Preparation And Characterization Of Silicon Carbide Foam By Using In-Situ Generated Polyurethane Foam
Journal: International Journal of Scientific & Technology Research (Vol.4, No. 11)Publication Date: 2015-11-15
Authors : Shalini Saxena; Arvind Kumar Saxena;
Page : 345-349
Keywords : Keywords Diisocyanates; Polycarbosilane; Polyol; Polyurethane foam; Preceramic foam; Pyrolysis; Silicon Carbide foam.;
Abstract
Abstract The open cell silicon carbide SiC foam was prepared using highly crosslinked hybrid organic- inorganic polymer resin matrix. As inorganic polymer polycarbosilane was taken and organic resin was taken as a mixture of epoxy resin and diisocyanates. The resultant highly crosslinked hybrid resin matrix on heating and subsequently on pyrolysis yielded open cell silicon carbide foam. The hybrid resin matrix was characterized by Fourier transform Infrared Spectroscopy FT-IR and thermal properties i.e. Thermogravimetric analysis TGA 26 Differential Scanning Calorimetry DSC were also studied. The morphological studies of silicon carbide ceramic foam were carried out using X-ray Spectroscopy XRD 26 Scanning Electron Microscopy SEM.
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