Differential power compensation's adiabatic calorimetry method based on scanning heating mode

被引：0

作者：

Yuan M.-Y. ^{[1
]}

Xu Q.-Y. ^{[1
]}

Ding J. ^{[1
]}

Ye S.-L. ^{[1
]}

机构：

[1] Institute of Industry and Trade Measurement Technology, China Jiliang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2021年 / 55卷 / 11期

关键词：

Differential adiabatic scanning calorimetry; Dynamic adiabatic tracking; Power compensation; Reaction detection; Thermalinertia;

D O I：

10.3785/j.issn.1008-973X.2021.11.010

中图分类号：

学科分类号：

摘要：

A differential power compensation adiabatic scanning calorimetry method was proposed, in order to solve the problems of low reaction detection efficiency, low reaction judgment sensitivity, and limited adiabatic performance of traditional adiabatic accelerating calorimeter. During the excitation stage of sample decomposition reaction, scanning mode is used to heat up the entire two-channel reaction system at a constant rate, and in order to adapt to the reaction environment of complex working condition, three dynamic reaction detection methods based on scanning baseline, i.e., two-channel heating power difference, two-channel sample temperature difference, and sample temperature rise rate, are used at the same time to improve the reaction detection efficiency and sensitivity. When the reaction happens, the differential power compensation control method and the dynamic adiabatic tracking method based on the constant temperature baseline are combined, making the sample achieve close to ideal adiabatic reaction process. The experimental verification with di-tert-butyl peroxide (DTBP) as the experimental object shows that the differential power compensation adiabatic scanning calorimetry method can significantly improve the reaction detection efficiency and sensitivity, and obtain more accurate thermal decomposition characteristics and kinetic parameters within the scan rate range of 0.3 ℃/min to 0.7 ℃/min compared with traditional adiabatic accelerating calorimetry method. © 2021, Zhejiang University Press. All right reserved.

引用

页码：2100 / 2107

页数：7

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