Micro calorimeter

Abstract

The invention relates to a micro calorimeter. The micro calorimeter comprises a calorimeter body, a temperature control system and a data processing system, wherein the calorimeter body comprises an outer box body and an inner box body; the outer box body is provided with a heating block; the inner box body is internally provided with a thermocouple; one detection end of the thermocouple is connected with the inner box body, and the other detection end of the thermocouple is connected with a detected sample; the outer body or the inner box body is also provided with a temperature meter; a temperature detection end of the temperature control system is connected with the temperature meter, and a temperature control end is connected with a heating block; a temperature data receiving end of the data processing system is connected with the temperature meter; a temperature difference data receiving end is connected with the thermocouple. The calorimeter is only provided with a tested sample platform; the temperature difference between the tested sample and the inner box body of the calorimeter is obtained by the thermocouple; the heat variation of the tested sample in the temperature rising process can be obtained by combining with the device coefficient obtained by standard sample correction, and further a DSC curve is drawn. Compared with the traditional calorimeter, the structure is relatively compact, and is small in size.

Description

technical field [0001] The invention relates to a calorimeter for thermal analysis of materials, in particular to a calorimeter with a simplified structure Microcalorimeter . Background technique [0002] In the field of material thermal analysis, the commonly used calorimetric analysis method is differential scanning calorimeter (DSC) for short. The detection principle is to put the reference object and the test sample into a box and slowly heat up or cool down. During the heating and cooling process, record the difference between the heat absorbed or released by the test sample and the reference object, and then draw the heat difference and The temperature relationship curve, that is, the DSC curve. By analyzing the DSC curve, we can know whether the test sample produces heat absorption or heat release during the temperature rise and fall process, and can quantitatively measure the amount of heat absorbed or released. [0003] The instrument that uses the DSC method for...

AI Technical Summary

Problems solved by technology

Due to the need to set two sample platforms in the calorimeter, its structure is more complicated and the size of the instrument is larger

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