Abstract
Silicon oxycarbide glass fibers have been successfully drawn from organically modified silicates (ORMOSILs) by the sol-gel method. The gel fibers were drawn from a precursor composed of tetraethyl orthosilicate (TEOS) and polydimethyl siloxane (PDMS) with different weight fraction. The organics in the fiber underwent decomposition to at temperatures higher than 300°C. The existence of oxycarbide phases were detected using infrared spectroscopy and solid state 29Si NMR and was found in the fibers with heating temperatures higher than 700°C in nitrogen atmosphere. X-ray powder diffraction patterns showed that the fibers were still amorphous even after heat treatment at 1000°C for one hour.
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Hu, Y. Preparation of silicon oxycarbide glass fibers from organically modified silicates. Journal of Materials Science 35, 3155–3159 (2000). https://doi.org/10.1023/A:1004832305979
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DOI: https://doi.org/10.1023/A:1004832305979