Infusible preceramic silazane polymers via high energy radiation

Details Infusible preceramic silazane polymers via high energy radiation Infusible preceramic silazane polymers via high energy radiation

1987-01-15

1989-05-09

Bleutge, John C.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415744, 522141, 522144, 522148, 525474, 528 25, 528 32, 501 97, C04B 3559, C08L 8316, C08G 7754

Patent

active

048286630

ABSTRACT:
A method is disclosed for the preparation of ceramic materials or articles by the pyrolysis of vinyl- or allyl-containing preceramic silazane polymers wherein the vinyl- or allyl-containing preceramic silazane polymers are rendered infusible prior to pyrolysis by high energy radiation such as gamma rays or an electron beam. Preceramic polymer compositions containing a vinyl- or allyl-containing silazane polymers and mercapto compounds containing at least two mercapto groups may also be rendered infusible by such high energy radiation. This method is especially suited for the preparation of ceramic fibers.

REFERENCES:
patent: 4220600 (1980-09-01), Yajima
patent: 4546163 (1985-10-01), Haluska
patent: 4631260 (1986-12-01), Bartos
patent: 4656300 (1987-04-01), Lebrun
patent: 4689252 (1987-08-01), Lebrun
patent: 4694060 (1987-09-01), Porte
patent: 4722988 (1988-02-01), Porte

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