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本文介绍一种新的热分析仪器──热重－红外光谱联机分析仪的工作原理和分析过程。并通过苦干实际例子，介绍了热重－红外光谱分析方法在化学化工、高分子材料和药物等的耐热性能和热分解（降解）过程研究中的应用。
This article describes the working principle and analysis of a new thermal analysis instrument, the TG-IR spectrometer. Through the practical examples, the application of TG-IR spectroscopy in the research of heat-resistance and thermal decomposition (degradation) of chemical and chemical engineering, polymer materials and drugs are introduced.