The Use of Derivative Thermogravimetry to Estimate Degree of Thermal Degradation
作者:
ThomasJ. Gedemer,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1974)
卷期:
Volume 8,
issue 1
页码: 95-104
ISSN:0022-233X
年代: 1974
DOI:10.1080/00222337408065817
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
It is difficult to estimate the degree of thermal degradation which has taken place in complex parts composed of cellulosics and polymeric insulation unless complete failure has occurred. There is a definite need for a parameter which can quickly and easily measure the relative degree of thermal attack on organic insulation subjected to various known environmental and processing conditions. This paper reports preliminary work using derivative thermogravimetry to perform this function. Derivative thermogravimetric analysis (TGA) was used to produce a value, TGA Index, related to the peak height of the major TGA derivative signal. This TGA Index was found to correlate with the copper number of insulating paper measured after thermal degradation. The application of TGA Index to evaluation of polymer degradation after thermal shock, water absorption, and accelerated UV attack is also discussed. Finally, preliminary studies on the use of derivative TGA to evaluate coatings exposed to various outdoor environments around the country are reported.
点击下载:
PDF (395KB)
返 回