Gas Analysis During the Pyrolysis of Carbosilane
Research and development of ceramic materials formed by the pyrolytic transformation of organometallics needs detailed information on the behavior of the polymer (weight, rheology, chemical reactivity) as a function of temperature, time and pressure.
This paper describes the behavior of polycarbosilane (Nippon Carbon: Mark I), particularly the analysis of gaseous byproducts during the pyrolysis by gas chromotography and mass spectrometry as a function of temperature and oxidation state. A correlation with the results of other thermal analysis methods (DTA, TGA, TMA) indicates 3 stages to the transformation, based on the nature of the gaseous byproducts.
Finally, these results suggest an analogy with carbon-carbon processing, as well as ways to use such organometallics in ceramic composite development.
KeywordsCold Trap Naval Research Laboratory Thermal Analysis Method Gaseous Byproduct Infrared Spectrogram
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