) and differential thermogravimetric analyzer (DTG) curves show that the initial temperature, terminal temperature, and temperature of maximum weight loss rate in the pyrolysis reaction phase all move towards high temperature, as the heating rate increases. Epoxy glass fiber reinforced plastic has two stages of thermal weightlessness. The temperature range of the first stage of weight loss is 290-460 °C. The second stage is 460-1000 °C. The above two weight loss stages are caused by pyrolysis of the epoxy resin matrix, and the glass fiber will not decompose. The dynamic parameters of glass fiber reinforced plastic were obtained through the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) and advanced Vyazovkin methods in model-free and the Coats-Redfern (CR) method in model fitting. FTIR spectrum result shows that the main components of the product gas are CO2, H2O, carbonyl components, and aromatic components during its pyrolysis.

中文翻译：

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热重分析仪（TG）和TG-FTIR（傅里叶变换红外）技术对环氧玻璃纤维增​​强塑料的热解动力学及反应机理的研究。

TG-FTIR结合技术用于研究高纯氮气氛下环氧玻璃纤维增​​强塑料（玻璃纤维增​​强塑料）的降解过程和气相产物。在25至1000°C的不同加热速率（5、10、15、20°C min-1）下测量环氧玻璃纤维增​​强塑料的热解特性。热重分析仪（TG）和差示热重分析仪（DTG）曲线显示，随着加热速率的增加，热解反应阶段的初始温度，终点温度和最大失重速率的温度都向高温移动。环氧玻璃纤维增​​强塑料具有两个失重阶段。减肥第一阶段的温度范围是290-460°C。第二阶段是460-1000°C。上述两个失重阶段是由环氧树脂基体的热解引起的，并且玻璃纤维不会分解。玻璃纤维增​​强塑料的动力学参数是通过无模型的Kissinger-Akahira-Sunose（KAS），Flynn-Wall-Ozawa（FWO）和先进的Vyazovkin方法以及模型拟合中的Coats-Redfern（CR）方法获得的。FTIR光谱结果表明，产物气在热解过程中的主要成分为CO2，H2O，羰基成分和芳族成分。