Curing preceramic polymers by exposure to nitrogen dioxide

Details Curing preceramic polymers by exposure to nitrogen dioxide Curing preceramic polymers by exposure to nitrogen dioxide

C - Chemistry, Metallurgy

08

G

402/9

C08G 77/60 (2006.01) C04B 35/571 (2006.01) C04B 35/589 (2006.01)

Patent

CA 2036711

CURING PRECERAMIC POLYMERS BY EXPOSURE TO NITROGEN DIOXIDE ABSTRACT The present invention relates to a rapid method of infusibilizing (curing) preceramic polymers comprising treating said polymers with gaseous nitrogen dioxide. The infusibilized polymers produced thereby may be pyrolyzed to temperatures in excess of about 800°C. to yield ceramic materials with low oxygen content and, thus 3 good thermal stability. The methods of this invention are especially useful for the production of ceramic fibers and, more specifically, to the on-line production of ceramic fibers.

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