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Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel

Gabriel, Andreas O. ; Riedel, Ralf ; Storck, S. ; Maier, W. F. :
Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel.
In: Applied organometallic chemistry, 11 (10-11) pp. 833-841. ISSN 0268-2605
[Artikel], (1997)

Kurzbeschreibung (Abstract)

A novel polymeric organosilicon gel with the composition [MeSi(NCN)(1.5)](n) synthesized by the reaction of MeSiCl3 with Me3Si-N=C=N-SiMe3 is reported. The reaction is performed without any solvent and with catalytic amounts of pyridine and provides highly cross-linked poly(methylsilsesquicarbodiimide) in the form of a stable non-oxidic gel with unusual low open porosity (< 1 m(2) g(-1)). The Si-C-N gel transforms to an amorphous silicon carbonitride ceramic, SiC1.1N1.6, by the thermally induced ceramization at 1200 degrees C in inert atmosphere (argon), The gel-derived silicon carbonitride is thermally stable up to 1450 degrees C, The synthesis, characterization and pyrolysis behavior of the new polyorganosilicon gel is discussed.

Typ des Eintrags: Artikel
Erschienen: 1997
Autor(en): Gabriel, Andreas O. ; Riedel, Ralf ; Storck, S. ; Maier, W. F.
Titel: Synthesis and thermally induced ceramisation of a non-oxidic poly(methylsilsesquicarbodiimide) gel
Sprache: Englisch
Kurzbeschreibung (Abstract):

A novel polymeric organosilicon gel with the composition [MeSi(NCN)(1.5)](n) synthesized by the reaction of MeSiCl3 with Me3Si-N=C=N-SiMe3 is reported. The reaction is performed without any solvent and with catalytic amounts of pyridine and provides highly cross-linked poly(methylsilsesquicarbodiimide) in the form of a stable non-oxidic gel with unusual low open porosity (< 1 m(2) g(-1)). The Si-C-N gel transforms to an amorphous silicon carbonitride ceramic, SiC1.1N1.6, by the thermally induced ceramization at 1200 degrees C in inert atmosphere (argon), The gel-derived silicon carbonitride is thermally stable up to 1450 degrees C, The synthesis, characterization and pyrolysis behavior of the new polyorganosilicon gel is discussed.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Applied organometallic chemistry
Band: 11
(Heft-)Nummer: 10-11
Verlag: JOHN WILEY & SONS LTD, Sussex, England
Freie Schlagworte: ilylcarbodi-imide; bis(trimethylsilyl)carbodi-imide; poly(methylsilsesquicarbodi-imide); sol-gel; pyrolysis; thermal analysis; mass spectra; silicon carbonitride; argon physisorption; high-resolution transmission electron microscopy (HR TEM), SILICON OXYCARBIDE GLASSES; CHEMISTRY
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
11 Fachbereich Material- und Geowissenschaften > Fachbereich Materialwissenschaft (1999 aufgegangen in 11 Fachbereich Material- und Geowissenschaften)
Hinterlegungsdatum: 19 Nov 2008 15:55
DOI: 10.1002/(SICI)1099-0739(199710/11)11:10/11<833::AID-AOC643>3.0.CO;2-S
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