Non-thermal expanding spool for carbon fiber oxidation

Details Non-thermal expanding spool for carbon fiber oxidation Non-thermal expanding spool for carbon fiber oxidation

1983-08-26

1985-07-09

Marcus, Stephen

Winding, tensioning, or guiding

Bobbin or spool

Open-work structure

68198, B65H 7502

Patent

active

045277540

ABSTRACT:
The disclosure concerns a non-thermal expanding spool for use in oxidation of green spun carbon fibers, subsequent to fiber spinning and prior to carbonization. The spool is a hollow tube formed on a mandrel from a multi-ply, multi-directional woven graphite cloth impregnated with a thermosetting resin, e.g. polyimide. Then a plurality of hoop fiber filaments are wrapped around it which also become impregnated with the thermosetting resin. The resulting tube or spool is then baked or cured at elevated temperatures. The baked spool is then provided with a large number of geometrically or randomly disposed holes or openings.

REFERENCES:
patent: Re27794 (1973-10-01), Otani
patent: 2162841 (1939-06-01), Dunlap
patent: 2217459 (1940-10-01), Slaughter
patent: 2633729 (1945-03-01), Slaughter
patent: 3054428 (1962-09-01), Crawford
patent: 3997929 (1976-12-01), Schultheiss et al.
patent: 4208267 (1980-06-01), Diefendorf et al.
patent: 4351816 (1982-09-01), Schulz

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