Process for the production of carbon filaments utilizing an acry

Details Process for the production of carbon filaments utilizing an acry Process for the production of carbon filaments utilizing an acry

1974-11-14

1978-09-05

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 292, 4234474, D01F 912, D01F 922

Patent

active

041120590

ABSTRACT:
An improved overall process is provided for producing carbon filaments beginning with a multifilament acrylic precursor. The process facilitates the thermal transformation of the acrylic fibrous material in the absence of undesirable coalescence between adjoining filaments. An extremely thin deposition of colloidal silica initially is provided upon the surface of the multifilament acrylic precursor (as described), the fibrous material thermally stabilized in the absence of coalescence (as described), the colloidal silica substantially removed, and the thermally stabilized fibrous material carbonized (as described). The resulting carbon filaments exhibit improved physical properties and particularly are suited for use as fibrous reinforcement in a resinous matrix.

REFERENCES:
patent: 2799915 (1957-07-01), Barnett et al.
patent: 3413094 (1968-11-01), Gibson
patent: 3508874 (1970-04-01), Rulison
patent: 3539295 (1970-11-01), Ram

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