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差示热分析法(简称DTA)是热分析技术中应用比较广泛的一种技术,它测量按予定的温度程序加热或冷却的样品与参考物质之间的温度差,并且以差示的方法记录。这种方法虽早在19世纪末就已产生,但长期以来应用并不广泛,只是最近20余年来由于高分子等学科迅速发展的要求,以及由于电子技术的迅速发展,提供了日益完备的实验设备,这个方法又获得了许多新的应用,开辟了许多新的研究领域。目前除粘土、矿物、无机盐热稳定性等领域外,在高分子材料、物理化学、火炸药等新的领域中获得了越来越广泛的应用。使用差示热分析法研究反应动力学就是近20余年来比较活跃的领域
Differential thermal analysis (DTA) is a technique widely used in thermal analysis. It measures the temperature difference between a sample and a reference material heated or cooled at a predetermined temperature and records it as a differential . Although this method has been produced as early as the late 19th century, it has not been widely used for a long time. However, due to the rapid development of polymers and other disciplines in the recent 20 years and due to the rapid development of electronic technology, an increasingly complete experimental equipment has been provided , This method has gained a lot of new applications, opened up many new areas of research. Currently in addition to clay, minerals, inorganic salt thermal stability and other fields, in the polymer materials, physical chemistry, explosives and other new fields has been more and more widely used. The use of differential thermal analysis of reaction kinetics is more active in the past 20 years