Method for producing ceramic fibers of a composition in the SiC range and for producing SiC fibers
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United States of America Patent
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Feb 6, 2018
Grant Date -
Aug 27, 2015
app pub date -
Apr 29, 2015
filing date -
Dec 30, 2009
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Abstract
A method for producing ceramic fibers of a composition in the SiC range, starts from a spinning material that contains a polysilane-polycarbosilane copolymer solution. The spinning material is extruded through spinnerets in a dry spinning method and spun through a spinning duct into green fibers, and the green fibers are subsequently pyrolyzed. Accordingly, the polysilane-polycarbosilane solution contains between 75 wt. % and 95 wt. %, in particular between 80 and 90 wt. %, of an indifferent solvent, and the spinnerets have a capillary diameter between 20 and 70 μm, in particular between 30 and 60 μm, in particular between 40 and 50 μm.
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