差热分析法绘制萘-苯甲酸二元相图

Differential Thermal Analysis Method of Drawing Benzoic Acid-naphthalene Diagram

将纯萘和纯苯甲酸按照不同的质量比配制成一系列混合物,用差热分析法绘制其差热分析(DTA)曲线。从曲线中获得不同组成的相变温度,并由此绘制出萘-苯甲酸二元系统的相图。结果表明,萘-苯甲酸二组分的最低共熔点为72.468℃,含苯甲酸的百分数为46%。

Pure benzoic acid and pure naphthalene according to different quality match made a series of compound draw the differen- tial thermal analysis and differential thermal analysis （DTA） curve. Composition and phase transition temperature from curve rela- tionship, and thus to map the benzoic acid, naphthalene binary phase diagram of the system. Results sbew that the benzoic acid, naphthalene two component of the lowest melting point is 72.468 ℃, group score is 46 %.