Abstract
A novel precursor for preparing SiBNC ceramic fibers was successfully prepared via co-polymerization of trichlorosilane (SiHCl3), boron trichloride (BCl3) and methyl amine (MeNH2). The polymeric precursor exhibited good melt spinnability due to its relatively linear-chain chemical structure, which could be easily melt spun into green fibers with a diameter of 28μm. The green fibers were subsequently pyrolyzed to SiBNC ceramic fibers with ca. 24μm in diameter and 750MPa in tensile strength. The polymer-to-ceramic conversion was investigated by the means of thermogravimetric analysis (TGA) and nuclear magnetic resonance spectroscopy (NMR).
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