A SIMPLE METHOD FOR ESTIMATING ACTIVATION-ENERGY FROM DERIVATIVE THERMOANALYTICAL CURVES AND ITS APPLICATION TO THERMAL SHRINKAGE OF POLYCARBONAYE

被引:18
|
作者
OZAWA, T [1 ]
KATO, T [1 ]
机构
[1] UNIV UTSUNOMIYA,FAC ENGN,DEPT APPL CHEM,UTSUNOMIYA 321,JAPAN
来源
JOURNAL OF THERMAL ANALYSIS | 1991年 / 37卷 / 06期
关键词
D O I
10.1007/BF01913863
中图分类号
O414.1 [热力学];
学科分类号
摘要
Activation energy can be estimated by a new simple method, in which logarithm of maximum rate of conversion observed at different heating rates is plotted against reciprocal absolute temperature, because the conversion at the maximum rate is approximately independent of the heating rate. The method is applied to thermal shrinkage of polycarbonate, and the estimated activation energy is in good agreement with those obtained by conventional methods.
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页码:1299 / 1307
页数:9
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