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.
Research on Chemical Intermediates – Springer Journals
Published: Oct 15, 2015
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