Thermal decomposition of PTFE in the presence of silicon, calcium silicide, ferrosilicon and iron

被引：0
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作者：
A. Książczak
Henryka Boniuk
S. Cudziło
机构：
[1] Warsaw University of Technology,Department of Chemistry
[2] Military University of Technology,Institute of Chemistry
来源：
Journal of Thermal Analysis and Calorimetry | 2003年 / 74卷
关键词：
silicon-PTFE mixtures; thermal decomposition; TG/DTA; kinetics;
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摘要：
Simultaneous TG/DTA has been used to study the thermal decomposition of binary compositions containing polytetrafluoroethene (PTFE) with silicon (Si), calcium silicide (CaSi2), ferrosilicon (FeSi) or iron (Fe) powders. In nitrogen and under dynamic heating program the thermal decomposition of Si/PTFE and CaSi2/PTFE is an exothermic process. The other two compositions decompose endothermically. In each case the decomposition reactions show first-order kinetics but only iron does not change considerably the kinetics of PTFE depolymerization. The constants of the decomposition rate at 850 K for silicon containing reducers are about four times higher than those of PTFE and Fe/PTFE.
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页码：569 / 574
页数：5
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