【摘要】 对瑞士梅特勒 -托利多公司生产的 DSC82 2 e差示扫描量热仪 (differential scanning calorimetry)的测量精密度进行了探讨 ,考查了样品质量、样品种类、扫描速率、样品盘对熔点和熔化焓的测定以及仪器热阻 R0 影响 .实验结果表明 ,测定条件对熔点和熔化焓测定没有影响 ,但对热阻 R0 有一定的影响 .DSC82 2 e性能优异 ,操作简便 ,具有较高的温度和量热精密度 .更多还原

【Abstract】 The accuracy of differential scanning calorimetry (DSC822 e), which developed by METTLER TOLEDO company, was discussed in the paper. Experimental conditions such as sample kind, sample weight, scanning rate, sample pan had been checked. And their effects which made on the determinations of metal melting point, enthalpy and DSC′s thermal resistance (R 0) were suggested. The results showed that DSC822 e had high performances, easy operation, high temperature and calorimetric accuracy.更多还原