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Structural evolution of a poly(methylsilane)/tetra-allylsilane mixture into silicon carbide

1997; Elsevier BV; Volume: 33; Issue: 8 Linguagem: Inglês

10.1016/s0014-3057(96)00261-3

1873-1945

Mauricio Fernando Gozzi, Inez Valéria Pagotto Yoshida,

Advanced materials and composites

Abstract A polymeric precursor to SiC based on the mixture between poly(methylsilane) and tetra-allylsilane was prepared. The structural evolution by which this precursor system undergoes until its conversion to SiC was monitored by IR, Raman, 13C and 29Si MAS NMR spectroscopies, and by XRD techniques. Thermal and density measurements were also run. The role of the hydrosilylation reaction between SiH and CC moities on the ceramic conversion was also investigated.