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从热分析的分类而言,它包含的方面是很宽广的。本文主要叙述:TG(热重量分析,Thermogravime-try);DTG(导数热重量分析,Derivative Thermog-ravimetry);DTA(差热分析,Differential ThermalAnalysis);DSC(差示扫描量热分析,DifferentialScanning Calorimetry)的应用。一、TG和DTG在高聚物中的应用1.物性的测定用TG研究物性是比较方便的,如在脱溶剂化过程中,TG对提高聚合物的纯度和聚合反应完成的程度均起主要作用。在聚合物解聚过程中,分解温度的测定,分解反应的速率测定和聚合反应后物质重量的变化等等均可通过TG曲线计算获得。
From the thermal analysis of the classification, it contains aspects is very broad. This article describes: TG (Thermogravime-try); DTG (Derivative Thermog-ravimetry); DTA (Differential Thermal Analysis); DSC (Differential Scanning Calorimetry) Applications. First, the application of TG and DTG in the polymer 1. Physical properties Determination of physical properties with TG is more convenient, such as in the process of desolvation, TG to improve the purity of the polymer and the extent of the polymerization reaction played a major effect. In the polymer depolymerization process, the determination of the decomposition temperature, the decomposition reaction rate determination and the change of the weight of the material after the polymerization reaction and the like can be obtained by calculating the TG curve.