A STUDY OF THE THERMAL EFFECTS OBSERVED IN DTA .2. THE INFLUENCE OF SAMPLE AND REFERENCE SYSTEM PARAMETERS ON A TYPICAL DTA CURVE

被引：3

作者：

WILBURN, FW ^{[1
]}

DOLLIMORE, D ^{[1
]}

CRIGHTON, JS ^{[1
]}

机构：

[1] UNIV LEEDS,DEPT TEXT IND,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

THERMOCHIMICA ACTA | 1991年 / 181卷

关键词：

D O I：

10.1016/0040-6031(91)80422-F

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A mathematical model is used to study the influence of changes in the physical properties of a sample, as it undergoes a reaction, on the characteristics of the DTA curve produced. Some of the earlier methods used to obtain activation energies from DTA peaks are shown to be in error if the sample physical properties change during the reaction. Peak shape is particularly influenced by changes in specific heat and peak area is affected by changes in conductivity. Large changes in specific heat can cause considerable distortion of the DTA curve.

引用

页码：173 / 190

页数：18

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[6] A STUDY OF THE THERMAL EFFECTS OBSERVED IN DTA .3. THE INFLUENCE OF A HOLDER AROUND THE SAMPLE AND REFERENCE MATERIALS ON A TYPICAL DTA CURVE [J].

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