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

1990-03-21

1991-09-24

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 56, 264 65, 264 83, 26421114, 26421116, 26421117, D01F 910, D01F 1104

Patent

active

050512153

ABSTRACT:
A rapid method of infusibilizing (curing) preceramic polymers comprising treatment said polymers with gaseous nitrogen dioxide. The infusibilized polymers may be pyrolyzed to temperatures in excess of about 800.degree. C. to yield ceramic materials with low oxygen content and, thus, good thermal stability. The methods are especially useful for the production of ceramic fibers and, more specifically, to the on-line production of ceramic fibers.

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