Thermogravimetric difference thermal analyzer

The thermogravimetric differential thermal analyzer (TG-DTA) combines two technologies, thermogravimetric analysis (TG) and differential thermal analysis (DTA). It can simultaneously provide information on the mass changes and heat changes of substances during heating or cooling processes and is widely used in multiple fields. The following introduces its characteristics to you:

Functional comprehensiveness

Simultaneously obtain multiple pieces of information: The thermogravimetric difference thermal analyzer can simultaneously obtain the mass change (TG curve) and heat change (DTA curve) of the sample in a single experiment. For example, when studying the thermal decomposition process of mineral samples, the change of sample mass with temperature can be observed from the TG curve, and the decomposition stage and mass loss rate can be determined. The endothermic or exothermic peaks corresponding to the mass change can also be observed on the DTA curve, and the heat change during the decomposition process can be understood, providing rich data for a comprehensive understanding of the thermal properties of the sample.

Mutual verification and complementarity: TG and DTA data can mutually verify and complement each other. When there is a mass change in the TG curve, the endothermic or exothermic peaks on the DTA curve can help determine whether the change is a physical process (such as evaporation, sublimation) or a chemical process (such as decomposition, oxidation). For instance, in the study of thermal degradation of polymers, the TG curve shows a decline in mass, and the corresponding endothermic peak on the DTA curve indicates that this is an endothermic chemical degradation process. The combination of the two can more accurately analyze the thermal stability of polymers.