Process for dry spinning thermally sensitive organosilicon prece

Details Process for dry spinning thermally sensitive organosilicon prece Process for dry spinning thermally sensitive organosilicon prece

1989-05-17

1991-03-05

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 56, 264 83, 264205, 264211, 26421116, 26421117, 501 95, D01F 696, D01F 910, D01F 1104

Patent

active

049976010

ABSTRACT:
Preceramic fibers are produced by dissolving a solid organosilicon preceramic polymer in a solvent to form a spinning solution containing at least seventy percent polymer solids, dry spinning and extracting solvent in the presence of a non-oxidizing gas at a temperature and pressure sufficient to vaporize solvent from the fiber, and at least one curing agent being added to the non-oxidizing gas or spinning solution, or both, to induce on-line curing of the fiber or to aid in subsequent curing of the fiber or both. The preceramic fibers are thereafter pyrolyzed to ceramic form.

REFERENCES:
patent: 3324061 (1967-06-01), Tanquary et al.
patent: 3814792 (1974-06-01), Arakawa et al.
patent: 4097294 (1978-06-01), Rice et al.
patent: 4283376 (1981-08-01), Yajima et al.
patent: 4395460 (1983-07-01), Gaul

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