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前言 比热是物质的一个重要热力学参数。许多物质的比热数据在有关文献中能查阅到,但随着材料科学的发展,合成、改性的许多新型材料,例如各种新型的复合材料,其比热数据很难从现有的文献中查找到。因此,运用现代热分析技术测定材料的比热对于研究新材料是有实用意义的。用差示扫描量热法(DSC)测定物质的比热,从六十年代国外就有一些报导。该方法具有分析时间短,样品常用量少,精确度较高等显著优点。
Introduction The specific heat is an important thermodynamic parameter of matter. The thermometric data of many materials are available in the literature. However, with the development of materials science, many new materials synthesized and modified, such as various new composite materials, are difficult to obtain from the existing literature Find it Therefore, the use of modern thermal analysis of the material to determine the specific heat for the study of new materials is of practical significance. Measuring the specific heat of a substance by differential scanning calorimetry (DSC) has been reported from abroad in the 1960s. The method has the advantages of short analysis time, less sample usage, higher accuracy and the like.