PROCESS FOR THE RETICULATION OF POLYSILAZANES IN PARTICULAR FOR THE OBTAINING OF CERAMIC FIBERS

摘要

The present invention relates to a process for crosslinking polysilazanes by bringing these polysilazanes into contact with an amount effective to carry out said crosslinking of triorganosilyl trifluoromethanesulfonate, preferably at a temperature of between 60 ° C and the temperature. softening polysilazanes. / P P The process according to the invention makes it possible in particular to obtain crosslinked, windable, reelable, non-tacky and infusible fibers prior to pyrolysis in order to obtain ceramic fibers with mechanical properties. improved. / P