Development of mechanistic model for BlackglasTM pyrolysis: Comparison of theory and experiment

W. N. Gill, A. Kulkarni, F. Wang, Y. W. Lee, J. Madsen, A. Tobin, Thomas M. Donnellan

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

The development of a mechanistic model for the transformation of BlackglasTM polymer to a silicon carboxide glass during pyrolysis was based on the known chemistry and architecture of the polysiloxane precursors. The pyrolysis process and resulting mass loss is due to the occurrence of multiple chemical reactions that lead to the evolution of hydrocarbon gases such as methane, ethane and hydrogen. The kinetic parameters used to fit the model were estimated from literature values on bond energies and chemical kinetics, and results were compared with TGA/RGA experiments obtained on pyrolyzed BlackglasTM composites. The effects of heating rate, temperature and curing cycle on outgassing kinetics will be explained in terms of the chemistry of decomposition of the polymer, heat transfer, specimen geometry and thermal properties of the composite.

Original languageEnglish (US)
Pages (from-to)407-415
Number of pages9
JournalCeramic Engineering and Science Proceedings
Volume18
Issue number4 B
StatePublished - Jan 1 1997
EventProceedings of the 1997 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures-B - Cocoa, FL, USA
Duration: Jan 12 1997Jan 16 1997

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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