A Thermokinetic Study of a Polycarbosilane- and Oligovinylsilazane-Based Ceramic-Forming Composition

Autor:	E. A. Davydova, A. M. Shestakov, M. I. Valueva, M. A. Khaskov
Rok vydání:	2018
Předmět:	Materials science 020209 energy General Chemical Engineering Metals and Alloys Infrared spectroscopy 02 engineering and technology Rate equation 021001 nanoscience & nanotechnology Inorganic Chemistry Reaction rate Differential scanning calorimetry Chemical engineering Heat flux visual_art 0202 electrical engineering electronic engineering information engineering Materials Chemistry visual_art.visual_art_medium Ceramic 0210 nano-technology Pyrolysis Curing (chemistry)
Zdroj:	Inorganic Materials. 54:1162-1167
ISSN:	1608-3172 0020-1685
DOI:	10.1134/s0020168518110080
Popis:	The thermokinetic behavior of a polycarbosilane- and oligovinylsilazane-based ceramic-forming binder during curing and pyrolysis has been studied by differential scanning calorimetry and infrared spectroscopy. The rate equations for the curing and pyrolysis reactions have been derived under the assumption that the reaction rate, weight loss, and heat flux are proportional to the heating rate. Curing and pyrolysis have been shown to involve at least two competing processes. Based on the kinetic models obtained, we have proposed heat treatment conditions that ensure a constant rate of the curing and pyrolysis reactions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::280d1e18512533b8e83f7766cff68a31 https://doi.org/10.1134/s0020168518110080 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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