Synthesis, characterization and curing behavior of methyl-tri(phenylethynyl)silane

Synthesis, characterization and curing behavior of methyl-tri(phenylethynyl)silane Methyl-tri(phenylethynyl)silane ((ph-C≡C)3-Si-CH3) (MTPES) was synthesized with methyltrichlorosilane and phenylethylene by Grignard reaction. Its molecular structure was characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance (1H-NMR, 13C-NMR, and 29Si-NMR). Its curing behavior was analyzed by non-isothermal differential scanning calorimetry and rheometry, and the corresponding kinetic parameters and kinetic model were also discussed by Kissinger, Ozawa, Flynn–Wall–Ozawa and Friedman methods. The results showed that the melting point of MTPES was 130 °C and the processing window was 200 °C. The activation energy E a, pre-exponential factor lnA and the reaction order n, m were 112.58 kJ/mol, 21.22 (s−1), 1.20 and 0.56, respectively. The curing behavior of MTPES followed the autocatalytic kinetic model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Synthesis, characterization and curing behavior of methyl-tri(phenylethynyl)silane

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2307-8
Publisher site
See Article on Publisher Site

Abstract

Methyl-tri(phenylethynyl)silane ((ph-C≡C)3-Si-CH3) (MTPES) was synthesized with methyltrichlorosilane and phenylethylene by Grignard reaction. Its molecular structure was characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance (1H-NMR, 13C-NMR, and 29Si-NMR). Its curing behavior was analyzed by non-isothermal differential scanning calorimetry and rheometry, and the corresponding kinetic parameters and kinetic model were also discussed by Kissinger, Ozawa, Flynn–Wall–Ozawa and Friedman methods. The results showed that the melting point of MTPES was 130 °C and the processing window was 200 °C. The activation energy E a, pre-exponential factor lnA and the reaction order n, m were 112.58 kJ/mol, 21.22 (s−1), 1.20 and 0.56, respectively. The curing behavior of MTPES followed the autocatalytic kinetic model.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 15, 2015

References

  • Cure kinetics of a multisubstituted acetylenic monomer
    Sastri, SB; Armistead, JP; Keller, TM
  • Thermal stability of cocured blends of vinyl trimethoxysilane and aryl acetylene resins with different posttreatments
    Wu, Y; Yu, R; Hu, L

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