Ignition resistant carbonaceous material

Details Ignition resistant carbonaceous material Ignition resistant carbonaceous material

1995-11-03

1996-12-10

Raimund, Christopher

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428289, 428408, D04H 158

Patent

active

055829082

ABSTRACT:
A process for preparing an ignition resistant carbonaceous material by exposing a meltblown or spunbonded acrylic precursor material in the form of at least one ply of a generally planar fibrous web, matt or batt to ionizing radiation to crosslink said acrylic material which is then heat treated in an inert atmosphere to increase the carbon content of said irradiated material to form said carbonaceous material. The invention also resides in a continuous self bonded fibrous carbonaceous material having a carbon content of from about 65% to less than about 92%, an oxygen content of less than about 2%, and a specific resistivity of from about 10.sup.-1 to about 10.sup.10 ohm-cm. Preferably said carbonaceous material has an oxygen content of less than about 1% and a nitrogen content of from about 5% to about 30%.

REFERENCES:
patent: 4473372 (1984-09-01), Kuder et al.
patent: 4698189 (1987-10-01), Tetzlaff

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